How long do I have to file a notice of claim in Maricopa County?

180 days from when the claim accrues, which usually means the date of the injury. The notice must be served on the correct authorized official, describe the factual basis, and state a specific settlement amount with supporting facts. The lawsuit that follows must be filed within one year. Both deadlines are enforced strictly, and courts dismiss otherwise valid claims over them routinely.

What happens if I send the notice to the wrong office?

If the 180 days pass without the correct official being served, the claim is barred, and delivering it to a receptionist, a department, or even the entity's lawyer does not necessarily count. Arizona's service rules name the authorized recipient for each entity type: the clerk of the board of supervisors for the county, the city clerk for a municipality, the attorney general for the state. When ownership is uncertain, notice every plausible entity.

Why does the notice need an exact dollar amount?

Because the statute says the government must be able to settle by paying it. The Arizona Supreme Court's Deer Valley decision held that qualifiers like 'no less than' or 'approximately' make the amount unascertainable and void the notice. The number has to be specific, supported by stated facts, and set high enough to cover an injury whose full cost may not be known yet, which is exactly why it deserves a lawyer's judgment.

Does the 180-day rule apply to school districts and Valley Metro?

Yes. School districts, transit authorities, flood control and health care districts, and every other political subdivision get the same protection as the county and the cities. A school bus crash, a playground injury, or a transit fall all start with a timely, correctly served, sum-certain notice. Claims for injured children have distinct accrual rules that can extend timing, but no one should rely on that without advice.

I am past 180 days. Is my claim dead?

Often, though not always. Minors' claims run on different timing, accrual can be later than the injury date where the cause was not reasonably knowable, and the doctrine has narrow exceptions. Whether one applies to your facts is a legal question worth an immediate, free answer rather than an assumption in either direction. Call before deciding the deadline decided for you.

Maricopa County Notice of Claim

FILL OUT THE FORM BELOW
TO REQUEST YOUR CASE REVIEW

Suing a Government in Maricopa County Starts With One Document

Before you can sue Maricopa County, the City of Phoenix, a Valley school district, or any other public entity here, Arizona requires a written notice of claim within 180 days of the injury.

It must reach the specific official authorized to receive it, state the facts, and name a specific amount you would accept in settlement.

Miss the deadline, the target, or the number, and the claim is barred no matter how strong it was.

Courts enforce this statute strictly, and the defense checks compliance before it checks anything else.

Call (888) 713-6653 for a free review while your 180 days are still running.

180 days from the injury to serve the notice, under A.R.S. § 12-821.01
Only the authorized official counts; a generic government office does not
It must state a specific settlement amount; hedged numbers void the notice
A lawsuit must then be filed within one year, half the ordinary deadline
Maricopa County claims can involve the county, 25+ cities and towns, and dozens of districts

Which Government Hurt You? The Maricopa Defendant Map

The Valley's public entities overlap block by block, and identifying the right one is the notice's first job. A crash with a sheriff's vehicle points at the county. A fall on a downtown sidewalk points at a city. A child hurt on a playground points at a school district, and a bus injury at a transit agency. Roads are the classic trap: the same intersection can involve a state highway, a county-maintained road, and a city's signals, each answering to a different government.

Service follows the entity. Arizona's rules route each notice to a specific officeholder:^[1]

Public Entity	Where the Notice Goes	Typical Maricopa Claims
Maricopa County	Clerk of the Board of Supervisors	County road defects, sheriff's office vehicles, jail injuries
A city or town (Phoenix, Mesa, Scottsdale, Glendale, and the rest)	The city or town clerk	Police vehicles, signal and sidewalk claims, city parks and pools
The State of Arizona (ADOT, DPS, a state university)	The Arizona Attorney General	State highway design and maintenance, state vehicles
A school district	The district's governing board	School buses, campus injuries, negligent supervision
Special districts (transit, flood control, health care)	The district's own authorized officer	Valley Metro service claims, flood-control facilities, district hospitals

Public employees can require notice too, served on the employee individually, when the claim names them alongside the entity. When ownership is unclear, the safe practice is noticing every plausible entity inside the window rather than betting the case on one guess.

Deer Valley's Sum-Certain Rule: Why Hedged Numbers Kill Arizona Claims

A.R.S. § 12-821.01 requires the notice to contain a specific amount for which the claim can be settled, plus the facts supporting it.^[2] The Arizona Supreme Court enforced that language without mercy in Deer Valley Unified School District v. Houser: a claimant whose notice described damages of "no less than" and "approximately" certain figures had, the court held, stated no amount the district could simply accept, and the claim was dismissed.^[3]

The rule's logic is that the government must be able to settle by paying the stated number, so any qualifier that leaves the number open defeats the notice. In practice the judgment call arrives well before day 180, with the supporting facts laid out inside the notice itself.

The hardest sentence in a government claim is the one with the dollar figure in it. It gets written months before the medicine is finished, high enough to cover what is coming and flat enough to satisfy the statute, and we give that sentence great care. Setting it too hedged and the statute voids it, too low and it becomes the ceiling.

After the Notice: Arizona's One-Year Deadline to Sue a Public Entity

The entity has 60 days to respond, and silence is a denial. The lawsuit itself must then be filed within one year of when the claim accrued, half the ordinary Arizona limitations period.^[4] Between the 180-day notice, the 60-day response window, and the one-year filing bar, a government case burns its calendar twice as fast as a private one, while the underlying injury claim still needs all the usual proof.

The statewide framework, who counts as a public entity, what the notice must contain, how the deadlines interact, lives on our guide to injury claims against Arizona governments. Transit cases carry their own version of the trap, covered on our bus and light rail injury page, and the ordinary deadlines that govern everything else are laid out in Arizona's injury filing windows.

Dedicated Injury Lawyers Ready to Fight for You