Property values throughout Riverside County rose 5% last year to $484 billion, with residences and commercial structures making up the largest share of the valuation, according to a report released Tuesday by the Assessor-Clerk-Recorder’s Office.
The county’s property tax assessment roll for the most recent base year, valued as of Jan. 1, was $24 billion more than in 2025, when the roll totaled about $460 billion, according to the Assessor-Clerk-Recorder’s Office.
“The annual assessment roll represents the culmination of extensive valuation and assessment work completed throughout Riverside County,” Assessor-County Clerk-Recorder Peter Aldana said. “Every assessment on the roll matters to property owners and the public agencies that rely on this information. Our goal is to administer the roll fairly, accurately and consistently so that property owners can have confidence in the assessment process.”
Inflationary pressures, attributable in part to limited available housing inventory, have factored into the property tax expansion throughout the region and elsewhere for years, according to economists.
The assessment roll represents the composite value of all commercial and residential real estate within the county, as well as other property, including farmland, boats, aircraft and timeshares.
The roll has increased for 14 consecutive years. During the Great Recession, $38 billion in value was lost, with assessments bottoming out at $204.8 billion in tax year 2012, according to figures. The roll had been valued at $242.9 billion in 2008, before the deflationary cycle triggered by the economic downturn.
In the most recent assessment, residences, counted as single-family houses, apartments and condominiums, along with commercial structures, represented $438.5 billion, or 90%, of the roll. There were a total 1.012 million secured parcels counted in the previous year, officials said.
Aggregate property values increased by the widest margin, in percentage terms, in the unincorporated community of Romoland, where net taxable valuations totaled $1.87 billion, compared to $1.61 billion the year before — translating to a 13.8% jump.
Among municipalities, Banning showed the strongest percentage growth at 9.4%. The city’s net taxable valuations totaled $4.5 billion, compared to $4.12 billion during the prior base year calculation.
As with every year, the city of Riverside had the highest local roll — $49.72 billion — of all the cities and unincorporated communities listed. In the Coachella Valley, Palm Desert boasted the biggest aggregate assessment at $22.62 billion.
The Board of Supervisors is slated to review the valuation report during its July 28 meeting, which will be its final set of hearings before summer recess, which will last until the end of August.
According to the assessor’s office, property tax bills for the current tax year will start going out in October. Officials noted almost 85% of residences countywide are under Proposition 13 tax mitigation protection, meaning that, regardless of the inflation rate, taxes can only go up on an additional 2% of tax increment.
Homeowners have the right to appeal any increased assessment. More information is available at the Clerk of the Board’s website at aao.countyofriverside.us/.