Biennial Property Assessment Act to Update High Park Home Valuations Starting Next Year

The state legislature passed the Biennial Property Assessment Act on June 15. The measure requires county assessors to revalue all residential properties every two years instead of the prior four-year cycle, and it covers the 12,450 homes recorded in High Park by the county tax roll.

State revenue department filings show the change responds to documented price movements between 2024 and 2025 that exceeded earlier four-year averages. County offices will now align their records with those recent sales data rather than rely on older figures.

High Park residents will first notice the difference when assessment notices arrive by mail in September 2026. A house purchased for $485,000 in 2023, for example, will be reviewed against comparable sales from the preceding 24 months before the new value is set.

Revenue and Service Links

City budget papers list property tax receipts as the source of 18 percent of funds used for street resurfacing on routes such as High Park Boulevard and for operating hours at the main branch library. The act itself does not alter the tax rate, yet any shift in assessed values will change the dollar amount collected from each parcel.

Department of revenue projections released June 28 estimate an average 4.2 percent rise in assessed values for districts matching High Park's density and sales volume. Those figures appear in the same preliminary report that outlines how the new cycle will be phased across all counties.

Remaining Schedule

Property owners may file appeals with the county board through October 31, 2026. Final tax statements reflecting the updated assessments will be mailed in December 2026 and become payable by February 28, 2027. The legislation sets the next reassessment round for 2028 under the same two-year interval.