From £1,760
TR1 Construction Ltd is a one-stop solution for all your extension buildering needs. Establish over 10 years ago and covering 20 miles around TR2 w...
From £2,016
Rock Construction is a trusted extension builder serving customers in TR2 and the surrounding area. Contact us to today to get a competitive quote ...
From £2,008
Need to find an Extension Builder near you for all your extension buildering work?
Pendragon Builders Ltd provides a local, trusted extensi...
From £2,160
Pendragon Builders is a Cornwall-based business with over 40 years of experience specializing in end-to-end building solutions. We specialise in e...
From £1,744
Experienced extension builder ready to quote for your work. KEAST CONSTRUCTION LTD is the best extension builder in TR2. No obligation free quotes ...
From £1,872
A Collins Building Contractor is a trusted extension builder serving customers in TR2 and the surrounding area. Contact us to today to get a compet...
From £1,832
J C MITCHELL BUILDERS LTD is a trusted extension builder serving customers in TR2 and the surrounding area. Contact us to today to get a competitiv...
From £1,832
Relax... you have found a reliable extension builder in TR2. KC DESIGN AND BUILD is a friendly and reliable company based in TR2 who consider no jo...
From £2,024
Relax... you have found a reliable extension builder in TR2. BUILDMARK BUILDERS is a friendly and reliable company based in TR2 who consider no job...
From £2,264
Probuild was set up as a platform to service clients with High End affordable quality Construction & project Management with solid advice & accurat...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in TR2 it ranges from £1,744 (KEAST CONSTRUCTION LTD based in TR1) to £2,264 (Probuild(cornwall) ltd based in PL25).
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 TR2 by posting a job with HaMuch and we will send it to extension builders in TR2.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Truro | £31 | £206 |
| Install An RSJ near Falmouth | £33 | £220 |
| Install An RSJ near St Austell | £38 | £245 |
| Install An RSJ near Newquay | £32 | £230 |
| Install An RSJ near Camborne | £28 | £196 |
| Install An RSJ near St Ives, Cornwall | £27 | £188 |
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 - £17,251

Two storey extension - £87,627

Build a timber frame extension - £25,751

Build a swimming pool - £80,751

Single storey extension - £50,024

Side return extension - £38,701

Install an RSJ - £1,951

Outbuilding - £9,751

Build a Mansard loft conversion - £51,751

Loft conversion - £31,418

Build a kitchen extension - £41,751

Hip to gable loft conversion - £41,751

Granny annexe - £86,751

Garden office - £9,751

Convert a Garage - £15,751

Garage - £18,251

Build a flat roof extension - £21,751

Build a dormer loft conversion - £41,751

Concrete foundations - £6,001

Convert a bungalow loft - £28,751

Convert a basement - £34,701