From £2,784
Relax... you have found a reliable extension builder in LL11. David Williams General Builder & Maintenance is a friendly and reliable company based...
From £2,248
Experienced extension builder ready to quote for your work. Guest & Roberts is the best extension builder in LL11. No obligation free quotes and ma...
From £2,216
Experienced extension builder ready to quote for your work. READ CONSTRUCTION HOLDINGS LTD is the best extension builder in LL11. No obligation fre...
From £2,216
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,272
DMS Building Services are here to help customers who need an Extension Builder in LL11. We offer a competitive rate to complete all your extension ...
From £2,072
Need to find an Extension Builder near you for all your extension buildering work?
A M F BUILDING SERVICES provides a local, trusted extens...
From £2,376
Cheshire Oak Structures is an established and experienced local extension builder in LL11. Please contact us for a free, no obligation quote and co...
From £2,256
AJ Solutions is an established extension buildering business in LL11. We come highly recommended and provide competitive quotes for your work.
...From £2,104
Klw consultancy is an established and experienced local extension builder in LL11. Please contact us for a free, no obligation quote and competitiv...
From £2,128
Need to find an Extension Builder near you for all your extension buildering work?
Fistral ltd provides a local, trusted extension builderi...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in LL11 it ranges from £2,072 (A M F BUILDING SERVICES based in CH5) to £2,784 (David Williams General Builder & Maintenance based in LL11).
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 LL11 by posting a job with HaMuch and we will send it to extension builders in LL11.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Wrexham | £34 | £263 |
| Install An RSJ near Wrexham Maelor | £34 | £261 |
| Install An RSJ near Vale Royal | £35 | £251 |
| Install An RSJ near Flintshire | £32 | £224 |
| Install An RSJ near Hawarden | £33 | £228 |
| Install An RSJ near Chester | £32 | £220 |
| Install An RSJ near Connah's Quay | £33 | £229 |
| Install An RSJ near Ellesmere Port | £31 | £214 |
| Install An RSJ near Heswall | £30 | £213 |
| Install An RSJ near Bebington | £31 | £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 - £17,567

Two storey extension - £88,101

Build a timber frame extension - £26,067

Build a swimming pool - £81,067

Single storey extension - £56,344

Side return extension - £42,256

Install an RSJ - £2,267

Outbuilding - £10,067

Build a Mansard loft conversion - £52,067

Loft conversion - £34,380

Build a kitchen extension - £42,067

Hip to gable loft conversion - £42,067

Granny annexe - £87,067

Garden office - £10,067

Convert a Garage - £16,067

Garage - £18,567

Build a flat roof extension - £22,067

Build a dormer loft conversion - £42,067

Concrete foundations - £6,317

Convert a bungalow loft - £29,067

Convert a basement - £38,256