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Steve Bannister
Gosport, PO12
We are a small family run business with over 20 years experience in brickwork, bathroom/kitchen fitting, roofing, landscaping, fencing, tiling and ...
Anthony Withey
Trusted and professional extension builder in Gosport. Experienced in all extension buildering work and keeping within budget and on quote. A W PAV...
O NEILL CONSTRUCTION LTD is an established extension buildering business in Gosport. We come highly recommended and provide competitive quotes for ...
Experienced extension builder ready to quote for your work. Shepperd Developments is the best extension builder in Gosport. No obligation free quot...
Experienced extension builder ready to quote for your work. Portsmouth Building Repairs is the best extension builder in Gosport. No obligation fre...
Gosport, PO12
Peter Fenn Property is a trusted extension builder serving customers in Gosport and the surrounding area. Contact us to today to get a competitive ...
JKS Property is an established and experienced local extension builder in Gosport. Please contact us for a free, no obligation quote and competitiv...
Gosport, PO12
M.K Warner Building Services is an established extension buildering business in Gosport. We come highly recommended and provide competitive quotes ...
BUILD PROJECT LIMITED are here to help customers who need an Extension Builder in Gosport. We offer a competitive rate to complete all your extensi...
Experienced extension builder ready to quote for your work. JM Roofing & Building Services is the best extension builder in Gosport. No obligation ...

Building a granny annexe ranges from £86,920 (M.K Warner Building Services based in PO12) to £87,192 (A W PAVING LTD based in SO31), 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 Gosport by posting a job with HaMuch. We will send it to extension builders in Gosport who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Gosport | £35 | £246 |
| Granny Annexe near Lee-on-the-Solent | £35 | £249 |
| Granny Annexe near Portsmouth | £36 | £250 |
| Granny Annexe near Fareham | £35 | £250 |
| Granny Annexe near Ryde | £34 | £255 |
| Granny Annexe near Havant & Waterloo | £35 | £248 |
| Granny Annexe near Waterlooville | £36 | £250 |
| Granny Annexe near Havant | £35 | £249 |
| Granny Annexe near Locks Heath | £33 | £240 |
| Granny Annexe near Horndean | £36 | £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 - £17,537

Two storey extension - £88,055

Build a timber frame extension - £26,037

Build a swimming pool - £81,037

Single storey extension - £55,736

Side return extension - £41,914

Install an RSJ - £2,237

Outbuilding - £10,037

Build a Mansard loft conversion - £52,037

Loft conversion - £34,095

Build a kitchen extension - £42,037

Hip to gable loft conversion - £42,037

Granny annexe - £87,037

Garden office - £10,037

Convert a Garage - £16,037

Garage - £18,537

Build a flat roof extension - £22,037

Build a dormer loft conversion - £42,037

Concrete foundations - £6,287

Convert a bungalow loft - £29,037

Convert a basement - £37,914