From £2,208
We are a family run business with 20 years experience.
We take great care and attention to the work we carry out and pride ourselves on ...
From £2,136
Dore Decor are a family run business with over 30 years experience - we offer an extensive range of building services and are able to provide a ful...
From £2,312
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,544
Trusted and professional extension builder in Balby. Experienced in all extension buildering work and keeping within budget and on quote. AMB Joine...
From £2,184
BP Builders are here to help customers who need an Extension Builder in Balby. We offer a competitive rate to complete all your extension builderin...
From £2,064
Trusted and professional extension builder in Balby. Experienced in all extension buildering work and keeping within budget and on quote. MGG CONST...
From £2,264
Prestine Property Maintenance Services is an established and experienced local extension builder in Balby. Please contact us for a free, no obligat...
From £2,112
MANVERS CONSTRUCTION is an established and experienced local extension builder in Balby. Please contact us for a free, no obligation quote and comp...
From £1,952
J CLARKE CONSTRUCTION LTD are here to help customers who need an Extension Builder in Balby. We offer a competitive rate to complete all your exten...
From £2,168
Relax... you have found a reliable extension builder in Balby. CS Construction & Conversions is a friendly and reliable company based in Balby who ...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Balby it ranges from £1,952 (J CLARKE CONSTRUCTION LTD based in S75) to £2,544 (AMB Joinery & Building Services based in S8).
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 Balby by posting a job with HaMuch and we will send it to extension builders in Balby.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Doncaster | £29 | £238 |
| Install An RSJ near Wickersley | £33 | £257 |
| Install An RSJ near Rotherham | £33 | £257 |
| Install An RSJ near Bassetlaw | £31 | £243 |
| Install An RSJ near Pontefract | £30 | £228 |
| Install An RSJ near Retford | £31 | £243 |
| Install An RSJ near Worksop | £33 | £265 |
| Install An RSJ near Barnsley | £31 | £242 |
| Install An RSJ near Goole | £26 | £217 |
| Install An RSJ near Gainsborough | £30 | £234 |
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 - £17,494

Two storey extension - £87,992

Build a timber frame extension - £25,994

Build a swimming pool - £80,994

Single storey extension - £54,888

Side return extension - £41,437

Install an RSJ - £2,194

Outbuilding - £9,994

Build a Mansard loft conversion - £51,994

Loft conversion - £33,698

Build a kitchen extension - £41,994

Hip to gable loft conversion - £41,994

Granny annexe - £86,994

Garden office - £9,994

Convert a Garage - £15,994

Garage - £18,494

Build a flat roof extension - £21,994

Build a dormer loft conversion - £41,994

Concrete foundations - £6,244

Convert a bungalow loft - £28,994

Convert a basement - £37,437