Mich. Comp. Laws § 259.482: Permit required for construction of certain structures.

Sec. 2.

Without a permit issued by the commission, a person shall not construct any of the following:

A structure regulated under section 2a or 4.

A structure that is, or that increases the height of an existing structure, higher than 200 feet above the ground elevation at the structure's site or higher than an imaginary plane extending outward and upward at any of the following slopes:

For an airport with at least 1 runway that is more than 3,200 feet in length, 100 to 1 for a horizontal distance of 20,000 feet from the nearest point of the nearest runway.

For an airport whose longest runway is 3,200 feet or less in length, excluding heliports, 50 to 1 for a horizontal distance of 10,000 feet from the nearest point of the nearest runway.

For a heliport, 25 to 1 for a horizontal distance of 5,000 feet from the nearest point of the nearest landing and takeoff area.