Los Angeles County Treasurer and Tax Collector: Services, Notices and Contacts

The Los Angeles County Treasurer and Tax Collector (TTC) handles property tax collection, certain County business licenses, delinquent County accounts, qualifying decedent estates, and County treasury and financing activities. Use this guide to identify the unit responsible for your request, choose the appropriate official service, and prepare information before contacting an office.

Independent information guide: This website is not affiliated with Los Angeles County or TTC. Official agencies handle payments, account records, applications, estate referrals, and decisions. Do not send payment details or confidential documents to this website.

Choose the Correct Service

Start with the title and issuing unit printed on your bill, letter, or notice. A property tax bill, business license application, and Collection Services notice use different account identifiers and procedures.

Which office handles your request?

Your request	Responsible service	Where to start
A secured property tax bill, balance, or payment record	TTC Secured Property Tax	Property tax service selection.
An unsecured tax bill for personal property or another assessment on the unsecured roll	TTC Unsecured Property Tax	Check the bill type, year, and bill number, then use the official unsecured tax information.
A question about assessed property value or an assessment exemption	Los Angeles County Assessor	See our Assessor guide. TTC payment inquiries do not change an assessment.
A County business license application or renewal	TTC Business License Section	Check the business location and activity.
A delinquent account referred by another County department	TTC Collection Services, with separate routing for some balance questions	Identify the originating department and collection account.
A decedent estate that may need public administration	Public Administrator	Review referral circumstances and contact the Investigations Unit.
An impending tax sale, auction, Chapter 8 matter, or excess proceeds notice	TTC Tax-Defaulted Property	Match the notice to the appropriate contact.
County financing, treasury, or investor information	Office of Public Finance	Use the official financial information resources.

Property Tax Services

TTC distributes property tax bills, receives payments, maintains collection records, and handles delinquent tax matters. The Assessor determines assessed values, while other property tax questions may involve the Auditor-Controller or Assessment Appeals Board.

For detailed instructions on bill searches, payment methods, payment history, deadlines, and related programs, see our Los Angeles County Property Tax guide. The table below helps you choose the appropriate TTC entry point.

Selecting a property tax service

Task	Official starting point	Information to have available
View a secured property tax bill	View Property Tax Bill.	Assessor's Identification Number (AIN). The page includes an AIN lookup option.
Choose a payment method	Property tax payment options.	The current bill, tax type, year, and identifiers requested by the selected payment service.
Make an unsecured tax inquiry or payment	Unsecured property tax services.	The bill year, bill number, and notice details. Follow the fields requested by the unsecured service.
Manage repeated payments for multiple properties	Property Tax Management System.	Property identifiers and account details. The system supports up to 100 properties per list and additional lists.
Ask about a secured bill or payment record	Secured Property Tax public inquiries.	AIN, tax year, installment, notice details, and payment confirmation when relevant.

Secured and Unsecured Bills Are Different

Secured taxes are generally associated with real property. Unsecured taxes commonly involve boats, aircraft, business furniture, fixtures, and machinery. The unsecured roll can also include certain escape, supplemental, and other assessments.

Use the bill title and requested account fields to choose the service. An AIN is not interchangeable with an unsecured bill number, Property Identification Number (PIN), collection account number, or payment confirmation number.

Missing Bills and Unresolved Payments

If a bill has not arrived, use the appropriate official bill service or contact the responsible tax office. Do not assume that non-receipt changes a payment obligation.

If an online transaction stops without a clear result, check for a confirmation and review the official payment record before submitting another payment. Keep the transaction date, amount, and confirmation details for any inquiry.

For deadline questions, distinguish annual bills from supplemental, escape, and other notices. Follow the applicable official instructions and the dates on your specific bill. Disaster-related relief notices may have separate eligibility rules and deadlines.

County Business Licenses

TTC administers a regulatory County Business License Program for specified activities in unincorporated Los Angeles County and the cities of Malibu, Santa Clarita, and Westlake Village. Location alone does not determine whether a license is required; the business activity must also fall within the program.

