Detailed Guide to Single-Storey extensions McTernan Design

Expert Extension Plans in Solihull, Birmingham, and the West Midlands by McTernan Design

Looking for professional single-storey extension plans in Solihull, Birmingham, or the West Midlands? McTernan Design offers tailored extension designs to meet your specific needs. Whether you need permitted development advice or detailed architectural drawings for a householder planning application (the formal plans required for submission to local councils), our team will guide you through each step. Our service ensures your project complies with all local planning authorities and building regulations, making the entire process stress-free and seamless for you.

Warwickshire vaulted kitchen extension by McTernan Design, showcasing exposed trusses and purlins, with a feature island unit creating an open-plan family living space.

Permitted Development Rear Extension: Size and Regulations for Rear Extensions

Single-Storey Rear Extension Plans in Solihull, Birmingham, and the West Midlands

Single-Storey Rear Extension Plans in Solihull, Birmingham, and the West Midlands
Looking to expand your home with a permitted development rear extension? At McTernan Design, we specialise in creating customised single-storey extension plans for homes in Solihull, Birmingham, and across the West Midlands. These extensions are perfect for adding ground-floor space without needing full planning permission. We’ll guide you through every step—from designing your space to navigating local planning regulations.

Popular Single-Storey Extensions We Offer:

  • Porch Extensions: Create an inviting entrance that enhances your home’s curb appeal.

  • Garage Extensions: Gain extra space for storage or vehicle parking.

  • Home Office Extensions: Design the perfect workspace, tailored for productivity.

  • Larger Kitchens or Playrooms: Expand your living areas to accommodate family gatherings.

  • Garden Rooms and Orangeries: Bright, airy spaces that bring the outdoors inside.

  • Ground-Floor Bedrooms and Bathrooms: Improve accessibility for residents or guests.

At McTernan Design, we guide you through the entire process—from planning permission to building control approval—making sure your extension meets all local regulations and is perfectly suited to your needs.

Semi-detached kitchen extension by McTernan Design with lean-to mono-pitch roof, VELUX window, and bifold doors, creating a modern open-plan indoor-outdoor family living space

How Far Can You Extend Your Home Without Planning Permission in Solihull and Birmingham?

If you're wondering how much you can extend your house without planning permission in Solihull, Birmingham, or the West Midlands, it's essential to understand the permitted development rules. The maximum extension size allowed under permitted development rights depends on your property type:

  • Terraced and Semi-Detached Homes: You can extend up to 3 metres without planning permission. For larger extensions up to 6 metres, you’ll need a Prior Approval application to ensure your neighbours are consulted.

  • Detached Homes: Detached houses can extend up to 4 metres without needing planning permission. Extensions between 4 and 8 metres require a Neighbour Consultation Scheme approval, where the local council will inform your neighbours about your plans.

McTernan Design can guide you through the entire process, helping you navigate planning permission or ensuring your project complies with permitted development rights. Whether you're based in Solihull, Birmingham, or surrounding areas like Redditch and Shirley, we provide expert advice to ensure your extension stays within the legal limits.

Do You Need Planning Permission for a Single-Storey Extension in Solihull or the West Midlands?

If you're considering a single-storey extension in Solihull, Birmingham, or the West Midlands, planning permission may not always be necessary. Many extensions, both single and two-storey, can be built under permitted development rights. However, it’s advisable to obtain a Certificate of Lawful Development to ensure everything is in order and avoid complications later. This certificate acts as legal proof that your extension meets all necessary requirements.

At McTernan Design, we offer expert advice and can assess whether your project requires formal planning permission or if it qualifies under permitted development rules. We handle all aspects of compliance, ensuring your extension meets local authority standards.

A bespoke new-build house featuring an elegant orangery with CRITTALL-style windows, blending classic design with contemporary elements to create a light-filled, stylish living space.

Understanding Permitted Development for Single-Storey Extensions in Birmingham

For homeowners in Birmingham, single-storey extensions may fall under permitted development rights, allowing you to extend your home without the need for planning permission. The following rules apply:

  • Detached homes can extend up to four metres from the rear wall.

  • Other houses, such as terraced or semi-detached, can extend up to three metres.

However, if your property is located in a Conservation Area or a Site of Special Scientific Interest, larger extensions (up to eight metres for detached homes and six metres for other houses) may be possible with Prior Approval from the local council. This process ensures that your extension complies with local regulations and neighbours' concerns.

At McTernan Design, we provide expert advice to help you navigate Birmingham's specific permitted development guidelines, ensuring that your extension is fully compliant and meets your needs.

Understanding the Prior Approval Process for Extensions in the West Midlands

For larger single-storey rear extensions in the West Midlands, including Solihull and Birmingham, you may need to seek prior approval if your extension exceeds certain limits—4 metres for detached homes and 3 metres for other properties. In some cases, extensions up to 8 metres for detached homes and 6 metres for others may be allowed, subject to Prior Approval.

How Does the Prior Approval Process Work?

  • Neighbour Notification: Your local council will notify your neighbours about your proposed extension.

  • Objection Review: If any objections are raised, the council will review them to decide whether your extension can proceed under permitted development rights or if you will need to apply for full planning permission.

If you’re uncertain about the prior approval process for your extension in Solihull, Birmingham, or the West Midlands, McTernan Design can guide you through the necessary steps to ensure compliance.

Building Regulations Compliance for Single-Storey Extensions in Solihull, Birmingham, and the West Midlands

When building a single-storey extension in Solihull, Birmingham, or the West Midlands, it’s essential that your project complies with all Building Regulations. These regulations ensure your extension is safe, energy-efficient, and built to the highest standards.

Key Compliance Areas Include:

  • Foundations: Ensure structural stability and strength.

  • Doors and Windows: Must meet standards for security and energy efficiency.

  • Drainage: Proper installation and connection of drainage systems is required.

  • Electrics: Electrical installations must be safe and comply with the latest standards.

  • External and Internal Walls: Insulation, stability, and fire resistance are crucial for walls.

  • Kitchens and Bathrooms: Must meet hygiene, ventilation, and safety standards.

  • The Roof: Should use proper materials and provide adequate insulation for long-term durability.

Need guidance to ensure your single-storey extension meets all building regulations in Solihull or Birmingham? Contact McTernan Design for expert assistance with your extension’s building control approval.

