Orange County property owners will get a 2 percent increase in their tax bills this year, the biggest hike in four years thanks to higher inflation rates.

And rising real estate values also will boost revenue for such entities as schools and local governments this year.

The 2017-18 tax roll unveiled late Monday, July 10, shows that the assessed value of taxable Orange County property increased 6.02 percent to nearly $558 billion this year, the Orange County Tax Assessor’s Office reported. These increases will be reflected in property tax bills mailed in September and due in two installments next December and April.

“Value changes are reflecting the Orange County real estate markets that show continued appreciation in property values this year and the restoration of values previously reduced” during the real estate downturn, an assessor’s statement said.

Under Prop. 13, property tax increases usually are limited to the rate of inflation — up to a maximum of 2 percent a year. The statewide inflation rate hasn’t been at the 2 percent maximum since 2013, although it was just a hair below that amount two years ago. Taxes increased 1.5 percent in 2016, 1.998 percent in 2015 and 0.5 percent in 2014.

Tax gains can exceed the 2 percent cap only when a property is sold or after recovering from a price drop that resulted in a previous tax reduction.

This year’s total taxable value is up $31.7 billion from 2016-17.

Real estate makes up $537 billion, or 96.3 percent, of the property tax roll, the assessor’s office reported. The remaining $20.4 billion is based on the value of such “personal” property as business equipment, plus 23,900 boats and 768 aircraft.

Irvine had both the biggest property tax base and the biggest increase in taxable property values this year, the assessor’s office said. Property values in that city increased 8.8 percent to $71.6 billion.

Newport Beach had the second-highest taxable value at $53.8 billion; Anaheim’s tax base was the county’s third biggest at $43.3 billion.

La Palma had the smallest increase this year, with values up 2.5 percent to just over $2 billion. The only city with a lower tax base than La Palma was Villa Park, where property values totaled just under $1.8 billion.

Orange County property owners have until Nov. 30 to appeal their tax assessments. Details on the appeals process are available at ocgov.com/gov/cob. Taxpayers also can reach the assessor’s office at 714-834-2727.