EXTENSIONS

Adding an Extension to Your House

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Before adding an extension to your house, check if you need planning permission. Certain extensions fall under 'permitted development,' exempting them from planning permission.

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Permitted Development:

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For single-storey extensions:

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• Must be at the back of the house

• Cannot extend beyond 3 meters for terraced houses, or 4 meters for others

• Eaves height no higher than 3 meters

• Maximum height of 4 meters, including sloping roofs

• Must not cover more ground than the house

• Cannot exceed half the curtilage

• Not permitted within conservation areas

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For multi-storey extensions:

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• Must be at the back of the house

• Maintain at least 10 meters from property boundaries

• Cannot exceed the house's height (excluding chimneys)

• Must not cover more ground than the original house

• Cannot exceed half the curtilage

• Not permitted within conservation areas

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Check with your council's planning department to confirm requirements. If not eligible for permitted development, you'll need planning permission.