LA County Assessor Property Search 2026: Address, AIN & Map

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Los Angeles County • free address, AIN, map and tax-record guide

Search LA County by Address or AIN

The official LA County Assessor Portal lets you search real-property assessment records by address or Assessor’s Identification Number (AIN), then review parcel, value, building, land and map information without paying a private lookup service.

Owner-name searching works differently: LA County does not publish an online Assessor owner-name database. This guide shows the legitimate free owner-information route, recorded-deed research, tax lookup, map search and 2026 assessment-appeal process.

Search by Address Search by Owner or Name Use Parcel Map
Official search key AIN or address The AIN is the county’s 10-digit real-property identifier.
Owner-name web search Not offered Official owner information is handled through privacy-compliant routes.
2026 regular appeal Through Nov. 30 The regular assessment filing window runs July 2–November 30.
Appeal filing fee $46 Non-refundable; financial-hardship waiver requests are available.

Fast Answer: Which LA County Tool Do You Need?

Address, AIN, assessed value or parcel details: use the Los Angeles County Assessor Portal. Property-tax bill or payment: use the Treasurer and Tax Collector. Owner/deed research: understand that owner names are not published through the public Assessor website; recorded real-estate documents are handled by the Registrar-Recorder/County Clerk. Formal value appeal: use the Assessment Appeals Board.

Important owner-search reality check: there is no official free LA County Assessor website where you can type a person’s name and receive that person’s property list. Private websites that imply otherwise are not the official Assessor database.
Independent-site disclosure: AssessorPropertySearch.org is an informational guide and is not the Los Angeles County Assessor, Treasurer and Tax Collector, Registrar-Recorder/County Clerk or Assessment Appeals Board. Sensitive information and payments should be submitted only through the responsible official county service.

LA County Assessor, Tax Collector or Recorder: Choose the Right Office

Los Angeles County property information is split across multiple departments. Opening the correct database first prevents most dead ends.

A

Assessor Portal

Use it for an address or AIN search, assessed values, parcel status, tax rate area, building and land characteristics, exemption display, base-value information and the responsible Assessor district office.

Official Los Angeles County Assessor Open Assessor Portal
$

Treasurer and Tax Collector

Use it for annual secured tax bills, amounts due, payment history, duplicate bills, payment methods, penalties, delinquency and tax-payment questions.

Official Los Angeles County Treasurer and Tax Collector Open Property Tax Portal
D

Registrar-Recorder/County Clerk

Use it for recorded deeds, grantor/grantee research, real-estate record copies and official recorded-document requests. The real-estate index itself is not provided online.

Official Los Angeles County Recorder Review Real Estate Records
!

Assessment Appeals Board

Use it for a formal appeal of an assessment after identifying the assessment type, filing deadline, roll value and your requested value.

Official LA County Board of Supervisors / AAB Open Assessment Appeals

What Is an LA County AIN / APN and How Do You Find It?

Los Angeles County calls its parcel identifier the Assessor’s Identification Number (AIN). The Treasurer and Tax Collector describes it as a 10-digit real-property number, commonly formatted like 1234-567-890.

Find it online

Search the street address in the Assessor Portal and copy the AIN displayed in the parcel summary.

Find it on documents

Check an annual or supplemental property-tax bill, deed, title report or other property document that carries the parcel number.

No exact address?

For vacant land or unusual parcels, use nearby cross streets and map search. The Assessor also recommends checking the deed or contacting its Help Desk when the AIN cannot be located.

Vacant-land clue: some parcels have no normal street address. The Assessor explains that addresses beginning with VAC/VIC may be proximity notations indicating a vacant parcel near an intersection or landmark.

What You Can Find in an LA County Assessor Property Record

Once the parcel opens, the Assessor Portal can provide much more than an address. Read each field according to its actual purpose.

