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Flat roof extension cost in Colnbrook

Estimates for build a flat roof extension near Colnbrook

A flat roof extension ranges from the cheapest of £21,888 (Nirvair Builders based in UB3) to the dearest of £22,432 (GMB BUILDING SERVICES based in UB8), 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 Colnbrook by posting a job with HaMuch. We'll send it to extension builders in Colnbrook.

"Flat roof extension" - WEST DRAYTON, job posted 23/11/25

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Location in UK	Hourly Rate	Daily Rate
Build A Flat Roof Extension near Slough	£42	£272
Build A Flat Roof Extension near Windsor & Maidenhead	£42	£272
Build A Flat Roof Extension near Windsor	£41	£271
Build A Flat Roof Extension near Staines-upon-Thames	£42	£269
Build A Flat Roof Extension near Egham	£42	£266
Build A Flat Roof Extension near Hillingdon	£43	£276
Build A Flat Roof Extension near Gerrards Cross	£43	£283
Build A Flat Roof Extension near Maidenhead	£41	£273
Build A Flat Roof Extension near Ascot	£41	£276
Build A Flat Roof Extension near Sunbury-on-Thames	£43	£273

Estimates for common extension builder jobs in Colnbrook;

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.