The Article 78 statute of limitations is four months from the date the government decision you want to challenge becomes final and binding on you. That default comes from CPLR 217(1).1New York State Senate. New York Civil Practice Law and Rules 217 Certain categories of cases, especially local zoning and land use decisions, carry much shorter windows, some as tight as 30 days. Courts enforce these deadlines strictly. A petition filed a day late is dismissed no matter how strong the underlying claim.
When the Four-Month Clock Starts
The hard part is not the length of the deadline. It is figuring out the day it begins. CPLR 217(1) starts the clock when the determination becomes “final and binding” on you, or when the agency refuses your demand that it perform a duty it owes you.1New York State Senate. New York Civil Practice Law and Rules 217
New York courts apply a two-part test for finality. The agency must have reached a definitive position that causes you actual, concrete harm, and no further steps within the agency could prevent or meaningfully reduce that harm.2CaseMine. Best Payphones, Inc. v Department of Information Technology and Telecommunications of the City of New York Both conditions have to be satisfied. Until they are, the clock has not started; once they are, it has.
In practice, the trigger date usually turns on notice. When the agency mails a written decision, the date you receive it (or are deemed to have received it) starts the period. When notice is given orally, the oral notification can be enough. A 2025 Court of Appeals decision confirmed that where a petitioner was orally informed of a determination in a specific month, the four months ran from that notification.3New York State Court of Appeals. Matter of Dourdounas v City of New York If communications are informal and no formal written decision has been issued, courts look at when you knew or should have known the agency’s position was definitive.
Internal Appeals and Exhaustion
If the agency’s rules require you to use an internal appeal before going to court, a decision generally is not “final and binding” until you have completed that process. You cannot file an Article 78 challenge before exhausting mandatory administrative remedies, and once you do reach that point, you must act within four months or lose the right entirely.4Justia. Walton v New York State Department of Correctional Services
Optional internal review is different. A voluntary reconsideration request that the agency’s rules do not require may not pause the four-month period at all. Whether an appeal is mandatory or optional depends on the specific agency’s rules, so check them before assuming an internal complaint has stopped the clock.
Ambiguous Decisions
Not every government action arrives labeled as final. Preliminary rulings, conditional approvals, and informal communications create real confusion. The question courts ask is whether the agency has locked in a position that inflicts harm you cannot undo through further agency proceedings. If the answer is yes, the four months have started running whether or not the agency called its action final.
Shorter Deadlines That Override the Four Months
CPLR 217(1) applies “unless a shorter time is provided in the law authorizing the proceeding.” Several New York statutes do exactly that, and zoning and land use is where the compressed deadlines cluster.
To challenge a town zoning board of appeals decision, you have 30 days after the board files its decision with the town clerk.5New York State Senate. New York Town Law 267-C Village zoning board decisions carry the same 30-day window measured from the filing with the village clerk.6New York State Senate. New York Village Law 7-712-C Similar 30-day deadlines apply under the General City Law for city-level zoning decisions, and additional shortened deadlines exist under the Town Law, Village Law, and General City Law for challenges to planning board approvals involving special use permits, site plans, and subdivisions.
The critical wrinkle: the 30 days run from the date the board files its decision with the municipal clerk, not from when you personally learn about it. If you are waiting on a letter and the board already filed two weeks ago, half your window is gone.
The Narrow Tolling Exception
CPLR 217(1) provides a limited extension for petitioners under a legal disability when the decision became final. If you were younger than 18 or legally incapacitated at that time, you can seek court permission to file within two years instead of four months.1New York State Senate. New York Civil Practice Law and Rules 217 This is not automatic. It requires leave of court.
The mechanics come from CPLR 208. For limitations periods under three years, which includes the four-month Article 78 deadline, the time is extended by the length of the disability.7New York State Senate. New York Civil Practice Law and Rules 208 A parent or guardian acting on a child’s behalf does not cut off the child’s own tolling protection, because the child remains the real party in interest.
Outside disability, there is no general “good cause” exception. Not knowing about the deadline does not extend it. Believing the agency was still deliberating does not extend it. The only other recognized ground is agency conduct like fraud or concealment that prevented timely filing.
Filing Alone Does Not Stop the Clock
Meeting the deadline means filing the petition and serving the respondent. For proceedings subject to a statute of limitations of four months or less, service must be completed no later than 15 days after the limitations period expires.8New York State Senate. New York Civil Practice Law and Rules 306-B That is tighter than the general 120-day service period for ordinary civil actions.
When the challenge targets a state agency or state official, you must also serve the Attorney General’s office. Service is made by delivering the notice of petition or order to show cause to an assistant attorney general at the AG’s office in the county where the proceeding is venued, or at the nearest AG office if none exists in that county.9New York State Senate. New York Civil Practice Law and Rules 7804 Forgetting this extra step is a common and avoidable way to lose an otherwise timely case.
What Happens if You Miss It
The petition gets dismissed. Courts treat the four-month deadline as jurisdictional, so no judge has discretion to hear a late case, however meritorious it may be. This is where most late filers get hurt. They assume more time exists because the decision felt informal, because they were still negotiating with the agency, or because they filed an internal complaint that has not been resolved. None of those circumstances reliably pauses the clock unless the agency’s rules make the internal process mandatory.
If there is any doubt about when the period started, the safest move is to file the Article 78 petition within four months (or 30 days, in zoning cases) and pursue any internal process at the same time. Consulting an administrative law attorney before that window closes is the difference between a case a court will hear and a case the court will not.