John Young
Broadstairs, CT10
Osprey Property Repairs is a trusted extension builder serving customers in Broadstairs and the surrounding area. Contact us to today to get a com...
Brendan Healy
All building work , all hoyse maintenance. House extension and refurbishment works.
At Wells & Co we offer a comprehensive building service. We specialise in Period properties, bespoke renovations and steel fabrication.Along with o...
Christian Builders Margate Ltd is a multi-service company founded by Nick Christian. We operate with a highly skilled team of designers, tradesmen,...
GDB CONSTRUCTION is a trusted extension builder serving customers in Broadstairs and the surrounding area. Contact us to today to get a competitive...
Festim Kastrati
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...
Need to find an Extension Builder near you for all your extension buildering work?
Bespoke building projects provides a local, trusted exte...
From £87,032
Jordan Pink
Monarch Builders South East Ltd is an established and experienced local extension builder in Broadstairs. Please contact us for a free, no obligati...
From £86,928
Teekay solutions Limited is an established and experienced local extension builder in Broadstairs. Please contact us for a free, no obligation quot...
From £86,632
Design – our highly experienced design team can help you visualise your dream outcomes, working sympathetically with your space to find the perfe...

Building a granny annexe ranges from £86,312 (B H G M Ltd based in CT7) to £87,032 (Monarch Builders South East Ltd based in CT9), 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 Broadstairs by posting a job with HaMuch. We will send it to extension builders in Broadstairs 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 | £208 |
| 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 - £17,193

Two storey extension - £87,539

Build a timber frame extension - £25,693

Build a swimming pool - £80,693

Single storey extension - £48,856

Side return extension - £38,044

Install an RSJ - £1,893

Outbuilding - £9,693

Build a Mansard loft conversion - £51,693

Loft conversion - £30,870

Build a kitchen extension - £41,693

Hip to gable loft conversion - £41,693

Granny annexe - £86,693

Garden office - £9,693

Convert a Garage - £15,693

Garage - £18,193

Build a flat roof extension - £21,693

Build a dormer loft conversion - £41,693

Concrete foundations - £5,943

Convert a bungalow loft - £28,693

Convert a basement - £34,044