From £2,480
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,328
I'm a bricklayer builder with over 20 years experience all job done to the very highest of standards all work guaranteed
From £2,664
Steen Property Developments are here to help customers who need an Extension Builder in AB21. We offer a competitive rate to complete all your exte...
From £2,696
At Tip-Top Building Services Ltd. we offer all aspects of Building, Roofing, Electrical, Joinery, Plumbing, Heating and more. We can carry out a la...
From £2,592
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,736
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,864
Jenkins Carpentry & Construction Ltd serves as a leading Construction Company covering Surrey and London. We’re a team of fully-certified profess...
From £2,112
Cairnrowan Custom Homes is an established extension buildering business in AB21. We come highly recommended and provide competitive quotes for your...
From £2,784
WAYNE DUNBAR BUILDING SERV LTD is an established and experienced local extension builder in AB21. Please contact us for a free, no obligation quote...
From £2,224
BANCON CONSTRUCTION LTD are here to help customers who need an Extension Builder in AB21. We offer a competitive rate to complete all your extensio...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in AB21 it ranges from £2,112 (Cairnrowan Custom Homes based in AB41) to £2,864 (Jenkins Carpentry & Construction Ltd based in ).
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 AB21 by posting a job with HaMuch and we will send it to extension builders in AB21.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Aberdeen | £32 | £302 |
| Install An RSJ near Peterhead | £24 | £224 |
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 - £17,848

Two storey extension - £88,522

Build a timber frame extension - £26,348

Build a swimming pool - £81,348

Single storey extension - £61,960

Side return extension - £45,415

Install an RSJ - £2,548

Outbuilding - £10,348

Build a Mansard loft conversion - £52,348

Loft conversion - £37,013

Build a kitchen extension - £42,348

Hip to gable loft conversion - £42,348

Granny annexe - £87,348

Garden office - £10,348

Convert a Garage - £16,348

Garage - £18,848

Build a flat roof extension - £22,348

Build a dormer loft conversion - £42,348

Concrete foundations - £6,598

Convert a bungalow loft - £29,348

Convert a basement - £41,415