From £87,136
Trusted and professional extension builder in SG19. Experienced in all extension buildering work and keeping within budget and on quote. J. WATSON ...
From £87,168
Relax... you have found a reliable extension builder in SG19. Imogen Jack is a friendly and reliable company based in SG19 who consider no job as t...
From £87,264
Relax... you have found a reliable extension builder in SG19. Applewood Design and Build Ltd is a friendly and reliable company based in SG19 who c...
From £87,144
A.S. OHM Electrics Ltd is a trusted extension builder serving customers in SG19 and the surrounding area. Contact us to today to get a competitive ...
From £87,192
TCL BUILDING SOLUTIONS LTD are here to help customers who need an Extension Builder in SG19. We offer a competitive rate to complete all your exten...
From £87,448
JP Building Limited are here to help customers who need an Extension Builder in SG19. We offer a competitive rate to complete all your extension bu...
From £87,216
M OLIVER BUILDING is an established and experienced local extension builder in SG19. Please contact us for a free, no obligation quote and competit...
From £86,848
Need an Extension Builder in SG19? R&J Building Services Ltd has been helping local clients (20 mile radius) with their extension buildering jobs f...
From £87,120
For more than 10 years, North Hertfordshire Construction LTD have been the name you can trust when it comes to building and development! We are kno...
From £87,312
Experienced extension builder ready to quote for your work. Bricklayers is the best extension builder in SG19. No obligation free quotes and many h...

Building a granny annexe ranges from £86,848 (R&J Building Services Ltd based in SG17) to £87,448 (JP Building Limited based in PE19), 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 SG19 by posting a job with HaMuch. We will send it to extension builders in SG19 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Biggleswade | £35 | £230 |
| Granny Annexe near St Neots | £42 | £256 |
| Granny Annexe near Bedford | £38 | £233 |
| Granny Annexe near South Bedfordshire | £38 | £233 |
| Granny Annexe near Kempston | £37 | £230 |
| Granny Annexe near Letchworth | £37 | £239 |
| Granny Annexe near South Cambridgeshire | £37 | £258 |
| Granny Annexe near North Hertfordshire | £37 | £239 |
| Granny Annexe near Ampthill | £31 | £214 |
| Granny Annexe near Mid Bedfordshire | £34 | £225 |
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 - £17,685

Two storey extension - £88,277

Build a timber frame extension - £26,185

Build a swimming pool - £81,185

Single storey extension - £58,696

Side return extension - £43,579

Install an RSJ - £2,385

Outbuilding - £10,185

Build a Mansard loft conversion - £52,185

Loft conversion - £35,483

Build a kitchen extension - £42,185

Hip to gable loft conversion - £42,185

Granny annexe - £87,185

Garden office - £10,185

Convert a Garage - £16,185

Garage - £18,685

Build a flat roof extension - £22,185

Build a dormer loft conversion - £42,185

Concrete foundations - £6,435

Convert a bungalow loft - £29,185

Convert a basement - £39,579