The values that increased are a direct result of the COVID-19 pandemic, which created short supplies and high demand issues in the automotive industry across the state and country. Virginia Code requires that all personal property assessments use a recognized pricing guide. York County uses 100% of the clean loan value listed in the 'J. D. Power Official Used Car Guide' or 'J.D. Power Official Older Used Car Guide' (formerly NADA) with no additions for condition, mileage or extra options.