From £2,256
Experienced extension builder ready to quote for your work. The Perfectionist is the best extension builder in East Dulwich. No obligation free quo...
From £2,536
Our locally run, family building services company J&S Property Services has 65 years combined experience. We have been helping customers in London ...
From £2,080
FRIERN BUILDING LTD is an established extension buildering business in East Dulwich. We come highly recommended and provide competitive quotes for ...
From £2,224
We do all aspect of work in construction from basement to new build loft extension refurbishments
From £2,192
Five Sextillion is an established and experienced local extension builder in East Dulwich. Please contact us for a free, no obligation quote and co...
From £2,472
BERNARD CONSTRUCTION LTD are here to help customers who need an Extension Builder in East Dulwich. We offer a competitive rate to complete all your...
From £2,320
Global Business BoxLttd are here to help customers who need an Extension Builder in East Dulwich. We offer a competitive rate to complete all your ...
From £2,400
Experienced extension builder ready to quote for your work. P R CONSTRUCTION is the best extension builder in East Dulwich. No obligation free quot...
From £2,704
Business Email:info@ Glazing & Boarding With local glaziers available 24 hours a day, 7 days a week we...
From £2,224
James Hall Property Solutions Ltd is a trusted extension builder serving customers in East Dulwich and the surrounding area. Contact us to today to...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in East Dulwich it ranges from £2,080 (FRIERN BUILDING LTD based in SE22) to £2,704 (Babar Jeweler Shop based in SE21).
Comparing extension builders estimates for fitting an RSJ gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
Get rates and quotes to install an RSJ in East Dulwich by posting a job with HaMuch and we will send it to extension builders in East Dulwich.
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 - £17,641

Two storey extension - £88,211

Build a timber frame extension - £26,141

Build a swimming pool - £81,141

Single storey extension - £57,816

Side return extension - £43,084

Install an RSJ - £2,341

Outbuilding - £10,141

Build a Mansard loft conversion - £52,141

Loft conversion - £35,070

Build a kitchen extension - £42,141

Hip to gable loft conversion - £42,141

Granny annexe - £87,141

Garden office - £10,141

Convert a Garage - £16,141

Garage - £18,641

Build a flat roof extension - £22,141

Build a dormer loft conversion - £42,141

Concrete foundations - £6,391

Convert a bungalow loft - £29,141

Convert a basement - £39,084