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Select your affordable OX28 extension builder
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,120
Tom Grenshaw
Relax... you have found a reliable extension builder in OX28. TG Projects Ltd is a friendly and reliable company based in OX28 who consider no job ...
From £2,232
In an unstable market house extensions are often the most viable option, helping you to get the most out of the space you have without the addition...
From £2,232
Experienced extension builder ready to quote for your work. MILLHOUSE CONSTRUCTION LIMITED is the best extension builder in OX28. No obligation fre...
From £2,192
DH Building Services (Oxford) Ltd are a family-owned building firm based in Witney with over 30 years of experience providing professional, trustwo...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in OX28 it ranges from £1,912 (Reece Berry Building Contractor based in OX28) to £2,232 (Wychwood Building & Renovations Ltd based in OX28).
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 OX28 by posting a job with HaMuch and we will send it to extension builders in OX28.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Witney | £32 | £244 |
| Install An RSJ near Oxford | £38 | £270 |
| Install An RSJ near Vale of White Horse | £36 | £271 |
| Install An RSJ near Abingdon-on-Thames | £35 | £258 |
| Install An RSJ near Cherwell | £35 | £249 |
| Install An RSJ near Bicester | £35 | £249 |
| Install An RSJ near Didcot | £36 | £266 |
| Install An RSJ near Stratton St Margaret | £32 | £238 |
| Install An RSJ near Thamesdown | £31 | £239 |
| Install An RSJ near South Oxfordshire | £36 | £253 |
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 - £17,438

Two storey extension - £87,906

Build a timber frame extension - £25,938

Build a swimming pool - £80,938

Single storey extension - £53,752

Side return extension - £40,798

Install an RSJ - £2,138

Outbuilding - £9,938

Build a Mansard loft conversion - £51,938

Loft conversion - £33,165

Build a kitchen extension - £41,938

Hip to gable loft conversion - £41,938

Granny annexe - £86,938

Garden office - £9,938

Convert a Garage - £15,938

Garage - £18,438

Build a flat roof extension - £21,938

Build a dormer loft conversion - £41,938

Concrete foundations - £6,188

Convert a bungalow loft - £28,938

Convert a basement - £36,798