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
The same home. A different experience.
As a top design and construction company in London, Good Design Build is well-known for its expertise in loft conversions.
We take the time to understand each client’s specific requirements and preferences. From there, we develop a custom quotation and detailed project plan tailored to their needs.
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.
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
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’re committed to delighting our clients, as much with our approach as with our solutions. Our values run through every aspect of what we do – from the moment you commission us, to the moment we hand over the keys.
Loft conversion costs in London are £40,000 to £70,000 on average excluding VAT and fees. The costs will vary depending on the size and complexities of the conversion. Good Design & Build loft conversion costs are as follows:
- Room in the roof conversion (basic) – £1,150 – £1,350 per square metre
- Dormer loft extension – £1,250 – £1,450 per square metre
- Mansard extension – £1,500 – £2,500 per square metre
- Hip-to-gable extension – £1,500 – £2,500 per square metre
- Change of roof structure – £1,350 – £1,550 per square metre
Generally loft conversions fall under permitted development and you do not need planning permission. Although this may not apply to certain properties that are in conservation area or the loft conversion needing to raise the ridge height. You can find more information here.
Not at all. The old water tank can be decommissioned by our qualified plumbers. Chimney can either be boarded out or totally removed to create more floor space depending on your requirement.
You can easily check this if you have loft access hatch and ladder. Try and measure the distance from top of your first floor ceiling joists to the underside of loft ridge timber. You need minimum 2.5M to achieve the floor to ceiling height of 2M which is minimum requirement. If your loft height falls short of 2.5M, you my need to drop the first floor ceilings to achieve minimum height.
It normally takes approx. 8-10 weeks to complete a loft conversion depending on the type and size.
If your property is suitable for a dormer loft conversion and you are in the need of extra space in the house, you should definitely consider the loft conversion. It is the most economical way to maximise the potential of your property and create more space without having to move.
Loft conversion is the best way to add value to your property. Recent research carried out by the Nationwide Building Society has stated that a loft conversion could add up to 20% to the value of your home. If your property is valued at £500,000, that’s a whopping increase of up to £100,000!
Simply put – YES. Lot conversion is cheaper and less disruptive as compared to an extension which involves foundation, brickwork, etc. Loft project usually requires a steel and timber construction which is quick and economical.
