The annual cost of the Measure B will not exceed $20 per $100,000 in assessed (not market) property value. The assessed value of a home is determined each year by the Marin County Assessor, but it is generally based on the original purchase price of a home.

At the February 16, 2016, regular meeting the Board of Trustees passed Resolution 2016-3, which stated in section 3(f) that the tax levy authorized to secure the bonds of this election shall not exceed the Proposition 39 limits per $100,000 of taxable property in the District when assessed valuation is projected by the District to increase in accordance with Article XIIIA of the California Constitution.