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Select your affordable Loughton extension builder
Sean Smithers
Our building services company SDS Constructions has been established for many years and have been providing customers in Dagenham and the surroundi...
Vasile Boghean
Optimus Build Solutions delivers exceptional construction services in London and surronding areas. Specializing in bathroom and kitchen refurbishme...
SC General Builders Ltd are here to help customers who need an Extension Builder in Loughton. We offer a competitive rate to complete all your exte...
ANGLE BUILDERS is an established and experienced local extension builder in Loughton. Please contact us for a free, no obligation quote and competi...
From £21,880
Erald Kanani
Member since August 2025
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Ali Alagoz
Propello is an established and experienced local extension builder in Loughton. Please contact us for a free, no obligation quote and competitive ...
Mick Singh
At Building Services Contractors we pride ourselves on an efficient and friendly service, and strive to achieve 100% customer satisfaction.
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. Render is the best extension builder in Loughton. No obligation free quotes and many ha...

A flat roof extension ranges from the cheapest of £21,880 (Can design and Construction based in Ig11) to the dearest of £23,584 (Propello based in E17), 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 Loughton by posting a job with HaMuch. We'll send it to extension builders in Loughton.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Loughton | £44 | £273 |
| Build A Flat Roof Extension near Epping Forest | £44 | £274 |
| Build A Flat Roof Extension near Redbridge | £41 | £265 |
| Build A Flat Roof Extension near Walthamstow | £45 | £278 |
| Build A Flat Roof Extension near Romford | £45 | £274 |
| Build A Flat Roof Extension near Cheshunt | £48 | £285 |
| Build A Flat Roof Extension near Barking | £43 | £261 |
| Build A Flat Roof Extension near Plaistow | £42 | £268 |
| Build A Flat Roof Extension near Hoddesdon | £46 | £296 |
| Build A Flat Roof Extension near Harlow | £43 | £288 |
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 - £17,972

Two storey extension - £88,708

Build a timber frame extension - £26,472

Build a swimming pool - £81,472

Single storey extension - £64,440

Side return extension - £46,810

Install an RSJ - £2,672

Outbuilding - £10,472

Build a Mansard loft conversion - £52,472

Loft conversion - £38,175

Build a kitchen extension - £42,472

Hip to gable loft conversion - £42,472

Granny annexe - £87,472

Garden office - £10,472

Convert a Garage - £16,472

Garage - £18,972

Build a flat roof extension - £22,472

Build a dormer loft conversion - £42,472

Concrete foundations - £6,722

Convert a bungalow loft - £29,472

Convert a basement - £42,810