MI HB4773

Changes the population threshold for "former mill" definition from "less than 10,000" to "10,500 according to the most recent federal decennial census" for properties located within 15 miles of a federal superfund site.

Expands the definition of eligible activities for transformational brownfield plans to include any demolition, construction, restoration, alteration, renovation, or improvement of buildings and site improvements on eligible property, including related infrastructure improvements.

Clarifies that a municipality may establish one or more brownfield redevelopment authorities, with authorities established on or after June 6, 2000 able to exercise powers over any eligible property in the municipality.

Defines numerous terms related to brownfield redevelopment including eligible properties, activities, tax increment revenues, and mixed-use development requirements for transformational brownfield plans based on municipality population thresholds ranging from $15 million to $500 million in capital investment.