Town Assessor

Services > Assessment Complaints & Grievances

Annual Assessment Filing Period: June 1 – third Tuesday in June

Any person aggrieved by an assessment (e.g., an owner, purchaser, or tenant who is required to pay the real estate taxes pursuant to a lease or written agreement) may file a complaint. The complaint must be filed in the city, town or village in which the property is located. For real property located within the Town of Mamaroneck, that complaint can be filed with the Town Assessor or the Board of Assessment Review. If you're not sure where your property is officially located, visit How do I know if I live in "The Town"?

Filing Requirements for
Complaints on Real Property Assessments

The application form and instructions, RP-524 and RP-524-INS, are available from NYS Department of Taxation and Finance. You may complete the complaint form yourself or have your representative or attorney complete it for you.

  • Assessments Eligible for Review

    The only assessment that may be reviewed is the assessment on the current tentative assessment roll completed by the local assessor. As a general rule, a separate complaint should be filed for each separately assessed parcel.

  • Filing Methods

    For real property located within the Town of Mamaroneck, complaints may be filed
    in-person or by mail from June 1 to the third Tuesday in June.

    To file a complaint in-person, submit your complaint to the Town Assessor or with
    the Board of Assessment Review.

    To file a complaint by mail, send your complaint to the Town Assessor's office:

Susan M. Thomas, Assessor
Town of Mamaroneck
740 West Boston Post Road
Mamaroneck, NY 10543

  • Filing Deadlines

    Complaints filed in person – either with the Town Assessor or with the BAR – must be filed no later than the third Tuesday in June. Complaints filed by mail must be postmarked no later than the third Tuesday in June.

    Failure to file your complaint in a timely manner precludes your right to administrative
    and judicial review.

Hours

The Town Assessor's office, located on the second floor of the Town Center (Rm 207), is open weekdays:

Winter Hours
Labor Day through Memorial Day
8:30 am - 4:30 pm

Summer Hours
Memorial Day through Labor Day
8:30 am - 4:00 pm

Holiday Schedule

Overview

The Town Assessor is responsible for reviewing and determining the value of all property within the Town and insuring the accuracy of property assessment maps. The value of all parcels determines the Town's assessment roll which is the basis for annual tax …

more ›

Contact

Email
townassessor@townofmamaroneck.org

Phone
(914) 381-7820

Fax
(914) 381-2111

Department Head
Susan M. Thomas
Assessor