Trust & Data
Accuracy & Limitations
Maplify is a screening and due-diligence tool. Here's what that means in practice.
Indicative, not definitive
Maplify shows indicative mapping compiled from official public sources. It does not grant planning permission, determine legal boundaries, or replace advice from a planning consultant, solicitor, surveyor or local planning authority.
Where limitations commonly apply
The categories below are the most common places indicative mapping can diverge from a formal, site-specific answer.
Property boundaries
HM Land Registry INSPIRE polygons show the general extent of a registered title, not a legally definitive boundary. Boundary disputes require the official title plan and, often, a chartered surveyor.
Flood risk
Environment Agency flood zones are modelled risk areas. Local drainage, ground levels and flood defences can all affect real-world risk at a specific property — a site-specific Flood Risk Assessment gives a definitive answer.
Local authority data
Designations such as Article 4 Directions and some heritage records are maintained locally and can vary in how completely or promptly they are published nationally. Always confirm directly with the local planning authority for a formal answer.
Geographic gaps
Not every dataset has full UK coverage — many are England-only or England-and-Wales-only. Check the relevant layer's own page for its exact coverage before relying on an absence of data as a "clear" result.
Professional verification
Use Maplify to screen a site quickly and identify what to investigate further — then verify anything material to a transaction or planning decision with the responsible authority or a qualified professional before relying on it.
Reporting an issue
If you spot mapped data that looks wrong or out of date, please let us know — see our Corrections Policy for how to report it.