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Peter Gallagher
Experienced extension builder ready to quote for your work. P & P Building Services is the best extension builder in Crosby. No obligation free quo...
J.M.C Building Services is a trusted extension builder serving customers in Crosby and the surrounding area. Contact us to today to get a competiti...
Relax... you have found a reliable extension builder in Crosby. KM Building Services is a friendly and reliable company based in Crosby who conside...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Need an Extension Builder in Crosby? Bob the Builder has been helping local clients (20 mile radius) with their extension buildering jobs for many ...
Robuild - Waterwise is an established extension buildering business in Crosby. We come highly recommended and provide competitive quotes for your w...
Need to find an Extension Builder near you for all your extension buildering work?
S.L.P Property Maintenance provides a local, trusted ext...
Trusted and professional extension builder in Crosby. Experienced in all extension buildering work and keeping within budget and on quote. DW Brick...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Crosby, L23
BTC Bernstef Ltd is an established extension buildering business in Crosby. We come highly recommended and provide competitive quotes for your work...

Building a granny annexe ranges from £86,576 (BTC Bernstef Ltd based in L23) to £86,952 (DW Brickwork based in CH46), 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 Crosby by posting a job with HaMuch. We will send it to extension builders in Crosby who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Crosby | £35 | £234 |
| Granny Annexe near Sefton | £35 | £234 |
| Granny Annexe near Bootle | £33 | £228 |
| Granny Annexe near Maghull | £34 | £231 |
| Granny Annexe near Formby | £28 | £206 |
| Granny Annexe near Wallasey | £32 | £224 |
| Granny Annexe near Kirkby | £31 | £224 |
| Granny Annexe near Liverpool | £31 | £222 |
| Granny Annexe near Birkenhead | £31 | £219 |
| Granny Annexe near Ormskirk | £29 | £206 |
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 - £17,280

Two storey extension - £87,670

Build a timber frame extension - £25,780

Build a swimming pool - £80,780

Single storey extension - £50,600

Side return extension - £39,025

Install an RSJ - £1,980

Outbuilding - £9,780

Build a Mansard loft conversion - £51,780

Loft conversion - £31,688

Build a kitchen extension - £41,780

Hip to gable loft conversion - £41,780

Granny annexe - £86,780

Garden office - £9,780

Convert a Garage - £15,780

Garage - £18,280

Build a flat roof extension - £21,780

Build a dormer loft conversion - £41,780

Concrete foundations - £6,030

Convert a bungalow loft - £28,780

Convert a basement - £35,025