From £86,368
Need to find an Extension Builder near you for all your extension buildering work?
A-Pex Building provides a local, trusted extension build...
From £86,728
Osprey Property Repairs is a trusted extension builder serving customers in CT10 and the surrounding area. Contact us to today to get a competitiv...
From £86,312
All building work , all hoyse maintenance. House extension and refurbishment works.
From £86,056
35 years in the trade can Lay bricks plaster roofing wall and floor tiling
From £86,656
At Wells & Co we offer a comprehensive building service. We specialise in Period properties, bespoke renovations and steel fabrication.Along with o...
From £86,824
Christian Builders Margate Ltd is a multi-service company founded by Nick Christian. We operate with a highly skilled team of designers, tradesmen,...
From £86,552
Small family building business reliable friendly service and very high quality of works
From £86,632
GDB CONSTRUCTION is a trusted extension builder serving customers in CT10 and the surrounding area. Contact us to today to get a competitive quote ...
From £86,440
We been for almost 15 years in the building trade,
we are easy going and willing to work with our client and to archive the best r...
From £86,744
Need to find an Extension Builder near you for all your extension buildering work?
Bespoke building projects provides a local, trusted exte...

Building a granny annexe ranges from £86,056 (S MEGSON CONSTRUCTION based in CT5) to £86,824 (Christian Builders Margate Ltd based in CT12), 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 CT10 by posting a job with HaMuch. We will send it to extension builders in CT10 who will be happy to help you.
"Granny annexe" - THANET, job posted 05/07/25
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Broadstairs | £27 | £208 |
| Granny Annexe near Ramsgate | £27 | £208 |
| Granny Annexe near Margate | £27 | £208 |
| Granny Annexe near Thanet | £27 | £207 |
| Granny Annexe near Deal | £26 | £199 |
| Granny Annexe near Herne Bay | £28 | £213 |
| Granny Annexe near Canterbury | £31 | £232 |
| Granny Annexe near Dover | £29 | £226 |
| Granny Annexe near Whitstable | £28 | £214 |
| Granny Annexe near Folkestone | £31 | £233 |
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 - £17,031

Two storey extension - £87,297

Build a timber frame extension - £25,531

Build a swimming pool - £80,531

Single storey extension - £45,624

Side return extension - £36,226

Install an RSJ - £1,731

Outbuilding - £9,531

Build a Mansard loft conversion - £51,531

Loft conversion - £29,355

Build a kitchen extension - £41,531

Hip to gable loft conversion - £41,531

Granny annexe - £86,531

Garden office - £9,531

Convert a Garage - £15,531

Garage - £18,031

Build a flat roof extension - £21,531

Build a dormer loft conversion - £41,531

Concrete foundations - £5,781

Convert a bungalow loft - £28,531

Convert a basement - £32,226