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J Stevens Roofing & Guttering
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
D B Jones Builder
Trusted and professional extension builder in KT20. Experienced in all extension buildering work and keeping within budget and on quote. D B Jones ...
From £2,424
Cannon Gardens
David Hunt
Kingswood, KT20
Relax... you have found a reliable extension builder in KT20. Cannon Gardens is a friendly and reliable company based in KT20 who consider no job a...
From £2,104
Able Construction T/A
Experienced extension builder ready to quote for your work. Able Construction T/A is the best extension builder in KT20. No obligation free quotes ...
From £2,296
MSI
Tadworth, KT20
Relax... you have found a reliable extension builder in KT20. MSI is a friendly and reliable company based in KT20 who consider no job as too big o...
From £3,080
London Bespoke Build
Need an Extension Builder in KT20? London Bespoke Build has been helping local clients (10 mile radius) with their extension buildering jobs for ma...
From £2,168
D Bateman General Building Services
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,664
PZ Refurbishment Ltd
Pawel Zajac
At PZ Refurbishment we offer all aspects of Building, Roofing, Electrical, Joinery, Plumbing, Heating and more. We can carry out a large variety of...
From £2,552
AG Design And Build Limited
Tadworth, KT20
AG Design And Build Limited is an established extension buildering business in KT20. We come highly recommended and provide competitive quotes for ...
From £2,224
Building and Electricals Ltd
Our family-run building services company Building and Electricals Ltd has over 40 combined years of experience in the industry. We help customers i...
RSJ cost in KT20
How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in KT20 it ranges from £2,104 (Able Construction T/A based in KT20) to £3,080 (London Bespoke Build based in KT20).
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 KT20 by posting a job with HaMuch and we will send it to extension builders in KT20.
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Estimates for common extension builder jobs in KT20;
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 - £17,721
Two storey extension - £88,331
Build a timber frame extension - £26,221
Build a swimming pool - £81,221
Single storey extension - £59,416
Side return extension - £43,984
Install an RSJ - £2,421
Outbuilding - £10,221
Build a Mansard loft conversion - £52,221
Loft conversion - £35,820
Build a kitchen extension - £42,221
Hip to gable loft conversion - £42,221
Granny annexe - £87,221
Garden office - £10,221
Convert a Garage - £16,221
Garage - £18,721
Build a flat roof extension - £22,221
Build a dormer loft conversion - £42,221
Concrete foundations - £6,471
Convert a bungalow loft - £29,221
Convert a basement - £39,984