From £10,056
East Dulwich, SE22
Experienced extension builder ready to quote for your work. The Perfectionist is the best extension builder in SE22. No obligation free quotes and ...
From £10,336
Our locally run, family building services company J&S Property Services has 65 years combined experience. We have been helping customers in London ...
From £9,880
East Dulwich, SE22
FRIERN BUILDING LTD is an established extension buildering business in SE22. We come highly recommended and provide competitive quotes for your wor...
From £10,024
We do all aspect of work in construction from basement to new build loft extension refurbishments
From £9,992
London, SE22
Five Sextillion is an established and experienced local extension builder in SE22. Please contact us for a free, no obligation quote and competitiv...
From £10,272
BERNARD CONSTRUCTION LTD are here to help customers who need an Extension Builder in SE22. We offer a competitive rate to complete all your extensi...
From £10,120
Global Business BoxLttd are here to help customers who need an Extension Builder in SE22. We offer a competitive rate to complete all your extensio...
From £10,504
Business Email:info@ Glazing & Boarding With local glaziers available 24 hours a day, 7 days a week we...
From £10,024
Greater London, SE22
James Hall Property Solutions Ltd is a trusted extension builder serving customers in SE22 and the surrounding area. Contact us to today to get a c...
From £10,208
Trusted and professional extension builder in SE22. Experienced in all extension buildering work and keeping within budget and on quote. Vidanov Bu...

Garden offices range from the cheapest of £9,880 (FRIERN BUILDING LTD based in SE22) to the dearest of £10,504 (Babar Jeweler Shop based in SE21), 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 SE22 by posting a job with HaMuch. We'll send it to extension builders in SE22.
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 - £17,642

Two storey extension - £88,212

Build a timber frame extension - £26,142

Build a swimming pool - £81,142

Single storey extension - £57,832

Side return extension - £43,093

Install an RSJ - £2,342

Outbuilding - £10,142

Build a Mansard loft conversion - £52,142

Loft conversion - £35,078

Build a kitchen extension - £42,142

Hip to gable loft conversion - £42,142

Granny annexe - £87,142

Garden office - £10,142

Convert a Garage - £16,142

Garage - £18,642

Build a flat roof extension - £22,142

Build a dormer loft conversion - £42,142

Concrete foundations - £6,392

Convert a bungalow loft - £29,142

Convert a basement - £39,093