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Select your affordable KT14 extension builder
Russell Worcester
Byfleet, KT14
R & R Roofing Guildford are here to help customers who need an Extension Builder in KT14. We offer a competitive rate to complete all your extensio...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,496
Byfleet, KT14
CRESSWELL DESIGN & BUILD are here to help customers who need an Extension Builder in KT14. We offer a competitive rate to complete all your extensi...
From £2,728
As a successful Surrey Property building Company, we pride ourselves not only on what we produce for our clients, but also the manner that we appro...
From £2,608
Byfleet, KT14
Relax... you have found a reliable extension builder in KT14. INTEGRA BUILDERS LTD is a friendly and reliable company based in KT14 who consider no...
From £2,672
Form Projects is an established and experienced local extension builder in KT14. Please contact us for a free, no obligation quote and competitive ...
From £2,616
Need to find an Extension Builder near you for all your extension buildering work?
Tolwey provides a local, trusted extension buildering se...
From £2,560
Refined Space is a trusted extension builder serving customers in KT14 and the surrounding area. Contact us to today to get a competitive quote for...
From £2,456
We’re a design & build company based in Surrey that helps people transform their living environments with user-centred design and expert craftsma...
From £2,192
Trusted and professional extension builder in KT14. Experienced in all extension buildering work and keeping within budget and on quote. Tarahomes ...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in KT14 it ranges from £2,176 (R & R Roofing Guildford based in KT14) to £2,728 (JDM (D&B) Ltd based in Kt14).
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 KT14 by posting a job with HaMuch and we will send it to extension builders in KT14.
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 - £17,794

Two storey extension - £88,442

Build a timber frame extension - £26,294

Build a swimming pool - £81,294

Single storey extension - £60,888

Side return extension - £44,812

Install an RSJ - £2,494

Outbuilding - £10,294

Build a Mansard loft conversion - £52,294

Loft conversion - £36,510

Build a kitchen extension - £42,294

Hip to gable loft conversion - £42,294

Granny annexe - £87,294

Garden office - £10,294

Convert a Garage - £16,294

Garage - £18,794

Build a flat roof extension - £22,294

Build a dormer loft conversion - £42,294

Concrete foundations - £6,544

Convert a bungalow loft - £29,294

Convert a basement - £40,812