From £2,296
Relax... you have found a reliable extension builder in SG2. GB Build is a friendly and reliable company based in SG2 who consider no job as too bi...
From £2,392
In an unstable market house extensions are often the most viable option, helping you to get the most out of the space you have without the addition...
From £2,560
We are a family run business with over 30 years of combined experience, we offer everything from replacing doors and worktops on your kitchen to sm...
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 £2,360
Experienced extension builder ready to quote for your work. Precision Roofing & Building Maintenance is the best extension builder in SG2. No oblig...
From £2,472
Harris Building Solutions Limited is an established extension buildering business in SG2. We come highly recommended and provide competitive quotes...
From £2,704
WALKERN CONSTRUCTION LIMITED is an established and experienced local extension builder in SG2. Please contact us for a free, no obligation quote an...
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 £2,216
Experienced extension builder ready to quote for your work. G B BUILDSTORE LTD is the best extension builder in SG2. No obligation free quotes and ...
From £2,144
Ross Taylor Homes is an established extension buildering business in SG2. We come highly recommended and provide competitive quotes for your work.<...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in SG2 it ranges from £2,144 (Ross Taylor Homes based in SG3) 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 SG2 by posting a job with HaMuch and we will send it to extension builders in SG2.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Stevenage | £44 | £282 |
| Install An RSJ near Hitchin | £43 | £283 |
| Install An RSJ near North Hertfordshire | £44 | £283 |
| Install An RSJ near East Hertfordshire | £44 | £289 |
| Install An RSJ near Letchworth | £44 | £283 |
| Install An RSJ near Welwyn Garden City | £42 | £268 |
| Install An RSJ near Hertford | £46 | £289 |
| Install An RSJ near Ware | £47 | £296 |
| Install An RSJ near Harpenden | £86 | £315 |
| Install An RSJ near Hatfield | £64 | £283 |
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 - £17,694

Two storey extension - £88,292

Build a timber frame extension - £26,194

Build a swimming pool - £81,194

Single storey extension - £58,888

Side return extension - £43,687

Install an RSJ - £2,394

Outbuilding - £10,194

Build a Mansard loft conversion - £52,194

Loft conversion - £35,573

Build a kitchen extension - £42,194

Hip to gable loft conversion - £42,194

Granny annexe - £87,194

Garden office - £10,194

Convert a Garage - £16,194

Garage - £18,694

Build a flat roof extension - £22,194

Build a dormer loft conversion - £42,194

Concrete foundations - £6,444

Convert a bungalow loft - £29,194

Convert a basement - £39,687