MI SB1008

Expands the historic rehabilitation tax credit to include historic barns, defined as agricultural structures at least partially constructed before 1945 that were used for agricultural purposes and certified by the state historic preservation office.

Requires the state historic preservation office to establish eligibility guidelines for historic barn certification within 120 days of the bill's effective date.

Updates the definition of "historic resource" in both sections 266a and 676 to explicitly include historic barns alongside other eligible properties.

Maintains existing credit structure allowing qualified taxpayers to claim 25% of qualified expenditures for rehabilitation of historic resources, with the same application, preapproval, and certificate processes already in place.

Preserves all existing limitations including $5,000,000 annual credit cap, $2,000,000 per-project annual limit, and minimum expenditure thresholds for residential and nonresidential historic resources.