From £2,408
G J Construction is an established extension buildering business in GL54. We come highly recommended and provide competitive quotes for your work.<...
From £2,072
Our building services company, Northleach Property Services , was established in 2004. Since then, we have been helping customers in the Cotswolds ...
From £2,544
Experienced extension builder ready to quote for your work. Oak Tree Renovations Ltd is the best extension builder in GL54. No obligation free quot...
From £2,072
Cotswold Property Solutions is a group of independent property professionals, working together to build, design, style, decorate, furnish, secure, ...
From £2,136
Experienced extension builder ready to quote for your work. Martin Fry Roofing & Building Contractors is the best extension builder in GL54. No obl...
From £2,024
Deacon Builders Ltd is an established and experienced local extension builder in GL54. Please contact us for a free, no obligation quote and compet...
From £3,032
Local well established Building and Roofing Contractors, with over 100 years combined experience.
From £2,200
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £1,768
Trusted and professional extension builder in GL54. Experienced in all extension buildering work and keeping within budget and on quote. Phil Mitch...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in GL54 it ranges from £1,768 (Phil Mitchell Builders based in GL52) to £3,032 (S Rosato & Sons Ltd based in GL52).
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 GL54 by posting a job with HaMuch and we will send it to extension builders in GL54.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Cheltenham | £28 | £218 |
| Install An RSJ near Evesham | £32 | £246 |
| Install An RSJ near Gloucester | £26 | £202 |
| Install An RSJ near Witney | £29 | £219 |
| Install An RSJ near Quedgeley | £27 | £212 |
| Install An RSJ near Stroud | £28 | £211 |
| Install An RSJ near Wychavon | £27 | £207 |
| Install An RSJ near Thamesdown | £32 | £208 |
| Install An RSJ near Stratford-upon-Avon | £24 | £190 |
| Install An RSJ near Stratford-on-Avon | £24 | £190 |
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 - £17,578

Two storey extension - £88,118

Build a timber frame extension - £26,078

Build a swimming pool - £81,078

Single storey extension - £56,568

Side return extension - £42,382

Install an RSJ - £2,278

Outbuilding - £10,078

Build a Mansard loft conversion - £52,078

Loft conversion - £34,485

Build a kitchen extension - £42,078

Hip to gable loft conversion - £42,078

Granny annexe - £87,078

Garden office - £10,078

Convert a Garage - £16,078

Garage - £18,578

Build a flat roof extension - £22,078

Build a dormer loft conversion - £42,078

Concrete foundations - £6,328

Convert a bungalow loft - £29,078

Convert a basement - £38,382