Local KT14 extension builders; Sort by rates, availability, reviews & jobs
R & R Roofing Guildford
£46/hour
£247/day
Byfleet, KT14
R & R Roofing Guildford are here to help customers who need an Extension Builder in KT14. We offer a competitive rate to complete all your extensio...
"Garage" - KT15, job posted 15/09/25
PURE DESIGN AND BUILD
£44/hour
£280/day
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
CRESSWELL DESIGN & BUILD
£45/hour
£287/day
Byfleet, KT14
CRESSWELL DESIGN & BUILD are here to help customers who need an Extension Builder in KT14. We offer a competitive rate to complete all your extensi...
JDM (D&B) Ltd
£50/hour
£316/day
As a successful Surrey Property building Company, we pride ourselves not only on what we produce for our clients, but also the manner that we appro...
INTEGRA BUILDERS LTD
£47/hour
£301/day
Byfleet, KT14
Relax... you have found a reliable extension builder in KT14. INTEGRA BUILDERS LTD is a friendly and reliable company based in KT14 who consider no...
Form Projects
£49/hour
£309/day
Form Projects is an established and experienced local extension builder in KT14. Please contact us for a free, no obligation quote and competitive ...
GJ Roofing
£120/hour
£216/day
Byfleet, KT14
Welcome to GJ Roofing. We are a family run business based in Surrey which cover all surrounding areas with over 15 years experience. We undertake a...
Tolwey
£48/hour
£302/day
Need to find an Extension Builder near you for all your extension buildering work?
Tolwey provides a local, trusted extension buildering se...
Refined Space
£47/hour
£295/day
Refined Space is a trusted extension builder serving customers in KT14 and the surrounding area. Contact us to today to get a competitive quote for...
Refined Space
£45/hour
£282/day
We’re a design & build company based in Surrey that helps people transform their living environments with user-centred design and expert craftsma...
Tarahomes
£40/hour
£249/day
Trusted and professional extension builder in KT14. Experienced in all extension buildering work and keeping within budget and on quote. Tarahomes ...
EcoWoodDesign
£42/hour
£267/day
EcoWoodDesign are here to help customers who need an Extension Builder in KT14. We offer a competitive rate to complete all your extension builderi...
Quickly find an Extension Builder in KT14
Use these steps to find Extension Builders in KT14 for FREE!
- Post your job: Click "Get quotes" and briefly describe your job.
- Enter your details: We’ll match you with Extension Builders in KT14. 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 KT14 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 - £26,232
Garden office - £10,232
Granny annexe - £87,232
Build a flat roof extension - £22,232
Convert a Garage - £16,232
Hip to gable loft conversion - £42,232
Convert a bungalow loft - £29,232
Build a dormer loft conversion - £42,232
Build a swimming pool - £81,232
Build a Mansard loft conversion - £52,232
Concrete foundations - £6,482
Underpin a building - £17,732
Two storey extension - £88,348
Convert a basement - £40,110
Side return extension - £44,110
Loft conversion - £35,925
Garage - £18,732
Single storey extension - £59,640
Outbuilding - £10,232
Install an RSJ - £2,432
Build a kitchen extension - £42,232
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