Bespoke Design & Planning
Over 12 Years of Experience
Free Consultation & Itemised Quotes
Full Cost Transparency & Project Management
Insurance Backed Warranty
Bespoke Design & Planning
Over 12 Years of Experience
Free Consultation & Itemised Quotes
Full Cost Transparency & Project Management
Insurance Backed Warranty
At Good Design & Build, we specialise in single-storey rear extensions that enhance your home. Our extensions transform your spaces into bright, inviting living spaces, perfect for a modern kitchen, stylish dining room, or a cosy living room. From concept to completion, we’ll work closely with you to ensure that every detail reflects your vision. Enhance your living experience with an extension unique to your lifestyle while adding value and space to your home.
What Our Clients Say
Thank you to Amol and his entire team
“Thank you to Amol and his entire team for delivering us a fantastic extension to our newly purchased home. The guys were friendly and very professional during all stages”
Lisa
Twickenham TW2
Thank you Good Design & Build…
“Originally, we’d planned on this being a property to rent out to others. Since the loft conversion, we’ve fallen back in love with the place – and have now decided to move back here.”
George Banks
Richmond TW10
I would like to thank GDB…
“I would like to thank GDB for all of their hard work, ideas and inspiration and for being so approachable and easy to deal with during the our rear extension. I would happily recommend them to anyone thinking of starting a building project”
Debra
Mortlake SW14
My wife and I would like to say a huge thank you
“My wife and I would like to say a huge thank you to all the team at Good Design & Build. From the planning stage all the way through to completion they were meticulous with their design and helping us achieve our vision of our dream family home. We were supported all the way through, even when we wanted to make significant structural changes during the build. We are over the moon with the results achieved and quality of the building work and finishing is excellent. THANK YOU GOOD DESIGN & BUILD!!”
Xerxes Dalal
Potters Bar EN6
Good Design provided the architectural services
“Good Design provided the architectural services as well as building work. It was great to have both bundled into one. They were very flexible and great to work with - nothing was too much trouble. I would highly recommend them.”
Louise Murray
Twickenham TW1
We thoroughly enjoyed working with Amol
“We thoroughly enjoyed working with Amol and the Good Design & Build team on our recent house extension. We've been so happy with how the team helped design, plan and deliver the extension. Always very patient and informative of how the process will run, the team did a fantastic job and we're delighted with the results. The biggest compliment I can give them is that I'd happily work with Amol and the team again :).”
Benjamin Hammond
Twickenham TW11
Planning Permission & Permitted Development
Featured Projects
Stratford
Janson road E15
This project was completed in 2024, and the approx. budget was £90K.
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Hampstead
Park Road N8
This project was completed in 2024, and the approx. budget was £100K.
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Harlesden
Sellons Ave NW10 4HJ
The project included creating a master bedroom in the loft with an adjoining terrace.
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Fulham
Orbain Road SW6 7JZ
This project was completed in 2023 and the approximate budget was £101,000.
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Lambeth
Hetherington Road SW4
We completed this stunning project for our client Angus in Lambeth.
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Stratford
Janson road E15
This project was completed in 2024, and the approx. budget was £90K.
Learn more
Hampstead
Park Road N8
This project was completed in 2024, and the approx. budget was £100K.
Learn more
Harlesden
Sellons Ave NW10 4HJ
The project included creating a master bedroom in the loft with an adjoining terrace.
Learn more
Fulham
Orbain Road SW6 7JZ
This project was completed in 2023 and the approximate budget was £101,000.
Learn more
Lambeth
Hetherington Road SW4
We completed this stunning project for our client Angus in Lambeth.
Learn more
Frequently Asked Questions
We are a South West London-based design and build studio. We specialise in remodelling semis, loft conversions and kitchen extensions,Victorian and 1930s residential properties. We carry out projects from planning to completion. We are a friendly and professional team of architects, technicians, project managers and builders to help you at every stage.
In most cases, single-storey rear extensions fall under permitted development. However, this may vary based on your property type and location and whether your property is located in a conservation area.
A typical single-storey rear extension takes approximately 8-12 weeks, depending on the complexity of the build.
Yes, rear extensions can increase property value by up to 10-20%, depending on the type and size of the extension.
This depends on the size of the extension and your garden. We ensure to balance outdoor and indoor space while maximising your home’s potential.
Yes, our team ensures your extension complements your existing home.
Flat roofs are cost-effective, while pitched roofs offer better aesthetics and may allow for skylights to bring in more natural light.
Yes, our architects provide advanced CAD design drawings and structural specifications to ensure your project is a success.
Yes, Rear extensions are ideal for creating open-plan kitchen and living spaces, perfect for modern living.