From £17,284
Relax... you have found a reliable extension builder in Washington. ORILLA CONSTRUCTION SOLUTIONS is a friendly and reliable company based in Washi...
From £18,380
Washington, NE37
Established 1983 . For more info visit web site please . Worked in industry for over 40 years.
From £17,780
HST ENG LTD is an established extension buildering business in Washington. We come highly recommended and provide competitive quotes for your work....
From £17,348
Skyline Loft Conversions (NE) Ltd is an established and experienced local extension builder in Washington. Please contact us for a free, no obligat...
From £17,412
Our building services company Home Grown NE has been providing professional, trustworthy building services to customers throughout the North-East f...
From £16,540
Member since July 2020
I have over 40 years experience in the field of construction. Thank you and I hope I will be of service to you.
From £20,492
Trusted and professional extension builder in Washington. Experienced in all extension buildering work and keeping within budget and on quote. Davi...
From £17,692
Dave Ogle is an established and experienced local extension builder in Washington. Please contact us for a free, no obligation quote and competitiv...
From £17,332
Experienced extension builder ready to quote for your work. L F BUILDING & JOINERY is the best extension builder in Washington. No obligation free ...
From £17,436
Building Craft Ltd is an established extension buildering business in Washington. We come highly recommended and provide competitive quotes for you...

Underpinning ranges from £16,540 (OCC Construction based in NE10) to £20,492 (David Robertson builders based in Sr4), 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 Washington by posting a job with HaMuch and we will send it to extension builders in Washington.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Washington | £33 | £251 |
| Underpin A Building near Sunderland | £33 | £251 |
| Underpin A Building near Chester-le-Street | £35 | £242 |
| Underpin A Building near Gateshead | £33 | £234 |
| Underpin A Building near Jarrow | £34 | £261 |
| Underpin A Building near Hebburn | £34 | £244 |
| Underpin A Building near South Tyneside | £34 | £261 |
| Underpin A Building near Newcastle Upon Tyne | £33 | £233 |
| Underpin A Building near Wallsend | £34 | £242 |
| Underpin A Building near Stanley | £34 | £242 |
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 - £17,770

Two storey extension - £88,404

Build a timber frame extension - £26,270

Build a swimming pool - £81,270

Single storey extension - £60,392

Side return extension - £44,533

Install an RSJ - £2,470

Outbuilding - £10,270

Build a Mansard loft conversion - £52,270

Loft conversion - £36,278

Build a kitchen extension - £42,270

Hip to gable loft conversion - £42,270

Granny annexe - £87,270

Garden office - £10,270

Convert a Garage - £16,270

Garage - £18,770

Build a flat roof extension - £22,270

Build a dormer loft conversion - £42,270

Concrete foundations - £6,520

Convert a bungalow loft - £29,270

Convert a basement - £40,533