Mark Wadeson
Building extensions and conversions - commercial and domesticstructural repairsgroundworksdrainage workspaving, patios and concreti...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Need to find an Extension Builder near you for all your extension buildering work?
J.V MARSTON BUILDERS provides a local, trusted extension...
Trusted and professional extension builder in Bournemouth. Experienced in all extension buildering work and keeping within budget and on quote. WR ...
Bournemouth, BH11
Trusted and professional extension builder in Bournemouth. Experienced in all extension buildering work and keeping within budget and on quote. Hay...
Bournemouth, BH9
Experienced extension builder ready to quote for your work. C&M Roofing is the best extension builder in Bournemouth. No obligation free quotes and...
Bournemouth, BH8
Sky Builders is a trusted extension builder serving customers in Bournemouth and the surrounding area. Contact us to today to get a competitive quo...
Experienced extension builder ready to quote for your work. JOSCELYNE BUILDERS is the best extension builder in Bournemouth. No obligation free quo...
Richard Thomas
Need an Extension Builder in Bournemouth? RNTP ltd has been helping local clients (20 mile radius) with their extension buildering jobs for many ye...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Bournemouth it ranges from £1,776 (ALWYN DOMINEY based in BH12) to £3,400 (Wade and Son Builders based in bh22).
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 Bournemouth by posting a job with HaMuch and we will send it to extension builders in Bournemouth.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Bournemouth | £38 | £257 |
| Install An RSJ near Poole | £38 | £250 |
| Install An RSJ near Christchurch | £36 | £251 |
| Install An RSJ near New Forest | £32 | £245 |
| Install An RSJ near Totton | £34 | £243 |
| Install An RSJ near Salisbury | £35 | £247 |
| Install An RSJ near Dorchester | £30 | £230 |
| Install An RSJ near Southampton | £34 | £243 |
| Install An RSJ near Romsey | £32 | £230 |
| Install An RSJ near Isle of Wight | £34 | £246 |
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 - £17,734

Two storey extension - £88,350

Build a timber frame extension - £26,234

Build a swimming pool - £81,234

Single storey extension - £59,672

Side return extension - £44,128

Install an RSJ - £2,434

Outbuilding - £10,234

Build a Mansard loft conversion - £52,234

Loft conversion - £35,940

Build a kitchen extension - £42,234

Hip to gable loft conversion - £42,234

Granny annexe - £87,234

Garden office - £10,234

Convert a Garage - £16,234

Garage - £18,734

Build a flat roof extension - £22,234

Build a dormer loft conversion - £42,234

Concrete foundations - £6,484

Convert a bungalow loft - £29,234

Convert a basement - £40,128