Rear Extensions in London
A well-designed rear extension can enhance your home by adding an open-plan kitchen, an extended dining area, or a cosy family space. Make the most of your property with a design tailored to your needs.
Why choose a Rear Extension with Build Team?
Add valuable extra room without the stress of moving.
A well-designed extension can boost your home’s market appeal.
Custom layouts that fit your existing home.
An efficient process from planning to completion.
Expert guidance on planning permission & regulations.
What is a Rear Extension?
A rear extension is an addition to the back of your home, creating new, functional living areas without altering the front of the property.Popular rear extension designs include modern glass-panelled spaces, open-plan kitchen diners, and multi-functional family rooms.
Whether you want to introduce more natural light, create a better connection to your garden, or reimagine your home's layout, Build Team delivers designs tailored to your lifestyle.
How to get design the right layout for your Rear Extension
A rear extension should complement your home’s existing structure while enhancing functionality, aesthetics, and natural light. At Build Team, we take a tailored approach to ensure your new space is both practical and beautifully finished.Our expert team will:
- Create thoughtful designs that improve flow and usability.
- Utilise skylights, bi-fold doors, and open-plan layouts for a bright, airy feel.
- Design clever cabinetry and built-in solutions to make the most of your space.
- Opt for high-performance insulation and glazing to reduce costs and enhance comfort.
Book a consultation to start designing your ideal extension today.
How much does a Rear Extension cost?
The cost of a rear extension varies based on size, materials, and design complexity. Here’s a rough estimate:- Basic rear extension: From £2,000 per square metre
- High-specification extension: From £2,500 per square metre
- Luxury designs: £3,000+ per square metre
At Build Team, we focus on cost-effective solutions without compromising on quality. Our experienced project managers oversee the build, while our trusted suppliers provide high-quality materials at competitive prices.
For a tailored estimate, use our extension cost calculator or contact our team for a personalised quote.
Getting planning permission for a Rear Extension
Many rear extensions fall under permitted development rights, meaning planning permission may not be required. However, if approval is needed, Build Team makes the process straightforward by managing everything – from measured surveys and expert planning advice to drawing development and application submissions.We liaise with local authorities to maximise approval chances and ensure full compliance with building regulations.
Let’s make your rear extension a reality. Book a consultation today, and we’ll handle the details while you focus on your dream space.
Rear Extension Design & Build Packages
At Build Team, we offer tailored design and build packages to suit your vision. Our expert team ensures every detail is meticulously planned and executed, our comprehensive design & build packages include:- Concept Design – Expert guidance on layout, style, and functionality.
- Planning & Permissions – Assistance with planning approval and building regulations compliance.
- Project Management – A dedicated team overseeing every stage of the build.
- Quality Craftsmanship – Skilled tradespeople ensuring exceptional finishes.
Your home deserves the best. Contact us now to start planning your dream rear extension and take the first step toward improving your living space!
Rear Extension FAQ
How much does a rear extension cost in London? +
Rear extensions in London start from around £2,000 per square metre for a basic build, rising to £2,500 for a higher specification and £3,000 or more for a detailed design. The final figure depends on the size, the glazing and the finishes you choose.
Do I need planning permission for a rear extension? +
Many rear extensions fall under permitted development, so planning permission is not always needed. Larger extensions, homes in conservation areas and most flats will usually need a full planning application. We assess your project and advise which route applies before any work begins.
How long does a rear extension take to build? +
Most rear extensions take between 12 and 18 weeks on site, depending on the size and complexity of the build. The design and planning stage beforehand typically adds a few months, so it is worth starting early.
How far can a rear extension project from the house? +
Under permitted development, a single-storey rear extension can usually project three metres for a terraced or semi-detached house, or four metres for a detached house, subject to conditions. Larger projections may be possible through the prior approval process or a full planning application.
Will a rear extension need a party wall agreement? +
If the work is near or on a shared boundary, you may need a party wall agreement with your neighbours. We assess this early and can arrange the necessary notices and surveyor input as part of the project.
