From £2,256
Kettering Mobile Sandblasting are here to help customers who need an Extension Builder in NN16. We offer a competitive rate to complete all your ex...
From £2,168
Relax... you have found a reliable extension builder in NN16. Jogga Construction is a friendly and reliable company based in NN16 who consider no j...
From £2,072
I Plowright Brickwork is an established extension buildering business in NN16. We come highly recommended and provide competitive quotes for your w...
From £1,960
Experienced extension builder ready to quote for your work. GARY TAYLOR BUILDERS LTD is the best extension builder in NN16. No obligation free quot...
From £1,928
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 NN16. Please contact us for a free, no obligation quo...
From £2,200
Experienced extension builder ready to quote for your work. Home Ryte Construction is the best extension builder in NN16. No obligation free quotes...
From £1,856
B GS GENERAL BUILDERS are here to help customers who need an Extension Builder in NN16. We offer a competitive rate to complete all your extension ...
From £2,376
Surrounding Villages Builders Limited are here to help customers who need an Extension Builder in NN16. We offer a competitive rate to complete all...
From £2,184
Hi im Shane & I am the managing director of sjs multitrade Ltd, I am a landscaper & builder of bespoke gardens and outdoor spaces created to my cus...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in NN16 it ranges from £1,672 (Ascot Property Solutions Limited based in NN17) to £2,376 (Surrounding Villages Builders Limited based in Nn14).
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 NN16 by posting a job with HaMuch and we will send it to extension builders in NN16.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Kettering | £34 | £237 |
| Install An RSJ near Corby | £30 | £214 |
| Install An RSJ near Wellingborough | £39 | £251 |
| Install An RSJ near Market Harborough | £31 | £217 |
| Install An RSJ near Rushden | £34 | £231 |
| Install An RSJ near Northampton | £35 | £239 |
| Install An RSJ near Stamford | £35 | £248 |
| Install An RSJ near Huntingdonshire | £36 | £290 |
| Install An RSJ near Wigston | £28 | £214 |
| Install An RSJ near South Bedfordshire | £45 | £278 |
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 - £17,367

Two storey extension - £87,801

Build a timber frame extension - £25,867

Build a swimming pool - £80,867

Single storey extension - £52,344

Side return extension - £40,006

Install an RSJ - £2,067

Outbuilding - £9,867

Build a Mansard loft conversion - £51,867

Loft conversion - £32,505

Build a kitchen extension - £41,867

Hip to gable loft conversion - £41,867

Granny annexe - £86,867

Garden office - £9,867

Convert a Garage - £15,867

Garage - £18,367

Build a flat roof extension - £21,867

Build a dormer loft conversion - £41,867

Concrete foundations - £6,117

Convert a bungalow loft - £28,867

Convert a basement - £36,006