Chris Bond
We are a Small Family run business with over 30 years experience in the building trade, Carpentry is my main trade, with NVQ Level 2.
Rob Butler
Need to find an Extension Builder near you for all your extension buildering work?
Oakstone Developments provides a local, trusted extensio...
Park Building Services Ltd is a trusted extension builder serving customers in PO9 and the surrounding area. Contact us to today to get a competiti...
Tao Peskett
TP Developments are here to help customers who need an Extension Builder in PO9. We offer a competitive rate to complete all your extension builder...
Relax... you have found a reliable extension builder in PO9. SLG Mills Building Services is a friendly and reliable company based in PO9 who consid...
Experienced extension builder ready to quote for your work. HOLLYBANK BUILDING is the best extension builder in PO9. No obligation free quotes and ...
Hyden's approach is simple, use a structured repeatable approach to building delivery, using the best tradesmen in the business. The outcome is a b...
Maw Carpentry Services are here to help customers who need an Extension Builder in PO9. We offer a competitive rate to complete all your extension ...
From £3,704
Scott Jones
Need to find an Extension Builder near you for all your extension buildering work?
KC Fencing Ltd provides a local, trusted extension buil...
From £2,168
Brad Willis
Solent Home Improvements are here to help customers who need an Extension Builder in PO9. We offer a competitive rate to complete all your extensio...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in PO9 it ranges from £1,952 (Park Building Services Ltd based in PO9) to £3,704 (KC Fencing Ltd based in po9).
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 PO9 by posting a job with HaMuch and we will send it to extension builders in PO9.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Havant | £35 | £249 |
| Install An RSJ near Havant & Waterloo | £35 | £248 |
| Install An RSJ near Waterlooville | £36 | £250 |
| Install An RSJ near Horndean | £36 | £254 |
| Install An RSJ near Portsmouth | £36 | £250 |
| Install An RSJ near Gosport | £35 | £246 |
| Install An RSJ near Fareham | £35 | £250 |
| Install An RSJ near Chichester | £34 | £242 |
| Install An RSJ near Lee-on-the-Solent | £35 | £249 |
| Install An RSJ near Ryde | £34 | £255 |
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 - £17,739

Two storey extension - £88,359

Build a timber frame extension - £26,239

Build a swimming pool - £81,239

Single storey extension - £59,784

Side return extension - £44,191

Install an RSJ - £2,439

Outbuilding - £10,239

Build a Mansard loft conversion - £52,239

Loft conversion - £35,993

Build a kitchen extension - £42,239

Hip to gable loft conversion - £42,239

Granny annexe - £87,239

Garden office - £10,239

Convert a Garage - £16,239

Garage - £18,739

Build a flat roof extension - £22,239

Build a dormer loft conversion - £42,239

Concrete foundations - £6,489

Convert a bungalow loft - £29,239

Convert a basement - £40,191