From £87,200
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £86,960
Gillingham, ME7
Need to find an Extension Builder near you for all your extension buildering work?
McCready's Lofts & Refurbishments provides a local, trus...
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 £86,960
M K Builders Medway Ltd is an established extension buildering business in Gillingham. We come highly recommended and provide competitive quotes fo...
From £86,944
Top Form Construction are here to help customers who need an Extension Builder in Gillingham. We offer a competitive rate to complete all your exte...
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 £86,976
Freeman V & Co are here to help customers who need an Extension Builder in Gillingham. We offer a competitive rate to complete all your extension b...
From £86,920
Gillingham, ME7
DG Building Services Kent Limited is an established and experienced local extension builder in Gillingham. Please contact us for a free, no obligat...
From £86,864
G J Roofing Services is an established and experienced local extension builder in Gillingham. Please contact us for a free, no obligation quote and...

Building a granny annexe ranges from £86,864 (G J Roofing Services based in ME1) to £87,424 (Des Durant General Building based in ME5), 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 Gillingham by posting a job with HaMuch. We will send it to extension builders in Gillingham who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Gillingham | £39 | £253 |
| Granny Annexe near Chatham | £39 | £254 |
| Granny Annexe near Rochester | £39 | £254 |
| Granny Annexe near Larkfield | £41 | £253 |
| Granny Annexe near Maidstone | £40 | £255 |
| Granny Annexe near Gravesend | £40 | £260 |
| Granny Annexe near Sittingbourne | £35 | £246 |
| Granny Annexe near Northfleet | £41 | £261 |
| Granny Annexe near Canvey Island | £39 | £256 |
| Granny Annexe near Stanford-le-Hope | £40 | £254 |
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 - £17,523

Two storey extension - £88,035

Build a timber frame extension - £26,023

Build a swimming pool - £81,023

Single storey extension - £55,464

Side return extension - £41,761

Install an RSJ - £2,223

Outbuilding - £10,023

Build a Mansard loft conversion - £52,023

Loft conversion - £33,968

Build a kitchen extension - £42,023

Hip to gable loft conversion - £42,023

Granny annexe - £87,023

Garden office - £10,023

Convert a Garage - £16,023

Garage - £18,523

Build a flat roof extension - £22,023

Build a dormer loft conversion - £42,023

Concrete foundations - £6,273

Convert a bungalow loft - £29,023

Convert a basement - £37,761