From £87,056
Kettering Mobile Sandblasting are here to help customers who need an Extension Builder in NN16. We offer a competitive rate to complete all your ex...
From £86,968
Relax... you have found a reliable extension builder in NN16. Jogga Construction is a friendly and reliable company based in NN16 who consider no j...
From £86,872
I Plowright Brickwork is an established extension buildering business in NN16. We come highly recommended and provide competitive quotes for your w...
From £86,760
Experienced extension builder ready to quote for your work. GARY TAYLOR BUILDERS LTD is the best extension builder in NN16. No obligation free quot...
From £86,728
Experienced house builder. Eco structures from Denmark as well as conventional build. Extensions. Bathrooms. Kitchens and support steels when requi...
From £86,472
Ascot Property Solutions Limited is an established and experienced local extension builder in NN16. Please contact us for a free, no obligation quo...
From £87,000
Experienced extension builder ready to quote for your work. Home Ryte Construction is the best extension builder in NN16. No obligation free quotes...
From £86,656
B GS GENERAL BUILDERS are here to help customers who need an Extension Builder in NN16. We offer a competitive rate to complete all your extension ...
From £87,176
Surrounding Villages Builders Limited are here to help customers who need an Extension Builder in NN16. We offer a competitive rate to complete all...
From £86,984
Hi im Shane & I am the managing director of sjs multitrade Ltd, I am a landscaper & builder of bespoke gardens and outdoor spaces created to my cus...

Building a granny annexe ranges from £86,472 (Ascot Property Solutions Limited based in NN17) to £87,176 (Surrounding Villages Builders Limited based in Nn14), 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 NN16 by posting a job with HaMuch. We will send it to extension builders in NN16 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Kettering | £34 | £237 |
| Granny Annexe near Corby | £30 | £214 |
| Granny Annexe near Wellingborough | £39 | £251 |
| Granny Annexe near Market Harborough | £31 | £217 |
| Granny Annexe near Rushden | £34 | £231 |
| Granny Annexe near Northampton | £35 | £239 |
| Granny Annexe near Stamford | £35 | £248 |
| Granny Annexe near Huntingdonshire | £36 | £290 |
| Granny Annexe near Wigston | £28 | £214 |
| Granny Annexe near South Bedfordshire | £45 | £278 |
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 - £17,367

Two storey extension - £87,801

Build a timber frame extension - £25,867

Build a swimming pool - £80,867

Single storey extension - £52,344

Side return extension - £40,006

Install an RSJ - £2,067

Outbuilding - £9,867

Build a Mansard loft conversion - £51,867

Loft conversion - £32,505

Build a kitchen extension - £41,867

Hip to gable loft conversion - £41,867

Granny annexe - £86,867

Garden office - £9,867

Convert a Garage - £15,867

Garage - £18,367

Build a flat roof extension - £21,867

Build a dormer loft conversion - £41,867

Concrete foundations - £6,117

Convert a bungalow loft - £28,867

Convert a basement - £36,006