Contra Costa County will benefit from an increase in property tax dollars, as the assessed value of taxable property increased almost 5 percent from last year to this year, Assessor Gus Kramer announced August 7. “The increase to the local tax base for 2020-21 is nearly $10.5 billion,” Kramer wrote in a letter to the county Board of Supervisors. “This represents a 4.87 percent increase in assessed value and brings the total net local assessment roll to over $225.7 billion.…