Local TW17 extension builders
K & A Construction
£26/hour
£230/day
Relax... you have found a reliable extension builder in TW17. K & A Construction is a friendly and reliable company based in TW17 who consider no j...
"Single storey extension" - SHEPPERTON
Method Build Ltd
£39/hour
£245/day
At Method Build we take the stress out of home renovations. With transparent pricing, a systematic approach and regular progress updates, we ensure...
STL Lofts & Extensions Ltd
£36/hour
£238/day
If you are looking for a TW17 extension builder and you need something replaced, fitted, or fixed, contact STL Lofts & Extensions Ltd today. We are...
Offa Construction Ltd
£37/hour
£233/day
Offa Construction Ltd is an established business in TW17. We come highly recommended and provide competitive quotes for your work.
Aspire Design & Build Ltd
£39/hour
£245/day
Experienced extension builder ready to quote for your work. Aspire Design & Build Ltd is the best extension builder in TW17. No obligation free quo...
VDV Construction
£37/hour
£235/day
Need an Extension Builder in TW17? VDV Construction has been helping local clients (10 mile radius) with their jobs for many years. Get a quote to...
TOTUS
£37/hour
£232/day
Need to find an Extension Builder near you for all your work?
TOTUS provides a local, trusted service in and around TW17. Homeowners and ...
GJ Design and Build Ltd
£39/hour
£245/day
We are a Design and Build company with more than 20 years experience. We can help you with your extension, loft conversion, refurbishment, basement...
GJ Design and Build Ltd
£37/hour
£233/day
Experienced extension builder ready to quote for your work. GJ Design and Build Ltd is the best extension builder in TW17. No obligation free quote...
TATEBERRY DESIGN&CONSTRUCTION
£37/hour
£235/day
TATEBERRY DESIGN&CONSTRUCTION is an established business in TW17. We come highly recommended and provide competitive quotes for your work.
Wayne Croucher All Aspects of Brickwork & Landscaping
£37/hour
£290/day
Hi,
im Wayne croucher I have now been in the building and landscaping industry from a young age. I Got trained by a local builder also g...
Proxile Solutions Limited
£36/hour
£232/day
Experienced extension builder ready to quote for your work. Proxile Solutions Limited is the best extension builder in TW17. No obligation free quo...
OATLANDS
£39/hour
£245/day
Need an Extension Builder in TW17? OATLANDS has been helping local clients (10 mile radius) with their jobs for many years. Get a quote today.
...Redridge Developers UK
£39/hour
£245/day
At Redridge, our fundamental goal is to deliver the house that you want, on budget and on time. We take pride in our finished homes as they are wha...
Mulberry Design & Build Ltd
£39/hour
£245/day
General Building, Landscaping and Driveway Specialists. Some of the tasks we complete tasks such as refurbishments, extensions and conversions to d...
AMD Building Services
£37/hour
£237/day
Experienced extension builder ready to quote for your work. AMD Building Services is the best extension builder in TW17. No obligation free quotes ...
J H CONSTRUCTION
£37/hour
£235/day
Experienced extension builder ready to quote for your work. J H CONSTRUCTION is the best extension builder in TW17. No obligation free quotes and m...
Hanging Space
£37/hour
£234/day
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of work in TW17 an...
D&M Construction Bro. Ltd
£37/hour
£237/day
THE COMPREHENSIVE ALL LONDON BUILDING COMPANY\nD&M Construction Group Ltd can offer competitive quotes on all your building requirements. \
Quickly find an Extension Builder in TW17
Use these steps to find Extension Builders in TW17 for FREE!
- Post your job: Click "Get quotes" and briefly describe your job.
- Enter your details: We’ll match you with Extension Builders in TW17. We’ll notify you via text or email when an Extension Builder is available to quote.
- Select your Extension Builder: Compare Extension Builders interested in working with you. You can use HaMuch to safely message local TW17 Extension Builders or phone them directly - you’re in control!
The most important thing is do avoid handing over cash or paying large sums in advance. Be wary of paying cash for a cheaper job, i.e. to avoid VAT, you may be going down a slippery slope of not doing things properly which may eventually mean your job is also not done properly.
Agree when you intend to pay, ideally after you are satisfied with the completed job. If it is a big job agree a schedule of staged payments which is fair to both parties.
To avoid bad tradespeople and to ensure you can find them should they not answer a mobile;
- Get proper contact details and check them yourself
- Check if the company is verified on the Companies House website
- Get phone details, ideally a land line or 0800 number and check it
- Get a physical office address
Get quotes in writing by email or in person if possible. Getting quotes online or by text is ok (make sure you accept the offer by replying). For large projects make a written agreement, schedule of works and snagging plans as part of a working document. Also;
- Agree expected quality of workmanship and materials in advance
- When will work start and when will project be finished, what happens if project over runs ?
- How long is the guarantee on work and materials eg 12 months
- Discuss onsite behaviour in advance (no smoking, swearing or using mobile phones for non-work purposes)
- Agree that your Extension Builder will remove all debris and rubbish and what level of tidying up you want after job
Local Extension Builders in London Boroughs
Job estimates from extension builders near you
Whether you’re looking to extend your kitchen with a side return extension or you want to convert your basement into a liveable space, read our cost guides to get an idea of how much each project costs before getting a more accurate quote from our database of reliable tradespeople.

Build a timber frame extension - £25,928

Garden office - £9,928

Granny annexe - £86,928

Build a flat roof extension - £21,928

Convert a Garage - £15,928

Hip to gable loft conversion - £41,928

Convert a bungalow loft - £28,928

Build a dormer loft conversion - £41,928

Build a swimming pool - £80,928

Build a Mansard loft conversion - £51,928

Concrete foundations - £6,178

Underpin a building - £17,428

Two storey extension - £87,892

Convert a basement - £36,690

Side return extension - £40,690

Loft conversion - £33,075

Garage - £18,428

Single storey extension - £53,560

Outbuilding - £9,928

Install an RSJ - £2,128

Build a kitchen extension - £41,928
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