Los Angeles County Property Tax Search: Look Up Bills, Records & Parcel Details
Los Angeles County property tax search usually starts with one number: the Assessor’s Identification Number, also called the AIN. Once you have the AIN, you can view a tax bill, check payment history, confirm a balance, review parcel details, update mailing-address issues, and choose the right official office for records, appeals or payments.
This image-free guide explains how to search LA County property tax bills, where to find parcel information, which office controls each record, what due dates matter, and how to avoid the most common mistakes that cause penalties, duplicate payments or wrong-record confusion.
Quick Answer: How to Search Los Angeles County Property Taxes
Start by finding the property’s AIN through the LA County Assessor Portal or property address search. Then use the LA County Treasurer and Tax Collector tools to view the secured property tax bill, confirm the balance due, pay online, or check payment history.
Use the Assessor for parcel details, assessed value, ownership-related assessment data and mailing-address changes. Use the Treasurer and Tax Collector for bills, balances, payments, receipts and payment history. Use the Registrar-Recorder/County Clerk for recorded real estate documents such as deeds.
Fast Route: Which LA County Property Tax Search Tool Should You Use?
Los Angeles County has several official property systems. Use the table below to avoid opening the wrong office page.
| User Need | Start Here | Why | Official Action |
|---|---|---|---|
| Find property by address | Assessor Portal | The Assessor search can help locate the AIN and parcel record. | Open Assessor Portal |
| View property tax bill | Treasurer and Tax Collector | The bill lookup page uses AIN to show the electronic property tax bill. | View Property Tax Bill |
| Check amount due or pay | Treasurer and Tax Collector | TTC handles balances, online payments and payment methods. | Pay Property Taxes |
| Check payment history | TTC Payment History | The free payment history tool shows secured real property payment history for the past three fiscal tax years. | Check Payment History |
| Search deeds or recorded documents | Registrar-Recorder/County Clerk | Recorded real estate documents are maintained by RR/CC, not the tax collector. | View Real Estate Records |
| Dispute assessed value | Assessment Appeals Board | Valuation disputes are handled through the Assessment Appeals Board process. | Open Assessment Appeals |
LA County Offices: Assessor vs Treasurer vs Recorder vs Appeals Board
Many search problems happen because users expect one office to control every property record. In Los Angeles County, different offices handle different parts of the property tax process.
Use for parcel lookup, AIN, assessed value, property characteristics, exemptions, ownership assessment data and mailing-address changes.
Use for tax bills, balance due, online payments, payment history, installment plans, penalties, receipts and duplicate bill requests.
Use for deeds and recorded real estate documents. These records are indexed by name and year, not by a simple public online deed search.
Use when you disagree with assessed value and need to file or check an assessment appeal.
What Is an AIN in Los Angeles County?
The Assessor’s Identification Number is a 10-digit parcel number used for Los Angeles County real property tax records. It is often shown in a format similar to map book, page and parcel.
You normally need the AIN to view the property tax bill, pay online, check a balance, or search secured payment history. If you do not know it, search by property address through the Assessor Portal first.
- Open the LA County Assessor Portal.
- Choose basic search or property address search.
- Enter the property address without extra punctuation if the first search fails.
- Confirm the property location and parcel before copying the AIN.
- Use the AIN on TTC bill, balance, payment or history tools.
AIN warning: Do not pay from a guessed AIN. Los Angeles County has many similar street names, units and parcels. Always confirm the address and parcel before making a payment.
How to Look Up a Los Angeles County Property Tax Bill
The official electronic bill lookup is handled by the Los Angeles County Treasurer and Tax Collector. You need the AIN to view the property tax bill.
The bill can help you confirm the tax year, installment amounts, mailing address, AIN, payment stubs, direct assessments, delinquency information and whether the bill is annual, supplemental, adjusted or prior-year related.
- Find the AIN using the Assessor Portal if you do not already have it.
- Open the TTC “View Property Tax Bill” page.
- Enter the AIN carefully.
- Review tax year, installment, delinquency date and bill type.
- Save or print a copy before paying, mailing, calling, or contacting escrow.
How to Check LA County Property Tax Payment History
Payment history is useful when you need to know whether a lender, escrow company, buyer, seller or prior owner paid the bill. LA County’s secured real property payment history tool is free and uses the AIN.
The official tool is intended as an aid and shows secured payment history for the past three fiscal tax years. For complex multi-parcel or escrow questions, the Treasurer and Tax Collector may require a separate information request process.
- Open the Secured Property Tax Payment History page.
- Enter the AIN.
- Review the fiscal tax year and last updated information.
- Print or save the payment history for your records.
