Need an Extension Builder in Halton? KMC Brickwork has been helping local clients (20 mile radius) with their extension buildering jobs for many ye...
Richie Crawley
Relax... you have found a reliable extension builder in Halton. R A C Gas is a friendly and reliable company based in Halton who consider no job as...
Need to find an Extension Builder near you for all your extension buildering work?
JOHN ROSS BUILDERS LTD provides a local, trusted extensi...
Relax... you have found a reliable extension builder in Halton. R Sargeant is a friendly and reliable company based in Halton who consider no job a...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Fixit Cheshire is an established and experienced local extension builder in Halton. Please contact us for a free, no obligation quote and competiti...
J.T.Construction is a trusted extension builder serving customers in Halton and the surrounding area. Contact us to today to get a competitive quot...
Get an Extension Builder in Halton who you can trust. National Plumbing and Heating provide friendly and reliable extension buildering services to ...
Mark Robinson
Trusted and professional extension builder in Halton. Experienced in all extension buildering work and keeping within budget and on quote. M L R Bu...
G. Finnigan Builders is an established extension buildering business in Halton. We come highly recommended and provide competitive quotes for your ...

Building a granny annexe ranges from £86,608 (R A C Gas based in WA7) to £86,992 (J.T.Construction based in WA5), 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 Halton by posting a job with HaMuch. We will send it to extension builders in Halton who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Halton | £31 | £220 |
| Granny Annexe near Widnes | £31 | £220 |
| Granny Annexe near Runcorn | £33 | £228 |
| Granny Annexe near Huyton with Roby | £31 | £225 |
| Granny Annexe near Warrington | £31 | £222 |
| Granny Annexe near Prescot | £31 | £223 |
| Granny Annexe near Knowsley | £31 | £222 |
| Granny Annexe near St Helens | £31 | £224 |
| Granny Annexe near Newton-le-Willows | £31 | £221 |
| Granny Annexe near Ellesmere Port | £31 | £214 |
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 - £17,265

Two storey extension - £87,647

Build a timber frame extension - £25,765

Build a swimming pool - £80,765

Single storey extension - £50,296

Side return extension - £38,854

Install an RSJ - £1,965

Outbuilding - £9,765

Build a Mansard loft conversion - £51,765

Loft conversion - £31,545

Build a kitchen extension - £41,765

Hip to gable loft conversion - £41,765

Granny annexe - £86,765

Garden office - £9,765

Convert a Garage - £15,765

Garage - £18,265

Build a flat roof extension - £21,765

Build a dormer loft conversion - £41,765

Concrete foundations - £6,015

Convert a bungalow loft - £28,765

Convert a basement - £34,854