Property Assessment Mass Appraisal Evaluation Service

The City of Philadelphia, Pennsylvania, requires a qualified consulting firm to evaluate its property assessment mass appraisal practices. The agency is seeking to improve its data quality, assessment accuracy, and system equity in alignment with International Association of Assessing Officers standards and industry best practices. This initiative aims to identify opportunities for incorporating additional internal, public, and third-party data sources, specifically regarding property characteristics and condition. The selected partner must evaluate valuation models, sales validation processes, and the representativeness of the data used in analyses. The scope of work includes conducting independent analyses of equity and fairness to identify any disparities in assessment outcomes across different neighborhoods or populations. Additionally, the agency requires a less discriminatory alternative analysis to determine if modifications to current valuation methods can reduce disparate impacts without compromising accuracy or uniformity. The agency requires the delivery of both a detailed written report and an oral presentation summarizing all findings, analyses, and recommendations. Only onshore organizations based in the United States are eligible to bid on this opportunity. Bidders may perform the work either onsite or offsite, and they must submit their proposals digitally via email or through the online portal. The agency is currently looking for proposals to establish the budget for this project. Bidders must submit all questions regarding this opportunity no later than June 09, 2026.