From £2,480
Member since August 2026
Relax... you have found a reliable extension builder in Chepping Wycombe. ABC Associates STRUCTURES 4 U is a friendly and reliable company based in...
From £2,392
Need an Extension Builder in Chepping Wycombe? VA Structures has been helping local clients (10 mile radius) with their extension buildering jobs f...
From £2,480
Trusted and professional extension builder in Chepping Wycombe. Experienced in all extension buildering work and keeping within budget and on quote...
From £2,512
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,632
DP Services is a fully insured friendly local company which has been trading since 2002 and delivers high quality building work in domestic extensi...
From £2,504
Hi we have 15 years of experience in building and construction industry our specialization is bathrooms and renovations please have a look at the w...
From £2,624
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,120
NISUP BUILDING SERVICES Company specializes in the domestic and commercial building industry :1. Refurbishm...
From £2,632
Krystian Wojasiewicz is a trusted extension builder serving customers in Chepping Wycombe and the surrounding area. Contact us to today to get a co...
From £2,632
Platinum Electrics is a Branch off Platinum Premier Projects who deal in all types of construction projects. Platinum Electrics are based in London...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Chepping Wycombe it ranges from £2,120 (Nisup Building Services based in HA8) to £2,632 (DP Services based in RG41).
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 Chepping Wycombe by posting a job with HaMuch and we will send it to extension builders in Chepping Wycombe.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Hazlemere | £40 | £272 |
| Install An RSJ near High Wycombe | £39 | £272 |
| Install An RSJ near Wycombe | £39 | £271 |
| Install An RSJ near Maidenhead | £41 | £273 |
| Install An RSJ near Gerrards Cross | £43 | £282 |
| Install An RSJ near Chesham | £42 | £277 |
| Install An RSJ near Slough | £42 | £272 |
| Install An RSJ near Windsor & Maidenhead | £42 | £272 |
| Install An RSJ near Rickmansworth | £42 | £278 |
| Install An RSJ near Windsor | £41 | £271 |
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 - £17,801

Two storey extension - £88,451

Build a timber frame extension - £26,301

Build a swimming pool - £81,301

Single storey extension - £61,016

Side return extension - £44,884

Install an RSJ - £2,501

Outbuilding - £10,301

Build a Mansard loft conversion - £52,301

Loft conversion - £36,570

Build a kitchen extension - £42,301

Hip to gable loft conversion - £42,301

Granny annexe - £87,301

Garden office - £10,301

Convert a Garage - £16,301

Garage - £18,801

Build a flat roof extension - £22,301

Build a dormer loft conversion - £42,301

Concrete foundations - £6,551

Convert a bungalow loft - £29,301

Convert a basement - £40,884