MDH Construction is an established and experienced local extension builder in CM6. Please contact us for a free, no obligation quote and competitiv...
Experienced extension builder ready to quote for your work. Capital Building & Maintenance is the best extension builder in CM6. No obligation free...
Hi my names Lewis in a trusted roofer, I’m a member of which trusted trader and Checkatrade member. I do all types of roof flat roofs, guttering,...
From £2,176
Need to find an Extension Builder near you for all your extension buildering work?
GEEVES BUILD LTD provides a local, trusted extension bui...
From £2,664
With over 35 years experience our reputation is built around the service we provide which is why we have a high percentage of repeat business and t...
From £2,656
Infinity’s founder has international property development expertise, having undertaken traditional and contemporary projects spanning the UK, Ire...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in CM6 it ranges from £2,176 (GEEVES BUILD LTD based in CM6) to £2,720 (1st Look Roofing based in CM6).
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 CM6 by posting a job with HaMuch and we will send it to extension builders in CM6.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Bishop's Stortford | £42 | £264 |
| Install An RSJ near Braintree | £37 | £247 |
| Install An RSJ near Chelmsford | £38 | £258 |
| Install An RSJ near Harlow | £43 | £288 |
| Install An RSJ near Witham | £36 | £240 |
| Install An RSJ near Haverhill | £37 | £260 |
| Install An RSJ near Ware | £47 | £296 |
| Install An RSJ near Maldon | £36 | £244 |
| Install An RSJ near East Hertfordshire | £44 | £289 |
| Install An RSJ near Hoddesdon | £46 | £296 |
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 - £17,809

Two storey extension - £88,464

Build a timber frame extension - £26,309

Build a swimming pool - £81,309

Single storey extension - £61,187

Side return extension - £44,980

Install an RSJ - £2,509

Outbuilding - £10,309

Build a Mansard loft conversion - £52,309

Loft conversion - £36,650

Build a kitchen extension - £42,309

Hip to gable loft conversion - £42,309

Granny annexe - £87,309

Garden office - £10,309

Convert a Garage - £16,309

Garage - £18,809

Build a flat roof extension - £22,309

Build a dormer loft conversion - £42,309

Concrete foundations - £6,559

Convert a bungalow loft - £29,309

Convert a basement - £40,980