From £87,000
Wellingborough, NN8
Experienced extension builder ready to quote for your work. Home Ryte Construction is the best extension builder in Wellingborough. No obligation f...
From £88,392
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £86,984
Experienced extension builder ready to quote for your work. MINERAL STAR CONSTRUCTION LTD is the best extension builder in Wellingborough. No oblig...
From £86,960
Trusted and professional extension builder in Wellingborough. Experienced in all extension buildering work and keeping within budget and on quote. ...
From £86,624
Garden and Building Solutions is an established and experienced local extension builder in Wellingborough. Please contact us for a free, no obligat...
From £86,648
Need to find an Extension Builder near you for all your extension buildering work?
Shirley Ceramics provides a local, trusted extension bui...
From £87,040
Experienced extension builder ready to quote for your work. KMR CONSTRUCTION is the best extension builder in Wellingborough. No obligation free qu...
From £86,696
Experienced extension builder ready to quote for your work. L & D CONSTRUCTION SERVICE is the best extension builder in Wellingborough. No obligati...
From £86,544
Need to find an Extension Builder near you for all your extension buildering work?
A G Hicks Building Services provides a local, trusted ex...
From £86,912
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Building a granny annexe ranges from £86,544 (A G Hicks Building Services based in NN3) to £88,392 (STRANDOR ROOFING LTD based in NN6), 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 Wellingborough by posting a job with HaMuch. We will send it to extension builders in Wellingborough who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Wellingborough | £39 | £251 |
| Granny Annexe near Rushden | £34 | £231 |
| Granny Annexe near Kettering | £34 | £237 |
| Granny Annexe near Northampton | £35 | £239 |
| Granny Annexe near Corby | £30 | £214 |
| Granny Annexe near South Bedfordshire | £45 | £278 |
| Granny Annexe near Bedford | £45 | £278 |
| Granny Annexe near Market Harborough | £31 | £217 |
| Granny Annexe near Kempston | £44 | £273 |
| Granny Annexe near Milton Keynes | £39 | £263 |
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 - £17,480

Two storey extension - £87,970

Build a timber frame extension - £25,980

Build a swimming pool - £80,980

Single storey extension - £54,600

Side return extension - £41,275

Install an RSJ - £2,180

Outbuilding - £9,980

Build a Mansard loft conversion - £51,980

Loft conversion - £33,563

Build a kitchen extension - £41,980

Hip to gable loft conversion - £41,980

Granny annexe - £86,980

Garden office - £9,980

Convert a Garage - £15,980

Garage - £18,480

Build a flat roof extension - £21,980

Build a dormer loft conversion - £41,980

Concrete foundations - £6,230

Convert a bungalow loft - £28,980

Convert a basement - £37,275