3D drawing plans by McTernan Design to optimize kitchen space planning, positioning kitchen islands for efficient open-plan kitchen and dining layouts.

Single Storey Extension Ideas

  • A wrap around extension in Solihull combines both rear and side extensions into a single, unified space. This design requires more structural work but maximises the available space without significantly reducing the garden area.

    Benefits of a Wrap Around Extension:

    • Optimised Space: Efficiently utilises the side and rear of the property, providing more living area without encroaching on the garden.

    • Flexible Design Options: Ideal for creating an open-plan kitchen, dining area, or additional rooms tailored to your needs.

    • Added Value: Enhances both the functionality and aesthetic appeal of your home, potentially increasing property value.

  • A side extension in the West Midlands makes use of unused alleyways or narrow side passages to create additional space for your home. This type of extension is ideal for:

    • Expanding Kitchens: Create a larger, more functional kitchen area.

    • Utility Rooms: Add practical space for laundry and storage.

    • Downstairs WCs: Incorporate an extra bathroom for convenience.

    Advantages of a Side Extension:

    • Efficient Space Use: Utilises often-overlooked side areas of your property.

    • Minimal Planning Requirements: Often possible without a full planning application under permitted development rights.

  • A rear extension in Solihull extends towards the back of your house, providing substantial additional space to enhance your living area. This type of extension offers the potential to double the available space under permitted development rights.

    Benefits of a Rear Extension:

    • Significant Space Addition: Ideal for creating larger kitchen-diners, living rooms, or multi-functional family areas.

    • Permitted Development Flexibility: May be built without full planning permission, allowing up to 6 metres for semi-detached and 8 metres for detached homes under specific conditions.

    • Increased Property Value: Enhances both the functionality and market appeal of your home.

  • Bungalows in Birmingham offer several extension options that provide opportunities for modernisation and increased living space. Despite potential construction challenges and planning hurdles, a well-designed extension can significantly enhance the functionality and appeal of your bungalow.

    Benefits of a Bungalow Extension:

    • Versatile Extension Options: Choose from side, rear, or even loft extensions to suit your space and design preferences.

    • Modernisation Opportunities: Update the look and layout of your bungalow with contemporary design elements.

    • Additional Living Space: Create extra bedrooms, home offices, or open-plan living areas to accommodate your lifestyle needs.

Single storey extension design ideas Solihull

  • When planning a single-storey extension in the West Midlands, there are several roof styles to consider, each offering unique benefits and design possibilities:

    Popular Roof Styles for Single-Storey Extensions:

    • Gabled Roof: Adds a sense of spaciousness and enhances the aesthetic appeal of your extension. It can be complemented with glazed gable ends to allow additional natural light.

    • Sloping Roof: Blends seamlessly with the original house structure while providing extra interior height. Ideal for maintaining a cohesive architectural style.

    • Flat Roof: An economical option that can be enhanced with design features such as metal cladding or glazing for a contemporary look.

    • Butterfly Roof (V Roof): A distinctive design where two roof surfaces slope downwards towards a central valley, resembling a butterfly's wings. This style can add a unique architectural feature to your home.

    • When designing an extension in Solihull or Birmingham, consider incorporating skylights, roof lanterns, or structural glass roofs to enhance natural light and aesthetic appeal.

      Lighting Options for Extensions:

      • Skylights: A cost-effective solution for introducing natural light into your extension. Suitable for various roof types, including flat, sloping, or gabled roofs, skylights are ideal for maximising daylight in smaller spaces.

      • Roof Lanterns: While more costly, roof lanterns are visually striking and add height and drama to flat roof extensions. They provide a stunning focal point and flood the interior with light.

      • Structural Glass Roofs: A modern choice that maximises light and creates a seamless connection between indoor and outdoor spaces. Particularly popular for side return extensions, structural glass roofs enhance the contemporary look of your home.

  • Choosing the right windows and doors for your single-storey extension in the West Midlands can greatly influence the look, feel, and functionality of your space. Here are some popular options to consider:

    Popular Window and Door Choices:

    • Bifolding and Sliding Doors: Ideal for integrating indoor and outdoor spaces, these doors create a seamless flow and maximise natural light. Perfect for creating an open, airy feel in kitchen-diners or living areas.

    • Crittall Style Windows and Doors: A trendy and striking option that suits both period and modern homes. These steel-framed windows and doors add a touch of industrial charm and are ideal for creating bold, stylish extensions.

    • Feature Windows: Increasingly popular for their ability to create unique focal points, such as window seats with garden views. Feature windows enhance natural light and add architectural interest to your extension.

  • Choosing the right exterior finish for your extension in Solihull or Birmingham can significantly impact its overall appearance and integration with your existing property. Here are some popular options to consider:

    Popular Exterior Finishes for Extensions:

    • Matching Original Brickwork: This option keeps the extension in harmony with the existing structure, maintaining a consistent aesthetic that blends seamlessly with the original building.

    • Rendering: Ideal for modernising older properties, such as 1960s and 1970s homes. You can choose to render just the extension or both the original and new structures for a cohesive, updated look. Available in a variety of finishes and colours to suit your design preference.

    • Cladding: Offers a wide range of materials like timber, fibre cement, or corten steel. Cladding can add texture and contrast, providing a contemporary or rustic aesthetic depending on the material chosen.

Warwickshire single-storey side extension by McTernan Design, utilising permitted development rights to expand a semi-detached home in the green belt with a seamless design.
Birmingham single-storey rear extension by McTernan Design, featuring a single-ply flat roof with a central pyramid lantern window above a feature kitchen island for ideal family living.

How Much Does a Single-Storey Extension Cost in Solihull, Birmingham, and the West Midlands?

The cost of a single-storey extension in Solihull, Birmingham, or the West Midlands varies based on a number of factors, including your location, the size of the extension, and the level of specification. Understanding these factors can help you better estimate your project’s budget.

Factors That Impact Your Extension Cost:

  • Location: Costs differ depending on local labour rates and material prices in areas like Solihull or Birmingham.

  • Size of the Extension: Larger extensions require more resources, both in terms of materials and labour, which can increase overall costs.

  • Materials and Finishes: The choice of materials—from standard to high-end—significantly affects your extension’s total price.

Additional Considerations:

  • Purpose of the Extension: A kitchen extension tends to be more expensive than a home office or playroom due to additional plumbing, custom fittings, and appliance requirements.

