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Russell Worcester
R & R Roofing Guildford are here to help customers who need an Extension Builder in Knaphill. We offer a competitive rate to complete all your exte...
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 Knaphill. K & J Builders & Decorators is a friendly and reliable company based in Knaphill ...
Kendall Construction is an established and experienced local extension builder in Knaphill. Please contact us for a free, no obligation quote and c...
Need to find an Extension Builder near you for all your extension buildering work?
Chim Me Sweep Chim Me Build provides a local, trusted ex...
Relax... you have found a reliable extension builder in Knaphill. DILCONSI CONSTRUCTION is a friendly and reliable company based in Knaphill who co...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
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...
Need to find an Extension Builder near you for all your extension buildering work?
GS Wood Building Services provides a local, trusted exte...
Trusted and professional extension builder in Knaphill. Experienced in all extension buildering work and keeping within budget and on quote. Speedy...

Building a granny annexe ranges from £86,760 (We Fix & Upkeep Ltd based in KT16) 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 Knaphill by posting a job with HaMuch. We will send it to extension builders in Knaphill who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Woking | £43 | £277 |
| Granny Annexe near New Haw | £43 | £273 |
| Granny Annexe near Guildford | £53 | £298 |
| Granny Annexe near Ascot | £41 | £276 |
| Granny Annexe near Camberley | £40 | £268 |
| Granny Annexe near Ash Vale | £41 | £277 |
| Granny Annexe near Egham | £42 | £266 |
| Granny Annexe near Farnborough | £41 | £272 |
| Granny Annexe near Staines-upon-Thames | £42 | £269 |
| Granny Annexe near Walton-on-Thames | £43 | £277 |
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 - £17,634

Two storey extension - £88,202

Build a timber frame extension - £26,134

Build a swimming pool - £81,134

Single storey extension - £57,688

Side return extension - £43,012

Install an RSJ - £2,334

Outbuilding - £10,134

Build a Mansard loft conversion - £52,134

Loft conversion - £35,010

Build a kitchen extension - £42,134

Hip to gable loft conversion - £42,134

Granny annexe - £87,134

Garden office - £10,134

Convert a Garage - £16,134

Garage - £18,634

Build a flat roof extension - £22,134

Build a dormer loft conversion - £42,134

Concrete foundations - £6,384

Convert a bungalow loft - £29,134

Convert a basement - £39,012