From £2,168
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,968
Experienced extension builder ready to quote for your work. Urban Design&Construction is the best extension builder in LU7. No obligation free quot...
From £2,368
Experienced extension builder ready to quote for your work. COMPLETE CONSTRUCTION is the best extension builder in LU7. No obligation free quotes a...
From £2,360
We are a small friendly company who offer a wide range of electrical services to all domestic, commercial and industrial clients.We carry o...
From £2,680
RMC BUILDERS is an established extension buildering business in LU7. We come highly recommended and provide competitive quotes for your work.
From £2,376
Need an Extension Builder in LU7? ADL Build Ltd has been helping local clients (20 mile radius) with their extension buildering jobs for many years...
From £2,128
Trusted and professional extension builder in LU7. Experienced in all extension buildering work and keeping within budget and on quote. Flitton Bro...
From £2,552
Trusted and professional extension builder in LU7. Experienced in all extension buildering work and keeping within budget and on quote. SELFBUILD S...
From £2,472
CURRYHILLS CONSTRUCTION LTD are here to help customers who need an Extension Builder in LU7. We offer a competitive rate to complete all your exten...
From £2,288
, LU6
T Cobb Plastering is an established and experienced local extension builder in LU7. Please contact us for a free, no obligation quote and competiti...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in LU7 it ranges from £2,128 (Flitton Bros Property Ltd based in LU6) to £2,968 (Urban Design&Construction based in LU7).
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 LU7 by posting a job with HaMuch and we will send it to extension builders in LU7.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Leighton Buzzard | £33 | £235 |
| Install An RSJ near Dunstable | £36 | £235 |
| Install An RSJ near Bletchley | £34 | £227 |
| Install An RSJ near Aylesbury | £36 | £236 |
| Install An RSJ near Milton Keynes | £33 | £226 |
| Install An RSJ near Luton | £37 | £240 |
| Install An RSJ near Aylesbury Vale | £34 | £230 |
| Install An RSJ near Mid Bedfordshire | £34 | £225 |
| Install An RSJ near Berkhamsted | £35 | £227 |
| Install An RSJ near Ampthill | £31 | £214 |
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 - £17,736

Two storey extension - £88,354

Build a timber frame extension - £26,236

Build a swimming pool - £81,236

Single storey extension - £59,720

Side return extension - £44,155

Install an RSJ - £2,436

Outbuilding - £10,236

Build a Mansard loft conversion - £52,236

Loft conversion - £35,963

Build a kitchen extension - £42,236

Hip to gable loft conversion - £42,236

Granny annexe - £87,236

Garden office - £10,236

Convert a Garage - £16,236

Garage - £18,736

Build a flat roof extension - £22,236

Build a dormer loft conversion - £42,236

Concrete foundations - £6,486

Convert a bungalow loft - £29,236

Convert a basement - £40,155