  • Heating and Electrical Upgrades: Your project may involve upgrading your heating system or expanding electrical wiring, particularly for kitchens or bathrooms.

  • New Fixtures and Appliances: You’ll also need to budget for new kitchen appliances or bathroom fixtures, as well as potentially upgrading your boiler.

Want a detailed, tailored cost estimate? Contact McTernan Design today to schedule a free consultation for your single-storey extension in Solihull, Birmingham, or the West Midlands.

Discover a 3D aerial view of a stunning wraparound kitchen and dining extension to a terraced property in Birmingham by McTernan Design.

Single-Storey Extension Costs in Solihull, Birmingham, and the West Midlands: Detailed Pricing Breakdown

The cost of a single-storey extension in Solihull, Birmingham, and the West Midlands can vary depending on several factors, including location, build quality, and the complexity of the design.

What Affects the Cost of Your Extension?

  • Location: Labour and material costs differ between areas. Solihull and Birmingham may have varying building costs compared to other West Midlands regions.

  • Size of Extension: Larger extensions require more materials and time, increasing the total cost.

  • Build Quality: The quality of materials and finishes used can significantly impact pricing. High-end finishes will increase overall project costs.

Pricing Based on Quality Levels
For a standard box-shaped extension, here’s an estimate of costs per square metre (excluding VAT):

  • Standard Quality: £1,500 to £1,750/m²

  • Good Quality: £1,700 to £2,100/m²

  • Excellent Quality: £1,800 to £2,500/m²+

Premium finishes typically cost 40% more due to the use of higher-quality materials and expert craftsmanship.

Need a Customised Cost Estimate?
For a more precise breakdown of extension costs tailored to your project in Solihull or Birmingham, contact McTernan Design for a free consultation and personalised quote.

Single-storey flat roof with canopy overhang and feature flat-panel roof window with bifold doors opening onto the new garden space in Solihull

Detailed Cost Breakdown for a 30m² Single-Storey Extension in Solihull, Birmingham, and the West Midlands

If you're planning a 30m² single-storey extension in Solihull, Birmingham, or anywhere in the West Midlands with a budget of £50,000 to £60,000, here’s a breakdown of typical costs:

Key Cost Elements for a 30m² Extension:

  • Structure (Foundations, Walls, and Roof): £20,000

  • Plumbing and Heating: £3,500

  • Electrics and Lighting: £3,500

  • Flooring: £1,500

  • Kitchen Units and Worktops: £14,000

  • Decorating: £2,000

  • Bifold Doors: £3,500

  • Landscaping/Finishing Works: £2,000

Additional Cost Considerations:

  • Connecting to Your Home: Make sure to budget for connecting the new extension to your existing property’s structure.

  • Structural Modifications: Plan for any changes to your existing home that may be needed to support the extension.

  • Temporary Accommodation: You may need temporary living arrangements during construction, so consider this in your overall budget.

Want a precise cost breakdown for your 30m² single-storey extension in Solihull, Birmingham, or the West Midlands? Contact McTernan Design for a free, personalised consultation.

Single-storey front extension and garage conversion in Redditch by McTernan Design, featuring a new gable canopy porch for enhanced curb appeal and functional living space.

Flexible Single-Storey Extension Designs for Solihull, Birmingham, and the West Midlands: Custom Solutions for Every Property and Budget

Single-storey extensions offer flexible design options for all types of homes, including terraced, semi-detached, and detached properties in Solihull, Birmingham, and the West Midlands. Whether you’re working with a modest budget or seeking high-end finishes, our design solutions are fully customisable to suit your needs and preferences.

Design Solutions for Every Budget:

  • Standard Designs: Cost-effective solutions that optimise your space without compromising on functionality.

  • High-End Extensions: Luxurious materials and bespoke design features that elevate your home.

McTernan Design offers personalised extension plans tailored to your property type and budget. Contact us today to discuss your project and explore our range of design options in Solihull, Birmingham, and across the West Midlands.

Solihull planning permission drawing by McTernan Design, showcasing expert 2D drawing services tailored for planning applications and approvals.

Comprehensive Building Regulations Drawings for Home Extensions in Solihull and the West Midlands

Ensuring Building Control approval for your home extension in Solihull, Birmingham, and the West Midlands is essential. All home extensions must comply with Building Regulations, which focus on key areas like structural integrity, fire safety, sound insulation, and energy efficiency. Our detailed Building Regulations package guarantees your extension meets these standards.

Why Choose McTernan Design’s Comprehensive Building Regulations Package?

  • Accurate Quotes: Obtain precise builder quotes by commissioning our detailed Building Regulations package.

  • Guaranteed Compliance: Ensure your project meets all local Building Control standards to avoid issues during construction.

  • Smooth Approval Process: We facilitate seamless Building Control approval with local authorities in Solihull and the West Midlands.

Commission Your Building Regulations Package with McTernan Design

By choosing McTernan Design, you guarantee that your home extension complies with all necessary regulations, reducing construction risks. Schedule a free consultation today to discuss your project and ensure compliance with Building Regulations in Solihull, Birmingham, or the West Midlands.

Solihull 3D architectural visualisation by McTernan Design, depicting an open-plan kitchen and dining renovation with a single-storey rear extension, mono-pitch roof, and vaulted ceiling.

Side Single-Storey Extensions in Solihull and the West Midlands by McTernan Design

Thinking about a side single-storey extension for your home in Solihull, Birmingham, or the West Midlands? At McTernan Design, we specialise in crafting bespoke, high-quality side extensions that blend seamlessly with your existing property. Our designs add valuable space, enhance natural light, and improve your home’s overall functionality.

Why Choose a Side Extension?

  • Space Efficiency: Maximise the use of narrow or unused areas on the side of your home.

  • Improved Natural Light: Side extensions are great for bringing additional daylight into your home.

  • Seamless Integration: We ensure the new extension perfectly complements your existing home design, maintaining its aesthetic appeal.

Looking to expand your home with a side extension in Solihull or Birmingham? Contact McTernan Design for a free consultation today and explore the possibilities for your property.

Solihull 2D architectural elevation and planning drawings by McTernan Design for an Orangery extension, featuring Crittall doors for a blend of elegance and functionality.
Solihull front extension by McTernan Design, featuring a garage conversion, new gabled porch with a glazed window above the front door, and Millboard cladding enhancing the façade.

