BTC Bernstef Ltd is an established extension buildering business in Formby. We come highly recommended and provide competitive quotes for your work...
Thomas Healey
Need an Extension Builder in Formby? T&T Building Contractors has been helping local clients (20 mile radius) with their extension buildering jobs ...
CJ Construction are here to help customers who need an Extension Builder in Formby. We offer a competitive rate to complete all your extension buil...
Relax... you have found a reliable extension builder in Formby. KM Building Services is a friendly and reliable company based in Formby who conside...
Looking for an Extension Builder near Formby for all your extension buildering jobs?
Evergreen Developments Nw Ltd pr...
Prestige Property Conversions Ltd is an established extension buildering business in Formby. We come highly recommended and provide competitive quo...
From £86,304
John Scarisbrick
Local reliable family business
Free estimates
Clean friendly service
From £86,672
KOR BUILDING SERVICES is an established and experienced local extension builder in Formby. Please contact us for a free, no obligation quote and co...
From £86,712
PARKFIELD CONSTRUCTION LTD is an established extension buildering business in Formby. We come highly recommended and provide competitive quotes for...

Building a granny annexe ranges from £85,032 (T&T Building Contractors based in L23) to £87,000 (Evergreen Developments Nw Ltd based in PR8), 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 Formby by posting a job with HaMuch. We will send it to extension builders in Formby who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Formby | £23 | £162 |
| Granny Annexe near Sefton | £33 | £221 |
| Granny Annexe near Crosby | £33 | £223 |
| Granny Annexe near Southport | £27 | £198 |
| Granny Annexe near Maghull | £33 | £220 |
| Granny Annexe near Ormskirk | £29 | £206 |
| Granny Annexe near Bootle | £32 | £224 |
| Granny Annexe near West Lancashire | £28 | £203 |
| Granny Annexe near Kirkby | £31 | £224 |
| Granny Annexe near Wallasey | £32 | £224 |
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 - £16,949

Two storey extension - £87,173

Build a timber frame extension - £25,449

Build a swimming pool - £80,449

Single storey extension - £43,976

Side return extension - £35,299

Install an RSJ - £1,649

Outbuilding - £9,449

Build a Mansard loft conversion - £51,449

Loft conversion - £28,583

Build a kitchen extension - £41,449

Hip to gable loft conversion - £41,449

Granny annexe - £86,449

Garden office - £9,449

Convert a Garage - £15,449

Garage - £17,949

Build a flat roof extension - £21,449

Build a dormer loft conversion - £41,449

Concrete foundations - £5,699

Convert a bungalow loft - £28,449

Convert a basement - £31,299