Cost to build a flat roof extension in MK3

Extend your MK3 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 MK3?

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Flat roof extension cost in MK3
Build a flat roof extension cost in MK3
Estimates for common extension builder jobs in MK3;

Flat roof extension cost in MK3

A flat roof extension ranges from the cheapest of £21,600 (R&R CONSTRUCTION based in MK12) to the dearest of £22,016 (GDM Electrical Buckinghamshire Ltd based in LU7), 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 MK3 by posting a job with HaMuch. We'll send it to extension builders in MK3.

Estimates for build a flat roof extension near MK3

Estimates for common extension builder jobs in MK3;

Rates for other MK3 trades

Build a flat roof extension cost in MK3

Estimate Build a flat roof extension cost in MK3 based on hourly/daily rate (excluding VAT or callout charges)
Business name	Build a flat roof extension cost
BURCROFT BUILDERS, Church Green, MK3	£21,888
GD RAWLINGS BUILDING, Church Green, MK3	£21,896
Go-Large Design & Build Ltd, Church Green, MK3	£21,800
Highland Homes & Gardens, Shenley Brook End, MK4	£21,808
Dallcompanies Limited, Buckinghamshire, MK4	£21,976
A J S Building Work, Woughton On The Green, MK6	£21,888
Building Better Spaces, Buckinghamshire, MK2	£21,984
JAB, Buckinghamshire, MK4	£21,968
Langton Build, Shenley Church End, MK5	£21,792
STARGRADE CONSTRUCTION LTD, Loughton, MK8	£21,896
HydroGas Services Ltd, Buckinghamshire, MK9	£21,968
Asanta Builder, Stantonbury, MK14	£21,792
Dean Prichard Building Services, Bradwell, MK13	£21,792
GDM Electrical Buckinghamshire Ltd, Bedfordshire, LU7	£22,016
MBP Construction Ltd, Milton Keynes, MK17	£21,680
Smart Skim Plastering, New Bradwell, Milton, MK13	£21,768
Alexander Bradshaw LTD, Buckinghamshire, MK12	£21,800
JA Project Management Services, Buckinghamshire, MK14	£21,952
Hyatt and Co Building Services, Buckinghamshire, MK12	£21,800
R&R CONSTRUCTION, Milton Keynes, MK12	£21,600
ROGERS BUILDERS (AYLESBURY)LTD, Bow Brickhill, MK17	£21,720
J&J Property Services, Milton Keynes, MK14	£21,600
EXPERT BUILDING SERVICES, Bow Brickhill, MK17	£21,904
WOBURN BUILDERS LTD, Bow Brickhill, MK17	£21,936
Steve Miller Building Services, Bucks, MK16	£21,960

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Location in UK	Hourly Rate	Daily Rate
Build A Flat Roof Extension near Bletchley	£34	£227
Build A Flat Roof Extension near Milton Keynes	£33	£226
Build A Flat Roof Extension near Leighton Buzzard	£33	£235
Build A Flat Roof Extension near Aylesbury Vale	£34	£230
Build A Flat Roof Extension near Ampthill	£31	£214
Build A Flat Roof Extension near Mid Bedfordshire	£34	£225
Build A Flat Roof Extension near Dunstable	£36	£235
Build A Flat Roof Extension near Aylesbury	£36	£236
Build A Flat Roof Extension near Kempston	£37	£230
Build A Flat Roof Extension near Bedford	£38	£233

	Job	Estimate
	Cost to underpin a house	£17,347
	Build a two storey extension	£87,771
	Cost to build a timber frame extension	£25,847
	Cost to build a swimming pool	£80,847
	Cost to build a single storey extension	£51,947
	Cost to build a side return extension	£39,783
	Cost to Install an RSJ	£2,047
	Build an outbuilding	£9,847
	Cost to build a mansard loft conversion	£51,847
	Cost of a loft conversion	£32,319
	Cost to build a kitchen extension	£41,847
	Build a hip to gable loft conversion	£41,847
	Build a granny annexe	£86,847
	Build a garden office	£9,847
	Cost of a garage conversion	£15,847
	Build a new garage	£18,347
	Cost to build a flat roof extension	£21,847
	Cost to build a dormer loft conversion	£41,847
	Lay a concrete foundation	£6,097
	Cost of a bungalow loft conversion	£28,847
	Basement conversion cost	£35,783