Planning and Building Regulation Drawings & Custom Architectural Design in Solihull and the West Midlands

McTernan Design offers comprehensive planning and building regulation drawings tailored for single-storey rear, side, and front extensions in Solihull, Birmingham, Warwickshire, Coventry, Walsall, Wolverhampton, and surrounding areas. Our services ensure your home extension complies with local authority regulations and meets the necessary standards for safety, structure, and energy efficiency.

Planning and Building Regulation Drawings for Extensions
Our detailed drawings provide everything needed for your planning permission and building control approval, making the application process smoother and more efficient. Whether you’re adding space to your home in Solihull or planning a rear extension in Birmingham, we’ve got you covered.

Custom Architectural Design in Solihull and the West Midlands
Benefit from our expertise as your trusted residential architectural design specialist. We craft bespoke designs that match your vision and blend seamlessly with your property’s style, whether you’re in Warwickshire, Wolverhampton, or beyond. Our personalised approach ensures your new extension is both beautiful and functional.

Looking to get started with planning drawings or a custom home design? Contact McTernan Design for expert advice today.

Single Storey Extension Ideas for Solihull, Birmingham, and the West Midlands

Wrap Around Extension in Solihull: Efficient Space Utilisation


Looking to maximise space with a wrap-around extension in Solihull? This design combines rear and side extensions into a unified space, perfect for adding more living area without compromising your garden.
Benefits of a Wrap Around Extension:

  • Optimised Space: Combines rear and side areas to create additional space without reducing your garden.

  • Flexible Design Options: Ideal for open-plan kitchens, dining rooms, and other custom spaces.

  • Added Value: Enhances the aesthetic appeal and functionality of your home, potentially boosting property value.

Side Extension in the West Midlands: Maximising Unused Space


A side extension makes excellent use of narrow spaces or unused alleyways, adding valuable square footage to your home in the West Midlands.
Perfect for:

  • Expanding Kitchens: Create a spacious, functional kitchen.

  • Utility Rooms: Add practical laundry or storage space.

  • Downstairs WCs: Incorporate an additional bathroom for convenience.
    Advantages of a Side Extension:

  • Efficient Space Use: Makes use of often-overlooked areas.

  • Minimal Planning Requirements: Often falls under permitted development rights, avoiding full planning applications.

Rear Extension in Solihull: Maximise Your Home's Space


A rear extension allows you to extend your Solihull home towards the back, adding substantial space for your living areas. Under permitted development rights, you can build up to 6 metres for semi-detached and 8 metres for detached homes.
Benefits of a Rear Extension:

  • Significant Space Addition: Perfect for expanding kitchens, living rooms, or family areas.

  • Permitted Development Flexibility: May not require full planning permission under specific conditions.

  • Increased Property Value: Adds both functional space and market appeal to your home.

Bungalow Extension in Birmingham: Modernise and Expand Your Home


If you own a bungalow in Birmingham, a well-designed extension can transform your space. Whether it’s a side, rear, or loft extension, this type of renovation offers modernisation opportunities and adds value.
Benefits of a Bungalow Extension:

  • Versatile Extension Options: Choose from side, rear, or loft extensions to suit your needs.

  • Modernisation Opportunities: Update your home with modern design elements.

  • Additional Living Space: Create new rooms, such as bedrooms or home offices, to accommodate your lifestyle.

Looking to expand your home with a custom single-storey extension in Solihull, Birmingham, or the West Midlands? Contact McTernan Design today for a free consultation.

Birmingham open-plan kitchen, dining, and living space renovation and extension by McTernan Design, creating the perfect family home with modern functionality and style.
Warwickshire oak-framed porch by McTernan Design, featuring curved timber details to enhance the front elevation and create a stunning entrance to the home.

Single Storey Extension Roof Design Ideas in Solihull and the West Midlands


When planning a single-storey extension in Solihull or the West Midlands, choosing the right roof style is crucial. Each roof option offers its own unique benefits, whether you are looking for modern aesthetics or want to blend seamlessly with your home’s existing design.

Popular Roof Styles for Single-Storey Extensions in Solihull and the West Midlands:

  • Gabled Roof: A gabled roof adds height and spaciousness to your extension, giving it an open, airy feel. This option is perfect for homes in Solihull looking to maximise natural light, especially with the addition of glazed gable ends.

  • Sloping Roof: A sloping roof provides additional interior height while blending smoothly with the original structure of your home in the West Midlands. This option works well for homeowners who want to maintain a consistent architectural style.

  • Flat Roof: Opt for a flat roof for a more cost-effective design. Flat roofs can be upgraded with features like metal cladding or glazed panels to give your extension a modern, stylish look. This is a popular choice for contemporary homes in Birmingham or Coventry.

Looking for expert advice on the best roof designs for your single-storey extension? Contact McTernan Design to explore the perfect option for your Solihull or West Midlands home.

Skylights and Roof Lanterns for Natural Light in Solihull and Birmingham Extensions

When designing your single-storey extension in Solihull or Birmingham, consider adding skylights, roof lanterns, or structural glass roofs to flood your home with natural light. These features not only enhance the aesthetic appeal of your extension but also help maximise daylight, creating a more inviting and energy-efficient space.

Lighting Options for Extensions in Solihull and Birmingham:

  • Skylights: A budget-friendly way to bring in natural light, skylights are suitable for flat, sloping, or gabled roofs. They’re perfect for smaller spaces in Solihull homes where maximising daylight is key.

  • Roof Lanterns: Although more expensive, roof lanterns add height and drama to flat-roofed extensions. They act as stunning focal points, especially in Birmingham homes, and flood interiors with light.

  • Structural Glass Roofs: For a sleek, modern look, structural glass roofs are the ultimate choice. They create a seamless connection between indoor and outdoor spaces, particularly popular in side return extensions across the West Midlands.

Birmingham rear extension drawings by McTernan Design, showcasing a single-storey extension with a canopy roof overhang, creating a seamless transition between open-plan living and the garden.
Solihull house extension drawings by McTernan Design featuring a new porch with a living wall and glazed pentagon window, enhancing curb appeal and creating a welcoming entrance.