Check Whether the Program Applies

1. Identify the physical location where the activity will operate.
2. Describe the activity accurately, including any separate services offered at the same location.
3. Open the official business license information page and use its license-requirement resources.
4. Check whether one or more County licenses apply before submitting an application.
5. Review the application requirements, fees, and required agency approvals.

The program is regulatory rather than a tax calculated on gross receipts. All applications require a nonrefundable application fee. Some licenses require review by other County agencies or final approval from the Business License Commission.

A County business license does not establish that every other permit or authorization has been obtained. Ask the relevant agencies about requirements for the activity and premises.

Before Visiting a Business License Office

Have the business address, activity description, and any existing application or license number available. Valencia and Lancaster operate on specific weekdays, so check the office schedule below before traveling.

Delinquent County Accounts

Collection Services handles certain unpaid accounts referred by other County departments, including accounts involving returned checks. A collection notice is separate from a property tax bill and should be handled using its collection account details.

Identify the Origin of the Account

Check the notice for the originating department, account number, balance, and stated reason for the charge. TTC maintains general information about the source and nature of referred accounts, but detailed questions may need to be answered by the originating department.

For detailed balance questions involving public assistance benefits such as CalWORKs, CalFresh, or General Relief, TTC's instructions direct users to the Department of Public Social Services. Use the contact provided on the notice or the current Collection Services information page.

For other referred accounts or questions about applying for a payment plan, contact TTC Collection Services at 888-474-0244 or 213-974-0160. Payment-plan availability must be confirmed for the account.

Use the Collection Payment Service

Follow the notice and the official collection bill payment instructions. Do not use a property tax payment option for an unrelated collection account.

Before paying, match the displayed account to your notice and retain the confirmation. If you do not recognize the account, contact the official office to clarify its source.

Public Administrator Services

The Public Administrator, part of TTC, administers qualifying decedent estates under California law. A referral asks the office to evaluate whether its involvement is appropriate; it does not automatically establish that the office will administer the estate.

When a Referral May Be Appropriate

• A decedent's property is uncared for or at risk of being wasted.
• No known heirs, executor, or appointed administrator can be identified.
• An executor named in a will fails to act.
• A will names the Public Administrator as executor.
• Heirs want the Public Administrator to administer the estate.

Review the official Public Administrator instructions for the Decedent Referral form and submission methods. The Investigations Unit can be reached at 213-974-0460 to discuss whether a referral is appropriate.

Prepare the information requested by the official form and explain your relationship to the decedent and the circumstances of the estate. An estate referral is different from a probate court filing or a request to resolve a property tax balance.

The official contact directory lists the office on the ninth floor of the County Hall of Records and the eighth floor for mail. Follow the current referral instructions when sending documents.

Tax-Defaulted Property and Sale Notices

Unpaid real property taxes can lead to tax default and, after the applicable statutory period and required procedures, the County's power to sell the property. The beginning of default and a scheduled auction are different stages.

TTC's general auction information describes a five-year period for residential property and a three-year period for nonresidential commercial property before the power to sell may arise. These periods do not establish an automatic auction date or replace the deadlines in an individual notice.

Match the Notice to the Correct Contact

• Auction information: Questions about tax-defaulted property auctions and related sale information.
• Chapter 8: Questions about the separate Chapter 8 agreement-sale process.
• Excess proceeds: Questions about proceeds remaining after a tax sale and the applicable claim process.

If you receive an impending-sale or auction notice for your property, contact the identified unit promptly. Ask about the current redemption amount, applicable deadlines, and any available arrangements for your account. Do not assume that paying only the current annual bill resolves prior-year default.

Use the official auction information and your notice for instructions. A tax sale should not be treated as a conventional property purchase; prospective bidders should review the County's terms and property information before participating.

