From £2,408
Surrey, KT24
Relax... you have found a reliable extension builder in KT24. Avbase Building Services Ltd is a friendly and reliable company based in KT24 who con...
From £2,568
Trusted and professional extension builder in KT24. Experienced in all extension buildering work and keeping within budget and on quote. St Peter T...
From £2,408
Surrey, KT24
Ridgeback Projects Ltd are here to help customers who need an Extension Builder in KT24. We offer a competitive rate to complete all your extension...
From £2,472
Embarking on a new-build, extension or refurbishment can be a daunting prospect for many clients, our tailored service focusses on delivery, ensuri...
From £2,552
East Horsley, KT24
Trusted and professional extension builder in KT24. Experienced in all extension buildering work and keeping within budget and on quote. D HANSFORD...
From £2,344
Experienced extension builder ready to quote for your work. Charybdis Developments Ltd is the best extension builder in KT24. No obligation free qu...
From £2,536
Hallmark Construction and Development Ltd are here to help customers who need an Extension Builder in KT24. We offer a competitive rate to complete...
From £2,472
Need to find an Extension Builder near you for all your extension buildering work?
Living Oak provides a local, trusted extension builderin...
From £2,600
Please visit our web site at for full detailed photos of previous projects and clients testimonials.
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From £2,432
Experienced extension builder ready to quote for your work. Arrus Knoble Ltd is the best extension builder in KT24. No obligation free quotes and m...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in KT24 it ranges from £2,344 (Charybdis Developments Ltd based in KT11) to £2,600 (TH Jensen based in KT22).
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 KT24 by posting a job with HaMuch and we will send it to extension builders in KT24.
| Borough in London |
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| Install An RSJ in East Horsley |
| Install An RSJ in The Bookhams |
| Install An RSJ in Ripley |
| Install An RSJ in Cobham |
| Install An RSJ in Oxshott |
| Install An RSJ in Dorking |
| Install An RSJ in Burpham |
| Install An RSJ in Byfleet |
| Install An RSJ in Albury |
| Install An RSJ in Woking |
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 - £17,779

Two storey extension - £88,419

Build a timber frame extension - £26,279

Build a swimming pool - £81,279

Single storey extension - £60,584

Side return extension - £44,641

Install an RSJ - £2,479

Outbuilding - £10,279

Build a Mansard loft conversion - £52,279

Loft conversion - £36,368

Build a kitchen extension - £42,279

Hip to gable loft conversion - £42,279

Granny annexe - £87,279

Garden office - £10,279

Convert a Garage - £16,279

Garage - £18,779

Build a flat roof extension - £22,279

Build a dormer loft conversion - £42,279

Concrete foundations - £6,529

Convert a bungalow loft - £29,279

Convert a basement - £40,641