- Compare it with bank, escrow or lender records before paying again.
Escrow tip: If a lender pays through an impound account, check payment history before making a duplicate owner payment. An “information only” statement can mean the lender normally receives the main bill.
Los Angeles County Property Records, Deeds and Parcel Details
Tax bills and recorded real estate documents are not the same thing. The Assessor and TTC can help with parcel and tax information, while the Registrar-Recorder/County Clerk maintains recorded real estate documents.
RR/CC states that Los Angeles County real estate records are maintained in alphabetical indexes by name and year recorded. The office does not provide online access to its real estate records or indexes through the internet and does not accept telephone requests for index searches.
| Record Type | Where to Start | What You Can Learn | Watch Out For |
|---|---|---|---|
| Parcel/AIN details | Assessor Portal | AIN, property address, assessed value and basic assessment-related parcel data. | Do not treat assessment data as a full title report. |
| Tax bill | TTC Bill Lookup | Annual secured, supplemental, adjusted or prior-year bill details. | Bill lookup is not a deed search. |
| Payment history | TTC Payment History | Secured real property payment history for the past three fiscal tax years. | Older or complex records may need direct official follow-up. |
| Deed or recorded document | Registrar-Recorder/County Clerk | Recorded real estate documents and indexes by name/year. | RR/CC does not provide online public internet access to real estate indexes. |
| Value dispute record | Assessment Appeals Board | Appeal filing, case status and hearing information. | Filing an appeal does not remove the need to pay taxes by delinquency dates. |
Los Angeles County Property Tax Due Dates
The Annual Secured Property Tax Bill is mailed each year in October and, by state law, no later than November 1. The bill has two installments.
The first installment is due November 1 and becomes delinquent after the close of business on December 10. The second installment is due February 1 and becomes delinquent after the close of business on April 10. Weekend rules can move delinquency to the next business day.
| Installment | Due Date | Delinquent Date | What to Do |
|---|---|---|---|
| 1st installment | November 1 | Close of business December 10 | Pay or ensure USPS postmark is on or before the delinquency date. |
| 2nd installment | February 1 | Close of business April 10 | Pay on time; second installment delinquency includes a 10% penalty plus $10 cost. |
| After June 30 | Current fiscal tax year ends | Unpaid current taxes default on July 1 | Defaulted taxes can add redemption fee and monthly penalties. |
Penalty warning: Failure to receive a bill does not cancel the duty to pay on time and does not automatically cancel late-payment penalties.
How to Pay LA County Property Taxes After Search
Payment should come after you confirm the correct AIN, tax year, installment and balance. The Treasurer and Tax Collector accepts online eCheck and card payments, telephone card payments, mail payments and certain in-person payments.
Online eCheck payments have no cost to the taxpayer. Card payments have a third-party service fee. Always review the official payment screen before submitting.
| Payment Method | Official Detail | Best For | Official Link |
|---|---|---|---|
| Online eCheck | No cost to taxpayer; uses checking account and AIN. | Most users who want to avoid card processing fees. | Payment Options |
| Online card | Credit/debit card payments have a 2.22% service fee with minimum fee. | Users who accept the processing fee and need card payment. | Pay by Card |
| Telephone card payment | Call 1.888.473.0835 and have AIN, year and sequence ready. | Users who cannot complete online card payment. | Telephone Payment Details |
| Use the correct payment stub and official mailing address. | Users who need to pay by check or money order. | Mail Payment Rules | |
| In person | Main office accepts several payment methods during business hours; Lancaster rules are more limited. | Users who need in-person help or receipt handling. | In-Person Payment Details |
Bank-account warning: If your account has a debit block, ask your bank about ACH authorization before paying by eCheck. Also double-check routing and account numbers before submitting.
LA County Property Tax Bill Types You May See
Not every bill is the same. Search results can show different bill types depending on ownership change, corrections, supplemental assessments, prior-year taxes or payment activity.
| Bill or Notice | Plain-English Meaning | What to Check |
|---|---|---|
| Annual Secured Property Tax Bill | Main yearly secured property bill, mailed in October and due in two installments. | AIN, installment amounts, due dates, direct assessments and payment stubs. |
| Information Only Statement | Often sent when a lender/impound account is expected to receive the main bill. | Confirm whether your lender will pay. |
| Supplemental Secured Bill | Often triggered by ownership change or new construction. | Escrow/lender may not pay it automatically. |
| Adjusted Secured Bill | A revised bill due to value correction, exemption change, direct assessment correction or certain Assessor-related penalties. | Compare with earlier bill before paying. |
| Statement of Prior Year Taxes | Shows older unpaid taxes or defaulted amounts. | Review penalties, redemption charges and payment plan options. |
| Notice of Delinquency | Indicates a missed installment or unpaid amount. | Act quickly to reduce additional penalties. |
New Homeowner Checklist for LA County Property Tax Search
New owners should not assume escrow or the prior owner handled every tax item. Secured property taxes are often prorated between buyer and seller, but the new owner remains responsible for taxes unpaid when escrow closes.
