Multiple Regression Modeling Services

Davis County, Utah is seeking Professional Mass Appraisal Consultants through a Request for Proposals (RFP) for multiple regression modeling services targeting taxable real property. The procurement aims to develop market models for valuing approximately 90,000 residential and 6,000 commercial properties for the years 2026 and 2027, with potential contract extension through 2028. Qualified vendors must possess a minimum of 5 years of experience in mass valuation modeling, specifically demonstrating proficiency with SPSS for creating residential and commercial valuation models and extracting data from CAMA systems. The evaluation criteria will heavily weight vendor experience and references at 40%, with specific emphasis on SPSS and Utah modeling experience, followed by a 30% allocation for training plan and 20% for cost considerations. Proposals are due by November 6, 2025, at 5:00 p.m. Mountain Time, with an anticipated contract award date of December 16, 2025. The selected vendor will be responsible for comprehensive tasks including data extraction, model development, accuracy testing, and training county data analysts in all aspects of the valuation models.

The RFP does not explicitly specify set-aside designations or restrictions on respondent types, such as minority-owned or disadvantaged business enterprises. The contract requires the selected vendor to carry professional liability insurance with minimum per occurrence limits of $1,000,000 and aggregate limits of $2,000,000, along with other standard insurance coverages. While specific budget ranges are not detailed in the provided documentation, the scope of work suggests a substantial project involving modeling for over 96,000 properties across residential and commercial categories. The vendor must demonstrate capability to utilize SPSS, GIS, and Microsoft suite products in developing the regression models. Technology integration will primarily involve extracting and analyzing data from the county's existing Computer Assisted Mass Appraisal (CAMA) systems, with the ultimate goal of creating equitable and accurate property valuations for Davis County.