From £2,120
Inspire Carpentry and Construction Ltd is an established and experienced local extension builder in SG19. Please contact us for a free, no obligati...
From £2,136
Plumbing, painting exterior, interior, extensions, plastering, skiming, carpeting, Flooring, you can ask us ..
From £1,656
we are very efficient in our work.and make sure our client is one 100% satisfied with our work.
From £2,656
A.J Builders is an established and experienced local extension builder in SG19. Please contact us for a free, no obligation quote and competitive r...
From £2,472
Top Notch Tradesmen is an established and experienced local extension builder in SG19. Please contact us for a free, no obligation quote and compet...
From £2,216
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,544
Need to find an Extension Builder near you for all your extension buildering work?
Greg-Bud provides a local, trusted extension buildering ...
From £2,448
RS Plumbing and Heating is a trusted extension builder serving customers in SG19 and the surrounding area. Contact us to today to get a competitive...
From £2,648
Relax... you have found a reliable extension builder in SG19. Bench Mark Construction is a friendly and reliable company based in SG19 who consider...
From £3,008
Need to find an Extension Builder near you for all your extension buildering work?
A M Interiors provides a local, trusted extension builde...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in SG19 it ranges from £1,656 (Rite Builders based in LU1) to £3,008 (A M Interiors based in MK42).
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 SG19 by posting a job with HaMuch and we will send it to extension builders in SG19.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Biggleswade | £41 | £268 |
| Install An RSJ near St Neots | £51 | £318 |
| Install An RSJ near Bedford | £45 | £278 |
| Install An RSJ near South Bedfordshire | £45 | £278 |
| Install An RSJ near Kempston | £44 | £273 |
| Install An RSJ near Letchworth | £44 | £283 |
| Install An RSJ near South Cambridgeshire | £43 | £305 |
| Install An RSJ near North Hertfordshire | £44 | £283 |
| Install An RSJ near Ampthill | £38 | £258 |
| Install An RSJ near Mid Bedfordshire | £42 | £276 |
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 - £17,690

Two storey extension - £88,286

Build a timber frame extension - £26,190

Build a swimming pool - £81,190

Single storey extension - £58,808

Side return extension - £43,642

Install an RSJ - £2,390

Outbuilding - £10,190

Build a Mansard loft conversion - £52,190

Loft conversion - £35,535

Build a kitchen extension - £42,190

Hip to gable loft conversion - £42,190

Granny annexe - £87,190

Garden office - £10,190

Convert a Garage - £16,190

Garage - £18,690

Build a flat roof extension - £22,190

Build a dormer loft conversion - £42,190

Concrete foundations - £6,440

Convert a bungalow loft - £29,190

Convert a basement - £39,642