Middlesex County's regular 2026 appeal period has ended. The county required physical receipt by 4:15 p.m. April 1 for ordinary municipalities and by 4:15 p.m. May 1 in a revalued or reassessed municipality. The state's current list identifies Dunellen, Middlesex Borough, and Piscataway for 2026. A postmark was not a received date, and a county copy without the fee was not considered filed. Middlesex also announced that it would not hold virtual tax appeal hearings. Owners preparing for 2027 should wait for the new assessment notice, municipal implementation list, and filing packet before selecting a deadline. FairPath's role is limited to manual organization of records, sales, and source links; it does not file, determine market value, attend hearings, or cure a late 2026 petition.
Assessment context: Middlesex includes dense New Brunswick and Perth Amboy properties, established suburban neighborhoods, multifamily and industrial uses, and lower-density growth areas. A useful analysis starts with the exact municipality, zoning, use, block, lot, qualifier, class, land and improvement amounts, living area, lot, age, and property-card features. The county explains Chapter 123 and warns that an assessment may remain unchanged when the proved ratio falls within the common-level range; an assessment can also increase when the ratio falls below the applicable level. For 2026 evidence, Middlesex identified October 1, 2025 as the valuation date and the pretax-year sales period as the central comparison window. Current-year sales generally fit the next appeal year better. Verify whether a transfer is coded usable and investigate any non-arm's-length circumstances before relying on it.
Filing process: The Middlesex packet required the Board's original petition and fee, with separate copies to the municipal assessor and municipal clerk. It warned owners not to send all three copies to the Tax Board and prohibited faxed applications. The county copy had to be physically in the Board office by 4:15 p.m.; carrier delay and a timely postmark did not satisfy the rule. A separate petition generally applies to each property. Middlesex's forms page provides the A-1 form, commercial income-and-expense report, Chapter 123 tool, non-usable sale codes, and hearing schedule. For 2027, verify the packet version, exact-change or payment instructions, office hours, hearing mode, service addresses, and municipal deadline. Keep the signed original, fee proof, each served copy, delivery confirmation, evidence exchange, and hearing correspondence together.
Evidence to review: Middlesex calls recent sales of similar nearby properties the most credible evidence and recommends a minimum of three and maximum of five sales. Record the deed date, price, block and lot, property style, exterior-measured living area, lot, age, zoning use, amenities, condition, and distance from the subject. Avoid unexplained comparisons between different styles, eras, or sizes. Check SR-1A records and non-usable codes; if a sale has an unusual relationship, foreclosure, bankruptcy, or financing condition, provide facts showing why it still reflects the market. Send one evidence copy to the Board, one to the assessor, and one to the clerk at least seven calendar days before the hearing. Dated photographs can illustrate both the subject and comparables. Appraisal and condition records should support the October 1 value, not merely later repair costs.
Current deadline guidance: April 1, 2026; May 1 for Dunellen, Middlesex Borough, and Piscataway. Middlesex required regular 2026 petitions to be physically received with the fee by 4:15 p.m. April 1. Dunellen, Middlesex Borough, and Piscataway appear on the state 2026 revaluation and reassessment list and used the May 1 rule. Both regular windows are closed.
Dunellen, Middlesex Borough, and Piscataway were the county's state-listed 2026 revaluation or reassessment municipalities and therefore followed the May 1 rule rather than ordinary April 1 timing.
Middlesex used a 4:15 p.m. physical-receipt cutoff and required the fee with the Board copy. Postmark dates and documents left elsewhere in the administration building did not count.
The Board announced no virtual tax appeal hearings. A future petitioner should plan for attendance and verify whether that in-person-only posture remains in effect for 2027.
Middlesex's packet ties 2026 comparables to October 1, 2024 through September 30, 2025 and says current-year sales are generally evidence for the next year's appeals.
Official filing authority: Middlesex County Board of Taxation. https://www.middlesexcountynj.gov/government/departments/department-of-finance/board-of-taxation/tax-appeals
Source: Middlesex County Board of Taxation, 2026 Tax Appeal Filing Packet, https://www.middlesexcountynj.gov/home/showpublisheddocument/9589/639039914836300000. Reviewed 2026-07-15.
Source: Middlesex County Government, Tax Appeal Forms and Guidelines, https://www.middlesexcountynj.gov/government/departments/department-of-finance/board-of-taxation/tax-appeals. Reviewed 2026-07-15.
Source: New Jersey Division of Taxation, 2026 Approved Revaluations and Reassessments, https://www.nj.gov/treasury/taxation/pdf/lpt/revaluation/2026RevalList.pdf. Reviewed 2026-07-15.
Source: New Jersey Division of Taxation, 2026 Common Level Ranges, https://www.nj.gov/treasury/taxation/pdf/lpt/chap123/2026CH123.pdf. Reviewed 2026-07-15.