An assessment appeal is the formal process for challenging your property's assessed value if you believe it is incorrect or unfair. Property owners typically have a limited window after receiving their assessment notice to file an appeal with the assessment review board or equivalent tribunal. Successful appeals require evidence such as recent sales of comparable properties, professional appraisals, or documentation of property defects affecting value. If the board agrees your assessment is too high, your assessed value (and consequently your property taxes) will be reduced. The appeal process provides important recourse while maintaining system integrity through evidence-based review.