If the property changed hands between July 1 and October 1, the annual bill may not yet be available. Escrow may estimate amounts, but an estimate is not the same as a posted county tax payment.
- Find the AIN from the Assessor Portal or closing documents.
- View the current tax bill through TTC.
- Check payment history before paying personally.
- Review your closing statement for property tax debits, credits or actual payments.
- Ask your lender whether impound/escrow will pay the annual bill.
- Watch for supplemental bills after ownership change or new construction.
Supplemental Property Tax Bills After Purchase or New Construction
A supplemental secured bill can be issued after a change in ownership or new construction. It is separate from the annual secured property tax bill.
Do not ignore a supplemental bill. Lenders and impound accounts do not always pay supplemental bills automatically, so new owners should check directly with their lender and the official TTC record.
New construction can trigger reassessment and a supplemental bill for the affected period.
A purchase can trigger a supplemental assessment based on the new assessed value.
If the Assessor reassesses higher, a bill may follow. If lower, a refund may occur.
Contact your lender quickly if you use an impound or escrow account.
Mailing Address Problems and Missing Bills
The Treasurer and Tax Collector mails tax information to the mailing address on file. Address changes are handled by the Office of the Assessor, not by simply paying a bill.
If your mailing address is wrong, update it officially. Missing a bill does not remove payment responsibility or automatically cancel penalties.
- Search the Assessor record and confirm the current mailing address.
- Open the Assessor change-of-mailing-address route.
- Follow the form requirements carefully.
- Keep a copy of the submitted change.
- Continue checking TTC bill tools until the corrected address appears.
What If the Property Value Looks Wrong?
Searching a tax bill does not fix assessed value. If the assessed value looks wrong, start with the Assessor record and then review Assessment Appeals Board options.
The Assessment Appeals Board sits as the local board of equalization for valuation disputes. LA County’s appeals page also provides online filing, case status search, evidence submission, hybrid hearing information and language-accessibility information.
- Search the Assessor record and identify the value issue.
- Save the notice, tax bill and supporting evidence.
- Open the Assessment Appeals Board page.
- Review filing period and bill type before filing.
- Remember that filing an appeal does not suspend tax payment obligations.
Appeal fee note: LA County’s Assessment Appeals Board page states a non-refundable filing fee applies, with fee waiver options for undue financial hardship. Check the current fee and waiver instructions before filing.
Penalty, Postmark and Partial Payment Rules to Know
LA County penalty rules are strict. The payment must be received by the delinquency date or USPS-postmarked by the delinquency date to avoid penalties.
The first delinquent installment adds a 10% penalty. The second delinquent installment adds a 10% penalty plus a $10 cost. If current-year taxes remain unpaid after June 30, they become defaulted on July 1 and can add redemption charges and monthly penalties.
| Situation | Rule | User Tip |
|---|---|---|
| Mail payment | USPS postmark must be on or before delinquency date. | Use a mailing method with reliable proof; some postage types may not postmark the same way. |
| Late 1st installment | 10% penalty applies. | Pay as soon as possible to reduce further problems. |
| Late 2nd installment | 10% penalty plus $10 cost applies. | Do not wait until June 30 if you can avoid it. |
| Partial payment | Partial payments are allowed for annual secured taxes. | Partial payments can reduce delinquent/defaulted penalties on unpaid amounts. |
| Default after June 30 | Unpaid taxes default July 1 and can add redemption fee and monthly penalties. | Review payment plan or redemption options early. |
Multiple Parcels, Escrow, Lender and Professional Searches
Owners with several parcels, real estate professionals, title companies, escrow companies and lenders may need information for more than one property. Searching one AIN at a time may not be enough.
For questions such as who paid, whether a refund is pending, or why a refund is being issued, use the Treasurer and Tax Collector’s official multi-parcel or management tools when available.
- Gather all AINs before submitting a request.
- Separate current bill lookup from payment history lookup.
- Document the tax year and installment for each parcel.
- Compare county records with escrow, lender and title records.
- Keep county confirmation emails and printed histories.
Safety, Privacy and Scam Warnings
Property records and tax bills can contain sensitive account details. Use official county pages when entering AIN, payment or bank information.
