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Lee Townsend
Need to find an Extension Builder near you for all your extension buildering work?
Lp Townsend Brickwork provides a local, trusted extensio...
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...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
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...
Sharp Building Ltd is an established and experienced local extension builder in Denham. Please contact us for a free, no obligation quote and compe...
Mario Prajar Building Services is an established and experienced local extension builder in Denham. Please contact us for a free, no obligation quo...
Need to find an Extension Builder near you for all your extension buildering work?
MAX CONSTRUCTION LTD provides a local, trusted extension...
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...
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...
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 ...

Garden offices range from the cheapest of £9,880 (MAX CONSTRUCTION LTD based in HA4) to the dearest of £10,464 (AV Home Improvements based in WD19), but these are only estimates.
The best way to compare costs is to get actual quotes.
Get rates and quotes to build a garden office in Denham by posting a job with HaMuch. We'll send it to extension builders in Denham.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Garden Office near Hillingdon | £43 | £276 |
| Garden Office near Gerrards Cross | £43 | £283 |
| Garden Office near Rickmansworth | £43 | £282 |
| Garden Office near Watford | £43 | £280 |
| Garden Office near Harrow | £43 | £270 |
| Garden Office near Slough | £42 | £272 |
| Garden Office near Bushey | £43 | £278 |
| Garden Office near Windsor & Maidenhead | £42 | £272 |
| Garden Office near Windsor | £41 | £271 |
| Garden Office 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 - £17,658

Two storey extension - £88,236

Build a timber frame extension - £26,158

Build a swimming pool - £81,158

Single storey extension - £58,152

Side return extension - £43,273

Install an RSJ - £2,358

Outbuilding - £10,158

Build a Mansard loft conversion - £52,158

Loft conversion - £35,228

Build a kitchen extension - £42,158

Hip to gable loft conversion - £42,158

Granny annexe - £87,158

Garden office - £10,158

Convert a Garage - £16,158

Garage - £18,658

Build a flat roof extension - £22,158

Build a dormer loft conversion - £42,158

Concrete foundations - £6,408

Convert a bungalow loft - £29,158

Convert a basement - £39,273