Mandala Building Services is a family-owned design and build maintenance company, encompassing everything from residential refurbishment to large-s...
ALG Renovations is a well established, trustworthy, reliable and professional operation with over 17 years experience myself in the trade, base...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Ciaran Feeney
Need to find an Extension Builder near you for all your extension buildering work?
COMPLETE CIVIL ENGINEERING provides a local, trusted ext...
Chrysalis are here to help customers who need an Extension Builder in Oxhey. We offer a competitive rate to complete all your extension buildering ...
WHIPP CONSTRUCTION LTD is an established extension buildering business in Oxhey. We come highly recommended and provide competitive quotes for your...
C & A Contractors is a trusted extension builder serving customers in Oxhey and the surrounding area. Contact us to today to get a competitive quot...
J Wijayamohan
JJSR Construction Ltd is an established and experienced local extension builder in Oxhey. Please contact us for a free, no obligation quote and com...
Relax... you have found a reliable extension builder in Oxhey. PERFORMA CONSTRUCTION LIMITED is a friendly and reliable company based in Oxhey who ...
Volton Building & Paving is a trusted extension builder serving customers in Oxhey and the surrounding area. Contact us to today to get a competiti...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Oxhey it ranges from £2,200 (ALG Renovations based in HA4) to £2,712 (Mandala Building Services based in WD6).
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 Oxhey by posting a job with HaMuch and we will send it to extension builders in Oxhey.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Watford | £43 | £278 |
| Install An RSJ near Bushey | £42 | £276 |
| Install An RSJ near Rickmansworth | £42 | £278 |
| Install An RSJ near Harrow | £43 | £270 |
| Install An RSJ near Borehamwood | £42 | £271 |
| Install An RSJ near Hillingdon | £63 | £276 |
| Install An RSJ near Gerrards Cross | £43 | £282 |
| Install An RSJ near Brent Cross | £43 | £272 |
| Install An RSJ near High Barnet | £43 | £272 |
| Install An RSJ near St Albans | £63 | £289 |
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 - £17,715

Two storey extension - £88,323

Build a timber frame extension - £26,215

Build a swimming pool - £81,215

Single storey extension - £59,304

Side return extension - £43,921

Install an RSJ - £2,415

Outbuilding - £10,215

Build a Mansard loft conversion - £52,215

Loft conversion - £35,768

Build a kitchen extension - £42,215

Hip to gable loft conversion - £42,215

Granny annexe - £87,215

Garden office - £10,215

Convert a Garage - £16,215

Garage - £18,715

Build a flat roof extension - £22,215

Build a dormer loft conversion - £42,215

Concrete foundations - £6,465

Convert a bungalow loft - £29,215

Convert a basement - £39,921