Lawful Development Certificate Checker
Assess LDC eligibility under Section 191 (Existing) or 192 (Proposed)
About this tool: LDC Checker
Lawful Development Certificate guidance — Section 191 (existing) and Section 192 (proposed). Covers 4-year and 10-year immunity rules and evidence requirements.
Use to confirm PD rights formally (S192), or to regularise development that's been in place for 4+ or 10+ years without permission (S191).
Town & Country Planning Act 1990 Sections 191-192
Use these tools to determine whether you need planning permission and which type of application to submit. Getting the consent route wrong wastes time and money. Check PD rights first, then consider whether prior approval or full planning is the better option.
Guidance to help you prepare — not formal planning advice. Check the current policy text and your council's local plan before relying on it.