Window and Door Options for Single Storey Extensions in the West Midlands

Choosing the right windows and doors is essential to the look and functionality of your single-storey extension in the West Midlands. Here are some popular options:

Popular Window and Door Choices for West Midlands Extensions:

  • Bifolding and Sliding Doors: These doors are ideal for creating a seamless flow between indoor and outdoor spaces in kitchen-diners or living areas. They’re popular choices in Solihull and Birmingham for maximising natural light.

  • Crittall Style Windows and Doors: A trendy option, Crittall windows bring an industrial charm to both period and modern homes. They’re perfect for bold, stylish extensions in the West Midlands.

  • Feature Windows: Create unique focal points with feature windows. Whether it’s a window seat with garden views or an architectural statement, these windows increase natural light and add visual interest to your extension.

Exterior Finish Options for Extensions in Solihull and Birmingham: Brickwork, Rendering, Cladding


Choosing the right exterior finish for your home extension in Solihull or Birmingham can greatly enhance its appearance and integration with your existing property. Here are some of the most popular exterior finishes to consider:

Popular Exterior Finishes for Extensions in Solihull and Birmingham:

  • Matching Original Brickwork: For homeowners in Solihull or Birmingham looking to keep their extension in harmony with the existing structure, matching the original brickwork is a great option. It maintains a consistent aesthetic that blends seamlessly with your home.

  • Rendering: Perfect for modernising older properties like 1960s or 1970s homes, rendering can be applied to just the extension or across the entire building for a cohesive, updated look. With various finishes and colours available, rendering adds a fresh appearance to your Solihull extension.

  • Cladding: For a more contemporary or rustic feel, cladding offers a range of materials such as timber, fibre cement, or corten steel. Ideal for Birmingham homes, Millboard cladding provides both texture and contrast, allowing you to choose the finish that suits your design preferences.

Understanding VAT on House Extensions in Solihull and Birmingham: Rates, Savings, and Eligibility

When planning your house extension in Solihull or Birmingham, it's important to understand how VAT affects your project’s costs.

Standard VAT Rate for Extensions:

  • Standard Rate (20%): Most building work for extensions is subject to the standard VAT rate of 20%, which applies to both materials and labour if you’re working with non-VAT-registered tradespeople.

How to Save on VAT:

  • Use VAT-Registered Tradespeople: Hiring VAT-registered builders can help you save VAT on labour costs, though materials will still incur the standard 20% rate.

Reduced VAT Rate (5%) Eligibility:

  • Certain extension projects may qualify for a reduced VAT rate of 5%, such as:

    • Conversions that increase or reduce the number of residential units (e.g., converting a single home into multiple flats).

    • Work on buildings unoccupied for at least two years.

Conditions for VAT Relief:

  • To qualify for VAT relief, make sure to work with a VAT-registered builder who understands the specific requirements for reduced VAT eligibility.

How to Manage Extension Costs Effectively in the West Midlands: Key Factors and Solutions

When planning a home extension in the West Midlands, especially in Solihull or Birmingham, managing costs effectively is crucial. One way to ensure your project stays on budget is by engaging a quantity surveyor, particularly for larger projects. A quantity surveyor will prepare a detailed Bill of Quantities (BQ) that breaks down every aspect of the build. This document helps builders provide accurate quotations and ensures that your contract is clear, minimising cost overruns.

Engaging a Quantity Surveyor for Home Extensions in Birmingham:

  • Quantity Surveyors: Hiring a quantity surveyor is highly recommended for larger home extension projects. They prepare Bills of Quantities, providing you with an accurate pricing breakdown that helps builders prepare quotations, ensuring cost control throughout the project.

Key Cost Factors for Extensions in the West Midlands:

Several factors can increase the cost of a home extension in Solihull, Birmingham, or surrounding West Midlands areas. Understanding these elements can help you budget more accurately:

  • External Finishes: Choosing the right finish significantly impacts your budget. Render is a cost-effective option, while cedar and stone cladding are more expensive and may incur higher maintenance costs.

  • Electrical Work: Kitchens, in particular, require more extensive electrical installations, such as extra sockets, lighting, and dedicated circuits for appliances.

  • Plumbing: Both kitchens and bathrooms need complex plumbing systems, adding to your extension costs.

  • Glazing: The price of glazing depends on the type and size. Standard uPVC windows are more affordable, while aluminium bifold doors come at a higher cost.

  • Flooring: Depending on the material, flooring costs vary widely—from vinyl (£15/m²) to premium hardwood or stone (£100/m²+).

  • Bespoke Joinery: Custom-made features tend to be more expensive than mass-produced alternatives, often leading to delays.

  • Kitchen Specifications: Costs for kitchen installations can range from basic to high-end, depending on the materials and designs.

  • Worktops and Splashbacks: Budget for laminate worktops (£20-£40/m²) or premium materials like granite or quartz (£150-£475/m²).

  • Site-Specific Issues: Factors like nearby trees, public sewers, and unique foundation requirements may further increase costs.

Understanding the Build Cost Per m² for Single Storey Extensions in Birmingham

When planning a single storey extension in Birmingham, knowing the cost per m² is essential for accurate budgeting. Homeowners frequently search for terms like “single storey extension cost in Birmingham” to estimate their project’s budget. The total cost of your extension will vary based on factors such as the size, materials, location, site access, ground conditions, and the amount of glazing or design complexity.

Average Cost for a Single Storey Extension:

  • Typical Price Range: The average price for a single storey extension in Birmingham ranges from £1,800 to £2,400 per square metre plus VAT. Lower costs apply when using modest finishes, such as painted walls, carpet flooring, or engineered oak.

How Builders Calculate Costs:

Though cost per m² serves as a general guide, most builders now prefer to provide an itemised breakdown of specific construction components tailored to your project. Elements like the width of bifold doors, the number of Velux windows, the size of roof lanterns, and whether you include underfloor heating will significantly impact the overall cost. For accurate pricing, it’s essential to consider these details.

For a tailored extension cost estimate based on your Birmingham home, contact McTernan Design today to discuss your project specifics.

Understanding Extension Costs in 2024: A Comprehensive Approach for Birmingham Homeowners

When planning a home extension in Birmingham or the West Midlands, understanding how costs are estimated in 2024 is essential. Builders rarely rely solely on the cost per square metre to provide a quote. Instead, they use detailed plans and specific project specifications to create a more accurate and fixed price quotation.

