Lawful development certificate prep checklist
A homeowner worksheet for preparing evidence before applying for a lawful development certificate.
Use the print button to save as PDF from your browser.
Use This Before The Project Becomes Expensive
This resource is designed for early planning decisions. It helps you name the issue, record the obvious checks and avoid paying for drawings, applications or contractor commitments before the planning route is clear enough.
Good use
Print it, mark it up, save the source links and use it as a short agenda for a council, designer, consultant or builder conversation.
Not a decision
It is not a formal certificate, approval, legal opinion or replacement for checking the exact property, council and design.
Best next step
Use the project requirements generator when the checklist shows the route is still unclear or locally sensitive.
Work Through These First
- Decide whether the certificate is for proposed work or existing development/use.
- Identify the lawful basis: permitted development rights, time period, immunity or another route.
- Gather drawings, measurements, photos, planning history and supporting evidence.
- Check whether local restrictions undermine the lawful basis.
Lawful development certificate prep checklist
Tick these off on paper or copy the text into your project notes. Keep any official links, screenshots and dates with the project record.
Evidence to gather
- Existing and proposed drawings with dimensions where the route depends on measurements.
- Photos showing the relevant parts of the property and site.
- Planning history, previous approvals, conditions and earlier works.
- Any documents proving dates, occupation, use or continuity for existing cases.
Application readiness
- Write the exact question the certificate should answer.
- Check whether the proposal relies on rights that may have been removed.
- Separate a certificate application from a planning permission application.
Things Worth Avoiding
- Applying for a certificate when the underlying permitted development case is weak.
- Treating an LDC as a design approval.
- Submitting thin drawings or vague evidence.
- Missing planning conditions that remove the route being claimed.
Questions To Put To The Council Or A Professional
- What legal route is the certificate meant to confirm?
- What evidence proves the measurements, use or dates?
- Would refusal of the certificate point to a planning application instead?
Official Sources Worth Opening Next
Use these as starting points and then check the relevant council page for the property. Rules, validation requirements and local controls can change by authority and site.
Clean Citation Text
Use this when sharing the resource with a neighbour, designer, builder or adviser.
General Guidance Only
This worksheet is not a legal opinion. LDC decisions depend on evidence and the exact lawful basis claimed.
Before relying on a borderline route, confirm the latest position with official sources, the local planning authority or a suitable professional.