From £86,472
Trusted and professional extension builder in Sefton. Experienced in all extension buildering work and keeping within budget and on quote. Jones La...
From £86,672
J.M.C Building Services is a trusted extension builder serving customers in Sefton and the surrounding area. Contact us to today to get a competiti...
From £86,976
Nathan Thomas Plumbing is an established extension buildering business in Sefton. We come highly recommended and provide competitive quotes for you...
From £86,720
Conway Construction Ltd is an established extension buildering business in Sefton. We come highly recommended and provide competitive quotes for yo...
From £86,608
Relax... you have found a reliable extension builder in Sefton. R A C Gas is a friendly and reliable company based in Sefton who consider no job as...
From £86,792
EBI BUILDING RENOVATIONS is a trusted extension builder serving customers in Sefton and the surrounding area. Contact us to today to get a competit...
From £86,688
Experienced extension builder ready to quote for your work. BURGHWOOD CONSTRUCTION LTD is the best extension builder in Sefton. No obligation free ...
From £86,768
Relax... you have found a reliable extension builder in Sefton. Crown Construction Lancs Ltd is a friendly and reliable company based in Sefton who...
From £86,528
Need an Extension Builder in Sefton? Darren Finney Builders has been helping local clients (20 mile radius) with their extension buildering jobs fo...
From £86,816
Need to find an Extension Builder near you for all your extension buildering work?
Lytham Driveways & Patios provides a local, trusted exte...

Building a granny annexe ranges from £86,472 (Jones Landscaping based in L30) to £86,976 (Nathan Thomas Plumbing based in L19), 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 Sefton by posting a job with HaMuch. We will send it to extension builders in Sefton who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Sefton | £33 | £219 |
| Granny Annexe near Crosby | £33 | £222 |
| Granny Annexe near Formby | £23 | £162 |
| Granny Annexe near Bootle | £32 | £223 |
| Granny Annexe near Maghull | £33 | £219 |
| Granny Annexe near Wallasey | £32 | £224 |
| Granny Annexe near Kirkby | £31 | £223 |
| Granny Annexe near Liverpool | £31 | £222 |
| Granny Annexe near Ormskirk | £29 | £206 |
| Granny Annexe near Birkenhead | £31 | £219 |
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 - £17,204

Two storey extension - £87,556

Build a timber frame extension - £25,704

Build a swimming pool - £80,704

Single storey extension - £49,080

Side return extension - £38,170

Install an RSJ - £1,904

Outbuilding - £9,704

Build a Mansard loft conversion - £51,704

Loft conversion - £30,975

Build a kitchen extension - £41,704

Hip to gable loft conversion - £41,704

Granny annexe - £86,704

Garden office - £9,704

Convert a Garage - £15,704

Garage - £18,204

Build a flat roof extension - £21,704

Build a dormer loft conversion - £41,704

Concrete foundations - £5,954

Convert a bungalow loft - £28,704

Convert a basement - £34,170