Fishers Building & Paving Ltd is an established extension buildering business in BL5. We come highly recommended and provide competitive quotes for...
Need an Extension Builder in BL5? CB BUILDING & JOINERY LTD has been helping local clients (20 mile radius) with their extension buildering jobs fo...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
PETER BALDWIN BUILDERS is an established extension buildering business in BL5. We come highly recommended and provide competitive quotes for your w...
HAROLD ROBINSON
HAROLDS CORP is a trusted extension builder serving customers in BL5 and the surrounding area. Contact us to today to get a competitive quote for e...
Andrew Smethurst
APS pointing and property maintenance offers a complete building service from small patch pointing to full refurb or extensions. Competitiv...
From £2,200
SBA Facilities is a family run business founded by Director, Josef who has over 25 years of experience with the corporate, commercial, and domestic...
From £1,936
Lostock Design & Build Limited is an established and experienced local extension builder in BL5. Please contact us for a free, no obligation quote ...
From £2,232
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £1,888
Lostock Design & Build is an established and experienced local extension builder in BL5. Please contact us for a free, no obligation quote and comp...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in BL5 it ranges from £1,656 (Aps pointing and property maintenance based in WN2) to £2,248 (HAROLDS CORP based in WN2).
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 BL5 by posting a job with HaMuch and we will send it to extension builders in BL5.
"RSJ installation" - BOLTON, job posted 01/01/70
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Westhoughton | £31 | £222 |
| Install An RSJ near Atherton | £31 | £223 |
| Install An RSJ near Hindley | £30 | £219 |
| Install An RSJ near Horwich | £30 | £219 |
| Install An RSJ near Leigh | £31 | £224 |
| Install An RSJ near Bolton | £31 | £219 |
| Install An RSJ near Little Hulton | £31 | £220 |
| Install An RSJ near Farnworth | £30 | £219 |
| Install An RSJ near Wigan | £30 | £220 |
| Install An RSJ near Golborne | £30 | £222 |
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 - £17,303

Two storey extension - £87,705

Build a timber frame extension - £25,803

Build a swimming pool - £80,803

Single storey extension - £51,064

Side return extension - £39,286

Install an RSJ - £2,003

Outbuilding - £9,803

Build a Mansard loft conversion - £51,803

Loft conversion - £31,905

Build a kitchen extension - £41,803

Hip to gable loft conversion - £41,803

Granny annexe - £86,803

Garden office - £9,803

Convert a Garage - £15,803

Garage - £18,303

Build a flat roof extension - £21,803

Build a dormer loft conversion - £41,803

Concrete foundations - £6,053

Convert a bungalow loft - £28,803

Convert a basement - £35,286