From £9,880
Experienced extension builder ready to quote for your work. CIA Construction Limited is the best extension builder in ME3. No obligation free quote...
From £10,064
Hyde Building Ltd are here to help customers who need an Extension Builder in ME3. We offer a competitive rate to complete all your extension build...
From £10,360
Need an Extension Builder in ME3? Ellis & James Builders Limited has been helping local clients (20 mile radius) with their extension buildering jo...
From £10,008
Over 35 years experience
We are Gas Safe registered
We are Verified
We pride ourselves on great custom...
From £10,616
HOUSE BUILDING SERVICES LIMITED is a trusted extension builder serving customers in ME3 and the surrounding area. Contact us to today to get a comp...
From £10,240
M&J Brickwork Ltd are a Chelmsford based Bricklaying & General Building company that operate throughout the Essex and South London...
From £11,232
Optimus Build Solutions delivers exceptional construction services in London and surronding areas. Specializing in bathroom and kitchen refurbishme...
From £10,216
Experienced extension builder ready to quote for your work. Liviu Toma is the best extension builder in ME3. No obligation free quotes and many hap...
From £10,256
Lover Build is an established and experienced local extension builder in ME3. Please contact us for a free, no obligation quote and competitive rat...
From £10,176
Witton & Pearce Builders in Essex is a trusted extension builder serving customers in ME3 and the surrounding area. Contact us to today to get a co...

Garden offices range from the cheapest of £9,880 (CIA Construction Limited based in RM18) to the dearest of £11,232 (Optimus Build Solutions based in Rm1), 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 ME3 by posting a job with HaMuch. We'll send it to extension builders in ME3.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Garden Office near Chatham | £39 | £254 |
| Garden Office near Gillingham | £39 | £253 |
| Garden Office near Rochester | £39 | £254 |
| Garden Office near Canvey Island | £39 | £256 |
| Garden Office near Gravesend | £40 | £260 |
| Garden Office near Stanford-le-Hope | £40 | £254 |
| Garden Office near Northfleet | £41 | £261 |
| Garden Office near Thurrock | £41 | £260 |
| Garden Office near Thundersley | £38 | £251 |
| Garden Office near Chafford Hundred | £41 | £261 |
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 - £17,805

Two storey extension - £88,457

Build a timber frame extension - £26,305

Build a swimming pool - £81,305

Single storey extension - £61,096

Side return extension - £44,929

Install an RSJ - £2,505

Outbuilding - £10,305

Build a Mansard loft conversion - £52,305

Loft conversion - £36,608

Build a kitchen extension - £42,305

Hip to gable loft conversion - £42,305

Granny annexe - £87,305

Garden office - £10,305

Convert a Garage - £16,305

Garage - £18,805

Build a flat roof extension - £22,305

Build a dormer loft conversion - £42,305

Concrete foundations - £6,555

Convert a bungalow loft - £29,305

Convert a basement - £40,929