From £86,736
Lostock Design & Build Limited is an established and experienced local extension builder in Horwich. Please contact us for a free, no obligation qu...
From £86,632
Fishers Building & Paving Ltd is an established extension buildering business in Horwich. We come highly recommended and provide competitive quotes...
From £86,760
IK MASTER BUILD LTD is an established and experienced local extension builder in Horwich. Please contact us for a free, no obligation quote and com...
From £87,040
PETER BALDWIN BUILDERS is an established extension buildering business in Horwich. We come highly recommended and provide competitive quotes for yo...
From £86,688
Lostock Design & Build is an established and experienced local extension builder in Horwich. Please contact us for a free, no obligation quote and ...
From £86,808
Need an Extension Builder in Horwich? CB BUILDING & JOINERY LTD has been helping local clients (20 mile radius) with their extension buildering job...
From £86,600
Relax... you have found a reliable extension builder in Horwich. VOSE CONSTRUCTION LTD is a friendly and reliable company based in Horwich who cons...
From £86,456
APS pointing and property maintenance offers a complete building service from small patch pointing to full refurb or extensions. Competitiv...
From £87,080
Astley Bridge Building Services have been established since 1999 and offer quality building services to the public who are looking for a personal s...
From £87,048
HAROLDS CORP is a trusted extension builder serving customers in Horwich and the surrounding area. Contact us to today to get a competitive quote f...

Building a granny annexe ranges from £86,456 (Aps pointing and property maintenance based in WN2) to £87,080 (Astley Bridge Building Services based in BL1), 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 Horwich by posting a job with HaMuch. We will send it to extension builders in Horwich who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Horwich | £30 | £219 |
| Granny Annexe near Westhoughton | £31 | £222 |
| Granny Annexe near Hindley | £30 | £218 |
| Granny Annexe near Bolton | £31 | £219 |
| Granny Annexe near Atherton | £31 | £223 |
| Granny Annexe near Wigan | £30 | £219 |
| Granny Annexe near Chorley | £30 | £221 |
| Granny Annexe near Little Hulton | £30 | £220 |
| Granny Annexe near Farnworth | £30 | £219 |
| Granny Annexe near Leigh | £31 | £224 |
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 - £17,285

Two storey extension - £87,677

Build a timber frame extension - £25,785

Build a swimming pool - £80,785

Single storey extension - £50,696

Side return extension - £39,079

Install an RSJ - £1,985

Outbuilding - £9,785

Build a Mansard loft conversion - £51,785

Loft conversion - £31,733

Build a kitchen extension - £41,785

Hip to gable loft conversion - £41,785

Granny annexe - £86,785

Garden office - £9,785

Convert a Garage - £15,785

Garage - £18,285

Build a flat roof extension - £21,785

Build a dormer loft conversion - £41,785

Concrete foundations - £6,035

Convert a bungalow loft - £28,785

Convert a basement - £35,079