ADO Builders is a trusted extension builder serving customers in GU1 and the surrounding area. Contact us to today to get a competitive quote for e...
Patrick Elson
Paramount Brickwork Limited is an established extension buildering business in GU1. We come highly recommended and provide competitive quotes for y...
Kevin Warne
K P WARNE BUILDERS is an established extension buildering business in GU1. We come highly recommended and provide competitive quotes for your work....
We provide structural engineering design and construction service (D&B) Our dedicated, enthusiastic and highly qualified staff to find the appropri...
Cannon Build Solutions is a local family-run building firm whose strong reliable reputation has been well established in North-West London and Buck...
From £10,232
Experienced extension builder ready to quote for your work. Arrus Knoble Ltd is the best extension builder in GU1. No obligation free quotes and ma...
From £10,320
M &M GENERAL BUILDING is an established extension buildering business in GU1. We come highly recommended and provide competitive quotes for your wo...
From £12,608
Carl Hancock
With well over a decade of marketing and web design experience working for a variety of tradespeople from cleaners through to builders, Websites 4 ...
From £10,376
Martin Ross
Local business for local people... Established in 1980.....so plenty of local knowledge One man business, honest, reliable, hard working ...
From £10,464
Victorian Roofing & Property Maintenance is an established and experienced local extension builder in GU1. Please contact us for a free, no obligat...

Garden offices range from the cheapest of £9,712 (K P WARNE BUILDERS based in GU7) to the dearest of £12,608 (Websites 4 Trades based in GU7), 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 GU1 by posting a job with HaMuch. We'll send it to extension builders in GU1.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Garden Office near Guildford | £53 | £298 |
| Garden Office near Woking | £43 | £277 |
| Garden Office near Ash Vale | £41 | £277 |
| Garden Office near Waverley | £68 | £313 |
| Garden Office near Aldershot | £41 | £275 |
| Garden Office near Great Bookham | £42 | £281 |
| Garden Office near New Haw | £43 | £273 |
| Garden Office near Farnborough | £41 | £272 |
| Garden Office near Camberley | £41 | £282 |
| Garden Office near Farnham | £41 | £276 |
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 - £18,073

Two storey extension - £88,859

Build a timber frame extension - £26,573

Build a swimming pool - £81,573

Single storey extension - £66,456

Side return extension - £47,944

Install an RSJ - £2,773

Outbuilding - £10,573

Build a Mansard loft conversion - £52,573

Loft conversion - £39,120

Build a kitchen extension - £42,573

Hip to gable loft conversion - £42,573

Granny annexe - £87,573

Garden office - £10,573

Convert a Garage - £16,573

Garage - £19,073

Build a flat roof extension - £22,573

Build a dormer loft conversion - £42,573

Concrete foundations - £6,823

Convert a bungalow loft - £29,573

Convert a basement - £43,944