From £9,744
Trusted and professional extension builder in CT21. Experienced in all extension buildering work and keeping within budget and on quote. Stade Stre...
From £9,840
Trusted and professional extension builder in CT21. Experienced in all extension buildering work and keeping within budget and on quote. Sprinks Co...
From £9,776
Tom Clark - Raison Home UK is a trusted extension builder serving customers in CT21 and the surrounding area. Contact us to today to get a competit...
From £9,936
Experienced extension builder ready to quote for your work. THE EAST CLIFF BUILDING CO LTD is the best extension builder in CT21. No obligation fre...
From £9,664
Pentland Homes is an established extension buildering business in CT21. We come highly recommended and provide competitive quotes for your work.
From £9,664
Experienced extension builder ready to quote for your work. Buildstead is the best extension builder in CT21. No obligation free quotes and many ha...
From £9,816
Relax... you have found a reliable extension builder in CT21. LEVEL CONSTRUCTION is a friendly and reliable company based in CT21 who consider no ...
From £9,736
Need an Extension Builder in CT21? M LONG T/A MJ BUILDINGS has been helping local clients (20 mile radius) with their extension buildering jobs for...
From £9,656
John Nicoll trained as a joiner and carpenter in St Andrew's, Fife. For over 30 years, he has been operating in the London area - setting up 5 Ways...
From £10,184
Goddard’s Home Improvement’s Ltd is a family-run business with over 16 years’ experience in the building industry. We know it can be hard to ...

Garden offices range from the cheapest of £9,656 (5 Ways Carpentry based in CT15) to the dearest of £10,184 (Goddard’s Home Improvement’s Ltd based in TN28), 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 CT21 by posting a job with HaMuch. We'll send it to extension builders in CT21.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Garden Office near Hythe | £31 | £228 |
| Garden Office near Folkestone | £31 | £233 |
| Garden Office near Ashford | £36 | £256 |
| Garden Office near Dover | £29 | £226 |
| Garden Office near Canterbury | £31 | £232 |
| Garden Office near Deal | £26 | £199 |
| Garden Office near Faversham | £34 | £235 |
| Garden Office near Whitstable | £28 | £214 |
| Garden Office near Herne Bay | £28 | £213 |
| Garden Office near Swale | £35 | £241 |
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 - £17,302

Two storey extension - £87,702

Build a timber frame extension - £25,802

Build a swimming pool - £80,802

Single storey extension - £51,032

Side return extension - £39,268

Install an RSJ - £2,002

Outbuilding - £9,802

Build a Mansard loft conversion - £51,802

Loft conversion - £31,890

Build a kitchen extension - £41,802

Hip to gable loft conversion - £41,802

Granny annexe - £86,802

Garden office - £9,802

Convert a Garage - £15,802

Garage - £18,302

Build a flat roof extension - £21,802

Build a dormer loft conversion - £41,802

Concrete foundations - £6,052

Convert a bungalow loft - £28,802

Convert a basement - £35,268