Brian
Prestige Build Services LTD is a trusted extension builder serving customers in SN2 and the surrounding area. Contact us to today to get a competit...
Jaroslaw Garbacz
MJ solutions is an established and experienced local extension builder in SN2. Please contact us for a free, no obligation quote and competitive r...
Tom Dunn
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
John Howell
MR HOWELL are here to help customers who need an Extension Builder in SN2. We offer a competitive rate to complete all your extension buildering jo...
A D BUILDING SERVICES T/A is a trusted extension builder serving customers in SN2 and the surrounding area. Contact us to today to get a competitiv...
We have a skilled and dedicated team of professional tradesmen to carry out all your requirements. Whether you are looking to build, extend or upgr...
Bob Watts
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
CORE CONSTRUCTION is an established extension buildering business in SN2. We come highly recommended and provide competitive quotes for your work.<...
ABC Builders is a trusted extension builder serving customers in SN2 and the surrounding area. Contact us to today to get a competitive quote for e...
Relax... you have found a reliable extension builder in SN2. Highworth Felt Roofing Limited is a friendly and reliable company based in SN2 who con...

Building a granny annexe ranges from £86,456 (Watts Builders based in SN25) to £87,152 (Prestige Build Services LTD based in SN5), 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 SN2 by posting a job with HaMuch. We will send it to extension builders in SN2 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Stratton St Margaret | £32 | £238 |
| Granny Annexe near Swindon | £31 | £238 |
| Granny Annexe near Thamesdown | £31 | £239 |
| Granny Annexe near Vale of White Horse | £36 | £271 |
| Granny Annexe near Calne | £29 | £225 |
| Granny Annexe near West Wiltshire | £32 | £242 |
| Granny Annexe near North Wiltshire | £32 | £242 |
| Granny Annexe near Devizes | £32 | £242 |
| Granny Annexe near Witney | £32 | £244 |
| Granny Annexe near Chippenham | £34 | £258 |
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 - £17,334

Two storey extension - £87,750

Build a timber frame extension - £25,834

Build a swimming pool - £80,834

Single storey extension - £51,672

Side return extension - £39,628

Install an RSJ - £2,034

Outbuilding - £9,834

Build a Mansard loft conversion - £51,834

Loft conversion - £32,190

Build a kitchen extension - £41,834

Hip to gable loft conversion - £41,834

Granny annexe - £86,834

Garden office - £9,834

Convert a Garage - £15,834

Garage - £18,334

Build a flat roof extension - £21,834

Build a dormer loft conversion - £41,834

Concrete foundations - £6,084

Convert a bungalow loft - £28,834

Convert a basement - £35,628