From £2,120
Trusted and professional extension builder in PE29. Experienced in all extension buildering work and keeping within budget and on quote. RBAM Const...
From £2,280
Trusted and professional extension builder in PE29. Experienced in all extension buildering work and keeping within budget and on quote. Moores Roo...
From £2,088
Your Local builders in Peterborough
GMF Builders is owned and managed by Graham Fuller who has approximately 23 years experience in the ...
From £2,448
RS Plumbing and Heating is a trusted extension builder serving customers in PE29 and the surrounding area. Contact us to today to get a competitive...
From £2,648
Relax... you have found a reliable extension builder in PE29. Bench Mark Construction is a friendly and reliable company based in PE29 who consider...
From £3,008
Need to find an Extension Builder near you for all your extension buildering work?
A M Interiors provides a local, trusted extension builde...
From £2,600
Member since January 2026
Welcome to Price & Sons! We are a building company based in Peterborough. If you are interested in a quote please get in touch with us!
From £2,360
Silverwood Construction (Cambridge) Ltd are here to help customers who need an Extension Builder in PE29. We offer a competitive rate to complete a...
From £2,352
Relax... you have found a reliable extension builder in PE29. CROWNBUILD is a friendly and reliable company based in PE29 who consider no job as to...
From £2,472
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 PE29 it ranges from £2,088 (G M F GENERAL BUILDERS based in PE6) to £3,008 (A M Interiors based in MK42).
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 PE29 by posting a job with HaMuch and we will send it to extension builders in PE29.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Huntingdon | £38 | £284 |
| Install An RSJ near Huntingdonshire | £36 | £290 |
| Install An RSJ near St Neots | £51 | £318 |
| Install An RSJ near Cambridge | £38 | £271 |
| Install An RSJ near South Cambridgeshire | £43 | £305 |
| Install An RSJ near Peterborough | £40 | £281 |
| Install An RSJ near Biggleswade | £41 | £268 |
| Install An RSJ near Rushden | £34 | £231 |
| Install An RSJ near South Bedfordshire | £45 | £278 |
| Install An RSJ near Bedford | £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 - £17,738

Two storey extension - £88,356

Build a timber frame extension - £26,238

Build a swimming pool - £81,238

Single storey extension - £59,752

Side return extension - £44,173

Install an RSJ - £2,438

Outbuilding - £10,238

Build a Mansard loft conversion - £52,238

Loft conversion - £35,978

Build a kitchen extension - £42,238

Hip to gable loft conversion - £42,238

Granny annexe - £87,238

Garden office - £10,238

Convert a Garage - £16,238

Garage - £18,738

Build a flat roof extension - £22,238

Build a dormer loft conversion - £42,238

Concrete foundations - £6,488

Convert a bungalow loft - £29,238

Convert a basement - £40,173