Relax... you have found a reliable extension builder in Fairfield. A.B Building Services Ltd is a friendly and reliable company based in Fairfield ...
Robuild - Waterwise is an established extension buildering business in Fairfield. We come highly recommended and provide competitive quotes for you...
Need an Extension Builder in Fairfield? PK.Builders has been helping local clients (20 mile radius) with their extension buildering jobs for many y...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Sean Mooney
SJBuild Ltd is an established and experienced local extension builder in Fairfield. Please contact us for a free, no obligation quote and competiti...
Need to find an Extension Builder near you for all your extension buildering work?
S.L.P Property Maintenance provides a local, trusted ext...
Trusted and professional extension builder in Fairfield. Experienced in all extension buildering work and keeping within budget and on quote. DW Br...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Danny Anderson
Danny Anderson Builder is an established extension buildering business in Fairfield. We come highly recommended and provide competitive quotes for ...
G. Finnigan Builders is an established extension buildering business in Fairfield. We come highly recommended and provide competitive quotes for yo...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Fairfield it ranges from £1,592 (SJBuild Ltd based in CH63) to £2,152 (R J Property Maintenance & Repair based in CH63).
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 Fairfield by posting a job with HaMuch and we will send it to extension builders in Fairfield.
"RSJ installation" - LIVERPOOL, job posted 04/09/25
"Install an RSJ" - L36, job posted 01/01/70
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Liverpool | £31 | £222 |
| Install An RSJ near Bootle | £32 | £224 |
| Install An RSJ near Wallasey | £32 | £224 |
| Install An RSJ near Birkenhead | £31 | £219 |
| Install An RSJ near Kirkby | £31 | £224 |
| Install An RSJ near Knowsley | £31 | £222 |
| Install An RSJ near Huyton with Roby | £31 | £225 |
| Install An RSJ near Prescot | £31 | £223 |
| Install An RSJ near Bebington | £31 | £222 |
| Install An RSJ near Crosby | £33 | £223 |
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 - £17,265

Two storey extension - £87,647

Build a timber frame extension - £25,765

Build a swimming pool - £80,765

Single storey extension - £50,296

Side return extension - £38,854

Install an RSJ - £1,965

Outbuilding - £9,765

Build a Mansard loft conversion - £51,765

Loft conversion - £31,545

Build a kitchen extension - £41,765

Hip to gable loft conversion - £41,765

Granny annexe - £86,765

Garden office - £9,765

Convert a Garage - £15,765

Garage - £18,265

Build a flat roof extension - £21,765

Build a dormer loft conversion - £41,765

Concrete foundations - £6,015

Convert a bungalow loft - £28,765

Convert a basement - £34,854