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Chris Czerwinski
About us: Buildmac Ltd is a well-established, trustworthy, reliable and professional business based in High Wycombe, covering all surrounding areas...
Relax... you have found a reliable extension builder in Wycombe. ABC Associates STRUCTURES 4 U is a friendly and reliable company based in Wycombe ...
Need to find an Extension Builder near you for all your extension buildering work?
Loudwater Building Services provides a local, trusted ex...
Mitchell & Co Building & Renovations Ltd is an established extension buildering business in Wycombe. We come highly recommended and provide competi...
Relax... you have found a reliable extension builder in Wycombe. Building High Wycombe is a friendly and reliable company based in Wycombe who cons...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Steve Knight Construction is a High Wycombe based Building Company with 38 years experience in all aspects of the Construction Industry. We are abl...
GREENWORKS CONSTRUCTION is an established and experienced local extension builder in Wycombe. Please contact us for a free, no obligation quote and...
Need to find an Extension Builder near you for all your extension buildering work?
JAYEM BUILDING SERVICES LTD provides a local, trusted ex...
Our building services company Charts Project Management and Build has been helping customers in Buckinghamshire and the surrounding area by providi...

Building a granny annexe ranges from £87,032 (GREENWORKS CONSTRUCTION based in SL7) to £87,392 (Jesson ladscaping and construction based in hp15), 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 Wycombe by posting a job with HaMuch. We will send it to extension builders in Wycombe who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Wycombe | £40 | £271 |
| Granny Annexe near High Wycombe | £39 | £272 |
| Granny Annexe near Hazlemere | £40 | £272 |
| Granny Annexe near Maidenhead | £41 | £273 |
| Granny Annexe near Chesham | £42 | £277 |
| Granny Annexe near Gerrards Cross | £43 | £283 |
| Granny Annexe near South Oxfordshire | £36 | £253 |
| Granny Annexe near Aylesbury | £42 | £270 |
| Granny Annexe near Slough | £42 | £272 |
| Granny Annexe near Caversham | £38 | £265 |
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 - £17,704

Two storey extension - £88,306

Build a timber frame extension - £26,204

Build a swimming pool - £81,204

Single storey extension - £59,080

Side return extension - £43,795

Install an RSJ - £2,404

Outbuilding - £10,204

Build a Mansard loft conversion - £52,204

Loft conversion - £35,663

Build a kitchen extension - £42,204

Hip to gable loft conversion - £42,204

Granny annexe - £87,204

Garden office - £10,204

Convert a Garage - £16,204

Garage - £18,704

Build a flat roof extension - £22,204

Build a dormer loft conversion - £42,204

Concrete foundations - £6,454

Convert a bungalow loft - £29,204

Convert a basement - £39,795