Cost Estimation Practices in 2024:

Building contractors in Birmingham prefer to base their quotes on comprehensive project details rather than using the square metre rule, which can leave out critical factors such as bespoke finishes, unique architectural elements, and other project-specific features.

Exclusions from Cost Per Square Metre:

When calculating extension costs, it’s important to note that items like kitchen units, sanitary furniture, and other custom elements are typically not included in the standard cost per square metre. These items require separate pricing, making it crucial to discuss all aspects of your project to ensure an accurate estimate.

For a tailored home extension cost estimate in Birmingham or Solihull, contact McTernan Design today for expert guidance and fixed price quotes.

How Long Does It Take to Build a Single Storey Extension in Birmingham and Solihull?

Building a single storey extension in Birmingham or Solihull typically takes between 3 to 6 months, depending on several factors, including size, design complexity, and local planning approvals.

Key Factors Affecting Build Time:

  • Size of the Extension: Larger projects require more time for foundations, construction, and finishing touches.

  • Complexity of Design: If your extension includes features like large glazed windows, bespoke joinery, or complex roofing, it may take longer to complete.

  • Planning and Approval in Birmingham & Solihull: The time taken for planning permission and building regulations approval can impact your project's timeline. McTernan Design helps expedite this process, ensuring smooth and timely approvals.

  • Site Conditions: Factors such as site access, ground conditions, and any required demolition work can affect how long the extension will take to build.

Need advice on your home extension project in Birmingham or Solihull? Contact McTernan Design for expert guidance and a tailored timeline estimate.

Can I Build a Single Storey Extension in Birmingham or Solihull Without Planning Permission?


If you're considering a single-storey extension in Birmingham, Solihull, or the West Midlands, you may be able to proceed without planning permission under permitted development rights. However, larger or more complex projects might still require formal planning approval.

Understanding Permitted Development Rights:

  • Permitted Development: Allows homeowners to extend their property without a full planning application, provided they follow specific size, height, and material guidelines.

Key Criteria for Permitted Development in Birmingham and Solihull:

  • For semi-detached/terraced homes: The extension must not exceed 3 metres beyond the rear wall.

  • For detached homes: The extension must not extend more than 4 metres beyond the rear wall.

  • The height must be under 4 metres.

  • The materials used must match the existing house.

  • You cannot build on designated land like a Conservation Area or a Site of Special Scientific Interest.

Unsure if your extension falls under permitted development? Contact McTernan Design for expert advice and support to ensure your project complies with local planning rules.

How to Apply for a Full Plans Building Control Application in Solihull and Birmingham

For larger home extension projects in Solihull and Birmingham, applying for a Full Plans Building Control Application is essential. This process ensures that your design is fully approved by the local authority before construction begins, helping to prevent costly delays or changes during the build.

Why Choose a Full Plans Application?

  • Comprehensive Approval: A Full Plans Application allows your detailed architectural drawings to be thoroughly checked for compliance with local building regulations, ensuring your project is built to code.

  • Local Expertise: At McTernan Design, we handle the submission process for you, ensuring that your application meets the specific requirements set out by Solihull Borough Council and Birmingham City Council.

  • Risk Reduction: By obtaining approval before construction begins, you minimise the risk of unexpected alterations and delays, ensuring your project runs smoothly.

Need help submitting a Full Plans Building Control Application in Solihull or Birmingham? Contact McTernan Design today for expert assistance.

How the Party Wall Act Affects Your Solihull or Birmingham Extension

The Party Wall Act 1996 ensures that any construction work affecting shared walls or boundaries, such as in Solihull and Birmingham, follows legal protocols. If your single-storey extension impacts a party wall (a wall shared with a neighbour), or if you're building close to the boundary, you must serve a Party Wall notice before construction.

When Does the Party Wall Act Apply? The Party Wall Act applies if your project involves:

  • Altering or working on a shared wall (e.g., cutting into it to install beams).

  • Excavations that might affect the structural support of neighbouring properties.

  • Building along or up to the boundary line shared with your neighbour.

Serving a Party Wall Notice in Solihull and Birmingham:

  • Notice Requirement: You must serve a Party Wall notice to affected neighbours at least two months before starting work. This document should explain how your extension might impact the shared boundary or wall.

  • Neighbour’s Rights: Your neighbours can agree, dissent, or request modifications to your plans. If they dissent, a Party Wall Award will be needed, which involves a surveyor resolving any disputes.

Worried about the Party Wall Act for your Solihull or Birmingham extension? Contact McTernan Design to guide you through the process and ensure compliance.

Estimating Interior Fit-Out Costs for Extensions in Solihull and Birmingham

When planning a home extension in Solihull or Birmingham, you’ll need to allocate a significant portion of your budget to interior fit-out costs. These costs can vary greatly depending on the quality and materials chosen.

Budget Allocation for Interior Fit-Out:

Typically, homeowners should allocate between 30-40% of their budget to interior fit-out. Here’s a breakdown of common costs:

  • Kitchens: Depending on your preferences, kitchens range from £5,000 to £30,000+.

  • Bathrooms: Expect to spend £4,500 to £11,000, depending on fittings.

  • Flooring: Material costs range from £25 to £100 per square metre for options like vinyl, laminate, hardwood, and stone.

  • Plastering and Painting: Estimate around £85 per square metre, which can add up based on the size of the space.

  • Sliding/Bifold Doors: These doors typically cost £1,500 to £2,000 per linear metre.

  • Heating: Extending your central heating system may cost £150 per day for labour, excluding materials. Underfloor heating options include:

    • Electric systems: Lower upfront costs but higher operational costs.

    • Water-fed systems: Higher installation costs but more energy-efficient in the long term.

  • Boiler: A new boiler might add around £2,500 to your total costs.

Client Responsibility for Interior Finishes:

In most projects, McTernan Design does not manage interior finishes such as kitchens and bathrooms. Homeowners typically purchase these items directly from suppliers or through their Principal Contractor.

Will a Home Extension Increase Property Value in Solihull and Birmingham?

Thinking about whether a home extension will increase your property value in Solihull or Birmingham? Adding an extension can be a smart investment, saving you money on moving costs, stamp duty, and solicitors’ fees. However, to truly benefit, it’s important to ensure your extension adds more value than it costs.

