Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Lee Townsend
Need to find an Extension Builder near you for all your extension buildering work?
Lp Townsend Brickwork provides a local, trusted extensio...
BeautifulRenovation are here to help customers who need an Extension Builder in Denham. We offer a competitive rate to complete all your extension ...
MRE Maintenance Services is an established and experienced local extension builder in Denham. Please contact us for a free, no obligation quote and...
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...
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 are here to help customers who need an Extension Builder in Denham. We offer a competitive rate to complete all your extension bui...
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...
Trusted and professional extension builder in Denham. Experienced in all extension buildering work and keeping within budget and on quote. DC Build...
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...

Outbuilding costs in Denham range from the cheapest of £9,680 (Lp Townsend Brickwork based in SL2) to the dearest of £10,312 (T M Builder based in UB4), but these are just estimates.
Comparing extension builders estimates for building an outbuilding gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.
Get rates and quotes to build an outbuilding in Denham by posting a job with HaMuch and we will send it to extension builders.
"Outbuilding" - HA4, job posted 01/01/70
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Outbuilding near Hillingdon | £63 | £276 |
| Outbuilding near Gerrards Cross | £43 | £282 |
| Outbuilding near Rickmansworth | £42 | £278 |
| Outbuilding near Watford | £43 | £278 |
| Outbuilding near Harrow | £43 | £270 |
| Outbuilding near Slough | £42 | £272 |
| Outbuilding near Bushey | £42 | £276 |
| Outbuilding near Windsor & Maidenhead | £42 | £272 |
| Outbuilding near Windsor | £41 | £271 |
| Outbuilding near Ealing | £44 | £275 |
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.

Underpin a building - £17,585

Two storey extension - £88,127

Build a timber frame extension - £26,085

Build a swimming pool - £81,085

Single storey extension - £56,696

Side return extension - £42,454

Install an RSJ - £2,285

Outbuilding - £10,085

Build a Mansard loft conversion - £52,085

Loft conversion - £34,545

Build a kitchen extension - £42,085

Hip to gable loft conversion - £42,085

Granny annexe - £87,085

Garden office - £10,085

Convert a Garage - £16,085

Garage - £18,585

Build a flat roof extension - £22,085

Build a dormer loft conversion - £42,085

Concrete foundations - £6,335

Convert a bungalow loft - £29,085

Convert a basement - £38,454