MB Planning Alerts is a UK service from MangyByte that helps people keep track of planning applications in their neighbourhood. Users can enter a full UK postcode to browse applications collected for the corresponding postcode district; the search is not a radius search. Each listing includes application details and a link to the relevant council source, helping users understand what has been recorded.

Visitors can explore the service without an account, while a free account includes one saved location and a daily email digest. Planning Alerts Premium costs £3.99 per month or £29 per year and provides unlimited saved locations, with a choice of faster email alerts or a daily digest. Faster alerts are sent after the service collects a matching application, so timing depends on when councils publish information and when it is collected.

The site also offers guides about planning applications, local councils and planning permission. Its data comes from UK local authority public registers, with coverage and update times varying by authority.