Key Factors that Influence Property Value with Extensions in Solihull:

  • Financial Viability: Before starting your extension, check whether the cost is justified by the potential increase in your property’s value. Consult local estate agents and look into current property prices in Solihull and Birmingham to determine if the investment will pay off in the long run.

  • Resale Potential: To maximise the resale value of your home, design the extension with the local market in mind. Popular features like open-plan kitchen-diners, additional bedrooms, and modern bathrooms can make your home more attractive to future buyers.

Looking to add value to your home with an extension? Contact McTernan Design today to discuss how to make the most of your property in Solihull or Birmingham.

Single vs Double-Storey Extensions: Which is Right for Your Solihull or Birmingham Home?

If you’re considering a home extension in Solihull, Birmingham, or the West Midlands, it’s important to weigh the pros and cons of single-storey vs double-storey extensions. Each option offers unique benefits based on your budget and space requirements.

Advantages of Single-Storey Extensions in Solihull:

  • Cost-Effective: Single-storey extensions are typically cheaper, with fewer foundation and steelwork requirements. They’re perfect for extending ground-floor spaces like kitchens, garden rooms, or home offices.

  • Easy Planning: Often simpler to plan and build, single-storey extensions usually have fewer planning restrictions, making the process faster.

Benefits of Double-Storey Extensions in Birmingham:

  • Maximising Space: While more expensive, double-storey extensions give you more room by adding ground-floor and upper-floor space. This option is ideal for homes where you want to increase the overall footprint.

  • Value Addition: A double-storey extension can significantly enhance your property’s value, particularly in desirable areas like Birmingham.

Still unsure which option is right for you? Contact McTernan Design for a consultation and discover the best extension type for your Solihull or Birmingham home.

Single-Storey Extension Design Ideas That Meet Planning Permission in Solihull and Birmingham

Explore these planning permission-compliant design ideas for your single-storey extension to create a functional and aesthetically pleasing space in Solihull, Birmingham, and the West Midlands:

Planning Permission-Friendly Roof Designs:

  • Mono-Pitch Tiled Roof with Velux Windows: This design adds height, natural light, and complies with local planning regulations in Solihull and Birmingham. Ideal for creating a vaulted ceiling and bringing in extra daylight.

  • Flat Rubber Roof with Lantern Window: A budget-friendly option that provides abundant light and meets planning guidelines for single-storey extensions.

  • Sedum Roof with Flat Panel Windows: For an eco-friendly extension, a sedum roof combined with flat panel windows is a modern, sustainable option. It integrates natural greenery and fits well within permitted development in Solihull.

Smart Space Solutions:

  • Lean-To Side Extension: Perfect for using narrow or unused spaces, this extension style offers additional living space without encroaching on your garden area. Popular in Solihull and Birmingham for meeting planning permission requirements.

  • Mansard Roof Design: A classic option for homeowners looking to add headroom while maintaining compact dimensions. This design meets local planning guidelines and works well for homes in the West Midlands.

Premium Extension Features:

  • Crittall Door Design or Structural Glass Box: For a premium look, Crittall-style doors or a structural glass box create a seamless connection to outdoor spaces while enhancing natural light. These designs are permitted under planning regulations in Birmingham and Solihull.

How Big Can My Extension Be in Solihull or Birmingham? Key Guidelines and Planning Rules

When planning your home extension in Solihull or Birmingham, the allowable size depends on local planning regulations, your property type, and your personal preferences. Although there aren’t strict size rules, certain guidelines help ensure compliance with local planning authorities.

Solihull Extension Size Limits:

  • Planning Permission: In Solihull, you will typically need planning permission if your extension covers more than half your garden. Projects that significantly alter the property’s appearance also require permission.

  • Height Restrictions: Extensions should not be higher than the existing house. For side extensions, roofs and walls may need to be set back by approximately one brick length to meet Solihull Council guidelines.

Birmingham Extension Planning Rules:

  • Local Authority Regulations: In Birmingham, the size and height of extensions are subject to strict planning rules. Extensions that are higher than your original home or cover too much garden space often require permission.

  • Side Extensions: When planning a side extension in Birmingham, the roof and wall height must conform to local setback rules, ensuring the new structure blends with the existing property.

Key Considerations for Extension Size:

  • Planning Permission: You will need permission for larger projects that cover more than half of your garden or exceed local height restrictions. Consult Solihull Council or Birmingham City Council for specific guidance.

  • Local Authority Guidelines: Always verify local rules or work with a professional to ensure compliance with local planning regulations. McTernan Design offers tailored advice to help navigate these requirements.

Seamless Integration: How to Make Your Extension Feel Like Part of Your Solihull or Birmingham Home

Making sure your home extension feels like a natural continuation of your existing property is essential for creating a unified space. For homeowners in Solihull and Birmingham, here’s how to ensure a seamless connection between old and new:

Key Tips for Seamless Integration:

Open Junctions Between Old and New Areas:

To make your extension feel like a true part of your home, create open junctions between the old and new spaces—especially for kitchen/diner extensions. This approach allows for a smooth transition, ensuring the spaces flow naturally together.

Hidden Structural Supports:

To maintain clean lines in your design, structural engineers can provide calculations for necessary joists and beams that remain hidden in the ceiling. This prevents visible structural elements from interrupting your design.

Consistent Flooring and Finishes:

Using the same flooring and finishes throughout both the extension and the existing house helps unify the spaces. This consistency ensures that your Solihull or Birmingham extension feels like an integral part of the home.

Matching Architectural Details:

Details like skirting boards, architraves, and coving should match between the old and new areas to create a consistent and cohesive aesthetic throughout the property.

Looking to seamlessly integrate your extension in Solihull or Birmingham? Contact McTernan Design to explore how we can help create a harmonious blend between your new and existing spaces.

Essential Insurance Coverage for Home Extensions in Solihull and Birmingham

Planning a home extension in Solihull or Birmingham? It’s important to have the right insurance in place. Standard home insurance and your builder's public liability coverage may not fully protect against the risks involved in construction. Here's what you need:

Essential Insurance Types for Home Extensions:

Extension-Specific Insurance: This specialised policy covers all aspects of your extension project, including:

  • Your Existing Home: Protection against any damage that may occur to your existing structure during the construction process.

  • New Work: Coverage for the extension itself, ensuring any partially completed work is protected.

