From £87,336
Leatherhead, KT23
Hallmark Construction and Development Ltd are here to help customers who need an Extension Builder in KT23. We offer a competitive rate to complete...
From £87,400
Please visit our web site at for full detailed photos of previous projects and clients testimonials.
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From £87,368
Trusted and professional extension builder in KT23. Experienced in all extension buildering work and keeping within budget and on quote. St Peter T...
From £87,128
Need an Extension Builder in KT23? Albany Roofing & Guttering has been helping local clients (10 mile radius) with their extension buildering jobs ...
From £87,352
Trusted and professional extension builder in KT23. Experienced in all extension buildering work and keeping within budget and on quote. D HANSFORD...
From £87,600
Drytech Roofing Contractors Ltd is an established extension buildering business in KT23. We come highly recommended and provide competitive quotes ...
From £87,272
Need to find an Extension Builder near you for all your extension buildering work?
Living Oak provides a local, trusted extension builderin...
From £87,344
Relax... you have found a reliable extension builder in KT23. NEWLAND BUILDING SERVICES is a friendly and reliable company based in KT23 who consid...
From £87,144
Experienced extension builder ready to quote for your work. Charybdis Developments Ltd is the best extension builder in KT23. No obligation free qu...
From £87,208
Relax... you have found a reliable extension builder in KT23. Avbase Building Services Ltd is a friendly and reliable company based in KT23 who con...

Building a granny annexe ranges from £87,128 (Albany Roofing & Guttering based in KT22) to £87,600 (Drytech Roofing Contractors Ltd based in KT22), 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 KT23 by posting a job with HaMuch. We will send it to extension builders in KT23 who will be happy to help you.
| Borough in London |
|---|
| Granny Annexe in The Bookhams |
| Granny Annexe in Oxshott |
| Granny Annexe in East Horsley |
| Granny Annexe in Cobham |
| Granny Annexe in Leatherhead |
| Granny Annexe in Dorking |
| Granny Annexe in Brockham |
| Granny Annexe in Epsom |
| Granny Annexe in Esher |
| Granny Annexe in Tadworth |
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 - £17,815

Two storey extension - £88,473

Build a timber frame extension - £26,315

Build a swimming pool - £81,315

Single storey extension - £61,304

Side return extension - £45,046

Install an RSJ - £2,515

Outbuilding - £10,315

Build a Mansard loft conversion - £52,315

Loft conversion - £36,705

Build a kitchen extension - £42,315

Hip to gable loft conversion - £42,315

Granny annexe - £87,315

Garden office - £10,315

Convert a Garage - £16,315

Garage - £18,815

Build a flat roof extension - £22,315

Build a dormer loft conversion - £42,315

Concrete foundations - £6,565

Convert a bungalow loft - £29,315

Convert a basement - £41,046