From £2,184
HARVEY & LITTLE BUILDING SERVICES are here to help customers who need an Extension Builder in CO11. We offer a competitive rate to complete all you...
From £1,904
John O Connell Building Solutions is an established extension buildering business in CO11. We come highly recommended and provide competitive quote...
From £1,752
Qualified stonerestorer 35years experience own public liability insurance.
Worked on numerous listedbuilding through out &nb...
From £2,128
Our company is built on trust and communication with our clients.We are of firm belief that our customers needs are of the utmost importance.
From £2,344
Edwin Lewis Dickinson is a well established company providing all of its customers with the very highest quality of workmanship using only the best...
From £1,808
JDS Building Services is an established extension buildering business in CO11. We come highly recommended and provide competitive quotes for your w...
From £2,040
Having been established for over 10 years, we have accumulated a vast amount of local experience in all aspects of domestic renovation projects.We ...
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...
From £2,104
SPONG BUILDERS & CONTRACTORS is a trusted extension builder serving customers in CO11 and the surrounding area. Contact us to today to get a compet...
From £1,880
Trusted and professional extension builder in CO11. Experienced in all extension buildering work and keeping within budget and on quote. CHAPEL BUI...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in CO11 it ranges from £1,752 (T.S Stone Restoration based in CO16) to £2,344 (Edwin Lewis Dickinson Ltd based in CO12).
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 CO11 by posting a job with HaMuch and we will send it to extension builders in CO11.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Tendring | £27 | £195 |
| Install An RSJ near Harwich | £28 | £207 |
| Install An RSJ near Ipswich | £28 | £202 |
| Install An RSJ near Colchester | £29 | £200 |
| Install An RSJ near Clacton-on-Sea | £26 | £197 |
| Install An RSJ near Felixstowe | £27 | £203 |
| Install An RSJ near Sudbury | £30 | £208 |
| Install An RSJ near Stowmarket | £28 | £201 |
| Install An RSJ near Suffolk Coastal | £24 | £190 |
| Install An RSJ near Witham | £31 | £208 |
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 - £17,332

Two storey extension - £87,748

Build a timber frame extension - £25,832

Build a swimming pool - £80,832

Single storey extension - £51,640

Side return extension - £39,610

Install an RSJ - £2,032

Outbuilding - £9,832

Build a Mansard loft conversion - £51,832

Loft conversion - £32,175

Build a kitchen extension - £41,832

Hip to gable loft conversion - £41,832

Granny annexe - £86,832

Garden office - £9,832

Convert a Garage - £15,832

Garage - £18,332

Build a flat roof extension - £21,832

Build a dormer loft conversion - £41,832

Concrete foundations - £6,082

Convert a bungalow loft - £28,832

Convert a basement - £35,610