- A supplemental assessment occurs when property is reassessed due to change in ownership (such as purchase of a new home) or new construction (such as adding a bedroom).
- File this type of appeal if you believe the supplemental assessment was initiated in error and/or the assessed value is inaccurate.
Filing Deadline: Within 60 days of mailing date or postmark date on the Notice of Supplemental Assessment, whichever is later
If you missed the opportunity to appeal your supplemental assessment, you can still file an appeal at the time our property becomes a part of the regular assessment roll between July 2 and November 30 in the year your property is first placed on the regular assessmentt roll, lor within the following three years. However, you may appeal only the new assessed value that appears on the regular roll (the new "base year value") because the supplemental assessment will have become final.