If you disagree with your Assessed Value You can challenge your Assessed Value by appealing with the NYC Tax Commission, an independent agency. The Tax Commission can reduce your property’s assessment, change its tax class, and adjust exemptions. Before filing with the Tax Commission, look at your Notice of Property Value (NOPV) and see if it has a line called ”Effective Market Value”. You must prove that your current market value is less than the Effective Market Value for you to win your Tax Commission appeal. The deadline for appealing your Assessed Value to the Tax Commission is March 1 (Class 2, 3 and 4 properties) or March 15 (Class 1).
If you believe your property description is not correct
You can ask Finance to review your property’s description or bring other errors to our attention by filing a request form on our website. The deadline to file the form is March 15 for Class 1 and 2 properties and April 1 for Class 4 properties. You can find our description of your property on our website. It is important to remember that asking for a Finance Review is not a substitute for appealing your Assessed Value with the Tax Commission. Forms & Reports | 
What to Do if You Believe Your Notice of Property Value (NOPV) Has the Wrong Information
