how high can summer house be

The greatest height for a summer house with a flat roof or eaves height still needs to be within 2.5m. This is if you are going to build within two metres of the property boundary. In a larger plot with a greater distance between the property boundary and the cabin, you can have a height of 3m. you would generally need only seek Planning Permission for summerhouses: with an overall roof height of over 2.5m

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