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Select your affordable Sundon extension builder
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Experienced extension builder ready to quote for your work. HB Construction is the best extension builder in Sundon. No obligation free quotes and ...
Peter Rourke
Trusted and professional extension builder in Sundon. Experienced in all extension buildering work and keeping within budget and on quote. Peter's ...
Elena nuta Radu
Plumbing, painting exterior, interior, extensions, plastering, skiming, carpeting, Flooring, you can ask us ..
Sundon, LU3
Need to find an Extension Builder near you for all your extension buildering work?
Greg-Bud provides a local, trusted extension buildering ...
Top Notch Tradesmen is an established and experienced local extension builder in Sundon. Please contact us for a free, no obligation quote and comp...
A.J Builders is an established and experienced local extension builder in Sundon. Please contact us for a free, no obligation quote and competitive...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Klajdi Progja
Need to find an Extension Builder near you for all your extension buildering work?
Mat al construction ltd provides a local, trusted exten...
Trusted and professional extension builder in Sundon. Experienced in all extension buildering work and keeping within budget and on quote. Amcell R...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Sundon it ranges from £2,136 (Bacan's cleaning painting and decorating based in LU1) to £2,696 (Mat al construction ltd based in LU5).
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 Sundon by posting a job with HaMuch and we will send it to extension builders in Sundon.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Luton | £42 | £279 |
| Install An RSJ near Dunstable | £41 | £274 |
| Install An RSJ near Mid Bedfordshire | £42 | £276 |
| Install An RSJ near Harpenden | £45 | £282 |
| Install An RSJ near Hitchin | £43 | £283 |
| Install An RSJ near Ampthill | £38 | £258 |
| Install An RSJ near Leighton Buzzard | £38 | £270 |
| Install An RSJ near North Hertfordshire | £44 | £283 |
| Install An RSJ near Stevenage | £44 | £282 |
| Install An RSJ near Letchworth | £44 | £283 |
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 - £17,771

Two storey extension - £88,407

Build a timber frame extension - £26,271

Build a swimming pool - £81,271

Single storey extension - £60,424

Side return extension - £44,551

Install an RSJ - £2,471

Outbuilding - £10,271

Build a Mansard loft conversion - £52,271

Loft conversion - £36,293

Build a kitchen extension - £42,271

Hip to gable loft conversion - £42,271

Granny annexe - £87,271

Garden office - £10,271

Convert a Garage - £16,271

Garage - £18,771

Build a flat roof extension - £22,271

Build a dormer loft conversion - £42,271

Concrete foundations - £6,521

Convert a bungalow loft - £29,271

Convert a basement - £40,551