From £2,344
Need to find an Extension Builder near you for all your extension buildering work?
TPJ Building Ltd provides a local, trusted extension bui...
From £2,424
LTM Construction is an established and experienced local extension builder in East Hertfordshire. Please contact us for a free, no obligation quote...
From £2,528
Reid James is a family run Building and Construction company based in Ware, Hertfordshire who cover all areas in London, Essex, Cambridge, and Bedf...
From £2,656
Steve Rolt Home Improvements Ltd was founded in 2016 in Buntingford, Hertfordshire, and from small beginnings, has gone from stren...
From £2,704
WALKERN CONSTRUCTION LIMITED is an established and experienced local extension builder in East Hertfordshire. Please contact us for a free, no obli...
From £2,656
Relax... you have found a reliable extension builder in East Hertfordshire. Up and Out Builds Ltd is a friendly and reliable company based in East ...
From £2,520
Bournes Projects LTD is an established and experienced local extension builder in East Hertfordshire. Please contact us for a free, no obligation q...
From £2,296
Relax... you have found a reliable extension builder in East Hertfordshire. GB Build is a friendly and reliable company based in East Hertfordshire...
From £2,432
Need an Extension Builder in East Hertfordshire? JK Character Construction Ltd has been helping local clients (20 mile radius) with their extension...
From £2,360
Experienced extension builder ready to quote for your work. Precision Roofing & Building Maintenance is the best extension builder in East Hertford...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in East Hertfordshire it ranges from £2,296 (GB Build based in SG2) to £2,704 (WALKERN CONSTRUCTION LIMITED based in SG2).
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 East Hertfordshire by posting a job with HaMuch and we will send it to extension builders in East Hertfordshire.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near East Hertfordshire | £44 | £289 |
| Install An RSJ near Ware | £47 | £296 |
| Install An RSJ near Hertford | £46 | £289 |
| Install An RSJ near Stevenage | £44 | £282 |
| Install An RSJ near North Hertfordshire | £44 | £283 |
| Install An RSJ near Welwyn Garden City | £42 | £268 |
| Install An RSJ near Hoddesdon | £46 | £296 |
| Install An RSJ near Hitchin | £43 | £283 |
| Install An RSJ near Letchworth | £44 | £283 |
| Install An RSJ near Bishop's Stortford | £42 | £264 |
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 - £17,792

Two storey extension - £88,438

Build a timber frame extension - £26,292

Build a swimming pool - £81,292

Single storey extension - £60,840

Side return extension - £44,785

Install an RSJ - £2,492

Outbuilding - £10,292

Build a Mansard loft conversion - £52,292

Loft conversion - £36,488

Build a kitchen extension - £42,292

Hip to gable loft conversion - £42,292

Granny annexe - £87,292

Garden office - £10,292

Convert a Garage - £16,292

Garage - £18,792

Build a flat roof extension - £22,292

Build a dormer loft conversion - £42,292

Concrete foundations - £6,542

Convert a bungalow loft - £29,292

Convert a basement - £40,785