How close to a party wall can I build?

Excavation within three metres of and below the level of a neighbour’s foundations is work falling under the Party Wall Act.

Deep excavation within 6 metres of a neighbour’s foundations may also fall under the Party Wall Act.

If you are not excavating below the level of a party wall, the Party Wall Act does not define how close you can build, but if the work involves cutting into or away from the Party Wall it will fall under the Party Wall Act and the correct procedures must be followed.

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