Pay, Ask or Route an LA County Tax Task
Use this guide to reach the correct Los Angeles County Treasurer and Tax Collector service, look up or pay property tax, submit an inquiry, find the right phone number and office, or understand auction and County business-license rules.
The key is routing the task correctly. Secured taxes, unsecured taxes, the Assessor, auctions and business licenses use different phone lines, rooms and online tools.
225 N. Hill St., First Floor Lobby.
Mon–Fri, 8:00 a.m.–5:00 p.m. PT.
ttc.lacounty.gov
Which Los Angeles County tax task do you have?
Use the secured-property-tax route and your 10-digit Assessor’s Identification Number (AIN).
Use Public Inquiries and select the exact topic before calling or visiting.
Use the dedicated phone number and service page; these are not normal secured-tax counter tasks.
How to recognize the real Los Angeles County TTC website
The official department website is ttc.lacounty.gov. Its property-tax payment tools connect to the County’s TTC systems and use familiar identifiers such as the AIN, Year and Sequence.
How to look up and pay a Los Angeles County property-tax bill
Use the right TTC inquiry instead of sending a generic question
The Public Inquiries page includes self-service tools and category-specific forms. Using the exact category can be faster than waiting on the main phone line during peak tax periods.
| You need | Best official route | Have ready | Do not do |
|---|---|---|---|
| Current balance / payment question | Secured Public Inquiry or balance-due tool | AIN, year, sequence and payment date | Do not send bank/card numbers in a general message |
| Payment history | Payment History self-service | Correct parcel and tax year | Do not treat history as a future payoff quote |
| Duplicate bill | Secured Property Tax Bill Request | AIN and situs address | Do not wait past a delinquency date for the paper copy |
| Refund status | Refund Status self-service | Account and payment information | Do not submit a duplicate refund request immediately |
| Penalty cancellation | Penalty Cancellation Request | Bill type, year and supporting facts | Do not assume every late payment qualifies |
| Unsecured tax question | Unsecured Public Inquiry | Roll Year, Bill Number and PIN if available | Do not use only the secured-tax inquiry |
eCheck, card, phone and in-person payment fees
| Method | Published cost / limit | Best use | Micro-help |
|---|---|---|---|
| Online eCheck | No County payment fee; current Payment Options page lists up to $2.5 million per transaction | Lowest-cost online route | Bank must allow ACH debit; save confirmation |
| Online credit/debit | 2.22%, minimum $1.49; $99,999.99 transaction limit | Card convenience | Calculate the percentage before using a large bill |
| Telephone card payment | 2.22%, minimum $1.49; same $99,999.99 transaction limit | You prefer the automated phone system | Call 888-473-0835 and have AIN, Year and Sequence |
| In-person card | 2.22%, minimum $1.49; $75,000 transaction limit | Counter help plus card payment | A physical visit does not remove the card fee |
| Check / money order / cashier’s check | No card service fee | Mail or in-person payment | Use the correct mailing route and payment stub |
Do not send a tax payment to the wrong Los Angeles address
The County publishes different destinations for ordinary U.S. mail and approved independent-delivery services. This distinction matters near a deadline.
P.O. Box 54018
Los Angeles, CA 90054-0018
- Make payment payable to Los Angeles County Tax Collector.
- Write the AIN on the check or money order.
- Include the payment stub(s).
- Use postage that receives a reliable USPS postmark.
Kenneth Hahn Hall of Administration
225 North Hill Street, Room 137
Los Angeles, CA 90012
- Use an IRS-designated or County-approved service.
- Meet the County’s send and delivery timing rules.
- Do not treat a private courier label like a USPS postmark.
Los Angeles County TTC phone numbers, counters and rooms
| Service | Phone | Public location | Hours / note |
|---|---|---|---|
| Secured property tax | 213-974-2111 888-807-2111 | 225 N. Hill St., First Floor Lobby | Mon–Fri 8:00 a.m.–5:00 p.m. PT, excluding County holidays |
| Unsecured property tax | 213-893-7935 | 225 N. Hill St., Room 109 | Separate unsecured inquiry path |
| Tax-defaulted auction | 213-974-2045 | 225 N. Hill St., Room 130 | Use auction schedule and auction email for sale-specific questions |
| Business License | 213-974-2011 | 225 N. Hill St.; official pages currently disagree on Room 109 vs 122 | Call before visiting for the current room |
| Department headquarters | Use service-specific numbers above | 500 W. Temple St., Los Angeles, CA 90012 | Do not assume this is the secured tax-payment counter |
Due dates, late penalties and default timeline
Missing bill, lost payment or payment not posted
Unsecured property tax uses different bill information
Unsecured personal property tax is not handled exactly like the annual secured real-property bill. The official unsecured payment route uses identifiers printed on the unsecured bill.
- Roll Year
- Bill Number
- Property Identification Number (PIN)
- Correct PIN for that Roll Year and Bill Number
Annual unsecured taxes are due upon receipt and become delinquent after 5:00 p.m. Pacific Time on August 31, subject to the County’s weekend/holiday extension rule.
