From £2,096
Experienced extension builder ready to quote for your work. Park home developments is the best extension builder in PE9. No obligation free quotes ...
From £1,800
Need to find an Extension Builder near you for all your extension buildering work?
QKS Limited provides a local, trusted extension builderi...
From £2,544
LMS Construction are a reputable company of builders, established over 15 years ago. Since then, we have been helping customers throughout the Camb...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in PE9 it ranges from £1,800 (QKS Limited based in PE9) to £2,544 (LMS Construction based in PE8).
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 PE9 by posting a job with HaMuch and we will send it to extension builders in PE9.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Stamford | £35 | £248 |
| Install An RSJ near Peterborough | £40 | £281 |
| Install An RSJ near Corby | £30 | £214 |
| Install An RSJ near Spalding | £32 | £238 |
| Install An RSJ near Melton Mowbray | £31 | £222 |
| Install An RSJ near Grantham | £38 | £228 |
| Install An RSJ near Kettering | £34 | £237 |
| Install An RSJ near Huntingdonshire | £36 | £290 |
| Install An RSJ near Market Harborough | £31 | £217 |
| Install An RSJ near Hamilton | £29 | £213 |
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 - £17,447

Two storey extension - £87,920

Build a timber frame extension - £25,947

Build a swimming pool - £80,947

Single storey extension - £53,933

Side return extension - £40,900

Install an RSJ - £2,147

Outbuilding - £9,947

Build a Mansard loft conversion - £51,947

Loft conversion - £33,250

Build a kitchen extension - £41,947

Hip to gable loft conversion - £41,947

Granny annexe - £86,947

Garden office - £9,947

Convert a Garage - £15,947

Garage - £18,447

Build a flat roof extension - £21,947

Build a dormer loft conversion - £41,947

Concrete foundations - £6,197

Convert a bungalow loft - £28,947

Convert a basement - £36,900