From £86,976
Nathan Thomas Plumbing is an established extension buildering business in Grassendale. We come highly recommended and provide competitive quotes fo...
From £87,088
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £86,872
Experienced extension builder ready to quote for your work. Elevate Finishing is the best extension builder in Grassendale. No obligation free quot...
From £86,904
Relax... you have found a reliable extension builder in Grassendale. PENNY LANE BUILDERS LTD is a friendly and reliable company based in Grassendal...
From £86,816
DK Building is an established extension buildering business in Grassendale. We come highly recommended and provide competitive quotes for your work...
From £86,736
Relax... you have found a reliable extension builder in Grassendale. R Sargeant is a friendly and reliable company based in Grassendale who conside...
From £86,800
Experienced extension builder ready to quote for your work. Oxygen Property Partners is the best extension builder in Grassendale. No obligation f...
From £86,736
Brilliant Homes is an established and experienced local extension builder in Grassendale. Please contact us for a free, no obligation quote and com...
From £87,016
Art Henry's are here to help customers who need an Extension Builder in Grassendale. We offer a competitive rate to complete all your extension bui...
From £86,752
Need an Extension Builder in Grassendale? ARGYLE BUILDING AND MAINTENANCE has been helping local clients (20 mile radius) with their extension buil...

Building a granny annexe ranges from £86,736 (R Sargeant based in L16) to £87,088 (AMT Property Managment based in L17), 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 Grassendale by posting a job with HaMuch. We will send it to extension builders in Grassendale who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Bebington | £31 | £222 |
| Granny Annexe near Huyton with Roby | £31 | £225 |
| Granny Annexe near Liverpool | £31 | £222 |
| Granny Annexe near Ellesmere Port | £31 | £214 |
| Granny Annexe near Birkenhead | £31 | £219 |
| Granny Annexe near Knowsley | £31 | £222 |
| Granny Annexe near Prescot | £31 | £223 |
| Granny Annexe near Widnes | £31 | £220 |
| Granny Annexe near Wallasey | £32 | £224 |
| Granny Annexe near Halton | £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 - £17,370

Two storey extension - £87,804

Build a timber frame extension - £25,870

Build a swimming pool - £80,870

Single storey extension - £52,392

Side return extension - £40,033

Install an RSJ - £2,070

Outbuilding - £9,870

Build a Mansard loft conversion - £51,870

Loft conversion - £32,528

Build a kitchen extension - £41,870

Hip to gable loft conversion - £41,870

Granny annexe - £86,870

Garden office - £9,870

Convert a Garage - £15,870

Garage - £18,370

Build a flat roof extension - £21,870

Build a dormer loft conversion - £41,870

Concrete foundations - £6,120

Convert a bungalow loft - £28,870

Convert a basement - £36,033