What Is a Notice of Claim and When Is It Required in Arizona?
This is one of the shortest, least forgiving deadlines in Arizona personal injury law, and missing it can end a claim before it ever really starts.
By Simon Touma · Updated August 14, 2026
When Do You Need to File a Notice of Claim?
Quick answer: A Notice of Claim is required under A.R.S. § 12-821.01 whenever a government entity, a city, county, state agency, public school, or public hospital, may be responsible for your injury. It must generally be filed within 180 days of the injury, far shorter than the standard two-year deadline for most personal injury claims.
On This Page
- When Do You Need to File a Notice of Claim?
- What a Notice of Claim Actually Is
- The Strict 180-Day Deadline
- What Situations Trigger This Requirement
- Specific Content Requirements
- Who Counts as a Government Entity for This Purpose
- What Happens After a Notice of Claim Is Filed
- Steps to Take Immediately if a Government Entity May Be Involved
- FAQs
What a Notice of Claim Actually Is
A Notice of Claim is a formal, specific written notice required before suing a government entity in Arizona, giving the entity a chance to investigate and potentially resolve the claim before litigation begins. It is not a lawsuit itself, it is a prerequisite that has to happen first.
This requirement exists because government entities are treated differently than private individuals and businesses under Arizona law, a legacy of sovereign immunity principles that give the government a structured opportunity to evaluate claims before facing formal litigation.
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The Strict 180-Day Deadline
Under A.R.S. § 12-821.01, this notice generally must be filed within 180 days of the injury, a fraction of the standard two-year statute of limitations for most personal injury claims. Arizona courts have historically enforced this deadline strictly, with little tolerance for late filings, even by a small margin.
This is what makes this deadline so dangerous: a claimant who assumes they have the standard two years, because that is what applies to most personal injury cases, can lose their entire claim without ever realizing the shorter deadline applied until it is already too late.
What Situations Trigger This Requirement
A government vehicle causing an accident, a hazard on public property (a pothole, a defect in a public building or sidewalk, a dangerous condition in a public park), an injury at a public school, or negligence by a public hospital or its employees can all trigger the Notice of Claim requirement.
It is not always obvious at first that a government entity is involved. A city bus, a county-owned vehicle, a state university employee, or a public utility crew can all fall under this requirement in ways that are not immediately apparent right after an accident.
Specific Content Requirements
Arizona’s Notice of Claim statute has specific requirements for what must be included: facts sufficient to identify the claim, the specific amount for which the claim can be settled (a “sum certain”), and the basis for that amount. This is not a general complaint letter, it is a formal legal document with real technical requirements.
Technical deficiencies in a notice, an unclear sum certain, missing required information, have historically been used by government entities to challenge and defeat claims on procedural grounds alone, without ever addressing the merits. This is exactly why careful, attorney-prepared notices matter so much here.
Who Counts as a Government Entity for This Purpose
- Cities and towns, including their vehicles, employees, and public property.
- Counties, including county roads, facilities, and vehicles.
- State agencies, including state universities and state-run facilities.
- Public school districts, including K-12 schools and their employees.
- Public hospitals and government-affiliated healthcare providers.
What Happens After a Notice of Claim Is Filed
Once filed, the government entity generally has a period of time to respond, accept, deny, or make a counteroffer. If the claim is not resolved through this process, and the deadline has been properly preserved, the claimant can then proceed to file a formal lawsuit.
This process is designed to allow for resolution without litigation in some cases, but it should never be treated as a guarantee of a fair outcome without legal representation, government entities generally have their own legal teams evaluating these notices carefully.
Steps to Take Immediately if a Government Entity May Be Involved
- Identify the specific entity involved as quickly as possible, the exact city, county, agency, or district.
- Document everything immediately, photos, witness information, and any official incident number.
- Contact an attorney within days, not weeks, given how short the 180-day window actually is.
- Do not assume the standard two-year deadline applies just because it usually does for other injury claims.
Injured by a government entity or on public property in Arizona? Talk to our litigation team before you respond.
Call 602-932-6010What Is a Notice of Claim and When Is It Required in Arizona? FAQs
How do I know if a government entity was involved in my accident?
This should be investigated immediately if there is any possibility, a government vehicle, public property, a public employee, given how short the deadline is. When in doubt, treat it as a government claim until you confirm otherwise.
What happens if I miss the 180-day deadline?
In most cases, this can permanently bar your claim against the government entity, which is why immediate action is so important. There are very limited exceptions, and you should not assume one applies to your situation.
Does this apply to federal government claims too?
Federal claims involve a separate process (the Federal Tort Claims Act) with its own specific deadlines and requirements, distinct from Arizona’s state Notice of Claim statute. Both can potentially apply if multiple entities are involved.
Is 180 days enough time to fully investigate my claim?
It requires prompt action, but a properly prepared notice can generally be filed within this window with immediate attorney involvement, even if the full investigation continues afterward.
Can I still sue a private party involved in the same accident on the standard two-year deadline?
Potentially yes, if a private party also contributed to your injury, that portion of your claim may follow the standard deadline, while the government-entity portion follows the shorter 180-day rule.
Do I need to hire an attorney to file a Notice of Claim?
It is not strictly required, but given the specific technical requirements and how strictly they have historically been enforced, self-preparing this document carries real risk.
What if the government entity denies my Notice of Claim?
A denial does not end your options, it generally allows you to proceed to file a lawsuit, assuming the notice itself was properly and timely filed.
Key Takeaways
- A Notice of Claim is required before suing any Arizona government entity.
- The deadline is just 180 days, far shorter than the standard two-year rule.
- This applies to government vehicles, public property hazards, and public hospitals, among others.
- Specific content requirements make careful, prompt preparation essential.
- It is not always obvious a government entity is involved, when in doubt, investigate immediately.
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