• Role

The Assessor's mission is to provide fair and equitable valuations to all real property (residential, vacant land, commercial & industrial) for the purpose of property taxations for City, County, Library and School taxes. This includes, but is not limited to, the valuation of all real property, the collection of property inventory, maintenance of ownership information, and implementation of all whole and partial property tax exemptions.

Since the City’s inception in 1892, the Department of Assessment has filed and maintained all property deeds. It is in this office that the City’s tax maps are maintained and updated on a monthly basis. Current and historical information about every house, building, park and vacant lot is kept in this department’s archives.

The Assessor’s Office is currently open to the public.  Information is available on this website. However if you need further assistance or have questions or concerns our staff is available to assist by calling the office at (914) 665-2325 or (914) 665-2329 during normal hours 8:30AM to 4:30PM.

For address changes please go the Address Change page.

You can now submit changes instantly and electronically via PandaDoc. We also offer options to mail or email them in.

For 2020 Grievance Information go to this page. Grievance Page

Exemption applications, [which were sent to you] are due by May 1, should be mailed to:

Department of Assessment City Hall

Room # 8 Mount Vernon, NY 10550 or sent via electronic email to:


Parcel Information

Link to Parcel Information SCA

Documents & Forms

School Tax Relief (STAR)
  1. New applicants who qualify for Basic or Enhanced STAR
    • You will register with New York State instead of applying with your assessor.
    • You will receive a STAR credit in the form of a check rather than receiving a property tax exemption (if you qualify for STAR). The dollar value of the credit will be the same as the property tax exemption. You may register on line or by phone 518-457-2036.
  2. New applicants who qualify for Enhanced STAR (or who will qualify in the future)You do not need to register separately to receive the Enhanced benefit if you’ve already registered to receive the Basic benefit.When you register for the STAR credit, the Tax Department will automatically review your application to determine whether you are eligible for the Basic or Enhanced STAR benefit amount. If you are receiving a STAR exemption and purchased your current home prior to May 1, 2014, you don’t need to register; you will continue to receive the STAR exemption. If you purchased your home between May 1, 2014, and August 1, 2015  you need to register to receive the STAR credit if:
    • you bought your home after the 2015 STAR application deadline, or
    • you did not apply for the STAR exemption for your home by the 2015 application deadline.

    If you purchased your home after August 1, 2015 you will need to register for the STAR credit. You may register on line or by phone 518-457-2036If you are already receiving the Basic or Enhanced STAR exemption on your tax bill you may apply directly with the Department of Assessment for the following changes:

    • You are receiving the Enhanced STAR exemption and have not enrolled in the Income Verification Program.
    • You are receiving the Basic STAR exemption and wish to apply for the Enhanced STAR exemption
    • You are seeking to restore a STAR exemption that you received during the 2015-2016 school year but that was subsequently discontinued due to failure to meet the income standard.
    • You continue to own property but have filed a new deed due to:
      • marriage
      • divorce
      • surrender of interest by a co-owner
      • survivorship
      • trusts
      • life estates

      If you qualify to apply for the Basic STAR you may use form RP-425-B. You must also submit proof of residence and 2019 federal or state tax return.


      If you qualify to apply for the Enhanced STAR you may use form RP-425-E.
      You must also submit proof of residence, proof of age and 2019 federal or state tax return.


      For annual renewal of the Enhanced STAR you may use form RP-425-Rnw. You must also submit 2019 federal or state tax return.


      ***New Requirements for Enhanced STAR***

      New for 2019: If you’re applying or reapplying for the Enhanced STAR exemption, you must enroll in the Income Verification Program (IVP). You only need to enroll once, and you’ll receive the exemption each year, as long as you’re eligible. Please use form RP-425-IVP.


       Senior Exemption

      Real property Tax law Section 467 provides qualifying senior citizens with incomes not exceeding $37,399.99, age 65 and older may have their property taxes reduced by up to 50%. In order to receive this exemption senior citizen homeowners must apply and submit proof of age and income to the Assessment office by no later than May 1st of each year.

      Senior Citizen Exemption RP-467
      Instructions for Senior Citizen Exemption RP-467
      Complaint on Real Property Assessment
      2020 Board of Review

      STAR Program

      NY State School Tax Relief program provides reductions from school property taxes for owner-occupied, primary residences such as homes, condominiums, cooperative apartments, mobile homes and farm homes. New Yorkers who own and live in their one-, two-, or three-family home, condominium, cooperative apartment, mobile home or farm home are eligible for a partial exemption on their primary residence.

      There are two parts to the STAR program: the “Enhanced” STAR exemption and the “Basic” STAR exemption.

      Enhanced STAR

      Senior citizens, ages 65 years or older, with combined incomes that do not exceed $90,550 may qualify for a greater (“enhanced”) exemption. The property must be owned by a husband and wife, or by siblings, with only one of them being at least 65 years 0f age by December 31st of the year in which the exemption will begin, and have a combined income of no more than $90,550.

      Basic STAR

      All other New Yorkers who own and live in their one, two, or three-family home, condominium, cooperative apartment, mobile home or farm home also are eligible for a STAR exemption on their primary residence, regardless of their age.  The combine income of all owners and spouses must be less than $500,000.

      STAR filing deadline is May 1st of each year.

      Veterans Exemption

      Real Property Tax Law, Section 458, provides a partial property tax exemption to those homeowners meeting qualifying veterans criteria, for example, service in the military or certain other persons designated in the Real Property Tax Law.

      Proof of service must be provided when applying in addition to proof of ownership of the property being claimed for exemption. Exemptions are granted only for portions of property used for primary residence purposes. Applications must be submitted by no later than May 1st of each year.

      For more information, go to the CMV Veterans Service Agency.

      Veterans Exemptions deadline is on or before May 1st.
      Veterans Exemption Application
      Alternative Veterans Exemption Application
      Cold War Veterans Exemption Application

      City of Mount Vernon Tax Assessment Rolls
      2020 Final Assessment Roll


      Useful Links

      Pay your School Taxes