From £87,232
If you are looking for a Kempston extension builder and you need something replaced, fitted, or fixed, contact Space Above Limited today. We are co...
From £87,248
Kempston, MK42
RS Plumbing and Heating is a trusted extension builder serving customers in Kempston and the surrounding area. Contact us to today to get a competi...
From £87,448
Relax... you have found a reliable extension builder in Kempston. Bench Mark Construction is a friendly and reliable company based in Kempston who ...
From £87,808
Kempston, MK42
Need to find an Extension Builder near you for all your extension buildering work?
A M Interiors provides a local, trusted extension builde...
From £86,936
Plumbing, painting exterior, interior, extensions, plastering, skiming, carpeting, Flooring, you can ask us ..
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 £87,320
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £86,952
Relax... you have found a reliable extension builder in Kempston. Dean Prichard Building Services is a friendly and reliable company based in Kemps...
From £87,224
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £87,040
Trusted and professional extension builder in Kempston. Experienced in all extension buildering work and keeping within budget and on quote. Langto...

Building a granny annexe ranges from £86,544 (A G Hicks Building Services based in NN3) to £87,808 (A M Interiors based in MK42), 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 Kempston by posting a job with HaMuch. We will send it to extension builders in Kempston who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Kempston | £44 | £273 |
| Granny Annexe near Bedford | £45 | £278 |
| Granny Annexe near South Bedfordshire | £45 | £278 |
| Granny Annexe near Ampthill | £38 | £258 |
| Granny Annexe near Mid Bedfordshire | £42 | £276 |
| Granny Annexe near Biggleswade | £41 | £268 |
| Granny Annexe near St Neots | £51 | £318 |
| Granny Annexe near Rushden | £34 | £231 |
| Granny Annexe near Milton Keynes | £39 | £263 |
| Granny Annexe near Bletchley | £39 | £265 |
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 - £17,675

Two storey extension - £88,263

Build a timber frame extension - £26,175

Build a swimming pool - £81,175

Single storey extension - £58,504

Side return extension - £43,471

Install an RSJ - £2,375

Outbuilding - £10,175

Build a Mansard loft conversion - £52,175

Loft conversion - £35,393

Build a kitchen extension - £42,175

Hip to gable loft conversion - £42,175

Granny annexe - £87,175

Garden office - £10,175

Convert a Garage - £16,175

Garage - £18,675

Build a flat roof extension - £22,175

Build a dormer loft conversion - £42,175

Concrete foundations - £6,425

Convert a bungalow loft - £29,175

Convert a basement - £39,471