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Chris Czerwinski
About us: Buildmac Ltd is a well-established, trustworthy, reliable and professional business based in High Wycombe, covering all surrounding areas...
HAMPTON CONSTRUCTION LTD are here to help customers who need an Extension Builder in Winchmore Hill. We offer a competitive rate to complete all yo...
Need to find an Extension Builder near you for all your extension buildering work?
6:59 Ltd provides a local, trusted extension buildering ...
Relax... you have found a reliable extension builder in Winchmore Hill. Building High Wycombe is a friendly and reliable company based in Winchmore...
Mitchell & Co Building & Renovations Ltd is an established extension buildering business in Winchmore Hill. We come highly recommended and provide ...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Be Illuminated are here to help customers who need an Extension Builder in Winchmore Hill. We offer a competitive rate to complete all your extensi...
Steve Knight Construction is a High Wycombe based Building Company with 38 years experience in all aspects of the Construction Industry. We are abl...
Need to find an Extension Builder near you for all your extension buildering work?
JAYEM BUILDING SERVICES LTD provides a local, trusted ex...
Our building services company Charts Project Management and Build has been helping customers in Buckinghamshire and the surrounding area by providi...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Winchmore Hill it ranges from £2,240 (Mitchell & Co Building & Renovations Ltd based in HP13) to £2,592 (Jesson ladscaping and construction based in hp15).
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 Winchmore Hill by posting a job with HaMuch and we will send it to extension builders in Winchmore Hill.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Chesham | £42 | £277 |
| Install An RSJ near Hazlemere | £40 | £272 |
| Install An RSJ near Gerrards Cross | £43 | £283 |
| Install An RSJ near Rickmansworth | £43 | £282 |
| Install An RSJ near Berkhamsted | £41 | £273 |
| Install An RSJ near Dacorum | £42 | £275 |
| Install An RSJ near High Wycombe | £39 | £272 |
| Install An RSJ near Hemel Hempstead | £43 | £276 |
| Install An RSJ near Wycombe | £40 | £271 |
| Install An RSJ near Watford | £43 | £280 |
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 - £17,762

Two storey extension - £88,392

Build a timber frame extension - £26,262

Build a swimming pool - £81,262

Single storey extension - £60,232

Side return extension - £44,443

Install an RSJ - £2,462

Outbuilding - £10,262

Build a Mansard loft conversion - £52,262

Loft conversion - £36,203

Build a kitchen extension - £42,262

Hip to gable loft conversion - £42,262

Granny annexe - £87,262

Garden office - £10,262

Convert a Garage - £16,262

Garage - £18,762

Build a flat roof extension - £22,262

Build a dormer loft conversion - £42,262

Concrete foundations - £6,512

Convert a bungalow loft - £29,262

Convert a basement - £40,443