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Lp Townsend Brickwork
Lee Townsend
Need to find an Extension Builder near you for all your extension buildering work?
Lp Townsend Brickwork provides a local, trusted extensio...
"Single storey extension" - SL9, job posted 27/09/26
JJSR Construction Ltd
J Wijayamohan
JJSR Construction Ltd is an established and experienced local extension builder in Denham. Please contact us for a free, no obligation quote and co...
"Two storey extension" - WD3, job posted 13/05/26
T M Builder
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
"Outbuilding" - HA4, job posted 16/03/26
AV Home Improvements
In an unstable market house extensions are often the most viable option, helping you to get the most out of the space you have without the addition...
"Cost to build a single storey extension rear roughly 4x5 and build a dormer loft conversion with ceilings lowered to get height in loft on a terraced house." - HA4, job posted 17/09/25
Sharp Building Ltd
Sharp Building Ltd is an established and experienced local extension builder in Denham. Please contact us for a free, no obligation quote and compe...
"Garage conversion" - PINNER, job posted 24/03/25
Mario Prajar Building Services
Mario Prajar Building Services is an established and experienced local extension builder in Denham. Please contact us for a free, no obligation quo...
"Outbuilding" - HA4, job posted 11/03/25
MAX CONSTRUCTION LTD
Need to find an Extension Builder near you for all your extension buildering work?
MAX CONSTRUCTION LTD provides a local, trusted extension...
"Two storey extension" - RUISLIP, job posted 04/12/24
RLC Construction
RLC Construction are here to help customers who need an Extension Builder in Denham. We offer a competitive rate to complete all your extension bui...
"Extension double story" - HA4, job posted 04/04/24
Vital Builders
Vital Builders are here to help customers who need an Extension Builder in Denham. We offer a competitive rate to complete all your extension build...
C T Edwards
Relax... you have found a reliable extension builder in Denham. C T Edwards is a friendly and reliable company based in Denham who consider no job ...
Building Service and Support Ltd
Relax... you have found a reliable extension builder in Denham. Building Service and Support Ltd is a friendly and reliable company based in Denham...
J K GENERAL BUILDING LTD
Need to find an Extension Builder near you for all your extension buildering work?
J K GENERAL BUILDING LTD provides a local, trusted exten...
ALG Renovations
ALG Renovations is a well established, trustworthy, reliable and professional operation with over 17 years experience myself in the trade, base...
MRE Maintenance Services
MRE Maintenance Services is an established and experienced local extension builder in Denham. Please contact us for a free, no obligation quote and...
BeautifulRenovation
BeautifulRenovation are here to help customers who need an Extension Builder in Denham. We offer a competitive rate to complete all your extension ...
Sherry Construction
Experienced extension builder ready to quote for your work. Sherry Construction is the best extension builder in Denham. No obligation free quotes ...
EIC Builders Ltd
EIC Builders Ltd are here to help customers who need an Extension Builder in Denham. We offer a competitive rate to complete all your extension bui...
BDR Home Improvement
BDR Home Improvement are here to help customers who need an Extension Builder in Denham. We offer a competitive rate to complete all your extension...
MJ Builders (London) Ltd
Hardeep Samra
MJ Builders (London) Ltd are here to help customers who need an Extension Builder in Denham. We offer a competitive rate to complete all your exten...
Chrysalis
Chrysalis are here to help customers who need an Extension Builder in Denham. We offer a competitive rate to complete all your extension buildering...
Compare Denham extension builders rates
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Extension Builders near Hillingdon | £43 | £276 |
| Extension Builders near Gerrards Cross | £43 | £283 |
| Extension Builders near Rickmansworth | £43 | £282 |
| Extension Builders near Watford | £43 | £280 |
| Extension Builders near Harrow | £43 | £270 |
| Extension Builders near Slough | £42 | £272 |
| Extension Builders near Bushey | £43 | £278 |
| Extension Builders near Windsor & Maidenhead | £42 | £272 |
| Extension Builders near Windsor | £41 | £271 |
| Extension Builders near Ealing | £44 | £275 |
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 - £26,192
Garden office - £10,192
Granny annexe - £87,192
Build a flat roof extension - £22,192
Convert a Garage - £16,192
Hip to gable loft conversion - £42,192
Convert a bungalow loft - £29,192
Build a dormer loft conversion - £42,192
Build a swimming pool - £81,192
Build a Mansard loft conversion - £52,192
Concrete foundations - £6,442
Underpin a building - £17,692
Two storey extension - £88,288
Convert a basement - £39,660
Side return extension - £43,660
Loft conversion - £35,550
Garage - £18,692
Single storey extension - £58,840
Outbuilding - £10,192
Install an RSJ - £2,392
Build a kitchen extension - £42,192
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