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Homeowners look no further if you want a qualified extension builder to work in your home. T K O Kitchens & Construction are tidy and neat, providi...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
G P GILMORE JOINERY T/A is an established extension buildering business in Walkden. We come highly recommended and provide competitive quotes for...
Brookmeade Building is an established extension buildering business in Walkden. We come highly recommended and provide competitive quotes for your ...
SMH Build & Renovate is an established extension buildering business in Walkden. We come highly recommended and provide competitive quotes for your...
Amak Construction is an established and experienced local extension builder in Walkden. Please contact us for a free, no obligation quote and compe...
Experienced extension builder ready to quote for your work. Advanced Builders & Roofers is the best extension builder in Walkden. No obligation fre...
Walkden, M28
Relax... you have found a reliable extension builder in Walkden. David Anderson Builders is a friendly and reliable company based in Walkden who co...
Need to find an Extension Builder near you for all your extension buildering work?
DC Contractors provides a local, trusted extension build...
Jonathan
Need to find an Extension Builder near you for all your extension buildering work?
ESBP Specialists Ltd provides a local, trusted extension...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Walkden it ranges from £1,784 (Amak Construction based in BL8) to £2,216 (G P GILMORE JOINERY T/A based in M41).
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 Walkden by posting a job with HaMuch and we will send it to extension builders in Walkden.
"Install an RSJ" - M27, job posted 02/09/26
"RSJ installation" - BOLTON, job posted 17/09/25
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Little Hulton | £31 | £220 |
| Install An RSJ near Farnworth | £30 | £219 |
| Install An RSJ near Swinton | £32 | £234 |
| Install An RSJ near Eccles | £32 | £236 |
| Install An RSJ near Atherton | £31 | £223 |
| Install An RSJ near Radcliffe | £30 | £220 |
| Install An RSJ near Bolton | £31 | £219 |
| Install An RSJ near Urmston | £32 | £237 |
| Install An RSJ near Salford | £32 | £237 |
| Install An RSJ near Whitefield | £31 | £229 |
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 - £17,313

Two storey extension - £87,719

Build a timber frame extension - £25,813

Build a swimming pool - £80,813

Single storey extension - £51,256

Side return extension - £39,394

Install an RSJ - £2,013

Outbuilding - £9,813

Build a Mansard loft conversion - £51,813

Loft conversion - £31,995

Build a kitchen extension - £41,813

Hip to gable loft conversion - £41,813

Granny annexe - £86,813

Garden office - £9,813

Convert a Garage - £15,813

Garage - £18,313

Build a flat roof extension - £21,813

Build a dormer loft conversion - £41,813

Concrete foundations - £6,063

Convert a bungalow loft - £28,813

Convert a basement - £35,394