Devscapes is an established extension buildering business in PO11. We come highly recommended and provide competitive quotes for your work.
Experienced extension builder ready to quote for your work. Portsmouth Building Repairs is the best extension builder in PO11. No obligation free q...
Need to find an Extension Builder near you for all your extension buildering work?
R And S Building provides a local, trusted extension bui...
Relax... you have found a reliable extension builder in PO11. ROWLANDS CONSTRUCTION is a friendly and reliable company based in PO11 who consider n...
From £2,200
Experienced extension builder ready to quote for your work. Pompey Homes Ltd is the best extension builder in PO11. No obligation free quotes and m...
From £2,120
Need an Extension Builder in PO11? Aspen Garden Rooms has been helping local clients (20 mile radius) with their extension buildering jobs for many...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in PO11 it ranges from £1,912 (R And S Building based in PO11) to £2,384 (ROWLANDS CONSTRUCTION based in PO11).
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 PO11 by posting a job with HaMuch and we will send it to extension builders in PO11.
"RSJ installation" - PO2, job posted 01/01/70
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Havant & Waterloo | £35 | £248 |
| Install An RSJ near Havant | £35 | £249 |
| Install An RSJ near Portsmouth | £36 | £250 |
| Install An RSJ near Waterlooville | £36 | £250 |
| Install An RSJ near Gosport | £35 | £246 |
| Install An RSJ near Horndean | £36 | £254 |
| Install An RSJ near Chichester | £34 | £242 |
| Install An RSJ near Ryde | £34 | £255 |
| Install An RSJ near Lee-on-the-Solent | £35 | £249 |
| Install An RSJ near Fareham | £35 | £250 |
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 - £17,479

Two storey extension - £87,968

Build a timber frame extension - £25,979

Build a swimming pool - £80,979

Single storey extension - £54,573

Side return extension - £41,260

Install an RSJ - £2,179

Outbuilding - £9,979

Build a Mansard loft conversion - £51,979

Loft conversion - £33,550

Build a kitchen extension - £41,979

Hip to gable loft conversion - £41,979

Granny annexe - £86,979

Garden office - £9,979

Convert a Garage - £15,979

Garage - £18,479

Build a flat roof extension - £21,979

Build a dormer loft conversion - £41,979

Concrete foundations - £6,229

Convert a bungalow loft - £28,979

Convert a basement - £37,260