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
Understanding the costs of your extension can help you budget effectively and avoid any unexpected expenses down the road. At Good Design & Build, we provide detailed, itemised quotes that cover all aspects of your project, ensuring there are no surprises along the way. Our approach is founded on over 12 years of experience, combining full transparency with expert project management. We work closely with you to develop a plan that delivers a high-quality extension, guiding you through each stage from the first consultation to the final handover.
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
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.
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Teddington
Station Road SW4 7PA
We completed this exciting project for our clients on Station Road, a quaint residential area in the heart of Teddington.
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Leyton
Windsor Road E10
We completed this kitchen extension on Windsor Road, a charming residential street nestled in the heart of Leyton.
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
Teddington
Station Road SW4 7PA
We completed this exciting project for our clients on Station Road, a quaint residential area in the heart of Teddington.
Learn more
Leyton
Windsor Road E10
We completed this kitchen extension on Windsor Road, a charming residential street nestled in the heart of Leyton.
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.
The cost of a house extension begins at £45,000 but can fluctuate depending on the project’s size and other factors, including design, structural alterations, and the materials selected.
Some house extensions fall under permitted development, but larger or more complex designs will require planning permission.
Yes, a well-designed extension can add to your property’s value making it a smart investment if you are looking to expand the living space of your home.
Options include rear extensions, side extensions, double-storey extensions and wrap-around extensions.
A single-storey extension adds space on one level, while a double-storey extension adds space on two levels, significantly increasing your home’s living space and size.
This includes the size of the extension, complexity of the design, type of materials used, and any structural work required.
To estimate your budget, consider the size and scope of your project, typical costs per square meter for your area, and any additional features or high-end finishes you want.
To make your house extension more energy efficient, consider incorporating high-quality insulation, energy-efficient appliances and eco-friendly materials.