To challenge the assessment, first look for obvious mistakes in the notice. Make sure the address and description of your property is correct. It may be necessary to look up the information about your home at the assessor's office. Check to make sure the number of rooms, bathrooms, square footage, etc. is accurate, and make a note of any discrepancies. Next, check to see if you qualify for a special tax break.
Some jurisdictions provide tax breaks to certain categories of property owners.
Lastly, make sure the assessor has any information about damage to the property, such as flood or fire damage. If any of these conditions apply, ask your local assessor's office how to file an appeal and note any of these problems in your appeal. Even if none of these special conditions apply, investigate whether the market value determined by the assessor is higher than the true market value of your property. Local real estate agents or the county registrar of deeds should be able to provide recent sales of comparable or similar properties in your area. Once you have the information you need to protest your assessment, you will either be required to fill out a form or make an appointment with the assessment board.