From £17,628
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,716
Need to find an Extension Builder near you for all your extension buildering work?
S DYKE BUILDING SERVICES LTD provides a local, trusted e...
From £17,884
Experienced extension builder ready to quote for your work. Ad Swadling Building is the best extension builder in RG5. No obligation free quotes an...
From £17,684
Experienced extension builder ready to quote for your work. IT CONSTRUCTION LIMITED is the best extension builder in RG5. No obligation free quotes...
From £17,444
NICHOLAS & SON BUILDERS LTD is an established extension buildering business in RG5. We come highly recommended and provide competitive quotes for y...
From £17,548
Berkshire Environmental Services has been renovating property in the Reading Berkshire area for over many years. Our client...
From £17,924
Our building services company Stean360 Ltd has 21 years of experience, helping customers in Berkshire, Hampshire, Oxfordshire and Surrey by providi...
From £17,540
Relax... you have found a reliable extension builder in RG5. J C LORD BUILDING PROJECTS is a friendly and reliable company based in RG5 who conside...
From £17,668
Relax... you have found a reliable extension builder in RG5. CLYBURN CONSTRUCTION LTD is a friendly and reliable company based in RG5 who consider ...

Underpinning ranges from £17,260 (Taylormade Driveways based in RG5) to £17,924 (Stean360 Ltd based in RG5), but the final cost will depend on the method of underpinning used, how much of your foundations need underpinning and where you live.
Comparing extension builders estimates for underpinning gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
Get quotes to underpin your home in RG5 by posting a job with HaMuch and we will send it to extension builders in RG5.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Woodley | £42 | £267 |
| Underpin A Building near Reading | £42 | £266 |
| Underpin A Building near Caversham | £38 | £266 |
| Underpin A Building near Wokingham | £41 | £280 |
| Underpin A Building near Bracknell Forest | £41 | £287 |
| Underpin A Building near Bracknell | £41 | £286 |
| Underpin A Building near Sandhurst | £41 | £283 |
| Underpin A Building near Maidenhead | £41 | £273 |
| Underpin A Building near Camberley | £41 | £283 |
| Underpin A Building near Ascot | £41 | £276 |
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 - £17,630

Two storey extension - £88,194

Build a timber frame extension - £26,130

Build a swimming pool - £81,130

Single storey extension - £57,592

Side return extension - £42,958

Install an RSJ - £2,330

Outbuilding - £10,130

Build a Mansard loft conversion - £52,130

Loft conversion - £34,965

Build a kitchen extension - £42,130

Hip to gable loft conversion - £42,130

Granny annexe - £87,130

Garden office - £10,130

Convert a Garage - £16,130

Garage - £18,630

Build a flat roof extension - £22,130

Build a dormer loft conversion - £42,130

Concrete foundations - £6,380

Convert a bungalow loft - £29,130

Convert a basement - £38,958