From £86,472
Trusted and professional extension builder in Flint. Experienced in all extension buildering work and keeping within budget and on quote. Jones Lan...
From £86,672
J.M.C Building Services is a trusted extension builder serving customers in Flint and the surrounding area. Contact us to today to get a competitiv...
From £87,032
Tong Building & Joinery Ltd are here to help customers who need an Extension Builder in Flint. We offer a competitive rate to complete all your ext...
From £87,056
AJ Solutions is an established extension buildering business in Flint. We come highly recommended and provide competitive quotes for your work.
...From £86,976
Nathan Thomas Plumbing is an established extension buildering business in Flint. We come highly recommended and provide competitive quotes for your...
From £86,608
Relax... you have found a reliable extension builder in Flint. R A C Gas is a friendly and reliable company based in Flint who consider no job as t...
From £86,696
G P Roofing & Building Service is a trusted extension builder serving customers in Flint and the surrounding area. Contact us to today to get a com...
From £86,704
Need an Extension Builder in Flint? MIDDLETON CONSTRUCTION (NW)LTD has been helping local clients (20 mile radius) with their extension buildering ...
From £86,768
A WALL BUILDING CONTRACTOR are here to help customers who need an Extension Builder in Flint. We offer a competitive rate to complete all your exte...
From £86,584
Experienced extension builder ready to quote for your work. Matthew Hannigan Garage Doors is the best extension builder in Flint. No obligation fre...

Building a granny annexe ranges from £86,472 (Jones Landscaping based in L30) to £87,056 (AJ Solutions based in CH1), 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 Flint by posting a job with HaMuch. We will send it to extension builders in Flint who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Connah's Quay | £33 | £229 |
| Granny Annexe near Heswall | £30 | £213 |
| Granny Annexe near Flintshire | £33 | £224 |
| Granny Annexe near Hawarden | £33 | £228 |
| Granny Annexe near Bebington | £31 | £222 |
| Granny Annexe near Wirral | £31 | £219 |
| Granny Annexe near Vale Royal | £35 | £251 |
| Granny Annexe near Ellesmere Port | £31 | £214 |
| Granny Annexe near Birkenhead | £31 | £219 |
| Granny Annexe near Chester | £32 | £220 |
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 - £17,257

Two storey extension - £87,635

Build a timber frame extension - £25,757

Build a swimming pool - £80,757

Single storey extension - £50,136

Side return extension - £38,764

Install an RSJ - £1,957

Outbuilding - £9,757

Build a Mansard loft conversion - £51,757

Loft conversion - £31,470

Build a kitchen extension - £41,757

Hip to gable loft conversion - £41,757

Granny annexe - £86,757

Garden office - £9,757

Convert a Garage - £15,757

Garage - £18,257

Build a flat roof extension - £21,757

Build a dormer loft conversion - £41,757

Concrete foundations - £6,007

Convert a bungalow loft - £28,757

Convert a basement - £34,764