From £2,088
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,216
GTM Construction (Falkirk) Limited is an established extension buildering business in Grangemouth. We come highly recommended and provide competiti...
From £2,000
Relax... you have found a reliable extension builder in Grangemouth. CAMS Construction is a friendly and reliable company based in Grangemouth who ...
From £2,216
Robert Watt Builders is an established and experienced local extension builder in Grangemouth. Please contact us for a free, no obligation quote an...
From £2,512
Relax... you have found a reliable extension builder in Grangemouth. Good Foundations is a friendly and reliable company based in Grangemouth who c...
From £424
We aim to provide quality workmanship on every job that will exceed your expectations. Our quotes are reasonable and competitive and we guarantee t...
From £2,240
Need an Extension Builder in Grangemouth? DANIEL COX BUILDING SERVICES has been helping local clients (20 mile radius) with their extension builder...
From £2,152
DW Builders is an established and experienced local extension builder in Grangemouth. Please contact us for a free, no obligation quote and competi...
From £2,456
Trusted and professional extension builder in Grangemouth. Experienced in all extension buildering work and keeping within budget and on quote. COM...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Grangemouth it ranges from £424 (M&C JOINERS based in FK5) to £2,512 (Good Foundations based in EH51).
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 Grangemouth by posting a job with HaMuch and we will send it to extension builders in Grangemouth.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Grangemouth | £32 | £214 |
| Install An RSJ near Falkirk | £31 | £208 |
| Install An RSJ near Bo'ness | £33 | £241 |
| Install An RSJ near Alloa | £33 | £229 |
| Install An RSJ near Bathgate | £28 | £214 |
| Install An RSJ near West Lothian | £33 | £242 |
| Install An RSJ near Dunfermline | £46 | £285 |
| Install An RSJ near Broxburn | £34 | £251 |
| Install An RSJ near Cumbernauld | £31 | £234 |
| Install An RSJ near Livingston | £35 | £256 |
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 - £17,254

Two storey extension - £87,632

Build a timber frame extension - £25,754

Build a swimming pool - £80,754

Single storey extension - £50,088

Side return extension - £38,737

Install an RSJ - £1,954

Outbuilding - £9,754

Build a Mansard loft conversion - £51,754

Loft conversion - £31,448

Build a kitchen extension - £41,754

Hip to gable loft conversion - £41,754

Granny annexe - £86,754

Garden office - £9,754

Convert a Garage - £15,754

Garage - £18,254

Build a flat roof extension - £21,754

Build a dormer loft conversion - £41,754

Concrete foundations - £6,004

Convert a bungalow loft - £28,754

Convert a basement - £34,737