MAGNOLIA HOME is family run,Tunbridge Wells based building company,.With years expirence,you as the customer can be assured that you are in safe ha...
Hyde Building Ltd are here to help customers who need an Extension Builder in TN12. We offer a competitive rate to complete all your extension buil...
Relax... you have found a reliable extension builder in TN12. Clint Construction is a friendly and reliable company based in TN12 who consider no j...
"Excellent painting skills." - MAIDSTONE,reviewed 27/03/19, TONY
We are a family run business with over 30 years experience in the roofing industry. We pride ourselves on our high standards of workmanship and cus...
Mayfair developers have been in the construction industry for over a decade. Our passion is to transform old spaces into new usable homes for our c...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Experienced extension builder ready to quote for your work. SEAN EVANS GENERAL BUILDER is the best extension builder in TN12. No obligation free qu...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Top Form Construction are here to help customers who need an Extension Builder in TN12. We offer a competitive rate to complete all your extension ...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in TN12 it ranges from £1,520 (Magnoli Home based in TN2) to £2,528 (Mayfair Developers ltd based in ME8).
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 TN12 by posting a job with HaMuch and we will send it to extension builders in TN12.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Tonbridge | £38 | £254 |
| Install An RSJ near Maidstone | £40 | £255 |
| Install An RSJ near Tunbridge Wells | £37 | £258 |
| Install An RSJ near Larkfield | £41 | £253 |
| Install An RSJ near Sevenoaks | £38 | £234 |
| Install An RSJ near Rochester | £39 | £254 |
| Install An RSJ near Crowborough | £36 | £258 |
| Install An RSJ near Chatham | £39 | £254 |
| Install An RSJ near Gillingham | £39 | £253 |
| Install An RSJ near Wealden | £35 | £256 |
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 - £17,432

Two storey extension - £87,898

Build a timber frame extension - £25,932

Build a swimming pool - £80,932

Single storey extension - £53,640

Side return extension - £40,735

Install an RSJ - £2,132

Outbuilding - £9,932

Build a Mansard loft conversion - £51,932

Loft conversion - £33,113

Build a kitchen extension - £41,932

Hip to gable loft conversion - £41,932

Granny annexe - £86,932

Garden office - £9,932

Convert a Garage - £15,932

Garage - £18,432

Build a flat roof extension - £21,932

Build a dormer loft conversion - £41,932

Concrete foundations - £6,182

Convert a bungalow loft - £28,932

Convert a basement - £36,735