From £1,824
Sleaford, NG34
Experienced extension builder ready to quote for your work. RANDALL BUILDERS LTD is the best extension builder in Sleaford. No obligation free quot...
From £1,792
Sleaford, NG34
Relax... you have found a reliable extension builder in Sleaford. NEWTEC CONSTRUCTION LTD is a friendly and reliable company based in Sleaford who ...
From £1,720
Sleaford, NG34
MOOR FARM BUILDING CO LIMITED is an established extension buildering business in Sleaford. We come highly recommended and provide competitive quote...
From £1,848
Sleaford, NG34
Addison are here to help customers who need an Extension Builder in Sleaford. We offer a competitive rate to complete all your extension buildering...
From £1,464
Sleaford, NG34
KIPS BUILDERS is a trusted extension builder serving customers in Sleaford and the surrounding area. Contact us to today to get a competitive quote...
From £1,768
BRIARWOOD BUILDING CONTRS LTD is an established extension buildering business in Sleaford. We come highly recommended and provide competitive quote...
From £2,032
Our building services company DH Home Improvements was established in 2003. Since then we have been helping customers in Lincolnshire and the surro...
From £1,688
The Glass Box is a trusted extension builder serving customers in Sleaford and the surrounding area. Contact us to today to get a competitive quote...
From £1,472
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 Sleaford it ranges from £1,464 (KIPS BUILDERS based in NG34) to £2,032 (DH Home Improvements based in NG34).
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 Sleaford by posting a job with HaMuch and we will send it to extension builders in Sleaford.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Grantham | £38 | £228 |
| Install An RSJ near Boston | £28 | £262 |
| Install An RSJ near Spalding | £32 | £238 |
| Install An RSJ near Newark-on-Trent | £33 | £241 |
| Install An RSJ near Lincoln | £31 | £232 |
| Install An RSJ near Stamford | £35 | £248 |
| Install An RSJ near Melton Mowbray | £31 | £222 |
| Install An RSJ near Gedling | £33 | £242 |
| Install An RSJ near Carlton | £33 | £242 |
| Install An RSJ near Peterborough | £40 | £281 |
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 - £17,035

Two storey extension - £87,303

Build a timber frame extension - £25,535

Build a swimming pool - £80,535

Single storey extension - £45,704

Side return extension - £36,271

Install an RSJ - £1,735

Outbuilding - £9,535

Build a Mansard loft conversion - £51,535

Loft conversion - £29,393

Build a kitchen extension - £41,535

Hip to gable loft conversion - £41,535

Granny annexe - £86,535

Garden office - £9,535

Convert a Garage - £15,535

Garage - £18,035

Build a flat roof extension - £21,535

Build a dormer loft conversion - £41,535

Concrete foundations - £5,785

Convert a bungalow loft - £28,535

Convert a basement - £32,271