From £2,224
Spend a Penny Installations Ltd is an established extension buildering business in TN10. We come highly recommended and provide competitive quotes ...
From £2,096
M L Builders & Sons Limited is an established and experienced local extension builder in TN10. Please contact us for a free, no obligation quote an...
From £2,128
Nordic Sky Limited is an established and experienced local extension builder in TN10. Please contact us for a free, no obligation quote and competi...
From £2,440
montyandbo is an established and experienced local extension builder in TN10. Please contact us for a free, no obligation quote and competitive rat...
From £2,072
DAVID WILLIAMSON CONSTRUCTION is a trusted extension builder serving customers in TN10 and the surrounding area. Contact us to today to get a compe...
From £2,208
TJ RALPH BUILDINGS SERVICES is a trusted extension builder serving customers in TN10 and the surrounding area. Contact us to today to get a competi...
From £2,360
P & A CONSTRUCTION LIMITED is an established extension buildering business in TN10. We come highly recommended and provide competitive quotes for y...
From £1,520
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...
From £2,080
PADMANS BUILDERS is a trusted extension builder serving customers in TN10 and the surrounding area. Contact us to today to get a competitive quote ...
From £2,032
DS BUILDERS is an established extension buildering business in TN10. We come highly recommended and provide competitive quotes for your work.

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in TN10 it ranges from £1,520 (Magnoli Home based in TN2) to £2,440 (Montyandbo based in TN4).
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 TN10 by posting a job with HaMuch and we will send it to extension builders in TN10.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Tonbridge | £38 | £254 |
| Install An RSJ near Tunbridge Wells | £37 | £258 |
| Install An RSJ near Sevenoaks | £38 | £234 |
| Install An RSJ near Larkfield | £41 | £253 |
| Install An RSJ near Maidstone | £40 | £255 |
| Install An RSJ near Crowborough | £36 | £258 |
| Install An RSJ near East Grinstead | £37 | £259 |
| Install An RSJ near Rochester | £39 | £254 |
| Install An RSJ near Gravesend | £40 | £260 |
| Install An RSJ near Northfleet | £41 | £261 |
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 - £17,416

Two storey extension - £87,874

Build a timber frame extension - £25,916

Build a swimming pool - £80,916

Single storey extension - £53,320

Side return extension - £40,555

Install an RSJ - £2,116

Outbuilding - £9,916

Build a Mansard loft conversion - £51,916

Loft conversion - £32,963

Build a kitchen extension - £41,916

Hip to gable loft conversion - £41,916

Granny annexe - £86,916

Garden office - £9,916

Convert a Garage - £15,916

Garage - £18,416

Build a flat roof extension - £21,916

Build a dormer loft conversion - £41,916

Concrete foundations - £6,166

Convert a bungalow loft - £28,916

Convert a basement - £36,555