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Select your affordable West Lancashire extension builder
In an unstable market house extensions are often the most viable option, helping you to get the most out of the space you have without the addition...
Need to find an Extension Builder near you for all your extension buildering work?
NJD Joinery provides a local, trusted extension builderi...
Trusted and professional extension builder in West Lancashire. Experienced in all extension buildering work and keeping within budget and on quote....
BTC Bernstef Ltd is an established extension buildering business in West Lancashire. We come highly recommended and provide competitive quotes for ...
Higher End Construction Limited is an established extension buildering business in West Lancashire. We come highly recommended and provide competit...
D P Construction Limited are here to help customers who need an Extension Builder in West Lancashire. We offer a competitive rate to complete all y...
Prestige Property Conversions Ltd is an established extension buildering business in West Lancashire. We come highly recommended and provide compet...
From £86,304
John Scarisbrick
Local reliable family business
Free estimates
Clean friendly service
From £86,968
In an unstable market house extensions are often the most viable option, helping you to get the most out of the space you have without the addition...

Building a granny annexe ranges from £86,272 (A.K.S based in L40) to £86,984 (JCR Construction based in WN6), 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 West Lancashire by posting a job with HaMuch. We will send it to extension builders in West Lancashire who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near West Lancashire | £28 | £203 |
| Granny Annexe near Ormskirk | £29 | £206 |
| Granny Annexe near Skelmersdale | £28 | £210 |
| Granny Annexe near Maghull | £34 | £231 |
| Granny Annexe near Orrell | £29 | £214 |
| Granny Annexe near Kirkby | £31 | £224 |
| Granny Annexe near Southport | £27 | £198 |
| Granny Annexe near Formby | £28 | £206 |
| Granny Annexe near Sefton | £35 | £234 |
| Granny Annexe near Crosby | £35 | £234 |
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 - £17,169

Two storey extension - £87,503

Build a timber frame extension - £25,669

Build a swimming pool - £80,669

Single storey extension - £48,376

Side return extension - £37,774

Install an RSJ - £1,869

Outbuilding - £9,669

Build a Mansard loft conversion - £51,669

Loft conversion - £30,645

Build a kitchen extension - £41,669

Hip to gable loft conversion - £41,669

Granny annexe - £86,669

Garden office - £9,669

Convert a Garage - £15,669

Garage - £18,169

Build a flat roof extension - £21,669

Build a dormer loft conversion - £41,669

Concrete foundations - £5,919

Convert a bungalow loft - £28,669

Convert a basement - £33,774