From £2,048
Experienced extension builder ready to quote for your work. Total Renovations is the best extension builder in CO15. No obligation free quotes and ...
From £1,984
SJ Price Brickwork is a trusted extension builder serving customers in CO15 and the surrounding area. Contact us to today to get a competitive quot...
From £1,816
Tendring Building Services Limited is an established extension buildering business in CO15. We come highly recommended and provide competitive quot...
From £2,232
Kontor Construction Ltd are here to help customers who need an Extension Builder in CO15. We offer a competitive rate to complete all your extensio...
From £1,920
Need an Extension Builder in CO15? S & A Building & Landscapes Service has been helping local clients (20 mile radius) with their extension builder...
From £2,272
Ace Garage Doors is an established extension buildering business in CO15. We come highly recommended and provide competitive quotes for your work.<...
From £2,016
M & C CONSTRUCTION is an established extension buildering business in CO15. We come highly recommended and provide competitive quotes for your work...
From £2,240
ALPHA BUILDING COMPANY LTD are here to help customers who need an Extension Builder in CO15. We offer a competitive rate to complete all your exten...
From £2,104
SPONG BUILDERS & CONTRACTORS is a trusted extension builder serving customers in CO15 and the surrounding area. Contact us to today to get a compet...
From £2,176
Greyline Interiors is a family run home refurbishment business with an eye for the latest trends and traditional values.We strive for quality, valu...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in CO15 it ranges from £1,816 (Tendring Building Services Limited based in CO15) to £2,272 (Ace Garage Doors based in CO15).
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 CO15 by posting a job with HaMuch and we will send it to extension builders in CO15.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Clacton-on-Sea | £31 | £232 |
| Install An RSJ near Tendring | £31 | £226 |
| Install An RSJ near Harwich | £34 | £248 |
| Install An RSJ near Colchester | £33 | £230 |
| Install An RSJ near Felixstowe | £31 | £231 |
| Install An RSJ near Ipswich | £33 | £235 |
| Install An RSJ near Maldon | £36 | £244 |
| Install An RSJ near Witham | £36 | £240 |
| Install An RSJ near Sudbury | £34 | £229 |
| Install An RSJ near Southend-on-Sea | £38 | £248 |
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 - £17,381

Two storey extension - £87,821

Build a timber frame extension - £25,881

Build a swimming pool - £80,881

Single storey extension - £52,616

Side return extension - £40,159

Install an RSJ - £2,081

Outbuilding - £9,881

Build a Mansard loft conversion - £51,881

Loft conversion - £32,633

Build a kitchen extension - £41,881

Hip to gable loft conversion - £41,881

Granny annexe - £86,881

Garden office - £9,881

Convert a Garage - £15,881

Garage - £18,381

Build a flat roof extension - £21,881

Build a dormer loft conversion - £41,881

Concrete foundations - £6,131

Convert a bungalow loft - £28,881

Convert a basement - £36,159