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Lee Townsend
Need to find an Extension Builder near you for all your extension buildering work?
Lp Townsend Brickwork provides a local, trusted extensio...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Jatinder Kahlon
Hi, I’m Jatinder. I’m a qualified electrician and gas safe registered professional with 10 years of experience in the trade. We specialise in l...
Need to find an Extension Builder near you for all your extension buildering work?
Slick Construction Ltd provides a local, trusted extensi...
From 2007 – 2015 David Rudelhoff (Founder and Director) was the Property Manager for a high profile, high net worth family. During that time, in ...
Ani Mokashi is an established and experienced local extension builder in Stanwell. Please contact us for a free, no obligation quote and competitiv...
Lead by designer Richard Gordon, GDC is a London and Berkshire based Design & Build firm with a vast amount of experience in both the residential a...
Dub Solutions is a trusted extension builder serving customers in Stanwell and the surrounding area. Contact us to today to get a competitive quote...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Image Design & Consultants is a trusted extension builder serving customers in Stanwell and the surrounding area. Contact us to today to get a comp...

Building a granny annexe ranges from £86,920 (Lp Townsend Brickwork based in SL2) to £87,440 (GDC Design & Build based in TW19), 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 Stanwell by posting a job with HaMuch. We will send it to extension builders in Stanwell who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Staines-upon-Thames | £42 | £269 |
| Granny Annexe near Egham | £42 | £266 |
| Granny Annexe near Sunbury-on-Thames | £43 | £273 |
| Granny Annexe near Windsor & Maidenhead | £42 | £272 |
| Granny Annexe near Windsor | £41 | £271 |
| Granny Annexe near Slough | £42 | £272 |
| Granny Annexe near Hounslow | £43 | £272 |
| Granny Annexe near New Haw | £43 | £273 |
| Granny Annexe near Walton-on-Thames | £43 | £277 |
| Granny Annexe near Hillingdon | £43 | £276 |
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 - £17,733

Two storey extension - £88,349

Build a timber frame extension - £26,233

Build a swimming pool - £81,233

Single storey extension - £59,656

Side return extension - £44,119

Install an RSJ - £2,433

Outbuilding - £10,233

Build a Mansard loft conversion - £52,233

Loft conversion - £35,933

Build a kitchen extension - £42,233

Hip to gable loft conversion - £42,233

Granny annexe - £87,233

Garden office - £10,233

Convert a Garage - £16,233

Garage - £18,733

Build a flat roof extension - £22,233

Build a dormer loft conversion - £42,233

Concrete foundations - £6,483

Convert a bungalow loft - £29,233

Convert a basement - £40,119