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Costings
How much will my extension cost?
This is the question clients want to know to start planning a new project use our tool to get a price and ideas for your future home.
Please note these prices include VAT and all components like electrics, doors & windows
House Type
Extension Type
Loft Conversion
£100,000
ESTIMATED COST
FLAT ROOF
3m x 3m Rear Extension
£90,000
ESTIMATED COST
PITCHED FLAT ROOF
Small Rear Extension
£130,000
ESTIMATED COST
PITCHED ROOF
Large Extension
£80,000
ESTIMATED COST
GABLE ROOF
Medium Size Extension
£75,000
ESTIMATED COST
CROWN ROOF
3m Rear Extension
£120,000
ESTIMATED COST
FLAT ROOF
Small Side Return
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£100,000
ESTIMATED COST
FLAT ROOF
3m x 3m Rear Extension
£90,000
ESTIMATED COST
PITCHED FLAT ROOF
Small Rear Extension
£130,000
ESTIMATED COST
PITCHED ROOF
Large Extension
£80,000
ESTIMATED COST
GABLE ROOF
Medium Size Extension
£75,000
ESTIMATED COST
CROWN ROOF
3m Rear Extension
£120,000
ESTIMATED COST
FLAT ROOF
Small Side Return
Other example costs
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