From £2,112
Formby, L37
Relax... you have found a reliable extension builder in Formby. OLIA CONSTRUCTION LTD is a friendly and reliable company based in Formby who consid...
From £232
Need an Extension Builder in Formby? T&T Building Contractors has been helping local clients (20 mile radius) with their extension buildering jobs ...
From £1,776
BTC Bernstef Ltd is an established extension buildering business in Formby. We come highly recommended and provide competitive quotes for your work...
From £1,872
KOR BUILDING SERVICES is an established and experienced local extension builder in Formby. Please contact us for a free, no obligation quote and co...
From £1,592
Prestige Property Conversions Ltd is an established extension buildering business in Formby. We come highly recommended and provide competitive quo...
From £1,912
PARKFIELD CONSTRUCTION LTD is an established extension buildering business in Formby. We come highly recommended and provide competitive quotes for...
From £2,080
Need to find an Extension Builder near you for all your extension buildering work?
Sbetts Building provides a local, trusted extension buil...
From £1,672
Trusted and professional extension builder in Formby. Experienced in all extension buildering work and keeping within budget and on quote. Jones La...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Formby it ranges from £232 (T&T Building Contractors based in L23) to £2,112 (OLIA CONSTRUCTION LTD based in L37).
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 Formby by posting a job with HaMuch and we will send it to extension builders in Formby.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Formby | £23 | £162 |
| Install An RSJ near Sefton | £34 | £221 |
| Install An RSJ near Crosby | £34 | £223 |
| Install An RSJ near Southport | £27 | £198 |
| Install An RSJ near Maghull | £33 | £219 |
| Install An RSJ near Ormskirk | £29 | £206 |
| Install An RSJ near Bootle | £32 | £223 |
| Install An RSJ near West Lancashire | £28 | £203 |
| Install An RSJ near Kirkby | £31 | £222 |
| Install An RSJ near Wallasey | £33 | £224 |
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 - £16,922

Two storey extension - £87,134

Build a timber frame extension - £25,422

Build a swimming pool - £80,422

Single storey extension - £43,448

Side return extension - £35,002

Install an RSJ - £1,622

Outbuilding - £9,422

Build a Mansard loft conversion - £51,422

Loft conversion - £28,335

Build a kitchen extension - £41,422

Hip to gable loft conversion - £41,422

Granny annexe - £86,422

Garden office - £9,422

Convert a Garage - £15,422

Garage - £17,922

Build a flat roof extension - £21,422

Build a dormer loft conversion - £41,422

Concrete foundations - £5,672

Convert a bungalow loft - £28,422

Convert a basement - £31,002