From £2,520
Chris Warren Construction Ltd is an established extension buildering business in HP16. We come highly recommended and provide competitive quotes fo...
From £2,656
AQUITAINE(BUILDING SERVICES)LT is an established and experienced local extension builder in HP16. Please contact us for a free, no obligation quote...
From £2,552
CONCEPT BUILD are here to help customers who need an Extension Builder in HP16. We offer a competitive rate to complete all your extension builderi...
From £2,568
Steve Knight Construction is a High Wycombe based Building Company with 38 years experience in all aspects of the Construction Industry. We are abl...
From £2,328
Trusted and professional extension builder in HP16. Experienced in all extension buildering work and keeping within budget and on quote. Steve Knig...
From £2,592
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,272
As a full-service provider, we are dedicated to delivering an outstanding fit out experience for all of our customers. With our innovative designs,...
From £2,160
N J Decorating is an established extension buildering business in HP16. We come highly recommended and provide competitive quotes for your work.
From £2,472
Trusted and professional extension builder in HP16. Experienced in all extension buildering work and keeping within budget and on quote. G T Builde...
From £3,648
Need an Extension Builder in HP16? Bantry Construction Limited has been helping local clients (20 mile radius) with their extension buildering jobs...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in HP16 it ranges from £2,160 (N J Decorating based in HP15) to £3,648 (Bantry Construction Limited based in HP10).
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 HP16 by posting a job with HaMuch and we will send it to extension builders in HP16.
"RSJ installation" - GREAT MISSENDEN, job posted 09/06/24
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Hazlemere | £40 | £272 |
| Install An RSJ near Chesham | £42 | £277 |
| Install An RSJ near Wycombe | £39 | £271 |
| Install An RSJ near High Wycombe | £39 | £272 |
| Install An RSJ near Berkhamsted | £41 | £263 |
| Install An RSJ near Aylesbury | £42 | £270 |
| Install An RSJ near Dacorum | £42 | £269 |
| Install An RSJ near Gerrards Cross | £43 | £282 |
| Install An RSJ near Hemel Hempstead | £42 | £270 |
| Install An RSJ near Rickmansworth | £42 | £278 |
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 - £17,877

Two storey extension - £88,565

Build a timber frame extension - £26,377

Build a swimming pool - £81,377

Single storey extension - £62,536

Side return extension - £45,739

Install an RSJ - £2,577

Outbuilding - £10,377

Build a Mansard loft conversion - £52,377

Loft conversion - £37,283

Build a kitchen extension - £42,377

Hip to gable loft conversion - £42,377

Granny annexe - £87,377

Garden office - £10,377

Convert a Garage - £16,377

Garage - £18,877

Build a flat roof extension - £22,377

Build a dormer loft conversion - £42,377

Concrete foundations - £6,627

Convert a bungalow loft - £29,377

Convert a basement - £41,739