From £22,256
Southend-on-Sea, SS2
Need an Extension Builder in Southend-on-sea? Essex Building Solutions has been helping local clients (20 mile radius) with their extension builder...
From £21,976
Anglian Preservation is an established and experienced local extension builder in Southend-on-sea. Please contact us for a free, no obligation quot...
From £22,168
Need to find an Extension Builder near you for all your extension buildering work?
Wrights Building Services provides a local, trusted exte...
From £22,032
Providing property maintenance, refurbishments, kitchens and bathrooms in the South East and South West of England.We are able to undertake...
From £21,848
Livinston & Son Ltd are here to help customers who need an Extension Builder in Southend-on-sea. We offer a competitive rate to complete all your e...
From £22,152
Experienced extension builder ready to quote for your work. House Q Ltd is the best extension builder in Southend-on-sea. No obligation free quotes...
From £22,000
Need an Extension Builder in Southend-on-sea? Castle Point Construction has been helping local clients (20 mile radius) with their extension builde...
From £21,776
Relax... you have found a reliable extension builder in Southend-on-sea. Old2New Projects is a friendly and reliable company based in Southend-on-s...
From £21,856
Experienced extension builder ready to quote for your work. FILO interiors is the best extension builder in Southend-on-sea. No obligation free quo...

A flat roof extension ranges from the cheapest of £21,776 (Old2New Projects based in SS0) to the dearest of £22,256 (Essex Building Solutions based in SS2), but these are just estimates. While they give you an idea of who will be better value, the best way to compare costs is to get real quotes.
Find out how much your flat roof extension will cost in Southend-on-sea by posting a job with HaMuch. We'll send it to extension builders in Southend-on-sea.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Southend-on-Sea | £37 | £247 |
| Build A Flat Roof Extension near Thundersley | £38 | £251 |
| Build A Flat Roof Extension near Rayleigh | £39 | £252 |
| Build A Flat Roof Extension near Canvey Island | £39 | £256 |
| Build A Flat Roof Extension near Wickford | £39 | £255 |
| Build A Flat Roof Extension near Basildon | £39 | £251 |
| Build A Flat Roof Extension near Stanford-le-Hope | £40 | £254 |
| Build A Flat Roof Extension near Billericay | £38 | £248 |
| Build A Flat Roof Extension near Gillingham | £39 | £253 |
| Build A Flat Roof Extension 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 - £17,489

Two storey extension - £87,983

Build a timber frame extension - £25,989

Build a swimming pool - £80,989

Single storey extension - £54,776

Side return extension - £41,374

Install an RSJ - £2,189

Outbuilding - £9,989

Build a Mansard loft conversion - £51,989

Loft conversion - £33,645

Build a kitchen extension - £41,989

Hip to gable loft conversion - £41,989

Granny annexe - £86,989

Garden office - £9,989

Convert a Garage - £15,989

Garage - £18,489

Build a flat roof extension - £21,989

Build a dormer loft conversion - £41,989

Concrete foundations - £6,239

Convert a bungalow loft - £28,989

Convert a basement - £37,374