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Planning Permission Risk Checker

Traffic-light check of every planning restriction at your postcode: listed buildings, conservation areas, Article 4 directions, Tree Preservation Orders, flood zones. Live data from Planning.data.gov.uk.

Enter your postcode. We'll check live data for listed-building status, conservation areas, Article 4 directions, Tree Preservation Orders, and flood zones, then tell you how much friction your planning application is likely to face.

Frequently Asked Questions

Is this a substitute for getting actual planning advice?

No. This is a first-pass filter. The definitive answer on whether a specific design needs permission comes from your council's pre-application service or a planning consultant. What this tool does is stop you designing an extension that was always going to fail because the property's in a conservation area or has an Article 4 direction on it.

What does 'amber' mean on the traffic light?

Amber means there's a restriction to be aware of but it doesn't kill most projects. For example, a conservation area doesn't block all works, it just means planning consultations are stricter. You still get extensions through, you just design them to match local character.

Why is this postcode showing 'red' for listed building when my house isn't listed?

We check a 50m radius around your postcode centroid. If a listed building is within 50m, party wall rules, sightline assessments, and sometimes Section 106 contributions can still apply to your project. The closer the listed building, the more the council cares about what you build next to it.

The flood zone status is wrong — what do I do?

Planning.data.gov.uk pulls Environment Agency flood zone data, which is the same source councils use. If you think the classification is wrong, the Environment Agency runs a flood-risk appeal process. Start at gov.uk/check-long-term-flood-risk to see the exact zone shapes.

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