Find out in minutes if you need planning permission
PLAIN turns your idea into a clear route — Permitted Development, Prior Approval or Full Planning — with costs, risks and next steps. No jargon. UK-wide.
Key benefits
- Uses official sources and our 19-section Gold Standard analysis
- Friendly walkthrough: location → your idea → instant route
- Clear fees, drawings and documents you’ll need
- Honest probability and pitfalls to avoid
- Optional paid upgrade for a submission-ready bundle
How it works
1) Tell us where
Postcode, map pin or what3words — whatever you have.
2) Describe your idea
Plain English is perfect. No jargon needed.
3) Get your route
PD / Prior Approval / Full — plus costs, risks and next steps.
What you’ll get
- A clear verdict: PD, Prior Approval or Full Planning
- Success probability band (High / Moderate / Low)
- Council fee estimates and timelines
- Required drawings & reports tailored to your route
- A tidy checklist of next actions
Who it’s for
- Home extensions & outbuildings
- Small tourism ideas (e.g., yurts/glamping)
- Conversions & small change of use
Simple but rigorous
PLAIN checks constraints, policy and relevant history wherever possible. If a council blocks direct access, we’ll show you how to upload or paste official details so your report stays accurate.
PLAIN gives rapid planning guidance — it’s not a council decision. Results depend on the accuracy of your info and official records. We’ll always flag uncertainties and how to verify them.