Orange County tax office details revaluation review as residents press appeals

Orange County tax office staff on July 8 described ongoing work to review the county's 2025 property revaluation, saying a third-party vendor is analyzing vertical equity and time‑adjusted sales while county appraisers continue neighborhood-level reviews and processing appeals.

The tax office presentation, given to the Board of County Commissioners by tax office staff Nancy Freeman, said the vendor is comparing 2024 and 2025 valuations, calculating median and mean sales ratios, the coefficient of dispersion (COD), and the price‑related differential (PRD). Freeman said the vendor"had some preliminary results" and that "our hope is to have that information as early as tomorrow"; she said the county expects to bring results to the Board of Equalization and Review before returning findings to the commissioners in September.

Why it matters: County residents will receive tax bills based on the revaluation, and many say increases will make homeownership unaffordable. The county's review is aimed at identifying statistical irregularities that could signal biased valuations and at making neighborhood corrections before tax bills are finalized.

What the county presented - Scope and methods: The vendor will run vertical equity analyses for residential and nonresidential property, compare 2024 vs. 2025 values by building and land types, and compute PRD, COD and median sales ratios by strata including building type, land use, age and…