Need to find an Extension Builder near you for all your extension buildering work?
S F CONSTRUCTION provides a local, trusted extension bu...
Need to find an Extension Builder near you for all your extension buildering work?
Gem Construction (Sussex) Ltd provides a local, trusted ...
From £87,176
Need to find an Extension Builder near you for all your extension buildering work?
Accurate Roofing & Building Limited provides a local, tr...
From £87,544
Stephen Angel
I have been in business for thirty eight year
I am a very good tradesmen and I am always
busy, I am a member of c...
From £86,808
Richard Dinnage
Need to find an Extension Builder near you for all your extension buildering work?
DINNAGE BUILDERS provides a local, trusted extension bui...
From £86,760
Experienced extension builder ready to quote for your work. M Hone Brickwork is the best extension builder in BN26. No obligation free quotes and m...
From £86,688
Pete Littlejohn
Family run builders with high standards of workmanship and customer service, trading standards approved.
From £86,856
Need to find an Extension Builder near you for all your extension buildering work?
BUILDERS OF SUSSEX LTD provides a local, trusted extensi...
From £87,080
Relax... you have found a reliable extension builder in BN26. Hammonds Toon Design is a friendly and reliable company based in BN26 who consider no...
From £86,744
Need to find an Extension Builder near you for all your extension buildering work?
Colbran & Wingrove Building Contractors provides a local...

Building a granny annexe ranges from £86,688 (Homecare Building Maintenance based in BN22) to £87,544 (Angels Roofing based in BN27), 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 BN26 by posting a job with HaMuch. We will send it to extension builders in BN26 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Eastbourne | £32 | £245 |
| Granny Annexe near Hailsham | £31 | £243 |
| Granny Annexe near Seaford | £34 | £243 |
| Granny Annexe near Wealden | £35 | £256 |
| Granny Annexe near Bexhill-on-Sea | £31 | £243 |
| Granny Annexe near Brighton and Hove | £35 | £251 |
| Granny Annexe near Brighton | £35 | £251 |
| Granny Annexe near Hastings | £31 | £246 |
| Granny Annexe near Crowborough | £36 | £258 |
| Granny Annexe near Burgess Hill | £36 | £240 |
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 - £17,445

Two storey extension - £87,917

Build a timber frame extension - £25,945

Build a swimming pool - £80,945

Single storey extension - £53,896

Side return extension - £40,879

Install an RSJ - £2,145

Outbuilding - £9,945

Build a Mansard loft conversion - £51,945

Loft conversion - £33,233

Build a kitchen extension - £41,945

Hip to gable loft conversion - £41,945

Granny annexe - £86,945

Garden office - £9,945

Convert a Garage - £15,945

Garage - £18,445

Build a flat roof extension - £21,945

Build a dormer loft conversion - £41,945

Concrete foundations - £6,195

Convert a bungalow loft - £28,945

Convert a basement - £36,879