From £1,816
Need an Extension Builder in CA11? NEWBY BUILDING & CONSTRUCTION has been helping local clients (20 mile radius) with their extension buildering jo...
From £1,440
Relax... you have found a reliable extension builder in CA11. ASKEW CONSTRUCTION is a friendly and reliable company based in CA11 who consider no j...
From £1,592
Ian Groves is an established extension buildering business in CA11. We come highly recommended and provide competitive quotes for your work.
From £1,856
M c trading is an established extension buildering business in CA11. We come highly recommended and provide competitive quotes for your work.
From £2,440
Cmr Developments is an established and experienced local extension builder in CA11. Please contact us for a free, no obligation quote and competit...
From £1,720
Relax... you have found a reliable extension builder in CA11. M & K BUILDERS KESWICK LIMITED is a friendly and reliable company based in CA11 who c...
From £1,752
maizxdesign is an established and experienced local extension builder in CA11. Please contact us for a free, no obligation quote and competitive ra...
From £1,504
Need to find an Extension Builder near you for all your extension buildering work?
BUILDING TEC LIMITED provides a local, trusted extensio...
From £1,840
My DC Handyman is Washington DC's best handyman service. We offer repairs and renovations for residential and commercial properties around the DMV ...
From £1,560
Experienced extension builder ready to quote for your work. PAUL LITTLE BUILDING MAINT is the best extension builder in CA11. No obligation free qu...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in CA11 it ranges from £1,440 (ASKEW CONSTRUCTION based in CA4) to £2,440 (Cmr Developments based in CA2).
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 CA11 by posting a job with HaMuch and we will send it to extension builders in CA11.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Carlisle | £24 | £204 |
| Install An RSJ near Kendal | £28 | £236 |
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 - £17,052

Two storey extension - £87,328

Build a timber frame extension - £25,552

Build a swimming pool - £80,552

Single storey extension - £46,040

Side return extension - £36,460

Install an RSJ - £1,752

Outbuilding - £9,552

Build a Mansard loft conversion - £51,552

Loft conversion - £29,550

Build a kitchen extension - £41,552

Hip to gable loft conversion - £41,552

Granny annexe - £86,552

Garden office - £9,552

Convert a Garage - £15,552

Garage - £18,052

Build a flat roof extension - £21,552

Build a dormer loft conversion - £41,552

Concrete foundations - £5,802

Convert a bungalow loft - £28,552

Convert a basement - £32,460