Public Finance and Investor Information

The Office of Public Finance provides access to County financing and investment resources, including official statements, financial reports, investment policies, and treasury information. Start with TTC's official investor information page and follow its current resource links.

Check each document's date and whether it is identified as audited. Historical reports may not reflect current conditions. These materials are provided for information and do not constitute an offer to buy or sell securities.

Prepare Your Inquiry

Before contacting an office, prepare the information relevant to your request. Use the identifier requested for your specific bill, notice, application, or estate referral; not every item below applies to every service.

• Service type: Secured tax, unsecured tax, business license, collection account, estate referral, auction matter, or public finance.
• Identifier: The AIN, bill number, license number, collection account number, or reference requested for that service.
• Period: Tax year, installment, application date, or notice date when applicable.
• Issue: A brief description of what needs to be located, explained, or corrected.
• Payment details: Date, amount, and confirmation number if the request concerns a transaction.

Send sensitive documents only through the official method requested by the responsible office. For a mailed payment or application, use the destination specified on the current bill or form; an office's visit address may not be its processing address.

Office Contacts and Locations

The directory below separates contacts by purpose. Check the official TTC contact directory before traveling, especially around County holidays.

TTC offices, telephone contacts, and public schedules

Office or service	Location	Contact	Published schedule or visit note
Secured Property Tax	225 North Hill Street, First Floor Lobby, Los Angeles, CA 90012	213-974-2111 Toll-free: 888-807-2111 TTY: 213-974-2196	Monday–Friday, 8:00 a.m.–5:00 p.m. Pacific Time, excluding County holidays.
Unsecured Property Tax	225 North Hill Street, Room 109, Los Angeles, CA 90012	213-893-7935	Monday–Friday, 8:00 a.m.–5:00 p.m. Pacific Time, excluding County holidays.
Business License Main Office	225 North Hill Street, Room 122, Los Angeles, CA 90012	213-974-2011	Monday–Friday, 8:00 a.m.–5:00 p.m. Pacific Time. Check holiday arrangements.
Business License Valencia Office	23757 Valencia Boulevard, Valencia, CA 91355	661-253-7342	Monday and Wednesday, 8:00 a.m.–5:00 p.m. Pacific Time. Check holiday arrangements.
Business License Lancaster Office	335A East Avenue K-6, Lancaster, CA 93535	661-723-4492	Tuesday, Thursday, and Friday, 8:00 a.m.–5:00 p.m. Pacific Time. Check holiday arrangements.
Collection Services	Contact the office for instructions relevant to your account.	888-474-0244 213-974-0160	Use the collection notice and official contact instructions for payment or visit arrangements.
Public Administrator	County Hall of Records, 320 West Temple Street, Ninth Floor, Los Angeles, CA 90012	General: 213-974-0404 Referrals: 213-974-0460	Monday–Friday, 8:00 a.m.–5:00 p.m. Pacific Time, excluding County holidays. The directory specifies the eighth floor for mail.
Tax-Defaulted Property	225 North Hill Street, First Floor Lobby, Los Angeles, CA 90012	Auction: 213-974-2045 Chapter 8: 213-974-0871 Excess proceeds: 213-974-7245	Contact the unit matching your notice before visiting or sending documents.
Office of Public Finance	500 West Temple Street, Fourth Floor, Room 432, Los Angeles, CA 90012	213-974-7175	Monday–Friday, 8:00 a.m.–5:00 p.m. Pacific Time, excluding County holidays.
Public Records Requests	500 West Temple Street, Room 462, Los Angeles, CA 90012	213-584-1571	Use the official public records contact for request instructions.

Department address: Kenneth Hahn Hall of Administration, 500 West Temple Street, Los Angeles, CA 90012. Use the service-specific locations above for your request.

Accessibility: The official directory lists 711 for Telecommunications Relay Service. It is a relay access number, not TTC's general customer service telephone number.

If you find an outdated office detail or broken link in this guide, please report it to our website editor. Questions about a bill, payment, application, or estate should go to the responsible office listed above.