From £2,304
Relax... you have found a reliable extension builder in Suffolk. Pinnacle Construction is a friendly and reliable company based in Suffolk who cons...
From £2,040
Need to find an Extension Builder near you for all your extension buildering work?
D Mason Developments Ltd provides a local, trusted exten...
From £2,008
BOWIE CONSTRUCTION LTD is a trusted extension builder serving customers in Suffolk and the surrounding area. Contact us to today to get a competiti...
From £2,064
Need an Extension Builder in Suffolk? K T GRIDLEY GENERAL BUILDER has been helping local clients (20 mile radius) with their extension buildering j...
From £2,080
Need an Extension Builder in Suffolk? Mc2 Building Services has been helping local clients (20 mile radius) with their extension buildering jobs fo...
From £2,168
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,368
Experienced extension builder ready to quote for your work. J&G HARDING BUILDING SERVICES is the best extension builder in Suffolk. No obligation f...
From £2,416
Need an Extension Builder in Suffolk? DELTA BUILD LIMITED has been helping local clients (20 mile radius) with their extension buildering jobs for ...
From £2,192
Trusted and professional extension builder in Suffolk. Experienced in all extension buildering work and keeping within budget and on quote. Doug Mi...
From £2,544
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Suffolk it ranges from £2,008 (BOWIE CONSTRUCTION LTD based in CB21) to £2,544 (EXP Property Maintenance based in CB22).
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 Suffolk by posting a job with HaMuch and we will send it to extension builders in Suffolk.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Haverhill | £37 | £260 |
| Install An RSJ near Sudbury | £34 | £229 |
| Install An RSJ near Braintree | £37 | £247 |
| Install An RSJ near Cambridge | £38 | £271 |
| Install An RSJ near Bury St Edmunds | £34 | £251 |
| Install An RSJ near South Cambridgeshire | £43 | £305 |
| Install An RSJ near Bishop's Stortford | £42 | £264 |
| Install An RSJ near Ely | £40 | £279 |
| Install An RSJ near Witham | £36 | £240 |
| Install An RSJ near Colchester | £33 | £230 |
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 - £17,518

Two storey extension - £88,028

Build a timber frame extension - £26,018

Build a swimming pool - £81,018

Single storey extension - £55,368

Side return extension - £41,707

Install an RSJ - £2,218

Outbuilding - £10,018

Build a Mansard loft conversion - £52,018

Loft conversion - £33,923

Build a kitchen extension - £42,018

Hip to gable loft conversion - £42,018

Granny annexe - £87,018

Garden office - £10,018

Convert a Garage - £16,018

Garage - £18,518

Build a flat roof extension - £22,018

Build a dormer loft conversion - £42,018

Concrete foundations - £6,268

Convert a bungalow loft - £29,018

Convert a basement - £37,707