Kettering Mobile Sandblasting are here to help customers who need an Extension Builder in Corby. We offer a competitive rate to complete all your e...
I Plowright Brickwork is an established extension buildering business in Corby. We come highly recommended and provide competitive quotes for your ...
Corby, NN17
B GS GENERAL BUILDERS are here to help customers who need an Extension Builder in Corby. We offer a competitive rate to complete all your extension...
Relax... you have found a reliable extension builder in Corby. Jogga Construction is a friendly and reliable company based in Corby who consider no...
Experienced extension builder ready to quote for your work. GARY TAYLOR BUILDERS LTD is the best extension builder in Corby. No obligation free quo...
From £1,928
Ken Burton
Experienced house builder. Eco structures from Denmark as well as conventional build. Extensions. Bathrooms. Kitchens and support steels when requi...
From £1,672
Ascot Property Solutions Limited is an established and experienced local extension builder in Corby. Please contact us for a free, no obligation qu...
From £1,776
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Corby it ranges from £1,672 (Ascot Property Solutions Limited based in NN17) to £2,256 (Kettering Mobile Sandblasting based in NN16).
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 Corby by posting a job with HaMuch and we will send it to extension builders in Corby.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Corby | £30 | £214 |
| Install An RSJ near Kettering | £34 | £237 |
| Install An RSJ near Market Harborough | £31 | £217 |
| Install An RSJ near Wellingborough | £39 | £251 |
| Install An RSJ near Stamford | £35 | £248 |
| Install An RSJ near Rushden | £34 | £231 |
| Install An RSJ near Wigston | £28 | £209 |
| Install An RSJ near Hamilton | £29 | £213 |
| Install An RSJ near Peterborough | £40 | £281 |
| Install An RSJ near Oadby | £28 | £207 |
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 - £17,261

Two storey extension - £87,642

Build a timber frame extension - £25,761

Build a swimming pool - £80,761

Single storey extension - £50,220

Side return extension - £38,811

Install an RSJ - £1,961

Outbuilding - £9,761

Build a Mansard loft conversion - £51,761

Loft conversion - £31,509

Build a kitchen extension - £41,761

Hip to gable loft conversion - £41,761

Granny annexe - £86,761

Garden office - £9,761

Convert a Garage - £15,761

Garage - £18,261

Build a flat roof extension - £21,761

Build a dormer loft conversion - £41,761

Concrete foundations - £6,011

Convert a bungalow loft - £28,761

Convert a basement - £34,811