  • Materials and Equipment: Insurance for materials and equipment on-site to safeguard against theft or damage.

  • Public Liability Insurance: This covers potential liability to third parties, such as neighbours or passers-by, in the event of injury or property damage during construction.

Need expert advice on ensuring your Solihull or Birmingham home extension is fully protected? Contact McTernan Design to guide you through the necessary insurance coverage for your project.

Customised Single Storey Extension Plans for Solihull, Birmingham, and the West Midlands

Creating detailed and accurate single-storey extension plans is crucial for the success of your project in Solihull, Birmingham, and across the West Midlands. Whether you're considering a rear extension or an L-shaped extension, McTernan Design offers bespoke solutions tailored to your specific needs.

Single Storey Extension Ideas:

Modern and Traditional Designs: From sleek, contemporary designs to more traditional styles, we provide a broad range of single-storey extension ideas that complement your home’s character and boost its value.

Detailed Extension Plans: Our team creates comprehensive plans for your extension, ensuring the new space matches both your aesthetic preferences and functional requirements.

Interior Design for Single Storey Extensions:

Maximising Space and Light: We focus on interior layouts that optimise space and natural light, guaranteeing a smooth transition between the old and new parts of your home.

Contemporary Extension Designs: For a modern look, we integrate the latest architectural trends and technologies into your single-storey extension, creating a stylish, efficient addition.

Custom Bungalow Extension Plans in Birmingham:

Bungalow-Specific Designs: Bungalow owners can take advantage of our customised extension plans, designed to enhance the unique charm and functionality of their home. We offer ideas specifically tailored to bungalow properties in Birmingham and surrounding areas.

Looking for a tailored single-storey extension plan? Contact McTernan Design today for a consultation on your extension in Solihull, Birmingham, or the West Midlands.

How a Single Storey Extension Can Increase Your Property Value in Solihull and Birmingham

A common question homeowners in Solihull and Birmingham ask is, "Does a single-storey extension add value?" The answer is a resounding yes. A well-designed extension not only provides additional living space but also significantly increases your property’s market value.

How Much Value Can a Single Storey Extension Add?

The amount of value a single-storey extension can add to your home depends on factors like size, quality, and design. On average, an extension can increase your home’s value by up to 20%. Expanding your home’s usable space makes it more attractive to potential buyers, increasing your property’s marketability.

Why Single Storey Extensions Are a Smart Investment in Solihull and Birmingham:

  • High Demand in the UK Market: In Solihull and Birmingham, single-storey extensions are highly sought after by homeowners looking to expand their living space without the complexities of multi-storey builds. This makes them a wise investment to boost your home’s appeal.

  • Proven Value Addition: Adding a single-storey extension is a proven way to increase your home’s value. Whether it’s for a larger kitchen, open-plan living area, or an additional bedroom, the flexibility of a single-storey extension makes it an attractive upgrade.

Curious about how much value a single-storey extension could add to your home in Solihull or Birmingham? Contact McTernan Design today for a consultation.

Expert Planning and Building Control Drawings in Solihull, Birmingham, and the West Midlands by McTernan Design

Visit our projects
Solihull single-storey rear extension drawings by McTernan Design, showcasing plans to expand and enhance family living space with a modern and functional design.
Warwickshire single-storey extension ideas by McTernan Design, featuring innovative concepts to expand living spaces with modern design and seamless integration.
Solihull single-storey extension design by McTernan Design, showcasing tailored solutions for enhancing home spaces with modern aesthetics and functionality.
Solihull single-storey rear extension ideas by McTernan Design, offering creative solutions to expand family living spaces with stylish and functional designs.

Solihull Porch and Single-Storey Rear Extension Planning Permission

The project aimed to revitalise a dated 1980s family home in Knowle, Solihull through a porch and single-storey rear extension.

Key Features of the Extension Project:

  • Front Elevation Enhancements: The existing porch was demolished, and a new entrance was created with a feature pentagon gable window above the repositioned front door. The kerb appeal was further improved by adding vertical battens with a shadow gap detail to the front elevation. The failing flat garage roof was also upgraded.

  • Rear Extension Design: At the back of the property, a new mono-pitch roof extension with roof light windows was added, bathing the newly configured open-plan kitchen and dining area in natural light.

  • Internal Modifications: Inside, a partial garage conversion provided space for a new study and downstairs toilet, enhancing the functionality of the home.

Architectural Planning Drawings for Extensions in Solihull, Birmingham, and the West Midlands

  • Design and Planning for Home Renovations by McTernan Design

    Comprehensive Guide to Single-Storey Rear Extensions in Solihull, Birmingham, and the West Midlands

    Discover everything you need to know about adding a single-storey rear extension to your home with McTernan Design. Whether you're looking to avoid the hassle of moving, increase your property value, or add a personal touch to your living space, rear extensions are an excellent solution. Perfect for growing families or those desiring additional rooms, these extensions can be custom-designed to include anything from a spacious kitchen to an extra bedroom.

    Planning Permission and Building Regulations

    Ensure you have all necessary approvals before starting your project. This includes planning permission, building regulations approval, and party wall agreements (if applicable).

    Permitted Development Rights and Neighbour Consultation Scheme

    With permitted development rights, most single-storey rear extensions don’t require full planning permission, provided they comply with specific conditions and your home isn’t in a designated area, such as a conservation zone.
    There are some controlling factors which determine how wide the extension can be using Permitted Development rights. A lawful development certificate and prior approval application may be necessary for larger projects, involving neighbour consultations to ensure community agreement.

    Project Timeline

    The construction of a single-storey rear extension typically takes 2-4 months, depending on the project's complexity and location. Including design time, approvals, and application processes, the total duration from start to finish can range from 9 to 12 months.

    Choosing the Right Builder

    Selecting a competent builder is crucial. We recommend consulting with 2-3 local contractors, reviewing their past work, and speaking with both recent and older clients to assess the quality and durability of their construction.

    Start Your Dream Extension Today – Contact McTernan Design for a Free Consultation

    Ready to enhance your home with a single-storey rear extension? Contact McTernan Design today to discuss your project and learn how our expert design and planning services can help you create the perfect addition to your home.

Contact us to discuss extending your home.

Why move when you can improve?

(and forget Stamp Duty)

mark@mcternandesign.co.uk
07955 572811

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