From £2,360
B C Construction is an established and experienced local extension builder in TN8. Please contact us for a free, no obligation quote and competitiv...
From £2,488
Our services include new build construction, extensions, basements, renovations and residential developments. We undertake projects ranging from 10...
From £2,216
Relax... you have found a reliable extension builder in TN8. JESMOR CONSTRUCTION LTD is a friendly and reliable company based in TN8 who consider n...
From £2,520
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £1,928
Apsley Wall Ltd is an established extension buildering business in TN8. We come highly recommended and provide competitive quotes for your work.
From £1,808
We are a building and landscaping business, based in Oxted, Surrey. We cover all surrounding areas, such as Limpsfield, Woldingham, Warlingham, Wes...
From £2,568
Relax... you have found a reliable extension builder in TN8. WMT Building Services Ltd is a friendly and reliable company based in TN8 who consider...
From £2,752
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,464
Our building services company Accuracy Developments Ltd has over 25 years’ experience. We have been helping customers in Westerham and the surrou...
From £2,088
Relax... you have found a reliable extension builder in TN8. A C Ribbens Building & Decorating is a friendly and reliable company based in TN8 who ...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in TN8 it ranges from £1,808 (CAMERON BUILDING AND LANDSCAPING SERVICES LTD based in rh8) to £2,752 (Asprey Homes Ltd based in TN16).
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 TN8 by posting a job with HaMuch and we will send it to extension builders in TN8.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near East Grinstead | £37 | £259 |
| Install An RSJ near Sevenoaks | £38 | £234 |
| Install An RSJ near Tonbridge | £38 | £254 |
| Install An RSJ near Tunbridge Wells | £37 | £258 |
| Install An RSJ near Caterham | £43 | £272 |
| Install An RSJ near Horley | £38 | £258 |
| Install An RSJ near Crowborough | £36 | £258 |
| Install An RSJ near Redhill | £41 | £269 |
| Install An RSJ near Crawley | £38 | £255 |
| Install An RSJ near Reigate | £40 | £270 |
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 - £17,619

Two storey extension - £88,179

Build a timber frame extension - £26,119

Build a swimming pool - £81,119

Single storey extension - £57,384

Side return extension - £42,841

Install an RSJ - £2,319

Outbuilding - £10,119

Build a Mansard loft conversion - £52,119

Loft conversion - £34,868

Build a kitchen extension - £42,119

Hip to gable loft conversion - £42,119

Granny annexe - £87,119

Garden office - £10,119

Convert a Garage - £16,119

Garage - £18,619

Build a flat roof extension - £22,119

Build a dormer loft conversion - £42,119

Concrete foundations - £6,369

Convert a bungalow loft - £29,119

Convert a basement - £38,841