Property Tax Grievances in Onondaga County, New York
Onondaga County does not have one countywide assessment grievance office or one filing calendar for every parcel. Town assessors, the City of Syracuse, and any separately assessing village control their own tentative rolls and Boards of Assessment Review. Most towns ordinarily use the fourth Tuesday in May, which fell on May 26 in 2026, while Syracuse uses a much earlier January period. Those ordinary 2026 windows have passed. The Syracuse Board page currently combines a 2026/27 roll label with calendar text that contains a conflicting year, so its exact dates should be verified directly before anyone relies on them. FairPath's owner-guided evidence packet remains available year-round for every Onondaga County homeowner. It can organize official records, owner-verified corrections, selected comparable sales, condition evidence, and source notes. FairPath does not choose the requested value, file RP-524, appear at a hearing, or predict a reduction.
Assessment context: Start by identifying the assessing unit, not merely the county. Onondaga County Real Property Tax Services publishes separate tentative and final rolls for nineteen towns and provides Image Mate property information for properties outside the City of Syracuse. The county says online town information comes from the town assessors and can change during the year; it does not become final for taxing purposes until the town final roll is officially filed on or about July 1. Syracuse maintains a separate city assessment department and final roll for more than 41,000 properties. Record the tax map number, assessing municipality, property class, land and total assessment, inventory, and roll stage. Then compare the public facts with the homeowner's documents. A tax bill, countywide median, or raw assessment in another municipality is not by itself a market-value conclusion. If a village assesses separately, keep its roll, assessor, and calendar distinct from the town record.
Filing process: New York uses Form RP-524 outside New York City and Nassau County. The complaint belongs with the assessor or Board of Assessment Review for the city, town, or assessing village that placed the current tentative assessment on the roll. State guidance says there is no fee for the administrative grievance and a mailed complaint must be received by Grievance Day; a postmark alone does not preserve a late filing. Most towns use the fourth Tuesday in May, but shared-assessor arrangements and local calendars can move the date. Syracuse says it accepts grievances only during the last two weeks of January, requires an original signature, and uses mail or in-person delivery to City Hall, Suite 130. Because the city's currently displayed schedule contains inconsistent year text, confirm the live dates and hours with the Assessment Department. After a Board determination, eligible homeowners may consider Small Claims Assessment Review, which the state describes as a $30 judicial route, or tax certiorari. Those later routes have separate eligibility and deadlines and are not FairPath filing services.
Evidence to review: Organize evidence around the current tentative roll and the correct local assessment level. New York's grievance grounds include an excessive, unequal, unlawful, or misclassified assessment. Download the subject's roll entry and property record, then flag measurable discrepancies such as living area, units, garage, lot dimensions, property class, finished space, or an improvement that no longer exists. For market or unequal-assessment context, select nearby arm's-length sales or assessment records from the same assessing municipality and explain differences in location, use, size, age, quality, and condition. Do not mix Syracuse and town records without accounting for their different assessing authorities and assessment levels. Dated photographs, inspection findings, contractor scopes, permits, surveys, and owner records can document physical condition or inventory errors, but a repair estimate does not automatically reduce market value dollar for dollar. Keep exemption or classification questions separate from valuation evidence. The homeowner should review every factual statement and verify local submission requirements before any material reaches the assessor or Board.
Current deadline guidance: 2026 closed: May 26 in most towns; Syracuse used a separate January period. Most Onondaga County towns ordinarily use the fourth Tuesday in May, which was May 26 in 2026. The City of Syracuse uses its own January review period, and assessing villages can use separate calendars. Syracuse's current Board page contains conflicting year text alongside its displayed 2026/27 schedule, so owners must confirm the exact city or village dates with the responsible assessor rather than copying a countywide date.
The county publishes 2026 tentative and final assessment rolls separately for nineteen towns. Syracuse publishes its own city roll, so a county-town roll search is not a substitute for the city record.
Syracuse uses an earlier January Board of Assessment Review period than the ordinary May town calendar. Its current webpage contains conflicting year text, making direct date confirmation a required verification step.
A separately assessing village can create a second assessment and grievance calendar. An RP-524 filed with a town does not automatically contest a separate village assessment.
Onondaga County's Image Mate information for towns may change before the official final roll. Preserve whether a cited value came from a tentative roll, final roll, or live informational display.
Official filing authority: Local city, town, or assessing village assessor and Board of Assessment Review. https://onondaga.gov/rpts/assessment-information/
Source: Onondaga County Real Property Tax Services, Assessment Information, https://onondaga.gov/rpts/assessment-information/. Reviewed 2026-08-08.
Source: Onondaga County Real Property Tax Services, 2026 Tentative and Final Assessment Rolls, https://onondaga.gov/rpts/assessment-rolls/. Reviewed 2026-08-08.
Source: Onondaga County Real Property Tax Services, Property Assessment Information, https://onondaga.gov/rpts/property-tax-info/. Reviewed 2026-08-08.
Source: New York State Department of Taxation and Finance, Grievance Procedures, https://www.tax.ny.gov/pit/property/contest/grievproced.htm. Reviewed 2026-08-08.
Source: City of Syracuse, Board of Assessment Review, https://www.syr.gov/Boards-and-Commissions/Municipal-Boards/BAR. Reviewed 2026-08-08.
Source: Onondaga County Clerk, County Clerk Frequently Asked Questions, https://onondaga.gov/clerk/faqs/. Reviewed 2026-08-08.
Visit FairPath with JavaScript enabled for the full experience.