From £86,896
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
2 reviews
From £87,264
30 years experience In building . Plastering and colour renders
"Totally unreliable, takes your money and doesn't finish the job." - NORTH EAST,reviewed 04/10/17, L S
From £86,760
Trusted and professional extension builder in TS20. Experienced in all extension buildering work and keeping within budget and on quote. D & G Buil...
From £87,104
RAINTON CONSTRUCTION LTD is an established and experienced local extension builder in TS20. Please contact us for a free, no obligation quote and c...
From £86,744
Trusted and professional extension builder in TS20. Experienced in all extension buildering work and keeping within budget and on quote. Empire Bui...
From £87,912
Trusted General Builders in Durham From small fixes to full renovations, Radici Construction delivers quality workmanship, clear communication,...
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 £86,528
Experienced extension builder ready to quote for your work. KIETH GRAY ROOFING & BUILDING is the best extension builder in TS20. No obligation free...
From £86,808
Trusted and professional extension builder in TS20. Experienced in all extension buildering work and keeping within budget and on quote. DHB Builde...
From £86,832
LJP Roofing are here to help customers who need an Extension Builder in TS20. We offer a competitive rate to complete all your extension buildering...

Building a granny annexe ranges from £86,528 (KIETH GRAY ROOFING & BUILDING based in TS24) 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 TS20 by posting a job with HaMuch. We will send it to extension builders in TS20 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Stockton-on-Tees | £41 | £228 |
| Granny Annexe near Billingham | £44 | £242 |
| Granny Annexe near Middlesbrough | £43 | £236 |
| Granny Annexe near Thornaby-on-Tees | £42 | £231 |
| Granny Annexe near Ingleby Barwick | £41 | £228 |
| Granny Annexe near Eston | £42 | £241 |
| Granny Annexe near Hartlepool | £40 | £236 |
| Granny Annexe near Redcar & Cleveland | £43 | £254 |
| Granny Annexe near Redcar | £42 | £240 |
| Granny Annexe near Newton Aycliffe | £39 | £227 |
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 - £17,477

Two storey extension - £87,965

Build a timber frame extension - £25,977

Build a swimming pool - £80,977

Single storey extension - £54,536

Side return extension - £41,239

Install an RSJ - £2,177

Outbuilding - £9,977

Build a Mansard loft conversion - £51,977

Loft conversion - £33,533

Build a kitchen extension - £41,977

Hip to gable loft conversion - £41,977

Granny annexe - £86,977

Garden office - £9,977

Convert a Garage - £15,977

Garage - £18,477

Build a flat roof extension - £21,977

Build a dormer loft conversion - £41,977

Concrete foundations - £6,227

Convert a bungalow loft - £28,977

Convert a basement - £37,239