St. Louis County certain housing development projects construction materials refundable exemption and appropriation

This bill provides a refundable sales tax exemption for construction materials used in qualifying housing projects in St. Louis County. It directly affects developers building apartment complexes (20+ units), condominiums (40+ units), or townhome developments (40+ units), covering materials purchased between July 1, 2025, and June 30, 2027. Developers pay the standard sales tax upfront but receive a refund under the same process as existing tax credit programs. The state appropriates funds from the general revenue fund to cover these refunds. The exemption applies only to projects meeting specific unit thresholds within the county.