From £2,088
Newquay, TR7
Elements Build SW Ltd is an established and experienced local extension builder in Newquay. Please contact us for a free, no obligation quote and c...
From £2,088
Newquay, TR7
HANDLEY BUILDERS is an established and experienced local extension builder in Newquay. Please contact us for a free, no obligation quote and compet...
From £1,904
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £1,904
From start to finish, your project will be undertaken by one of the family, providing the utmost care and quality of workmanship. We’ll work with...
From £1,872
A Collins Building Contractor is a trusted extension builder serving customers in Newquay and the surrounding area. Contact us to today to get a co...
From £1,832
Relax... you have found a reliable extension builder in Newquay. KC DESIGN AND BUILD is a friendly and reliable company based in Newquay who consid...
From £1,744
Experienced extension builder ready to quote for your work. KEAST CONSTRUCTION LTD is the best extension builder in Newquay. No obligation free quo...
From £1,832
J C MITCHELL BUILDERS LTD is a trusted extension builder serving customers in Newquay and the surrounding area. Contact us to today to get a compet...
From £2,016
Rock Construction is a trusted extension builder serving customers in Newquay and the surrounding area. Contact us to today to get a competitive qu...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Newquay it ranges from £1,744 (KEAST CONSTRUCTION LTD based in TR1) to £2,144 (MYSA based in TR7).
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 Newquay by posting a job with HaMuch and we will send it to extension builders in Newquay.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Newquay | £32 | £230 |
| Install An RSJ near Truro | £31 | £206 |
| Install An RSJ near St Austell | £38 | £245 |
| Install An RSJ near Camborne | £28 | £196 |
| Install An RSJ near Falmouth | £33 | £220 |
| 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 - £17,242

Two storey extension - £87,614

Build a timber frame extension - £25,742

Build a swimming pool - £80,742

Single storey extension - £49,848

Side return extension - £38,602

Install an RSJ - £1,942

Outbuilding - £9,742

Build a Mansard loft conversion - £51,742

Loft conversion - £31,335

Build a kitchen extension - £41,742

Hip to gable loft conversion - £41,742

Granny annexe - £86,742

Garden office - £9,742

Convert a Garage - £15,742

Garage - £18,242

Build a flat roof extension - £21,742

Build a dormer loft conversion - £41,742

Concrete foundations - £5,992

Convert a bungalow loft - £28,742

Convert a basement - £34,602