Garden and Building Solutions is an established and experienced local extension builder in NN10. Please contact us for a free, no obligation quote ...
From £2,240
Experienced extension builder ready to quote for your work. KMR CONSTRUCTION is the best extension builder in NN10. No obligation free quotes and m...
From £1,896
Experienced extension builder ready to quote for your work. L & D CONSTRUCTION SERVICE is the best extension builder in NN10. No obligation free qu...
From £1,848
Matt Shirley
Need to find an Extension Builder near you for all your extension buildering work?
Shirley Ceramics provides a local, trusted extension bui...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in NN10 it ranges from £1,824 (Garden and Building Solutions based in NN10) to £2,240 (KMR CONSTRUCTION based in NN10).
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 NN10 by posting a job with HaMuch and we will send it to extension builders in NN10.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Rushden | £34 | £231 |
| Install An RSJ near Wellingborough | £39 | £251 |
| Install An RSJ near Kettering | £34 | £237 |
| Install An RSJ near Bedford | £45 | £278 |
| Install An RSJ near South Bedfordshire | £45 | £278 |
| Install An RSJ near Kempston | £44 | £273 |
| Install An RSJ near Northampton | £35 | £239 |
| Install An RSJ near St Neots | £51 | £318 |
| Install An RSJ near Corby | £30 | £214 |
| Install An RSJ near Huntingdonshire | £36 | £290 |
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 - £17,252

Two storey extension - £87,628

Build a timber frame extension - £25,752

Build a swimming pool - £80,752

Single storey extension - £50,040

Side return extension - £38,710

Install an RSJ - £1,952

Outbuilding - £9,752

Build a Mansard loft conversion - £51,752

Loft conversion - £31,425

Build a kitchen extension - £41,752

Hip to gable loft conversion - £41,752

Granny annexe - £86,752

Garden office - £9,752

Convert a Garage - £15,752

Garage - £18,252

Build a flat roof extension - £21,752

Build a dormer loft conversion - £41,752

Concrete foundations - £6,002

Convert a bungalow loft - £28,752

Convert a basement - £34,710