Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Trusted and professional extension builder in Windlesham. Experienced in all extension buildering work and keeping within budget and on quote. Spee...
Holt Builders Ltd are here to help customers who need an Extension Builder in Windlesham. We offer a competitive rate to complete all your extensio...
ADO Builders is a trusted extension builder serving customers in Windlesham and the surrounding area. Contact us to today to get a competitive quot...
EGPM LTD are here to help customers who need an Extension Builder in Windlesham. We offer a competitive rate to complete all your extension builder...
Ani Mokashi is an established and experienced local extension builder in Windlesham. Please contact us for a free, no obligation quote and competit...
Need to find an Extension Builder near you for all your extension buildering work?
GS Wood Building Services provides a local, trusted exte...
Cosmin-Adrian Aporcariti
We are a company based in South London, with a strong will to work and to do the best job possible every tine we start a job (big or small) because...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Dub Solutions is a trusted extension builder serving customers in Windlesham and the surrounding area. Contact us to today to get a competitive quo...

Building a granny annexe ranges from £86,760 (We Fix & Upkeep Ltd based in KT16) to £87,360 (Ani Mokashi based in SL4), 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 Windlesham by posting a job with HaMuch. We will send it to extension builders in Windlesham who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Ascot | £41 | £276 |
| Granny Annexe near Camberley | £41 | £282 |
| Granny Annexe near Bracknell | £41 | £285 |
| Granny Annexe near Bracknell Forest | £41 | £287 |
| Granny Annexe near Sandhurst | £41 | £283 |
| Granny Annexe near Woking | £43 | £277 |
| Granny Annexe near Egham | £42 | £266 |
| Granny Annexe near Farnborough | £41 | £272 |
| Granny Annexe near New Haw | £43 | £273 |
| Granny Annexe near Staines-upon-Thames | £42 | £269 |
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 - £17,536

Two storey extension - £88,054

Build a timber frame extension - £26,036

Build a swimming pool - £81,036

Single storey extension - £55,720

Side return extension - £41,905

Install an RSJ - £2,236

Outbuilding - £10,036

Build a Mansard loft conversion - £52,036

Loft conversion - £34,088

Build a kitchen extension - £42,036

Hip to gable loft conversion - £42,036

Granny annexe - £87,036

Garden office - £10,036

Convert a Garage - £16,036

Garage - £18,536

Build a flat roof extension - £22,036

Build a dormer loft conversion - £42,036

Concrete foundations - £6,286

Convert a bungalow loft - £29,036

Convert a basement - £37,905