Paul Foran
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Terry Howlett
We are a local building company who specialises in keeping our customers happy we are reliable friendly. We carry out all types of building wo...
H.B.S is an established extension buildering business in OL11. We come highly recommended and provide competitive quotes for your work.
Need an Extension Builder in OL11? MK Builders has been helping local clients (20 mile radius) with their extension buildering jobs for many years....
Need an Extension Builder in OL11? G Wardley Building & Repairs has been helping local clients (20 mile radius) with their extension buildering job...
Tony Holden
New era developments is a small local limited company. Who create better living spaces . On time and on buget. To a very high standard. Thanks tony...
Ian Smedley
I G Smedley is an established and experienced local extension builder in OL11. Please contact us for a free, no obligation quote and competitive ra...
PLP CONSTRUCTION LTD is an established and experienced local extension builder in OL11. Please contact us for a free, no obligation quote and compe...
From £1,840
Need to find an Extension Builder near you for all your extension buildering work?
Pennine Loft Conversions provides a local, trusted exten...
From £1,360
Khuram Shahzad
MKS Builders Ltd is an established extension buildering business in OL11. We come highly recommended and provide competitive quotes for your work.<...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in OL11 it ranges from £1,160 (Aquatec Builder based in OL10) to £2,256 (I G Smedley based in M24).
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 OL11 by posting a job with HaMuch and we will send it to extension builders in OL11.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Rochdale | £30 | £221 |
| Install An RSJ near Heywood | £30 | £221 |
| Install An RSJ near Royton | £30 | £225 |
| Install An RSJ near Middleton | £31 | £227 |
| Install An RSJ near Chadderton | £31 | £225 |
| Install An RSJ near Bury | £30 | £219 |
| Install An RSJ near Oldham | £31 | £229 |
| Install An RSJ near Whitefield | £31 | £229 |
| Install An RSJ near Prestwich | £31 | £233 |
| Install An RSJ near Failsworth | £35 | £236 |
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 - £17,153

Two storey extension - £87,479

Build a timber frame extension - £25,653

Build a swimming pool - £80,653

Single storey extension - £48,056

Side return extension - £37,594

Install an RSJ - £1,853

Outbuilding - £9,653

Build a Mansard loft conversion - £51,653

Loft conversion - £30,495

Build a kitchen extension - £41,653

Hip to gable loft conversion - £41,653

Granny annexe - £86,653

Garden office - £9,653

Convert a Garage - £15,653

Garage - £18,153

Build a flat roof extension - £21,653

Build a dormer loft conversion - £41,653

Concrete foundations - £5,903

Convert a bungalow loft - £28,653

Convert a basement - £33,594