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Select your affordable B26 extension builder
Gary Wilson
Reliable person 25 years experience
if you look on a website rated people and have a look at my ratings
Need to find an Extension Builder near you for all your extension buildering work?
Avonvale Garage Doors provides a local, trusted extensio...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Relax... you have found a reliable extension builder in B26. F.I.I Building Services Ltd is a friendly and reliable company based in B26 who consid...
Need to find an Extension Builder near you for all your extension buildering work?
John Kinloch Construction Ltd provides a local, trusted ...
We are a forward thinking, award winning design and build company based in Solihull in the West Midlands. We strive to deliver the best experience ...
Experienced extension builder ready to quote for your work. x10hosts is the best extension builder in B26. No obligation free quotes and many happy...
From £2,096
Experienced extension builder ready to quote for your work. DM FLOYD BUILDING is the best extension builder in B26. No obligation free quotes and m...
From £1,632
Peter Smith
Reliable and trustworthy
Also on checkatrafe
From £1,224
JAMES Crawford
we have over 13 years exp
we go that extra mile to make sure customers are 100 % happy
we cover a 20 miles radus for b26 area...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in B26 it ranges from £1,224 (J s building & maintenance services limited based in B26) to £2,168 (Birch Group based in b92).
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 B26 by posting a job with HaMuch and we will send it to extension builders in B26.
"RSJ installation" - B90, job posted 08/03/26
"Removal of 3 walls and 3 RSJ installations to extend a kitchen. Need for a structual engineering consultation and building control approval since at least one wall will be load bearing." - BIRMINGHAM, job posted 05/05/24
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Solihull | £29 | £231 |
| Install An RSJ near Birmingham | £28 | £228 |
| Install An RSJ near Knowle | £31 | £241 |
| Install An RSJ near Sutton Coldfield | £28 | £227 |
| Install An RSJ near Smethwick | £29 | £230 |
| Install An RSJ near Oldbury | £29 | £229 |
| Install An RSJ near West Bromwich | £29 | £228 |
| Install An RSJ near Halesowen | £28 | £225 |
| Install An RSJ near Sandwell | £29 | £231 |
| Install An RSJ near Rowley Regis | £29 | £228 |
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 - £17,222

Two storey extension - £87,584

Build a timber frame extension - £25,722

Build a swimming pool - £80,722

Single storey extension - £49,448

Side return extension - £38,377

Install an RSJ - £1,922

Outbuilding - £9,722

Build a Mansard loft conversion - £51,722

Loft conversion - £31,148

Build a kitchen extension - £41,722

Hip to gable loft conversion - £41,722

Granny annexe - £86,722

Garden office - £9,722

Convert a Garage - £15,722

Garage - £18,222

Build a flat roof extension - £21,722

Build a dormer loft conversion - £41,722

Concrete foundations - £5,972

Convert a bungalow loft - £28,722

Convert a basement - £34,377