September Property Tax Deadlines by State: What's Due This Month

September Property Tax Deadlines by State: What's Due This Month

September Appeal Deadlines

State	Deadline	Where to File
California	September 15 (filing window opens)	County Assessment Appeals Board
Utah	September 15	County Board of Equalization
Louisiana	15 days after assessment rolls open	Parish Board of Review
Delaware	Varies by county	County Board of Assessment Review

Key September Deadlines Explained

California - September 15 (Window Opens)

California's Assessment Appeals Board filing window opens September 15 and closes November 30. This is a generous window compared to most states, giving you 2.5 months to file.

California's Proposition 13 limits annual assessment increases to 2% for properties that have not changed hands. If your assessment increased by more than 2% and you did not buy the property, add construction, or make major improvements, the assessor may have exceeded the legal limit.

California is also one of the few states where a declining market can push your assessment below the Prop 13 base value (a "Prop 8 reduction"). If your home's current market value is less than its Prop 13 factored base year value, you can request a temporary reduction.

To file in California:

1. Get the Assessment Appeal Application from your county clerk or assessor's website
2. Complete the application with your property details, current assessed value, and your opinion of value
3. File between September 15 and November 30
4. You will be scheduled for a hearing, typically 6-12 months later (California has significant backlogs in some counties)

Full California appeal guide

Utah - September 15

Utah homeowners must file with the county Board of Equalization by September 15. Assessment notices arrive in July-August. Utah assesses at 100% of fair market value for residential property.

If your assessed value is higher than what comparable homes are selling for, gather 3-5 recent sales and file your appeal.

Louisiana - 15 Days After Rolls Open

Louisiana assessment rolls open for inspection in August-September, depending on the parish. You have 15 days from the date the rolls open to file a protest. The window is tight and varies by parish, so check with your local assessor for exact dates.

September Payment Deadlines

State	What Is Due	Date	Notes
Maryland	First installment or full payment	September 30	Second installment due December 31
Delaware	Tax payment	September 30	Penalties apply after this date
West Virginia	First installment	September 1	Second installment due March 1
Iowa	First installment	September 30	Second installment due March 31
North Carolina	Tax payment	September 1 (varies)	Some counties have different deadlines

What to Do in September

If You Are in California

September 15 is your filing date. If you prepared during August, you are ready to go:

1. File on September 15. Early filers often get earlier hearing dates, which matters in counties with long backlogs.
2. Include strong comps. California hearings are heard by a three-person panel. They want to see comparable sales that demonstrate your value should be lower.
3. State your opinion of value clearly. Be specific. "I believe my property's market value is $X based on these comparable sales" is better than "my value is too high."

If You Are in Utah

September 15 is your deadline. If you have not filed yet:

1. Pull comparable sales today
2. Complete the appeal form
3. Submit before September 15

If You Are Paying This Month

Several states have September payment deadlines. Make sure to:

• Verify the amount on your bill matches your assessment notice
• Pay on time to avoid penalties (typically 1-2% per month)
• Keep your receipt or confirmation

Preparing for Fall Deadlines

The remaining fall deadlines include:

• New Jersey Tax Court: October 1
• Oregon: December 31 (Board of Property Tax Appeals)
• Alabama: 30 days after notice (notices arrive October-November)
• Philadelphia: October 7

If your deadline is coming in October or November, use September to prepare your evidence. Research comps, document condition issues, and have your appeal form ready to file.

The California Backlog

California is notorious for long wait times between filing and hearing. In large counties like Los Angeles, the wait can be 12-18 months. In smaller counties, it may be 3-6 months.

While you wait:

• Your current assessment remains in effect and you pay taxes based on it
• If you win, you receive a refund for the overpayment period
• Continue to track comparable sales in case you need updated evidence at the hearing

The long wait is frustrating, but the potential savings over multiple years make it worthwhile.

Frequently Asked Questions

What should I know about september property tax deadlines by state: what's due this month?

September marks the start of California's Assessment Appeals Board filing window (September 15 - November 30) and Utah's Board of Equalization deadline (September 15). Louisiana's protest period runs through September in many parishes. Payment deadlines hit in Alabama (October 1 coming up), Maryland (September 30), Delaware (September 30), and West Virginia (September 1).

What should I know about key september deadlines explained?

California's Assessment Appeals Board filing window opens September 15 and closes November 30. This is a generous window compared to most states, giving you 2.5 months to file.

What to Do in September?

September 15 is your filing date. If you prepared during August, you are ready to go:

What should I know about the california backlog?

California is notorious for long wait times between filing and hearing. In large counties like Los Angeles, the wait can be 12-18 months. In smaller counties, it may be 3-6 months.

What should I know about california and utah: your window is here?

September 15 is the date. PropertyTaxFight builds your evidence packet with comparable sales and assessment analysis. Ready to file the moment the window opens.