From £17,596
Need an Extension Builder in Northumberland? D TAIT BUILDING & PROP REPAIRS has been helping local clients (20 mile radius) with their extension bu...
From £17,308
ANDREW HUNTER BUILDING SERVICES is an established and experienced local extension builder in Northumberland. Please contact us for a free, no oblig...
From £17,668
Trusted and professional extension builder in Northumberland. Experienced in all extension buildering work and keeping within budget and on quote. ...
From £17,348
Trusted and professional extension builder in Northumberland. Experienced in all extension buildering work and keeping within budget and on quote. ...
From £17,348
JT Roofing is an established and experienced local extension builder in Northumberland. Please contact us for a free, no obligation quote and compe...
From £17,220
Relax... you have found a reliable extension builder in Northumberland. J3 BUILDING SOLUTIONS LTD is a friendly and reliable company based in North...
From £17,468
Trusted and professional extension builder in Northumberland. Experienced in all extension buildering work and keeping within budget and on quote. ...
From £17,388
Relax... you have found a reliable extension builder in Northumberland. SB Building Solutions is a friendly and reliable company based in Northumbe...
From £17,492
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,436
D H P Builders is an established extension buildering business in Northumberland. We come highly recommended and provide competitive quotes for you...

Underpinning ranges from £17,220 (J3 BUILDING SOLUTIONS LTD based in NE61) to £17,668 (B & R Building Services based in NE5), 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 Northumberland by posting a job with HaMuch and we will send it to extension builders in Northumberland.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Newcastle Upon Tyne | £33 | £235 |
| Underpin A Building near Longbenton | £33 | £233 |
| Underpin A Building near Cramlington | £36 | £256 |
| Underpin A Building near Gateshead | £33 | £236 |
| Underpin A Building near Consett | £33 | £241 |
| Underpin A Building near Stanley | £34 | £242 |
| Underpin A Building near Wallsend | £34 | £245 |
| Underpin A Building near Hebburn | £34 | £246 |
| Underpin A Building near Blyth | £42 | £288 |
| Underpin A Building near Whitley Bay | £38 | £268 |
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 - £17,427

Two storey extension - £87,891

Build a timber frame extension - £25,927

Build a swimming pool - £80,927

Single storey extension - £53,544

Side return extension - £40,681

Install an RSJ - £2,127

Outbuilding - £9,927

Build a Mansard loft conversion - £51,927

Loft conversion - £33,068

Build a kitchen extension - £41,927

Hip to gable loft conversion - £41,927

Granny annexe - £86,927

Garden office - £9,927

Convert a Garage - £15,927

Garage - £18,427

Build a flat roof extension - £21,927

Build a dormer loft conversion - £41,927

Concrete foundations - £6,177

Convert a bungalow loft - £28,927

Convert a basement - £36,681