Field
What it helps you understand
Important limitation
AIN
The parcel identifier used across assessment and tax workflows.
Do not confuse it with a tax bill sequence or document number.
Situs address
The property location carried by the Assessor.
Vacant parcels may not have a conventional street address.
Use type / use code
Assessor classification such as residential, multifamily or commercial.
It is not a zoning approval or land-use entitlement.
Parcel type / status
Shows whether the parcel is active, deleted or another county status.
A deleted parcel can reflect parcel changes rather than a missing property.
Tax Rate Area
Identifies the tax-rate area associated with the parcel.
It is not the final dollar amount due.
Land value
Assessor value allocated to land.
It is not an asking price or independent land appraisal.
Improvement value
Value allocated to buildings or taxable improvements.
It is not insurance replacement cost.
Total value
Assessment total for the displayed roll column.
Check whether the column says current roll, roll preparation or base value.
Exemption
Shows exemption information carried on the parcel when applicable.
A recently filed exemption may require separate confirmation.
Building square footage
Assessor building data used for assessment purposes.
It can differ from architectural, permit or appraisal measurements.
Year built / effective year
Assessor characteristics used in valuation.
An effective year does not necessarily mean original construction year.
Legal description
Description carried for assessment purposes.
Do not substitute it for a deed, title report, plat or survey when legal precision matters.
Responsible district office
The Assessor office assigned to the parcel.
Use this office for assessment questions, not deed or tax-payment issues.
2026 roll-reading tip: current parcel pages may show a 2026 Roll Preparation column beside a 2025 Current Roll and an earlier base-value column. Copy the heading together with the dollar amount so you do not accidentally compare different assessment stages.

LA County Property Tax Search, Payment History and Due Dates

The Assessor determines assessed property information; the Treasurer and Tax Collector handles the bill and payment. Do not expect the Assessor Portal to show whether your current installment was paid.

Use the tax portal for

  • Current secured property-tax information.
  • Paying property taxes.
  • Requesting a duplicate bill.
  • Reviewing payment options.
  • Penalty-cancellation resources.
  • Installment-plan information.

Free payment-history lookup

The Treasurer and Tax Collector provides a free secured real-property tax payment-history search covering the past three fiscal tax years.

Have the AIN ready before opening the history tool.

Official Treasurer and Tax Collector Check Payment History

Annual secured property-tax calendar

October — annual bills mailed

The Treasurer and Tax Collector prepares and mails Annual Secured Property Tax Bills each October.

November 1 — first installment due

The first installment is due November 1.

December 10 — first installment delinquency date

The first installment normally becomes delinquent after the applicable December 10 deadline.

February 1 — second installment due

The second installment is due February 1.

April 10 — second installment delinquency date

The second installment normally becomes delinquent after the applicable April 10 deadline.

July 1 — unpaid taxes can become tax-defaulted

Taxes remaining unpaid at the end of the fiscal tax year can become tax-defaulted and trigger additional charges.

Mailing warning: the county cautions that USPS does not postmark every type of postage and may not apply a postmark on the same day an envelope is deposited. Do not assume a last-minute mailbox drop automatically proves timely payment.

Current online card-payment fee

The county’s current secured-property FAQ lists a third-party credit/debit card service fee of 2.22% of the transaction amount, with a $1.49 minimum. Confirm the fee displayed at checkout before authorizing payment because payment-processor terms can change.

Official LA County tax information
Open Property Tax Portal Review Secured Tax Rules

LA County Property Assessment Appeal in 2026

As of August 12, 2026, the regular assessment appeal filing window is open. A formal appeal is different from merely correcting a factual property characteristic or asking why a tax bill increased.

2026 regular assessment

  • Filing period: July 2 through November 30, 2026.
  • Filing fee: $46, non-refundable.
  • Financial-hardship fee waiver is available.
  • Identify the assessment and parcel correctly.
  • State your opinion of value.
  • Keep proof that the application was filed.

