From £87,040
Need to find an Extension Builder near you for all your extension buildering work?
SBC (BUILDERS) LIMITED provides a local, trusted extensi...
From £87,064
Croft-Hill Building & Joinery is a trusted extension builder serving customers in Crook & Willington and the surrounding area. Contact us to today ...
From £86,968
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £86,920
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £86,760
Need an Extension Builder in Crook & Willington? K & J Property has been helping local clients (20 mile radius) with their extension buildering job...
From £87,000
Relax... you have found a reliable extension builder in Crook & Willington. AA Paving is a friendly and reliable company based in Crook & Willingto...
From £86,736
Need an Extension Builder in Crook & Willington? Northern Roofline Solutions has been helping local clients (20 mile radius) with their extension b...
From £87,912
Trusted General Builders in Durham From small fixes to full renovations, Radici Construction delivers quality workmanship, clear communication,...
From £86,880
J.collinson is an established and experienced local extension builder in Crook & Willington. Please contact us for a free, no obligation quote and ...

Building a granny annexe ranges from £86,736 (Northern Roofline Solutions based in DL14) to £87,912 (Radici Construction North East Ltd based in DH1), but these are just estimates that can help give you an idea of who will be better value in your area.
The best thing to do is to get quotes to build a granny annexe in Crook & Willington by posting a job with HaMuch. We will send it to extension builders in Crook & Willington who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Bishop Auckland | £34 | £218 |
| Granny Annexe near Spennymoor | £33 | £220 |
| Granny Annexe near Durham | £42 | £236 |
| Granny Annexe near Newton Aycliffe | £34 | £200 |
| Granny Annexe near Consett | £28 | £202 |
| Granny Annexe near Stanley | £29 | £206 |
| Granny Annexe near Chester-le-Street | £31 | £213 |
| Granny Annexe near Darlington | £53 | £194 |
| Granny Annexe near Washington | £29 | £221 |
| Granny Annexe near Sunderland | £29 | £220 |
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 - £17,554

Two storey extension - £88,082

Build a timber frame extension - £26,054

Build a swimming pool - £81,054

Single storey extension - £56,088

Side return extension - £42,112

Install an RSJ - £2,254

Outbuilding - £10,054

Build a Mansard loft conversion - £52,054

Loft conversion - £34,260

Build a kitchen extension - £42,054

Hip to gable loft conversion - £42,054

Granny annexe - £87,054

Garden office - £10,054

Convert a Garage - £16,054

Garage - £18,554

Build a flat roof extension - £22,054

Build a dormer loft conversion - £42,054

Concrete foundations - £6,304

Convert a bungalow loft - £29,054

Convert a basement - £38,112