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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...
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...
From 2007 – 2015 David Rudelhoff (Founder and Director) was the Property Manager for a high profile, high net worth family. During that time, in ...
Relax... you have found a reliable extension builder in Egham. K & J Builders & Decorators is a friendly and reliable company based in Egham who co...
Experienced extension builder ready to quote for your work. A L King Services is the best extension builder in Egham. No obligation free quotes and...
ASAP Roofing & Exterior Maintenance is a trusted extension builder serving customers in Egham and the surrounding area. Contact us to today to get ...
Ani Mokashi is an established and experienced local extension builder in Egham. Please contact us for a free, no obligation quote and competitive r...
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 Egham and the surrounding area. Contact us to today to get a competitive quote fo...
Kendall Construction is an established and experienced local extension builder in Egham. Please contact us for a free, no obligation quote and comp...

Building a granny annexe ranges from £86,920 (Lp Townsend Brickwork based in SL2) to £87,472 (K & J Builders & Decorators based in GU19), 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 Egham by posting a job with HaMuch. We will send it to extension builders in Egham who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Egham | £42 | £266 |
| Granny Annexe near Staines-upon-Thames | £42 | £269 |
| Granny Annexe near Windsor | £41 | £271 |
| Granny Annexe near Windsor & Maidenhead | £42 | £272 |
| Granny Annexe near Ascot | £41 | £276 |
| Granny Annexe near New Haw | £43 | £273 |
| Granny Annexe near Sunbury-on-Thames | £43 | £273 |
| Granny Annexe near Slough | £42 | £272 |
| Granny Annexe near Walton-on-Thames | £43 | £277 |
| Granny Annexe near Elmbridge | £44 | £278 |
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 - £17,794

Two storey extension - £88,442

Build a timber frame extension - £26,294

Build a swimming pool - £81,294

Single storey extension - £60,888

Side return extension - £44,812

Install an RSJ - £2,494

Outbuilding - £10,294

Build a Mansard loft conversion - £52,294

Loft conversion - £36,510

Build a kitchen extension - £42,294

Hip to gable loft conversion - £42,294

Granny annexe - £87,294

Garden office - £10,294

Convert a Garage - £16,294

Garage - £18,794

Build a flat roof extension - £22,294

Build a dormer loft conversion - £42,294

Concrete foundations - £6,544

Convert a bungalow loft - £29,294

Convert a basement - £40,812