Other assessment types

  • Supplemental assessments generally use a 60-day filing period tied to the applicable notice or tax bill.
  • Roll-change, adjusted and escape assessments can also use 60-day filing rules.
  • Misfortune and calamity matters can have a six-month period from the applicable proposed reassessment notice.
  • Read the notice type before calculating your deadline.
Do not wait for November 30 when your notice uses a different deadline. Supplemental, escape, adjusted and other assessment notices can have their own statutory filing windows.
Official LA County Assessment Appeals Board Check 2026 Appeal Information

AAB-100 Assessment Appeal Form: Micro-Level Filing Checks

The official AAB-100 form contains several instructions that are easy to miss. Completing the property identity and value fields correctly matters before you begin thinking about hearing evidence.

Prepare before filing

  • Assessor Parcel Number / AIN.
  • Property address or location.
  • Assessment, account or tax-bill number when applicable.
  • The roll value being challenged.
  • Your opinion of value.
  • Correct assessment type.
  • $46 filing fee or completed fee-waiver request.

Do not make these filing mistakes

  • Do not leave the applicant opinion-of-value field blank when the form requires it.
  • Do not assume filing the appeal suspends the tax-payment deadline.
  • Do not attach the full hearing evidence package to the initial AAB-100 when the form directs evidence to be presented for the hearing.
  • Do not submit the application without the filing fee or an accompanying fee-waiver request.
Taxes still must be paid: the AAB-100 instructions state that filing an assessment appeal does not relieve the taxpayer of the obligation to pay property taxes by the applicable due date. If the Board later reduces the assessment, the county can issue the corresponding refund or adjustment.
Evidence comes later: the application identifies the dispute; the hearing is where you prove it. Organize comparable sales, appraisals, condition evidence, measurements, photos or other relevant documents for the hearing process rather than turning the initial application into an unstructured evidence dump.

The official AAB Resource page provides the current AAB-100 form, fee-waiver form, user guide, evidence submission link and case-status search.

Official Assessment Appeals Board resources Open AAB Forms and Guides

New LA County Property Owner: What to Check After Closing

The deed, Assessor record, supplemental assessment and annual tax bill do not necessarily update on the same day. Check them as separate systems.

Ownership and parcel record

  • Confirm that the deed was recorded.
  • Save the recorded-document information.
  • Search the property address in the Assessor Portal.
  • Save the AIN.
  • Check the situs and mailing information.
  • Review building and land characteristics for obvious errors.

Assessment and tax follow-up

  • Watch for supplemental assessment or tax documents after a transfer.
  • Check eligibility for the Homeowners’ Exemption when the home is your principal residence.
  • Confirm whether the mortgage servicer will pay taxes through escrow.
  • Do not assume receiving an “information only” bill means escrow failed.
  • Verify actual payment history after the servicer’s expected payment date.
New subdivision or development: an annual tax bill can initially appear under a pre-subdivision or newly created parcel depending on the parcel’s legal status as of the January 1 assessment date. Match the AIN carefully instead of searching only the new street address.

Wrong Address, Value, Owner, Deed or Zoning? Contact the Right Office

Problem
Start with
What to prepare
Wrong building size, use data or assessment characteristic
Assessor
AIN, photos, measurements, permits or other supporting property information.
Disagree with assessed value
Assessor review / Assessment Appeals Board depending on issue and deadline
AIN, notice, roll value, opinion of value and valuation evidence.
Wrong deed or recorded ownership document
Registrar-Recorder/County Clerk
Party names, recording year and document information.
Tax payment missing
Treasurer and Tax Collector
AIN, fiscal year, amount, payment date and confirmation.
Mailing address needs change
Assessor
AIN and required identity/ownership information.
Property boundary dispute
Recorded records + survey professional
Deed, recorded plat, title material and current survey.
Zoning or permitted use question
Responsible city or county land-use agency
Property address, AIN and intended use.

