Lovehome Construction is an established and experienced local extension builder in Billericay. Please contact us for a free, no obligation quote an...
CLYDESDALE CONSTRUCTION LTD is an established extension buildering business in Billericay. We come highly recommended and provide competitive quote...
P OUGHTON BUILDING is an established and experienced local extension builder in Billericay. Please contact us for a free, no obligation quote and c...
Darren Spencer
Need an Extension Builder in Billericay? Ellis & James Builders Limited has been helping local clients (20 mile radius) with their extension builde...
Witton & Pearce Builders in Essex is a trusted extension builder serving customers in Billericay and the surrounding area. Contact us to today to g...
Billy Baverstock
Experienced extension builder ready to quote for your work. Capital Roofing Ltd is the best extension builder in Billericay. No obligation free quo...
Property Maintenance are here to help customers who need an Extension Builder in Billericay. We offer a competitive rate to complete all your exten...
Kay Shearing
In an unstable market house extensions are often the most viable option, helping you to get the most out of the space you have without the addition...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Building a granny annexe ranges from £86,456 (Capital Roofing Ltd based in SS13) 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 Billericay by posting a job with HaMuch. We will send it to extension builders in Billericay who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Billericay | £38 | £248 |
| Granny Annexe near Basildon | £39 | £251 |
| Granny Annexe near Wickford | £39 | £255 |
| Granny Annexe near Brentwood | £39 | £255 |
| Granny Annexe near Stanford-le-Hope | £40 | £254 |
| Granny Annexe near Rayleigh | £39 | £252 |
| Granny Annexe near Thundersley | £38 | £251 |
| Granny Annexe near Chelmsford | £38 | £258 |
| Granny Annexe near Canvey Island | £39 | £256 |
| 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 - £17,652

Two storey extension - £88,228

Build a timber frame extension - £26,152

Build a swimming pool - £81,152

Single storey extension - £58,040

Side return extension - £43,210

Install an RSJ - £2,352

Outbuilding - £10,152

Build a Mansard loft conversion - £52,152

Loft conversion - £35,175

Build a kitchen extension - £42,152

Hip to gable loft conversion - £42,152

Granny annexe - £87,152

Garden office - £10,152

Convert a Garage - £16,152

Garage - £18,652

Build a flat roof extension - £22,152

Build a dormer loft conversion - £42,152

Concrete foundations - £6,402

Convert a bungalow loft - £29,152

Convert a basement - £39,210