Property Tax Grievances in Westchester County, New York
Westchester owners file with the town, city, or separately assessing village responsible for the roll, not with a single countywide appeal office. For towns, the 2026 third-Tuesday Grievance Day was June 16, but city and village calendars can differ. Those ordinary windows are now closed. The FairPath owner-guided packet is available year-round to organize the current roll, owner-approved property corrections, comparable evidence, condition records, calculations, and official source notes. FairPath does not file RP-524, select a claim or requested assessment, contact the assessor or Board, represent the homeowner, or predict an assessment change, tax savings, or outcome.
Assessment context: Begin with the responsible municipality's tentative roll and identify the parcel, property class, exemptions, assessed value, local assessment ratio or uniform percentage, valuation date, and descriptive property facts. Westchester contains towns, cities, villages, and separately assessing villages, so a county address alone does not establish the filing authority or calendar. Commuter access, school district, Hudson River or Long Island Sound influence, village services, municipal water or well, sewer or septic, acreage, topography, flood exposure, cooperative or condominium form, multifamily use, and neighborhood can separate nearby markets. Raw assessments from municipalities using different assessment percentages are not automatically comparable.
Filing process: New York generally uses Form RP-524 for this local Board of Assessment Review process. Identify the assessor that created the tentative assessment, then confirm the locally posted roll date, Grievance Day, assessor sitting dates, Board hours, required copies, filing address, appointment requirements, and accepted delivery method. Scarsdale and Peekskill each posted June 16 for 2026, while their official materials illustrate that the municipality—not a generic county page—supplies the operational instructions. A separately assessing village can create a second assessment and grievance. The homeowner provides the claimed grounds, value estimate, requested assessment, signature, and facts. SCAR and judicial review are later routes with separate eligibility, fees, and deadlines that FairPath does not choose or file.
Evidence to review: Use the subject's tentative roll and property record as the anchor. Document measurable errors in living area, lot, units, legal use, basement finish, garage, pool, additions, class, exemptions, water and sewer, or other improvements. Select arm's-length sales or assessment records from the same assessing unit and relevant submarket, then explain differences in school district, rail access, village services, waterfront influence, topography, lot utility, property form, renovation, effective age, and condition. Apply the correct municipal assessment percentage before drawing conclusions from assessed values. Dated photographs, surveys, permits, inspections, appraisals, contractor scopes, and owner records can establish physical facts. Repair cost is not an automatic dollar-for-dollar value adjustment. Owner facts remain attributed and require homeowner review before packet inclusion.
Current deadline guidance: 2026 local grievance windows are closed; verify the 2027 municipal calendar. Westchester towns generally publish tentative rolls June 1 and hold Grievance Day on the third Tuesday in June; in 2026 that date was June 16. Cities and separately assessing villages may use different calendars, so the responsible municipality's notice and receipt instructions control.
Westchester town grievance dates follow a special third-Tuesday-in-June pattern, but cities and assessing villages may differ.
The assessing municipality controls the roll, receipt method, appointment rules, and Board hours; the county name alone is not enough.
Municipal assessment percentages and valuation dates must be recorded before comparing assessed values across Westchester.
NYC commute, school district, Hudson or Sound influence, municipal services, septic and well, topography, and property form can define separate markets.
Preserve the tentative-roll page, parcel identifier, municipality, assessment percentage, publication date, and retrieval date for each official record.
Official filing authority: Applicable Westchester town, city, or assessing-village assessor and Board of Assessment Review. https://www.tax.ny.gov/pit/property/munidataportal.htm
Source: New York State Department of Taxation and Finance, Contesting Your Assessment in New York State, https://www.tax.ny.gov/pdf/publications/orpts/grievancebooklet.pdf. Reviewed 2026-08-09.
Source: Village of Scarsdale, Challenging Your Assessment, https://www.scarsdale.gov/496/Challenging-your-Assessment. Reviewed 2026-08-09.
Source: Village of Scarsdale, 2026 Grievance Day Calendar, https://www.scarsdale.gov/Calendar.aspx?EID=1799. Reviewed 2026-08-09.
Source: City of Peekskill, Assessment Roll Dates, https://www.cityofpeekskillny.gov/192/Assessment-Roll-Dates. Reviewed 2026-08-09.
Source: Town of Somers, Assessor, https://www.somersny.gov/departments/assessor. Reviewed 2026-08-09.
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