From £10,280
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...
From £10,312
Relax... you have found a reliable extension builder in Watford. Frame Brickwork is a friendly and reliable company based in Watford who consider n...
From £12,760
Trusted and professional extension builder in Watford. Experienced in all extension buildering work and keeping within budget and on quote. Design ...
From £10,424
Experienced extension builder ready to quote for your work. 1st Choice Builders UK is the best extension builder in Watford. No obligation free quo...
From £10,024
A&T Building is an established extension buildering business in Watford. We come highly recommended and provide competitive quotes for your work.
From £10,224
T N Roofing is an established extension buildering business in Watford. We come highly recommended and provide competitive quotes for your work.
From £10,144
Primrose Projects is an established and experienced local extension builder in Watford. Please contact us for a free, no obligation quote and compe...
From £10,464
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...
From £10,024
Cannon Build Solutions is an established extension buildering business in Watford. We come highly recommended and provide competitive quotes for yo...
From £10,224
Relax... you have found a reliable extension builder in Watford. C S C BUILDINGS LTD is a friendly and reliable company based in Watford who consid...

Garden offices range from the cheapest of £10,024 (A&T Building based in WD18) to the dearest of £12,760 (Design & Build Builders Ltd based in WD18), 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 Watford by posting a job with HaMuch. We'll send it to extension builders in Watford.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Garden Office near Watford | £43 | £278 |
| Garden Office near Bushey | £42 | £276 |
| Garden Office near Rickmansworth | £42 | £278 |
| Garden Office near Borehamwood | £42 | £270 |
| Garden Office near Harrow | £43 | £271 |
| Garden Office near Hillingdon | £63 | £276 |
| Garden Office near Gerrards Cross | £43 | £282 |
| Garden Office near St Albans | £63 | £288 |
| Garden Office near Dacorum | £42 | £269 |
| Garden Office near Hemel Hempstead | £42 | £270 |
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 - £17,988

Two storey extension - £88,732

Build a timber frame extension - £26,488

Build a swimming pool - £81,488

Single storey extension - £64,760

Side return extension - £46,990

Install an RSJ - £2,688

Outbuilding - £10,488

Build a Mansard loft conversion - £52,488

Loft conversion - £38,325

Build a kitchen extension - £42,488

Hip to gable loft conversion - £42,488

Granny annexe - £87,488

Garden office - £10,488

Convert a Garage - £16,488

Garage - £18,988

Build a flat roof extension - £22,488

Build a dormer loft conversion - £42,488

Concrete foundations - £6,738

Convert a bungalow loft - £29,488

Convert a basement - £42,990