Mass Appraisal Methodology Review

The contract seeks a qualified entity to conduct a thorough evaluation of the Detroit Assessor’s mass appraisal methodologies and data practices to ensure compliance with Michigan Act 206 and State Tax Commission regulations. The review will focus on identifying systemic flaws in the valuation models, data inputs, and underlying assumptions used to determine property values across the city, with the goal of uncovering inconsistencies, inaccuracies, or procedural gaps that may lead to inequitable assessments. The contractor is expected to analyze the technical robustness of the appraisal system and provide detailed findings on whether current practices align with state-mandated standards for fairness, transparency, and accuracy. The work must be completed under the subcontract framework with a response deadline of June 25, 2026, and is categorized under NAICS code 541330 for architectural, engineering, and related services. The contracting authority is the City of Detroit, operating under the state of Michigan, and the performance location is not specified beyond the jurisdictional scope of the city’s assessment operations. No set-aside preferences are indicated, and the process will be managed through the Detroit BonfireHub platform. The outcome will inform potential revisions to the city’s appraisal system to enhance compliance, reduce legal exposure, and promote equitable property tax distribution.