Coal mining legacy problems
We can tell you if your proposal is in a 'development high risk area'. These are areas with one or more coal mining issues. See coalfield areas.
If it is you will need to include a 'coal mining risk assessment report', to make sure that the proposed development will be safe and stable.
The site specific information will then need to be looked at by a competent person. They will assess the risks and propose ways of reducing or removing them.
See also: how to make a planning application.