From £2,280
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...
From £2,144
Top Form Construction are here to help customers who need an Extension Builder in ME5. We offer a competitive rate to complete all your extension b...
From £2,120
DG Building Services Kent Limited is an established and experienced local extension builder in ME5. Please contact us for a free, no obligation quo...
From £2,400
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,064
G J Roofing Services is an established and experienced local extension builder in ME5. Please contact us for a free, no obligation quote and compet...
From £2,160
M K Builders Medway Ltd is an established extension buildering business in ME5. We come highly recommended and provide competitive quotes for your ...
From £2,176
Freeman V & Co are here to help customers who need an Extension Builder in ME5. We offer a competitive rate to complete all your extension builderi...
From £1,976
Relax... you have found a reliable extension builder in ME5. Carey Property Development Ltd is a friendly and reliable company based in ME5 who con...
From £2,104
Zeppelin Construction Ltd is a construction company based in Gillingham, Kent. We offer a wide range of construction services to both domestic and ...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in ME5 it ranges from £1,976 (Carey Property Development Ltd based in ME1) to £2,624 (Des Durant General Building based in ME5).
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 ME5 by posting a job with HaMuch and we will send it to extension builders in ME5.
"RSJ installation, 203/203/46 beam length 5150mm, also digging concrete pad 900x900x 600 deep for site support post. For more information please get in touch." - RAINHAM
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Rochester | £34 | £220 |
| Install An RSJ near Chatham | £34 | £220 |
| Install An RSJ near Gillingham | £34 | £219 |
| Install An RSJ near Larkfield | £36 | £224 |
| Install An RSJ near Maidstone | £36 | £226 |
| Install An RSJ near Gravesend | £35 | £227 |
| Install An RSJ near Sittingbourne | £31 | £217 |
| Install An RSJ near Northfleet | £35 | £227 |
| Install An RSJ near Canvey Island | £34 | £224 |
| Install An RSJ near Stanford-le-Hope | £35 | £222 |
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 - £17,505

Two storey extension - £88,007

Build a timber frame extension - £26,005

Build a swimming pool - £81,005

Single storey extension - £55,096

Side return extension - £41,554

Install an RSJ - £2,205

Outbuilding - £10,005

Build a Mansard loft conversion - £52,005

Loft conversion - £33,795

Build a kitchen extension - £42,005

Hip to gable loft conversion - £42,005

Granny annexe - £87,005

Garden office - £10,005

Convert a Garage - £16,005

Garage - £18,505

Build a flat roof extension - £22,005

Build a dormer loft conversion - £42,005

Concrete foundations - £6,255

Convert a bungalow loft - £29,005

Convert a basement - £37,554