For payments, use Los Angeles County Treasurer and Tax Collector pages. Do not trust ad-only payment pages.
Double-check routing and account numbers before submitting eCheck payment.
Not every postage type gives the same useful postmark proof.
A bill page does not prove ownership like a title report or recorded deed review.
Common LA County Property Tax Search Mistakes
Always confirm the property address and parcel before paying.
Supplemental bills may not be paid automatically by your lender.
Failure to receive a bill does not remove payment responsibility.
Appeals and tax payments are separate processes.
Check payment history and closing documents before relying on escrow.
Use RR/CC or a title professional for recorded document questions.
Los Angeles County Treasurer and Tax Collector Office Map
For in-person payment questions, payment proof, complex bill issues, or official help, check current hours and payment rules before visiting.
Los Angeles County Treasurer and Tax Collector
225 North Hill Street, First Floor Lobby
Los Angeles, CA 90012
Public counter hours are generally Monday–Friday, 8:00 AM–5:00 PM, excluding Los Angeles County holidays.
Related Property Tax Guides on This Site
These internal guides can help you understand property tax basics before using official Los Angeles County systems.
Official Los Angeles County Property Tax Search Links
Use these official links when you are ready to search, pay, check records, update information, or file an appeal.
Los Angeles County Property Tax Search FAQs
How do I search Los Angeles County property taxes?
Start with the AIN. If you do not know it, search by property address through the LA County Assessor Portal. Then use the Treasurer and Tax Collector bill, balance, payment or payment history tools.
What is an AIN?
AIN means Assessor’s Identification Number. It is a 10-digit parcel number used for Los Angeles County real property tax records.
Can I look up an LA County property tax bill by address?
You usually find the AIN by address through the Assessor Portal first. Then use the AIN on the Treasurer and Tax Collector bill lookup page.
Where do I view my Los Angeles County property tax bill?
Use the Treasurer and Tax Collector “View Property Tax Bill” page and enter the AIN.
How do I check property tax payment history?
Use the official Secured Property Tax Payment History tool. It is a free service for secured real property payment history for the past three fiscal tax years.
When are LA County secured property taxes due?
The first installment is due November 1 and delinquent after December 10. The second installment is due February 1 and delinquent after April 10, subject to weekend rules.
What happens if I do not receive a bill?
Failure to receive a bill does not remove your responsibility to pay on time and does not automatically cancel penalties.
Can I pay LA County property taxes online?
Yes. TTC accepts online eCheck and card payments. eCheck has no cost to the taxpayer, while card payments have a third-party service fee.
What is the card payment fee?
The official TTC payment page lists a 2.22% service fee with a minimum fee for credit/debit card payments. Review the payment screen before submitting.
Can I make partial payments?
Yes, partial payments are allowed for Annual Secured Property Taxes and can reduce delinquent/defaulted penalties on unpaid amounts.
Where do I find deeds or recorded property documents?
Use the Los Angeles County Registrar-Recorder/County Clerk. Its real estate records are maintained by name and year, and the office does not provide public online access to real estate indexes through the internet.
Is a property tax bill proof of ownership?
No. A tax bill is not the same as a deed or title report. Use recorded documents or a qualified title professional for ownership proof.
What if I just bought a property?
Find the AIN, check the tax bill, review payment history, compare with your closing statement, confirm lender impound rules, and watch for supplemental bills.
What is a supplemental tax bill?
A supplemental secured bill can be issued after ownership change or new construction. It is separate from the annual secured property tax bill.
Will my lender pay supplemental taxes?
Not always. Contact your lender or financial institution quickly if you receive a supplemental bill and have an impound account.
How do I change the mailing address?
Use the Office of the Assessor’s change-of-mailing-address process. The Treasurer and Tax Collector continues mailing to the address on file until it is updated.
Where do I dispute assessed value?
Review the LA County Assessment Appeals Board process. Appeals are separate from tax payment obligations.
Does filing an appeal stop payment deadlines?
No. Filing an appeal does not suspend the obligation to pay property taxes by the delinquency dates.
Where is the TTC office?
The main Treasurer and Tax Collector public counter is at 225 North Hill Street, First Floor Lobby, Los Angeles, CA 90012.
Is CountyPropertyTaxes.us an official government website?
No. This is an independent informational guide. Use official Los Angeles County pages for final account-specific search, payment, record, address-change and appeal actions.
Bottom Line
For Los Angeles County property tax search, find the AIN first, view the bill through the Treasurer and Tax Collector, check payment history before paying again, use RR/CC for recorded documents, and use the Assessment Appeals Board only for value disputes.
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