Page 41 - Homeowners Manual - Santa Clara County

Supplemental Tax (applicable in select States)
In California, when there is a change in ownership of real property or when new construction is completed, the
County Assessor will appraise the property changing ownership, or the new construction at its full cash value
as of the date the change in ownership occurs or the new construction is completed�* The appraised value then
becomes the new base year value for the property�

There may be one or two supplemental assessments made depending on the date when the change in
ownership takes place or when the new construction is completed�

If the change in ownership occurs, or the new construction is completed after January 1, but before May 31,
there will be two supplemental assessments� The first assessment is the difference between the new base year
value and the taxable value on the current roll� The second assessment will vary depending on the triggering
event�

For new construction, the second assessment is the value change due to the new construction� For a change
in ownership of a full ownership interest, the second assessment is the difference between the new base year
value and the taxable value to be enrolled on the roll being prepared� For a change of a partial ownership
interest, the second assessment is the difference between the total of the new base year value for the interest
conveyed, plus the taxable value of the rest of the property on the roll being prepared, and the taxable value of
the entire property on the roll being prepared�

If the change in ownership occurs, or the new construction is completed on or after June 1, but before the
following January 1, there will be one supplemental assessment made for the difference between the new base
year value and the taxable value on the current roll�

*Certain property and transfers may be exempt from reappraisal for supplemental taxes�

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