LA County Assessor Property Search Not Working? Fix It This Way

Problem
Likely cause
Next step
Exact address gives no result
Address formatting is too specific.
Remove unit, direction, suffix, city and ZIP; try the street name.
Vacant parcel has no street address
Parcel uses a proximity notation.
Use Map Search, nearby cross streets, deed information or the Assessor Help Desk.
Cannot search by owner name
LA County does not publish owner-name information through the public Assessor website.
Use the official in-person Assessor route or Recorder process appropriate to your research.
Owner/deed index cannot be found online
Recorder real-estate records and indexes are not internet-accessible.
Use the appointment/viewing or official copy-request process.
Value looks different from last year
You may be comparing roll preparation, current roll and base value.
Read the column headings and tax year before comparing amounts.
Recent sale still looks outdated
Recording, assessment and tax systems update on different schedules.
Confirm the deed first, then contact the responsible Assessor district office for assessment-record questions.
Tax amount cannot be found in summer
The TTC current-year secured-tax lookup has seasonal availability while the annual roll is being prepared.
Check the current fiscal-year status and return when the official current-year amount is available.
Parcel map does not match a fence
Assessor GIS is not a boundary survey.
Check the recorded deed/plat and obtain a survey when legal location matters.
Property result says “deleted”
The Assessor parcel can have a historical/deleted parcel status after parcel changes.
Use parcel history/map context and identify the successor/current parcel rather than assuming the property disappeared.
Portal is temporarily slow or unavailable
Maintenance or heavy traffic.
Do not repeatedly submit sensitive or payment information; use the official county portal status and alternate official search options when posted.

LA County Property Search Help: Offices and Call Scripts

Have the AIN, address, tax year or recorded-document details ready before contacting an office.

Assessor help

Toll-free: 1-888-807-2111

Parcel pages identify the responsible district office and its current phone/address. District offices commonly list weekday service hours of 8:00 a.m.–5:00 p.m.; confirm the parcel’s office before visiting.

“I am researching AIN [number] at [address]. I need help with the [property characteristic / assessment / owner information / mailing address] record. Which district-office process should I use?”

Recorder real-estate records

Phone: 800-201-8999

Norwalk: 12400 Imperial Highway, Norwalk, CA 90650. Current real-estate-record viewing instructions use an appointment process.

“I need to locate or order a real-estate record. I have the party name, approximate recording year and property information. Which viewing or copy-request option fits this request?”

Assessment Appeals Board

AAB: 213-974-1471

Address: Kenneth Hahn Hall of Administration, 500 West Temple Street, Room 383, Los Angeles, CA 90012.

“I am calling about a 2026 assessment for AIN [number]. The notice type is [type], the notice date is [date], and I need to confirm the filing deadline or application requirement.”
Owner-name request tip: do not call the Recorder expecting staff to conduct an index search over the phone. The Recorder specifically says telephone index searches are not accepted.

Before You Rely on an LA County Property Record

  • Confirm that the situs address matches the property you intended to research.
  • Save and verify the 10-digit AIN.
  • Read the parcel status.
  • Check whether the value column is current roll, roll preparation or base value.
  • Do not treat Assessor data as an online owner-name database.
  • Use recorded documents for deed/title research.
  • Use the Treasurer and Tax Collector for the actual bill and payment status.
  • Do not treat an Assessor map as a legal survey.
  • Use the responsible land-use agency for zoning and permit decisions.
  • Check the correct appeal deadline before filing a value challenge.

Official LA County Property Links by Final Task

Use these only after identifying the record or action you actually need.

Address / AIN search

Find the Assessor parcel, assessed values and property characteristics.

Assessor Portal

Property-tax portal

Move from the parcel to tax bills, payment resources and county self-service options.

Property Tax Portal

Tax payment history

Check free secured real-property payment history for the past three fiscal tax years.

Payment History

Recorded deeds

Review the official rules for viewing real-estate records by name and recording year.

Recorder Records

2026 assessment appeal

Confirm the filing window, $46 fee, waiver rules and appeal type.

Assessment Appeals

LA County Assessor Property Search FAQs

Can I search LA County Assessor property records by address for free?

Yes. The official Los Angeles County Assessor Portal provides a free address search. Start with the street number and street name, open the matching parcel and save the AIN for later tax, map and assessment tasks.

Can I search LA County property records by owner name online?

No official public Assessor owner-name search is provided online. LA County says owner information is available free in person at Assessor district offices, while deed-party research is handled through the Registrar-Recorder/County Clerk’s privacy-compliant record process.

