Frederick Head
Over 35 years experience
We are Gas Safe registered
We are Verified
We pride ourselves on great custom...
Witton & Pearce Builders in Essex is a trusted extension builder serving customers in Leigh-on-sea and the surrounding area. Contact us to today to...
Billy Baverstock
Experienced extension builder ready to quote for your work. Capital Roofing Ltd is the best extension builder in Leigh-on-sea. No obligation free q...
Need to find an Extension Builder near you for all your extension buildering work?
JLS Building Services provides a local, trusted extensio...
Need an Extension Builder in Leigh-on-sea? CONCORD BUILDERS LIMITED has been helping local clients (20 mile radius) with their extension buildering...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Experienced extension builder ready to quote for your work. HIGHLAND CONSTRUCTION is the best extension builder in Leigh-on-sea. No obligation free...
Swaylie Cooper
Royal Roofing & building contractors is an established and experienced local extension builder in Leigh-on-sea. Please contact us for a free, no o...
Need an Extension Builder in Leigh-on-sea? DG Construction Essex Ltd has been helping local clients (20 mile radius) with their extension builderin...

Building a granny annexe ranges from £86,272 (Royal Roofing & building contractors based in SS12) to £87,544 (RJA Building & Maintenance Ltd based in SS11), 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 Leigh-on-sea by posting a job with HaMuch. We will send it to extension builders in Leigh-on-sea who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Southend-on-Sea | £37 | £247 |
| Granny Annexe near Thundersley | £38 | £251 |
| Granny Annexe near Rayleigh | £39 | £252 |
| Granny Annexe near Canvey Island | £39 | £256 |
| Granny Annexe near Wickford | £39 | £255 |
| Granny Annexe near Basildon | £39 | £251 |
| Granny Annexe near Stanford-le-Hope | £40 | £254 |
| Granny Annexe near Billericay | £38 | £248 |
| Granny Annexe near Gillingham | £39 | £253 |
| Granny Annexe near Maldon | £36 | £244 |
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 - £17,441

Two storey extension - £87,911

Build a timber frame extension - £25,941

Build a swimming pool - £80,941

Single storey extension - £53,816

Side return extension - £40,834

Install an RSJ - £2,141

Outbuilding - £9,941

Build a Mansard loft conversion - £51,941

Loft conversion - £33,195

Build a kitchen extension - £41,941

Hip to gable loft conversion - £41,941

Granny annexe - £86,941

Garden office - £9,941

Convert a Garage - £15,941

Garage - £18,441

Build a flat roof extension - £21,941

Build a dormer loft conversion - £41,941

Concrete foundations - £6,191

Convert a bungalow loft - £28,941

Convert a basement - £36,834