From £1,952
4Walls Project Management Ltd is an established and experienced local extension builder in Andover. Please contact us for a free, no obligation quo...
From £2,184
Andover, SP10
Relax... you have found a reliable extension builder in Andover. Bob Shearer Property Maintenance, Building & Roofing is a friendly and reliable co...
From £2,096
Andover, SP10
Relax... you have found a reliable extension builder in Andover. Groundcraft Ltd is a friendly and reliable company based in Andover who consider n...
From £2,304
Relax... you have found a reliable extension builder in Andover. Eds Builders is a friendly and reliable company based in Andover who consider no j...
From £2,272
DMT Construction t/a are here to help customers who need an Extension Builder in Andover. We offer a competitive rate to complete all your extensio...
From £2,320
Our building services company Shadow UK Construction Ltd was established in March 2022, but have been providing professional, trustworthy building ...
From £2,368
Trusted and professional extension builder in Andover. Experienced in all extension buildering work and keeping within budget and on quote. Sarsen ...
From £2,200
Connie & Bella Industry Ltd is a trusted extension builder serving customers in Andover and the surrounding area. Contact us to today to get a comp...
From £2,240
Need an Extension Builder in Andover? BARTITIONS DESIGN & BUILD LTD has been helping local clients (20 mile radius) with their extension builderin...
From £2,304
JJ Acquisitions ltd is a trusted extension builder serving customers in Andover and the surrounding area. Contact us to today to get a competitive ...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Andover it ranges from £1,952 (4Walls Project Management Ltd based in SP10) to £2,368 (Sarsen Energy Ltd based in SN8).
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 Andover by posting a job with HaMuch and we will send it to extension builders in Andover.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Andover | £40 | £248 |
| Install An RSJ near Test Valley | £37 | £261 |
| Install An RSJ near Winchester | £37 | £266 |
| Install An RSJ near Basingstoke & Deane | £39 | £273 |
| Install An RSJ near Newbury | £37 | £262 |
| Install An RSJ near Romsey | £32 | £230 |
| Install An RSJ near Chandler's Ford | £34 | £245 |
| Install An RSJ near Thatcham | £38 | £266 |
| Install An RSJ near Salisbury | £35 | £247 |
| Install An RSJ near Basingstoke | £39 | £274 |
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 - £17,524

Two storey extension - £88,036

Build a timber frame extension - £26,024

Build a swimming pool - £81,024

Single storey extension - £55,480

Side return extension - £41,770

Install an RSJ - £2,224

Outbuilding - £10,024

Build a Mansard loft conversion - £52,024

Loft conversion - £33,975

Build a kitchen extension - £42,024

Hip to gable loft conversion - £42,024

Granny annexe - £87,024

Garden office - £10,024

Convert a Garage - £16,024

Garage - £18,524

Build a flat roof extension - £22,024

Build a dormer loft conversion - £42,024

Concrete foundations - £6,274

Convert a bungalow loft - £29,024

Convert a basement - £37,770