Whether you need a Party Wall Agreement depends on the nature of your building works and their proximity to shared (or adjoining) walls, structures, or boundaries. It’s important not to rely solely on your builder’s advice, as they may not be familiar with the legal requirements of the Party Wall etc. Act 1996.
Here’s when a Party Wall Agreement is required:
You must notify adjoining owners if your work includes:
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Work on a shared (party) wall or structure, such as:
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Cutting into a party wall (for beams, foundations, etc.)
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Raising, thickening, or demolishing part of it
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Excavating within 3 or 6 meters of a neighbour’s structure if it’s to a lower level
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Building on or near the boundary line (party fence wall)
If your project does any of the above, then:
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You must serve a Party Wall Notice.
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If your neighbour consents in writing, then you’re fine.
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If they dissent (or don’t respond within 14 days), you need a Party Wall Agreement (also called an “Award”), which is typically prepared by surveyors.
Common misconception:
Builders sometimes say it’s not needed to speed things up or avoid additional cost, or they are not familiar with the Party Wall Process —but you as the building owner are legally responsible for compliance.
