Planning Permission 10 Year Rule: The Complete UK Homeowner’s Guide
November 21, 2025
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The Planning Permission 10 Year Rule explains when unauthorised building works or changes of use can become lawful through the passage of time. This guide breaks down the new 10-year enforcement period in England, how it differs from the old 4-year rule, what evidence you need, and how to secure your position with a Lawful Development Certificate.
