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Select your affordable Newmarket extension builder
Newmarket, CB8
Relax... you have found a reliable extension builder in Newmarket. Adams & Eden Restoration is a friendly and reliable company based in Newmarket w...
From £2,320
Newmarket, CB8
John Kirk Building Ltd is an established extension buildering business in Newmarket. We come highly recommended and provide competitive quotes for ...
From £2,368
Newmarket, CB8
Experienced extension builder ready to quote for your work. J&G HARDING BUILDING SERVICES is the best extension builder in Newmarket. No obligation...
From £2,192
Newmarket, CB8
Trusted and professional extension builder in Newmarket. Experienced in all extension buildering work and keeping within budget and on quote. Doug ...
From £2,272
Trusted and professional extension builder in Newmarket. Experienced in all extension buildering work and keeping within budget and on quote. Forem...
From £2,088
Need to find an Extension Builder near you for all your extension buildering work?
Bespoke Build and Restoration ltd provides a local, trus...
From £2,200
All In One Building Services is an established and experienced local extension builder in Newmarket. Please contact us for a free, no obligation qu...
From £2,048
Need to find an Extension Builder near you for all your extension buildering work?
John Jarvis Builders provides a local, trusted extension...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Newmarket it ranges from £2,048 (John Jarvis Builders based in IP28) to £2,760 (Adams & Eden Restoration based in Cb8).
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 Newmarket by posting a job with HaMuch and we will send it to extension builders in Newmarket.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Haverhill | £37 | £260 |
| Install An RSJ near Ely | £40 | £279 |
| Install An RSJ near Bury St Edmunds | £34 | £251 |
| Install An RSJ near Cambridge | £41 | £275 |
| Install An RSJ near South Cambridgeshire | £50 | £315 |
| Install An RSJ near Sudbury | £34 | £229 |
| Install An RSJ near Thetford | £42 | £277 |
| Install An RSJ near Braintree | £37 | £247 |
| Install An RSJ near Stowmarket | £30 | £221 |
| Install An RSJ near Huntingdon | £38 | £284 |
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 - £17,581

Two storey extension - £88,122

Build a timber frame extension - £26,081

Build a swimming pool - £81,081

Single storey extension - £56,620

Side return extension - £42,411

Install an RSJ - £2,281

Outbuilding - £10,081

Build a Mansard loft conversion - £52,081

Loft conversion - £34,509

Build a kitchen extension - £42,081

Hip to gable loft conversion - £42,081

Granny annexe - £87,081

Garden office - £10,081

Convert a Garage - £16,081

Garage - £18,581

Build a flat roof extension - £22,081

Build a dormer loft conversion - £42,081

Concrete foundations - £6,331

Convert a bungalow loft - £29,081

Convert a basement - £38,411