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 £2,160
Gillingham, ME7
Need to find an Extension Builder near you for all your extension buildering work?
McCready's Lofts & Refurbishments provides a local, trus...
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 ...
From £2,160
M K Builders Medway Ltd is an established extension buildering business in Gillingham. We come highly recommended and provide competitive quotes fo...
From £2,144
Top Form Construction are here to help customers who need an Extension Builder in Gillingham. We offer a competitive rate to complete all your exte...
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 £2,176
Freeman V & Co are here to help customers who need an Extension Builder in Gillingham. We offer a competitive rate to complete all your extension b...
From £2,120
Gillingham, ME7
DG Building Services Kent Limited is an established and experienced local extension builder in Gillingham. Please contact us for a free, no obligat...
From £2,064
G J Roofing Services is an established and experienced local extension builder in Gillingham. Please contact us for a free, no obligation quote and...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Gillingham it ranges from £2,064 (G J Roofing Services 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 Gillingham by posting a job with HaMuch and we will send it to extension builders in Gillingham.
"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, job posted 01/01/70
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Gillingham | £39 | £253 |
| Install An RSJ near Chatham | £39 | £254 |
| Install An RSJ near Rochester | £39 | £254 |
| Install An RSJ near Larkfield | £41 | £253 |
| Install An RSJ near Maidstone | £40 | £255 |
| Install An RSJ near Gravesend | £40 | £260 |
| Install An RSJ near Sittingbourne | £35 | £246 |
| Install An RSJ near Northfleet | £41 | £261 |
| Install An RSJ near Canvey Island | £39 | £256 |
| Install An RSJ near Stanford-le-Hope | £40 | £254 |
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 - £17,523

Two storey extension - £88,035

Build a timber frame extension - £26,023

Build a swimming pool - £81,023

Single storey extension - £55,464

Side return extension - £41,761

Install an RSJ - £2,223

Outbuilding - £10,023

Build a Mansard loft conversion - £52,023

Loft conversion - £33,968

Build a kitchen extension - £42,023

Hip to gable loft conversion - £42,023

Granny annexe - £87,023

Garden office - £10,023

Convert a Garage - £16,023

Garage - £18,523

Build a flat roof extension - £22,023

Build a dormer loft conversion - £42,023

Concrete foundations - £6,273

Convert a bungalow loft - £29,023

Convert a basement - £37,761