From £86,864
Rochester, ME1
G J Roofing Services is an established and experienced local extension builder in Rochester. Please contact us for a free, no obligation quote and ...
From £86,976
Rochester, ME1
Freeman V & Co are here to help customers who need an Extension Builder in Rochester. We offer a competitive rate to complete all your extension bu...
From £86,944
Top Form Construction are here to help customers who need an Extension Builder in Rochester. We offer a competitive rate to complete all your exten...
From £86,960
M K Builders Medway Ltd is an established extension buildering business in Rochester. We come highly recommended and provide competitive quotes for...
From £87,040
Relax... you have found a reliable extension builder in Rochester. CLEAN ROOM CONSTRUCTION LTD is a friendly and reliable company based in Rocheste...
From £87,240
AF Renovations LTD is an established and experienced local extension builder in Rochester. Please contact us for a free, no obligation quote and co...
From £86,904
Zeppelin Construction Ltd is a construction company based in Gillingham, Kent. We offer a wide range of construction services to both domestic and ...
From £86,848
Experienced extension builder ready to quote for your work. ASTA BUILDING LTD is the best extension builder in Rochester. No obligation free quotes...
From £87,080
We are a family run business with over 30 years experience in the roofing industry. We pride ourselves on our high standards of workmanship and cus...
From £86,904
Need to find an Extension Builder near you for all your extension buildering work?
Holbrook Construction provides a local, trusted extensio...

Building a granny annexe ranges from £86,848 (ASTA BUILDING LTD based in ME2) to £87,240 (AF Renovations LTD based in Me2), 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 Rochester by posting a job with HaMuch. We will send it to extension builders in Rochester who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Rochester | £39 | £254 |
| Granny Annexe near Chatham | £39 | £254 |
| Granny Annexe near Gillingham | £39 | £253 |
| Granny Annexe near Larkfield | £41 | £253 |
| Granny Annexe near Gravesend | £40 | £260 |
| Granny Annexe near Maidstone | £40 | £255 |
| Granny Annexe near Northfleet | £41 | £261 |
| Granny Annexe near Grays | £41 | £261 |
| Granny Annexe near Sittingbourne | £35 | £246 |
| Granny Annexe near Thurrock | £41 | £260 |
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 - £17,476

Two storey extension - £87,964

Build a timber frame extension - £25,976

Build a swimming pool - £80,976

Single storey extension - £54,520

Side return extension - £41,230

Install an RSJ - £2,176

Outbuilding - £9,976

Build a Mansard loft conversion - £51,976

Loft conversion - £33,525

Build a kitchen extension - £41,976

Hip to gable loft conversion - £41,976

Granny annexe - £86,976

Garden office - £9,976

Convert a Garage - £15,976

Garage - £18,476

Build a flat roof extension - £21,976

Build a dormer loft conversion - £41,976

Concrete foundations - £6,226

Convert a bungalow loft - £28,976

Convert a basement - £37,230