From £2,032
Witham, CM8
AE Contractors Ltd is an established extension buildering business in Witham. We come highly recommended and provide competitive quotes for your wo...
From £2,120
Relax... you have found a reliable extension builder in Witham. Nigel Gresty Limited is a friendly and reliable company based in Witham who conside...
From £2,472
Our building services company Expertise Property Services Ltd was established over 20 years ago. Since then we have been helping customers in Essex...
From £2,304
Trusted and professional extension builder in Witham. Experienced in all extension buildering work and keeping within budget and on quote. Art Deve...
From £2,056
I am a Carpenter & Joiner with over 13 years experience in all kinds of woodwork & construction, inc. commercial & domestic projects of a wide vari...
From £1,952
A D F CONSTRUCTION is an established extension buildering business in Witham. We come highly recommended and provide competitive quotes for your wo...
From £1,984
Witham, CM8
Trusted and professional extension builder in Witham. Experienced in all extension buildering work and keeping within budget and on quote. SYSTEM M...
From £2,232
Need to find an Extension Builder near you for all your extension buildering work?
DAVID TAYLOR/BUILDING provides a local, trusted extensio...
From £2,296
Need an Extension Builder in Witham? ELM BUILDING SERVICES has been helping local clients (20 mile radius) with their extension buildering jobs for...
From £2,200
D & S Roofing is a trusted extension builder serving customers in Witham and the surrounding area. Contact us to today to get a competitive quote f...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Witham it ranges from £1,952 (A D F CONSTRUCTION based in CM9) to £2,472 (Expertise Property Services Ltd based in CM8).
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 Witham by posting a job with HaMuch and we will send it to extension builders in Witham.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Witham | £36 | £240 |
| Install An RSJ near Maldon | £36 | £244 |
| Install An RSJ near Braintree | £37 | £247 |
| Install An RSJ near Chelmsford | £38 | £258 |
| Install An RSJ near Colchester | £33 | £230 |
| Install An RSJ near Wickford | £39 | £255 |
| Install An RSJ near Billericay | £38 | £248 |
| Install An RSJ near Rayleigh | £39 | £252 |
| Install An RSJ near Thundersley | £38 | £251 |
| Install An RSJ near Basildon | £39 | £251 |
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 - £17,465

Two storey extension - £87,947

Build a timber frame extension - £25,965

Build a swimming pool - £80,965

Single storey extension - £54,296

Side return extension - £41,104

Install an RSJ - £2,165

Outbuilding - £9,965

Build a Mansard loft conversion - £51,965

Loft conversion - £33,420

Build a kitchen extension - £41,965

Hip to gable loft conversion - £41,965

Granny annexe - £86,965

Garden office - £9,965

Convert a Garage - £15,965

Garage - £18,465

Build a flat roof extension - £21,965

Build a dormer loft conversion - £41,965

Concrete foundations - £6,215

Convert a bungalow loft - £28,965

Convert a basement - £37,104