Steve Bannister
We are a small family run business with over 20 years experience in brickwork, bathroom/kitchen fitting, roofing, landscaping, fencing, tiling and ...
O NEILL CONSTRUCTION LTD is an established extension buildering business in PO16. We come highly recommended and provide competitive quotes for you...
Peter Fenn Property is a trusted extension builder serving customers in PO16 and the surrounding area. Contact us to today to get a competitive quo...
M.K Warner Building Services is an established extension buildering business in PO16. We come highly recommended and provide competitive quotes for...
Steve Harris
Hi my name is Steve harris of hb builders we are based in portchester and have over 40 years of experience in the building trade we would be mor...
Nick Smith
NICK SMITH BUILDERS is an established extension buildering business in PO16. We come highly recommended and provide competitive quotes for your wor...
Thermic Homes is an energy-saving home improvement company operating out of the south coast of England. Our mission is to create warmer homes for t...
Relax... you have found a reliable extension builder in PO16. MA Builders is a friendly and reliable company based in PO16 who consider no job as t...
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 PO16 it ranges from £1,936 (H B Builders based in PO16) to £2,504 (Thermic Homes based in PO16).
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 PO16 by posting a job with HaMuch and we will send it to extension builders in PO16.
"RSJ installation" - PO2, job posted 01/01/70
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Fareham | £35 | £250 |
| Install An RSJ near Gosport | £35 | £246 |
| Install An RSJ near Portsmouth | £36 | £250 |
| Install An RSJ near Lee-on-the-Solent | £35 | £249 |
| Install An RSJ near Locks Heath | £33 | £240 |
| Install An RSJ near Waterlooville | £36 | £250 |
| Install An RSJ near Horndean | £36 | £254 |
| Install An RSJ near Havant & Waterloo | £35 | £248 |
| Install An RSJ near Havant | £35 | £249 |
| Install An RSJ near Hedge End | £34 | £244 |
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 - £17,449

Two storey extension - £87,923

Build a timber frame extension - £25,949

Build a swimming pool - £80,949

Single storey extension - £53,976

Side return extension - £40,924

Install an RSJ - £2,149

Outbuilding - £9,949

Build a Mansard loft conversion - £51,949

Loft conversion - £33,270

Build a kitchen extension - £41,949

Hip to gable loft conversion - £41,949

Granny annexe - £86,949

Garden office - £9,949

Convert a Garage - £15,949

Garage - £18,449

Build a flat roof extension - £21,949

Build a dormer loft conversion - £41,949

Concrete foundations - £6,199

Convert a bungalow loft - £28,949

Convert a basement - £36,924