Cost to build a flat roof extension in St Agnes

Extend your St Agnes 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 St Agnes?

HaMuch is Excellent

Flat roof extension cost in St Agnes

A flat roof extension ranges from the cheapest of £21,376 (Cannon and Son Ltd. based in TR6) to the dearest of £21,712 (Refresh Renovations Cornwall based in PL25), 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 St Agnes by posting a job with HaMuch. We'll send it to extension builders in St Agnes.

Estimates for build a flat roof extension near St Agnes

	Job	Estimate
	Cost to underpin a house	£17,018
	Build a two storey extension	£87,278
	Cost to build a timber frame extension	£25,518
	Cost to build a swimming pool	£80,518
	Cost to build a single storey extension	£45,368
	Cost to build a side return extension	£36,082
	Cost to Install an RSJ	£1,718
	Build an outbuilding	£9,518
	Cost to build a mansard loft conversion	£51,518
	Cost of a loft conversion	£29,235
	Cost to build a kitchen extension	£41,518
	Build a hip to gable loft conversion	£41,518
	Build a granny annexe	£86,518
	Build a garden office	£9,518
	Cost of a garage conversion	£15,518
	Build a new garage	£18,018
	Cost to build a flat roof extension	£21,518
	Cost to build a dormer loft conversion	£41,518
	Lay a concrete foundation	£5,768
	Cost of a bungalow loft conversion	£28,518
	Basement conversion cost	£32,082

Business name	Build a flat roof extension cost
Cannon and Son Ltd., Cornwall, TR6	£21,536
Cannon and Son Ltd., 6 Wheal Leisure Close, Perranporth, Cornwall, TR6	£21,376
Peninsula Property Refurbishments, REDRUTH, TR15	£21,600
D & S Builders, Redruth, TR15	£21,440
J C MITCHELL BUILDERS LTD, Truro, TR1	£21,384
KEAST CONSTRUCTION LTD, Truro, TR1	£21,432
KPK Builders Ltd, Lanner, TR16	£21,384
Rock Construction, Cornwall, TR1	£21,536
A Collins Building Contractor, Goonhavern, TR4	£21,456
TR1 Construction Ltd, Truro, TR1	£21,456
Jo Tracey Carpentry, Cornwall, TR3	£21,488
D.P.Hatley Building Services, Camborne, TR14	£21,432
MYSA, Cornwall, TR7	£21,608
Samuel Winn Design & Build, Cornwall, TR3	£21,472
HANDLEY BUILDERS, Newquay, TR7	£21,536
Marks maintenance, Cornwall, TR14	£21,432
Jackson Developments, Cornwall, TR10	£21,488
KC DESIGN AND BUILD, Gerrans, TR2	£21,536
Cloverfield Construction Ltd, Cornwall, TR11	£21,472
BUILDMARK BUILDERS, St Mewan, PL26	£21,640
Pendragon Builders Ltd, Bunny's Cottage, Polmassick, St Austell, Cornwall, PL26	£21,544
Pendragon Builders Ltd, Cornwall, PL26	£21,608
Probuild(cornwall) ltd, Cornwall, PL25	£21,680
Refresh Renovations Cornwall, Cornwall, PL25	£21,712
Refresh Renovations Cornwall, 140 Tregonissey Road, St Austell, Cornwall, PL25	£21,712

Location in UK	Hourly Rate	Daily Rate
Build A Flat Roof Extension near Truro	£27	£182
Build A Flat Roof Extension near Camborne	£25	£177
Build A Flat Roof Extension near Newquay	£27	£193
Build A Flat Roof Extension near Falmouth	£27	£183
Build A Flat Roof Extension near St Ives, Cornwall	£25	£174
Build A Flat Roof Extension near St Austell	£32	£206

Extend your St Agnes with an extension

Flat roof extension cost in St Agnes

Estimates for common extension builder jobs in St Agnes;

Rates for other St Agnes trades

Build a flat roof extension cost in St Agnes

Get extension builder rates instantly