1 review
From £22,192
NIECEIC / NAAPIT GASSAFE WATER REGULATIONS We offer services towards completion of high end construction projects to dis...
"Did callout made safe my elctrical work thanks" - reviewed 16/05/23, REECYRUSSO
From £22,312
Local Boiler Plumbing & Heating Services is an established and experienced local extension builder in Doddinghurst. Please contact us for a free, n...
From £22,184
Experienced extension builder ready to quote for your work. CC&D BUILDING LTD is the best extension builder in Doddinghurst. No obligation free quo...
From £22,184
Relax... you have found a reliable extension builder in Doddinghurst. First guard Roofing is a friendly and reliable company based in Doddinghurst ...
From £22,616
HOUSE BUILDING SERVICES LIMITED is a trusted extension builder serving customers in Doddinghurst and the surrounding area. Contact us to today to g...
From £21,880
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...
From £22,248
At Building Services Contractors we pride ourselves on an efficient and friendly service, and strive to achieve 100% customer satisfaction.
From £23,584
Propello is an established and experienced local extension builder in Doddinghurst. Please contact us for a free, no obligation quote and competit...
From £22,424
Nouvell Decor is a trusted extension builder serving customers in Doddinghurst and the surrounding area. Contact us to today to get a competitive q...
From £22,312
skilled worker who specializes in completing a wide range of building and renovation projects

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 Doddinghurst by posting a job with HaMuch. We'll send it to extension builders in Doddinghurst.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Brentwood | £39 | £255 |
| Build A Flat Roof Extension near Billericay | £38 | £248 |
| Build A Flat Roof Extension near Romford | £45 | £274 |
| Build A Flat Roof Extension near Basildon | £39 | £251 |
| Build A Flat Roof Extension near South Ockendon | £58 | £276 |
| Build A Flat Roof Extension near Chelmsford | £38 | £258 |
| Build A Flat Roof Extension near Wickford | £39 | £255 |
| Build A Flat Roof Extension near Stanford-le-Hope | £40 | £254 |
| Build A Flat Roof Extension near Loughton | £44 | £273 |
| Build A Flat Roof Extension 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 - £17,894

Two storey extension - £88,590

Build a timber frame extension - £26,394

Build a swimming pool - £81,394

Single storey extension - £62,872

Side return extension - £45,928

Install an RSJ - £2,594

Outbuilding - £10,394

Build a Mansard loft conversion - £52,394

Loft conversion - £37,440

Build a kitchen extension - £42,394

Hip to gable loft conversion - £42,394

Granny annexe - £87,394

Garden office - £10,394

Convert a Garage - £16,394

Garage - £18,894

Build a flat roof extension - £22,394

Build a dormer loft conversion - £42,394

Concrete foundations - £6,644

Convert a bungalow loft - £29,394

Convert a basement - £41,928