Find out what their assessed values are or the prices at which they sold, if they have sold recently. Establish a cooperative, not an adversarial, relationship with the assessor's office. The office can and will provide you with the information you need to evaluate your assessment, find similar properties, and file your appeal. Be sure to follow instructions carefully. A missed deadline or incorrect filing can cause an appeal to be dismissed.
Every jurisdiction has an appeals process mandated by law.
The first step is usually an informal meeting with someone in the assessor's office. Information on the mechanics and deadlines for setting up an appointment should be included with your assessment notice, along with similar information for the entire appeals process. During or before this informal meeting, you should review the property record form on your property to be sure all the information is correct. Know the lot size, number of stories, square footage, and condition of your property. If you have an accurate survey of your property, be sure to bring it with you to the meeting.