From £2,688
Need an Extension Builder in North Hertfordshire? M SPINDLER CONSTRUCTION LTD has been helping local clients (20 mile radius) with their extension ...
From £2,408
Need an Extension Builder in North Hertfordshire? WILLMOTT DIXON CONSTRUCTION LI has been helping local clients (20 mile radius) with their extensi...
From £2,328
Draincall Services Ltd is a trusted extension builder serving customers in North Hertfordshire and the surrounding area. Contact us to today to get...
From £2,368
Need an Extension Builder in North Hertfordshire? Gilbert & Gregson Construction Ltd has been helping local clients (20 mile radius) with their ext...
From £2,520
Totalworth Building Services is an established extension buildering business in North Hertfordshire. We come highly recommended and provide competi...
From £2,368
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,608
M P BUILDING LIMITED is an established and experienced local extension builder in North Hertfordshire. Please contact us for a free, no obligation ...
From £2,432
We are a local roofing company offering a complete roofing service.We provide one of the most cost effective, reliable roofing services in and ...
From £1,904
Need an Extension Builder in North Hertfordshire? L P L Property Services Limited has been helping local clients (20 mile radius) with their extens...
From £2,360
Experienced extension builder ready to quote for your work. Precision Roofing & Building Maintenance is the best extension builder in North Hertfor...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in North Hertfordshire it ranges from £1,904 (L P L Property Services Limited based in SG5) to £2,688 (M SPINDLER CONSTRUCTION LTD based in SG6).
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 North Hertfordshire by posting a job with HaMuch and we will send it to extension builders in North Hertfordshire.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near North Hertfordshire | £44 | £283 |
| Install An RSJ near Letchworth | £44 | £283 |
| Install An RSJ near Hitchin | £43 | £283 |
| Install An RSJ near Stevenage | £44 | £282 |
| Install An RSJ near East Hertfordshire | £44 | £289 |
| Install An RSJ near Biggleswade | £41 | £268 |
| Install An RSJ near Luton | £41 | £278 |
| Install An RSJ near Mid Bedfordshire | £42 | £276 |
| Install An RSJ near Welwyn Garden City | £42 | £268 |
| Install An RSJ near Harpenden | £86 | £315 |
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 - £17,698

Two storey extension - £88,298

Build a timber frame extension - £26,198

Build a swimming pool - £81,198

Single storey extension - £58,968

Side return extension - £43,732

Install an RSJ - £2,398

Outbuilding - £10,198

Build a Mansard loft conversion - £52,198

Loft conversion - £35,610

Build a kitchen extension - £42,198

Hip to gable loft conversion - £42,198

Granny annexe - £87,198

Garden office - £10,198

Convert a Garage - £16,198

Garage - £18,698

Build a flat roof extension - £22,198

Build a dormer loft conversion - £42,198

Concrete foundations - £6,448

Convert a bungalow loft - £29,198

Convert a basement - £39,732