From £87,032
Bolton Construction Ltd are here to help customers who need an Extension Builder in BL6. We offer a competitive rate to complete all your extension...
From £86,736
Lostock Design & Build Limited is an established and experienced local extension builder in BL6. Please contact us for a free, no obligation quote ...
From £86,632
Fishers Building & Paving Ltd is an established extension buildering business in BL6. We come highly recommended and provide competitive quotes for...
From £86,760
IK MASTER BUILD LTD is an established and experienced local extension builder in BL6. Please contact us for a free, no obligation quote and competi...
From £87,040
PETER BALDWIN BUILDERS is an established extension buildering business in BL6. We come highly recommended and provide competitive quotes for your w...
From £86,688
Lostock Design & Build is an established and experienced local extension builder in BL6. Please contact us for a free, no obligation quote and comp...
From £86,720
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £86,808
Need an Extension Builder in BL6? CB BUILDING & JOINERY LTD has been helping local clients (20 mile radius) with their extension buildering jobs fo...
From £86,600
Relax... you have found a reliable extension builder in BL6. VOSE CONSTRUCTION LTD is a friendly and reliable company based in BL6 who consider no ...
From £86,456
APS pointing and property maintenance offers a complete building service from small patch pointing to full refurb or extensions. Competitiv...

Building a granny annexe ranges from £86,456 (Aps pointing and property maintenance based in WN2) to £87,040 (PETER BALDWIN BUILDERS 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 BL6 by posting a job with HaMuch. We will send it to extension builders in BL6 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Horwich | £31 | £220 |
| Granny Annexe near Westhoughton | £31 | £223 |
| Granny Annexe near Hindley | £30 | £220 |
| Granny Annexe near Bolton | £31 | £219 |
| Granny Annexe near Atherton | £31 | £223 |
| Granny Annexe near Wigan | £30 | £219 |
| Granny Annexe near Chorley | £31 | £222 |
| 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 - £17,247

Two storey extension - £87,621

Build a timber frame extension - £25,747

Build a swimming pool - £80,747

Single storey extension - £49,944

Side return extension - £38,656

Install an RSJ - £1,947

Outbuilding - £9,747

Build a Mansard loft conversion - £51,747

Loft conversion - £31,380

Build a kitchen extension - £41,747

Hip to gable loft conversion - £41,747

Granny annexe - £86,747

Garden office - £9,747

Convert a Garage - £15,747

Garage - £18,247

Build a flat roof extension - £21,747

Build a dormer loft conversion - £41,747

Concrete foundations - £5,997

Convert a bungalow loft - £28,747

Convert a basement - £34,656