Cost to build a flat roof extension in BB1

Extend your BB1 with an extension

A flat roof extension is a great way to add extra space to your home without splashing out on the costs of a pitched roof extension. Often exempt from planning permission rules, you can build a flat roof extension up to 3 metres in height as long as it's not visible from a road. But how much do they cost in BB1?

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Flat roof extension cost in BB1
Build a flat roof extension cost in BB1
Estimates for common extension builder jobs in BB1;

Flat roof extension cost in BB1

A flat roof extension ranges from the cheapest of £21,080 (COMPLETE BUILDING SERVICES based in BB2) to the dearest of £26,400 (Ridgesmart Roofing Ltd based in BB2), 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 BB1 by posting a job with HaMuch. We'll send it to extension builders in BB1.

Estimates for build a flat roof extension near BB1

Estimates for common extension builder jobs in BB1;

Rates for other BB1 trades

Build a flat roof extension cost in BB1

Estimate Build a flat roof extension cost in BB1 based on hourly/daily rate (excluding VAT or callout charges)
Business name	Build a flat roof extension cost
PREMIER CONSTRUCTION T/A, Blackburn, BB1	£21,520
D Parker Design & Build, Lancashire, BB1	£21,608
Builder for u-northwest-cheap-try-Me, Blackburn, BB1	£21,512
Graham Haworth Building Contractors, Blackburn, BB1	£21,544
WM Brickwork & Pointing, Blackburn, BB1	£21,520
Ridgesmart Roofing Ltd, Blackburn, BB2	£26,400
M. Pickering Builder & Joiner, Beardwood, BB2	£21,544
East Lancs Construction Ltd, Beardwood, BB2	£21,512
BRYAN LEE BUILDING CONST LTD, Beardwood, BB2	£21,512
Lonsdale Construction, Blackburn, BB1	£21,544
J. Grimshaw, Accrington, BB5	£21,544
Garry Ryan Property Repairs, Blackburn, BB1	£21,560
Garage Conversions by Joe Hanlon, Accrington, BB5	£21,576
COMPLETE BUILDING SERVICES, Blackburn, BB2	£21,080
SOLIDBUDLTD , Accrington, BB5	£21,576
Darren Gaynor, Accrington, BB5	£21,568
NOBLETT BUILDING SERVICES, Clitheroe, BB7	£21,512
Techbuild Construction North West Ltd, Ribchester, Lancashire, PR3	£21,488
New Line Construction, Preston, Preston, Preston, PR5	£21,456
SMH Joinery & Building, Rawtenstall, BB4	£21,576
Broadley Construction, Rossendale, Lancashire, BB4	£21,560
Evershield, Preston, PR2	£21,536
O. Morris Construction, Bamber Bridge, PR5	£21,536
Ribble Reclamation, Ribble reclamation NW ltd, Ducie place, Preston, Lancashire, PR1	£21,480
J A HOLMES BUILDING CONTR, Clitheroe, BB7	£21,536

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Location in UK	Hourly Rate	Daily Rate
Build A Flat Roof Extension near Blackburn	£29	£211
Build A Flat Roof Extension near Accrington	£28	£211
Build A Flat Roof Extension near Darwen	£30	£223
Build A Flat Roof Extension near Rawtenstall	£26	£193
Build A Flat Roof Extension near Bamber Bridge	£26	£189
Build A Flat Roof Extension near Chorley	£27	£193
Build A Flat Roof Extension near Burnley	£26	£193
Build A Flat Roof Extension near Preston	£26	£190
Build A Flat Roof Extension near Leyland	£27	£194
Build A Flat Roof Extension near Fulwood	£26	£187

	Job	Estimate
	Cost to underpin a house	£17,212
	Build a two storey extension	£87,568
	Cost to build a timber frame extension	£25,712
	Cost to build a swimming pool	£80,712
	Cost to build a single storey extension	£49,240
	Cost to build a side return extension	£38,260
	Cost to Install an RSJ	£1,912
	Build an outbuilding	£9,712
	Cost to build a mansard loft conversion	£51,712
	Cost of a loft conversion	£31,050
	Cost to build a kitchen extension	£41,712
	Build a hip to gable loft conversion	£41,712
	Build a granny annexe	£86,712
	Build a garden office	£9,712
	Cost of a garage conversion	£15,712
	Build a new garage	£18,212
	Cost to build a flat roof extension	£21,712
	Cost to build a dormer loft conversion	£41,712
	Lay a concrete foundation	£5,962
	Cost of a bungalow loft conversion	£28,712
	Basement conversion cost	£34,260