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Select your affordable L18 extension builder
Nathan Thomas
Nathan Thomas Plumbing is an established extension buildering business in L18. We come highly recommended and provide competitive quotes for your w...
J.M.C Building Services is a trusted extension builder serving customers in L18 and the surrounding area. Contact us to today to get a competitive ...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
J J Nuttall Specialist Roofing Ltd are here to help customers who need an Extension Builder in L18. We offer a competitive rate to complete all you...
Relax... you have found a reliable extension builder in L18. R Sargeant is a friendly and reliable company based in L18 who consider no job as too ...
Experienced extension builder ready to quote for your work. Oxygen Property Partners is the best extension builder in L18. No obligation free quot...
Experienced extension builder ready to quote for your work. Elevate Finishing is the best extension builder in L18. No obligation free quotes and m...
Art Henry's are here to help customers who need an Extension Builder in L18. We offer a competitive rate to complete all your extension buildering ...
Relax... you have found a reliable extension builder in L18. Hyst is a friendly and reliable company based in L18 who consider no job as too big or...
McBuild is a trusted extension builder serving customers in L18 and the surrounding area. Contact us to today to get a competitive quote for extens...

Building a granny annexe ranges from £86,672 (J.M.C Building Services based in L4) to £87,016 (Art Henry's based in L8), 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 L18 by posting a job with HaMuch. We will send it to extension builders in L18 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Liverpool | £31 | £222 |
| Granny Annexe near Huyton with Roby | £31 | £225 |
| Granny Annexe near Knowsley | £31 | £222 |
| Granny Annexe near Bebington | £31 | £222 |
| Granny Annexe near Birkenhead | £31 | £219 |
| Granny Annexe near Prescot | £31 | £223 |
| Granny Annexe near Wallasey | £32 | £224 |
| Granny Annexe near Bootle | £33 | £228 |
| Granny Annexe near Kirkby | £31 | £224 |
| Granny Annexe near Widnes | £31 | £220 |
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 - £17,306

Two storey extension - £87,708

Build a timber frame extension - £25,806

Build a swimming pool - £80,806

Single storey extension - £51,112

Side return extension - £39,313

Install an RSJ - £2,006

Outbuilding - £9,806

Build a Mansard loft conversion - £51,806

Loft conversion - £31,928

Build a kitchen extension - £41,806

Hip to gable loft conversion - £41,806

Granny annexe - £86,806

Garden office - £9,806

Convert a Garage - £15,806

Garage - £18,306

Build a flat roof extension - £21,806

Build a dormer loft conversion - £41,806

Concrete foundations - £6,056

Convert a bungalow loft - £28,806

Convert a basement - £35,313