From £38,130
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 £41,280
Our locally run, family building services company J&S Property Services has 65 years combined experience. We have been helping customers in London ...
From £36,150
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 £37,770
We do all aspect of work in construction from basement to new build loft extension refurbishments
From £37,410
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 £40,560
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 £38,850
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 £43,170
Business Email:info@ Glazing & Boarding With local glaziers available 24 hours a day, 7 days a week we...
From £37,770
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 £39,840
Trusted and professional extension builder in SE22. Experienced in all extension buildering work and keeping within budget and on quote. Vidanov Bu...

Comparing extension builders estimates for a Convert a basement gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes for the cost to convert a basement in SE22 by posting a job with HaMuch and we will 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