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 Gerra...
From £1,728
Trusted and professional extension builder in Gerrans. Experienced in all extension buildering work and keeping within budget and on quote. D & S B...
From £1,816
D.P.Hatley Building Services is an established extension buildering business in Gerrans. We come highly recommended and provide competitive quotes ...
From £1,648
SHORE FIX CONSTRUCTION LTD is an established extension buildering business in Gerrans. We come highly recommended and provide competitive quotes fo...
From £2,104
At peninsula refurbishment we provide a service from start to finish with minimal hassle for the customer. The workmanship is always high priority,...
From £1,744
Experienced extension builder ready to quote for your work. KEAST CONSTRUCTION LTD is the best extension builder in Gerrans. No obligation free quo...
From £2,024
Relax... you have found a reliable extension builder in Gerrans. BUILDMARK BUILDERS is a friendly and reliable company based in Gerrans who conside...
From £2,088
Elements Build SW Ltd is an established and experienced local extension builder in Gerrans. Please contact us for a free, no obligation quote and c...
From £2,344
Relax... you have found a reliable extension builder in Gerrans. Daniel Job Building & Roofing Contractor Ltd is a friendly and reliable company ba...
From £1,832
J C MITCHELL BUILDERS LTD is a trusted extension builder serving customers in Gerrans and the surrounding area. Contact us to today to get a compet...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Gerrans it ranges from £1,648 (SHORE FIX CONSTRUCTION LTD based in TR12) to £2,344 (Daniel Job Building & Roofing Contractor Ltd based in PL24).
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 Gerrans by posting a job with HaMuch and we will send it to extension builders in Gerrans.
| 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 - £17,209

Two storey extension - £87,563

Build a timber frame extension - £25,709

Build a swimming pool - £80,709

Single storey extension - £49,176

Side return extension - £38,224

Install an RSJ - £1,909

Outbuilding - £9,709

Build a Mansard loft conversion - £51,709

Loft conversion - £31,020

Build a kitchen extension - £41,709

Hip to gable loft conversion - £41,709

Granny annexe - £86,709

Garden office - £9,709

Convert a Garage - £15,709

Garage - £18,209

Build a flat roof extension - £21,709

Build a dormer loft conversion - £41,709

Concrete foundations - £5,959

Convert a bungalow loft - £28,709

Convert a basement - £34,224