Is there a free LA County property owner search?

Owner information can be obtained through official county procedures, but there is no free public Assessor website where you enter a person’s name and receive that person’s property list. If you know the property address, use the free Assessor address search first.

What is an LA County AIN or APN?

The Assessor’s Identification Number is the county’s 10-digit real-property identifier, commonly formatted like 1234-567-890. You can find it through an address search, on a property-tax bill, deed or title-related document.

How do I use the LA County Assessor property map?

Open the official Assessor Portal and choose Map Search. Use it for parcel location and assessment-map context, especially when an address is incomplete or the parcel is vacant. Do not treat map boundaries as a legal survey.

Why does an LA County property address begin with VAC/VIC?

Some vacant parcels do not have an exact street address. The Assessor explains that VAC/VIC can be a proximity notation indicating vacant property located near a street, intersection or landmark.

Where can I search an LA County deed by name?

Los Angeles County real-estate records are indexed by name and year through the Registrar-Recorder/County Clerk. The real-estate records and indexes are not available online, so use the official viewing or record-copy process.

What is the 2026 LA County regular assessment appeal deadline?

The 2026 regular assessment filing period runs from July 2 through November 30. Supplemental, escape, adjusted and other assessment types can use different deadlines, so read the specific notice before filing.

How much does an LA County assessment appeal cost?

The current LA County Assessment Appeals Board filing fee is $46 and is non-refundable. A fee-waiver request is available when paying the fee would create undue financial hardship and must accompany the application as required.

When are LA County secured property taxes due?

The first annual secured property-tax installment is due November 1 and normally becomes delinquent after December 10. The second is due February 1 and normally becomes delinquent after April 10. Check the actual bill and current county instructions for weekend, holiday or other special timing rules.

Best Search Order

Start with the free Assessor address search, confirm the parcel and save the AIN. Use that AIN for tax and map research. Move to the Recorder only when you need the recorded deed or name-based document index, and move to the Assessment Appeals Board only when you are formally challenging an assessment.

Most importantly, do not waste time searching for an official online owner-name database that LA County does not publish. Use the correct privacy-compliant county route for the information you actually need.

Property Search Smart Helper

Find the Right Property Record, Tax Bill, Deed or Assessor Search Route

Use this helper before searching county property records. It helps you choose the right office, prepare the right details, avoid wrong-office mistakes, and review property records safely.

Official-source focused Use county assessor, appraiser, auditor, tax collector, treasurer, recorder, clerk, GIS and appeal resources where available.
Not legal or tax advice Always confirm values, taxes, deeds, exemptions, appeals and deadlines with the official county office.
Works across states Designed for APN, PIN, parcel number, STRAP, folio, account number, GIS map and deed-record searches.

Property Search Route Finder

Choose what you have and what you want to find. The tool will suggest the best search route and common mistake to avoid.

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Parcel / APN / PIN Format Helper

Parcel numbers are formatted differently by county. Try these variations if your official search does not return results.

This tool does not send or store your entry. It only creates search-format ideas on this page.
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Assessor, Tax Collector, Recorder or GIS?

Select your issue and this tool will show the office that usually handles it.

Choose an option above
This finder helps prevent wrong-office mistakes. Exact office names vary by state and county.

Simple Property Tax Estimate Helper

This is a general estimate only. State and county tax rules differ, so always verify final bills with the official tax collector, treasurer or county tax office.

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Exemption / Appeal Readiness Checklist

Use this before applying for an exemption or challenging a value. Missing proof is one of the biggest reasons users waste time or miss deadlines.

Property Record Review Checklist

Review these fields before relying on any assessor, appraiser, auditor, property appraiser, tax or deed record.

Official-source and accuracy note: This helper is for educational use only. Property values, tax bills, deeds, exemptions, GIS boundaries and appeal deadlines can change. Always confirm final information with the official county assessor/appraiser/auditor, tax collector/treasurer, recorder/clerk, GIS office or appeal board.