What is Over-the-Counter Plan Check?

Over-the-counter plan checks are typically permitted on simpler projects with little to no structural changes planned. For example, a project may include switching out fixtures and doing an interior paint job. A project of this scope would likely be handled over-the-counter. This means that the plan check will be reviewed on the spot by a plan reviewer and will be shorter in duration with comments or RTI being issued at the end.
Source: https://www.permitadvisors.com/resources/