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Permits & building

Unauthorised building regularisation deadline

Check whether the general filing window through 31 March 2028 may apply.

  • For tax year 2026
  • Rules last checked 24 October 2026
  • Takes about 2 minutes

Unauthorised work details

Completion date and category
When was the work completed?

Choose based on the evidence your engineer will review.

Category assigned by an engineer

If no technical review has been completed, choose “I don’t know”.

Your answers stay on this device. We do not store or send them.

General deadline indication

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How this check works

The extension applies to category 1–4 unauthorised works completed before 28 July 2011.

Use the category assigned by an engineer. This tool does not classify building work or determine whether a property meets every legal condition.

Select whether the work was completed before 28 July 2011 and the category your engineer recorded.

For work completed before that date and assigned to category 1–4, the general filing deadline is 31 March 2028.

An engineer must check the category, property location and statutory exclusions. This tool does not calculate a fine.

Methodology and disclaimer

Sources

Frequently asked questions

Which date matters?

The general window applies to works completed before 28 July 2011. An engineer must document the completion date.

Does this tool assign a category?

No. A planning review determines the category, which an engineer should confirm.

Does it calculate a fine or full eligibility?

No. It shows only the general filing window and does not check location exclusions, exceptions or all individual conditions.

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