Generally an assessment card listing your regular yearly assessment is sent to each property owner in January or February every year. An appeal of your regular assessment must be filed before April 1st. Generally if you do any major renovation, or the nature of a property changes (i.e. from exempt to taxable), during any given year, you may receive an added or omitted assessment.

Those assessments are sent in early November. An appeal of an added or omitted assessment must be filed before December 1st of the year in which you received the assessment.