Broome County's regular 2026 grievance period is closed. The county calendar uses the fourth Tuesday in May, May 26 in 2026, and directs assessment disputes to the responsible local assessor rather than the county Real Property Tax Service. The City of Binghamton published a 4:30 p.m. May 26 receipt deadline and its own submission instructions. The $249 FairPath owner-guided evidence packet remains available now for every Broome County property. It can organize the official tentative or final roll, owner-verified corrections, comparable sales, photographs, condition records, local ratio calculations, and RP-524 source materials. A closed Grievance Day changes procedural guidance, not packet access. FairPath does not file RP-524, choose the owner's requested value, appear before a Board of Assessment Review, or promise that an untimely complaint will be accepted.
Assessment context: Identify the assessing city, town, or village before analyzing the parcel. Broome County Real Property Tax Services maintains assessment rolls, sales records, tax maps for 16 towns and seven villages, and technical support, but expressly says it does not handle assessment disputes. The county calendar uses March 1 as taxable-status date, May 1 for tentative town rolls, the fourth Tuesday in May for Grievance Day, and July 1 for final town rolls. The City of Binghamton publishes its own roll, sales reports, assessor instructions, and equalization rate. Review the tax map number, local assessment, land and improvement values, property inventory, exemptions, sales history, and applicable municipal assessment level. Do not compare raw assessments across assessing units without accounting for differing levels of assessment, and do not treat the tax bill or tax rate as the property's market value.
Filing process: New York uses Form RP-524 for assessment grievances outside New York City and Nassau County. File with the assessor or Board of Assessment Review responsible for the tentative roll, not with the Broome County tax-collection office. A separately assessing village can create a second assessment and require a separate complaint. Confirm the current assessor, accepted delivery methods, office hours, and receipt rule before filing. For 2026, Binghamton accepted regular mail, an email attachment sent to the city assessor, or deposit in the assessor's City Hall lobby mailbox, and required the complaint and supporting documents by 4:30 p.m. May 26. Its email subject line had to identify the owner, street address, and tax parcel numbers. The state process is free and an individual owner does not need a lawyer at the Board of Assessment Review stage, but the owner remains responsible for the value opinion, grounds, signature, delivery, and any appearance.
Evidence to review: Use the tentative-roll valuation date and the correct assessing unit. Obtain the subject record and document measurable discrepancies in living area, lot, units, finished space, outbuildings, condition, or improvements. Select recent similar local sales and record sale date and price, tax map number, location, size, age, style, lot, condition, and transaction circumstances. Keep market-value comparisons separate from assessment-equity comparisons and use the municipality's applicable level of assessment. Dated photographs, inspection findings, repair scopes, permits, and owner records can explain physical conditions not captured in the public inventory. Binghamton required supporting documents with the grievance application and allowed additional material only when requested, at least 48 hours before the hearing. Other Broome assessing units can publish different submission details, so use their instructions rather than applying Binghamton's email method countywide.
Current deadline guidance: 2026 regular grievance window closed: May 26. Broome County identifies the fourth Tuesday in May as annual Grievance Day, which was May 26 in 2026. The City of Binghamton likewise required RP-524 and supporting evidence by 4:30 p.m. May 26. A village that assesses property or another locally published calendar can require separate confirmation, so identify the assessing unit before relying on the general date.
Broome County maintains rolls and tax maps but tells owners that local assessors, not County Real Property Tax Services, handle assessments and disputes.
The county's recurring calendar places tentative town rolls on May 1, Grievance Day on the fourth Tuesday in May, and final town rolls on July 1.
Binghamton's 2026 instructions accepted mail, email attachment, or the assessor's City Hall mailbox and required all supporting documents with the initial filing.
Broome maintains tax maps for 16 towns and seven villages; an owner must still determine whether a village separately assesses property before assuming one RP-524 covers every assessment.
Official filing authority: Local city, town, or assessing-village assessor and Board of Assessment Review. https://www.broomecountyny.gov/realprop/
Source: Broome County, New York, Real Property Tax Services, https://www.broomecountyny.gov/realprop/. Reviewed 2026-07-29.
Source: Broome County Real Property Tax Services, Real Property Tax Calendar, https://www.broomecountyny.gov/realprop/calendar. Reviewed 2026-07-29.
Source: City of Binghamton Department of Assessment, 2026 Assessment Grievance, https://www.binghamton-ny.gov/government/departments/assessment-grievance. Reviewed 2026-07-29.
Source: New York State Department of Taxation and Finance, Grievance Procedures, https://www.tax.ny.gov/pit/property/contest/grievproced.htm. Reviewed 2026-07-29.
Source: New York State Department of Taxation and Finance, Assessment Grievance Forms, https://www.tax.ny.gov/forms/orpts/assessment_grievance.htm. Reviewed 2026-07-29.