Under Proposition 13 (1978), a property’s base year assessed value is set when the property changes ownership.
Data from the 2015 to 2016 Alameda County tax assessor’s annual report shows that 75.11 percent of properties in Alameda County have a base year of 1991 or later (to 2015), compared to 69.92 percent of properties with a base year of 1991 or later (to 2010) in the 2010 to 2011 annual report.
As measured by assessed value, properties in Alameda County with a Proposition 13 base year of 1991 or later now represent 92 percent of the total roll, compared to 89 percent as reported in the 2010 to 2011 assessor’s report.
Looking at just the most recent 10 years, properties with a base year of 1995 through 2015 now represent 88 percent of the total assessed value, compared to properties with a base year of 2001 through 2010 representing 68 percent of the total assessed value, in the 2010 to 2011 annual report.
The tax assessor is expected to finalize the role for the 2016 to 2017 tax year next month, in June.