How a penalty-cancellation request works
A late fee is not removed just because the taxpayer asks. TTC’s official process requires the requester to select the Revenue and Taxation Code section they believe authorizes cancellation and provide the bill information and facts.
Los Angeles County Treasurer and Tax Collector auction help
The TTC auction program is for tax-defaulted property and is separate from ordinary current-year tax payment. The County’s auction schedule, property list, bidder registration, deposit rules and sale terms are the controlling sources for each auction cycle.
The County describes a five-year waiting period for residential property and a three-year waiting period for non-residential commercial property before a tax-defaulted property can become eligible for sale, subject to the governing rules.
If you received an auction or sale notice and have a recorded interest, contact TTC immediately. The notice states property may be sold if taxes, penalties and costs are not paid by 5:00 p.m. PT on the last business day before the auction.
When the Los Angeles County TTC business-license section applies
The TTC’s Business License Program is regulatory. It applies to certain licensable activities in unincorporated Los Angeles County and the contract cities of Malibu, Santa Clarita and Westlake Village. It is not a general business tax based on gross receipts, and not every business activity requires a County license.
Published weekday hours: 8:00 a.m.–5:00 p.m. PT.
Unincorporated LA County, Malibu, Santa Clarita or Westlake Village + a licensable activity.
Treasurer and Tax Collector or Assessor: who fixes the problem?
| Your problem | Correct office | Why |
|---|---|---|
| How much do I owe? | TTC | Bills, balances and collection status |
| Did my payment post? | TTC | Payment history and research |
| I need a duplicate bill | TTC | Bill-request self-service |
| My assessed value looks wrong | Assessor / appeal process | TTC collects the tax but does not set assessed value |
| I need my AIN or property record | Assessor | Parcel identification and property search |
| Mailing address or ownership record is wrong | Assessor | Assessment-roll record maintenance |
| Homeowners’ exemption question | Assessor | Exemptions affect assessed taxation records |
| I filed an assessment appeal | Assessment Appeals Board + still pay TTC | Filing an appeal does not automatically stop the tax-payment deadline |
Final payment or inquiry checklist
Map to the secured property-tax counter
Use this location for secured-property-tax counter service: 225 North Hill Street, First Floor Lobby, Los Angeles, CA 90012. Before traveling, check County holidays and confirm whether your task can be completed online.
Use these Los Angeles County sources when you are ready to act
Los Angeles County Treasurer and Tax Collector FAQs
What is the Los Angeles County Treasurer and Tax Collector phone number?
For secured property-tax help, call 213-974-2111 or toll-free 888-807-2111. Unsecured property tax is 213-893-7935, auction information is 213-974-2045, and Business License is 213-974-2011.
What is the Los Angeles County Treasurer and Tax Collector address?
For secured property-tax payments and public counter help, use 225 North Hill Street, First Floor Lobby, Los Angeles, CA 90012. The department also lists its general Kenneth Hahn Hall of Administration address as 500 West Temple Street, Los Angeles, CA 90012.
What is the official Los Angeles County Treasurer and Tax Collector website?
The official department website is ttc.lacounty.gov. Start there for payment, inquiry, auction, business-license and contact tools.
How do I make a Los Angeles County property-tax inquiry?
Use the TTC Public Inquiries page. It includes self-service for payment history, duplicate bills, penalty cancellation, refund status, installment plans and other property-tax topics, plus secured and unsecured inquiry forms.
How do I pay Los Angeles County secured property taxes online?
Use the official TTC payment system and have the AIN ready. eCheck is listed as free, while credit/debit card payments carry a 2.22% service fee with a $1.49 minimum. Save the confirmation number.
When are Los Angeles County secured property taxes due?
The first installment is due November 1 and becomes delinquent after December 10. The second is due February 1 and becomes delinquent after April 10. A 10% penalty applies to a delinquent installment, and a $10 cost is added to the delinquent second installment.
How does the Los Angeles County TTC property auction work?
Tax-defaulted property may become eligible for sale after the applicable waiting period. TTC publishes the official auction schedule, property list, bidder registration, deposit deadlines and terms. Auction information is available at 213-974-2045. The April and June 2026 sale dates shown on the current schedule have already passed.
Does the Los Angeles County TTC issue business licenses?
Yes, for certain regulated activities in unincorporated Los Angeles County and the contract cities of Malibu, Santa Clarita and Westlake Village. Not every activity or incorporated city uses the County license. Call 213-974-2011 to confirm jurisdiction and license type.
What is the difference between secured and unsecured Los Angeles County taxes?
Secured taxes are generally tied to real property and use an AIN. Unsecured taxes use a separate bill path and identifiers such as Roll Year, Bill Number and PIN. The unsecured property-tax phone is 213-893-7935.
Should I contact the Treasurer and Tax Collector or the Assessor?
Use TTC for bills, balances, payments, penalties, duplicate bills, payment history, installment plans and tax-default issues. Use the Assessor for assessed value, AIN/property search, mailing-address or ownership corrections, exemptions and valuation questions.