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Select your affordable Horncastle extension builder
From £1,728
Trusted and professional extension builder in Horncastle. Experienced in all extension buildering work and keeping within budget and on quote. PAUL...
From £1,744
A family run business, operating all over Lincolnshire.

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Horncastle it ranges from £1,728 (PAUL JACKSON BUILDING CONTRS based in PE23) to £1,744 (JP Design & Develop Ltd based in LN10).
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 Horncastle by posting a job with HaMuch and we will send it to extension builders in Horncastle.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near East Lindsey | £27 | £198 |
| Install An RSJ near Boston | £28 | £262 |
| Install An RSJ near Lincoln | £31 | £232 |
| Install An RSJ near Cleethorpes | £32 | £246 |
| Install An RSJ near North East Lincolnshire | £32 | £246 |
| Install An RSJ near Grimsby | £32 | £246 |
| Install An RSJ near Spalding | £32 | £238 |
| Install An RSJ near Gainsborough | £30 | £234 |
| Install An RSJ near Newark-on-Trent | £33 | £241 |
| Install An RSJ near Grantham | £38 | £228 |
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 - £17,036

Two storey extension - £87,304

Build a timber frame extension - £25,536

Build a swimming pool - £80,536

Single storey extension - £45,720

Side return extension - £36,280

Install an RSJ - £1,736

Outbuilding - £9,536

Build a Mansard loft conversion - £51,536

Loft conversion - £29,400

Build a kitchen extension - £41,536

Hip to gable loft conversion - £41,536

Granny annexe - £86,536

Garden office - £9,536

Convert a Garage - £15,536

Garage - £18,036

Build a flat roof extension - £21,536

Build a dormer loft conversion - £41,536

Concrete foundations - £5,786

Convert a bungalow loft - £28,536

Convert a basement - £32,280