Los Angeles County Office of the Assessor Forms and Documents
The Los Angeles County Office of the Assessor is a county assessor’s office, a local government office focused broadly on property assessment.
Forms listed here cover property-tax exemptions, ownership changes and transfers of assessed value, along with assessment requests and business property statements. The collection also includes specialized reports and schedules for property such as aircraft, vessels, and oil and gas.
Los Angeles County Office of the Assessor forms
- BOE-263-C · CA-LACOOA · Los Angeles CountyBOE 263-C Church-Lessors-Exemption Claim Property Leased by a Church to a Public School College etc used Jointly with a Church – Los Angeles County, CA
BOE-263-C is the Los Angeles County Office of the Assessor's claim form for the welfare exemption on church property leased to a public school or college and used jointly with the church. Fill it out online on FillingPDF and download or print the completed PDF.
3 pages - ADS-820.3 · CA-LACOOA · Los Angeles CountyForm ADS-820.3, Property Tax Installment Deferral Application – Los Angeles County, CA
Form ADS-820.3, the Property Tax Installment Deferral Application, is issued by the Los Angeles County Office of the Assessor for owners whose property was damaged by a calamity. Fill it out online on FillingPDF and download or print the completed PDF.
1 page - ASSR-129 · CA-LACOOA · Los Angeles CountyForm ASSR-129, Property Data Change Request – Los Angeles County, CA
Property Data Change Request (ASSR-129) is the Los Angeles County Office of the Assessor form for reporting differences between the property data on the website and the actual property. Fill it out online on FillingPDF and download or print the PDF.
1 page - ASSR-451 · CA-LACOOA · Los Angeles CountyForm ASSR-451, Change of Mailing Address – Los Angeles County, CA
Form ASSR-451, Change of Mailing Address, is the Los Angeles County Office of the Assessor form for correcting or updating the mailing address on a property record. Fill it out online on FillingPDF and download or print the completed PDF.
1 page - ASSR-9 · CA-LACOOA · Los Angeles CountyForm ASSR-9, New Construction Exclusion Form – Los Angeles County, CA
Form ASSR-9, the New Construction Exclusion Claim (CONEX), is issued by the Los Angeles County Office of the Assessor for new construction intended for sale. Fill out the form online on FillingPDF and download or print the completed PDF.
2 pages - B-113A · CA-LACOOA · Los Angeles CountyForm B-113A, Supplemental Schedule to Form 571-L for Bowling Centers – Los Angeles County, CA
Form B-113A is the Los Angeles County Office of the Assessor's supplemental schedule for bowling centers. It replaces Schedule A of Form 571-L. Fill out the PDF online on FillingPDF and download or print it.
2 pages - B-116A · CA-LACOOA · Los Angeles CountyForm B-116A, Supplemental Schedule to Form 571-L for Service Station and or Car Wash – Los Angeles County, CA
Form B-116A is the Los Angeles County Office of the Assessor schedule for reporting service station and car wash equipment costs, attached to Form 571-L. Fill out the fillable PDF online on FillingPDF and download or print it.
2 pages - B-158A · CA-LACOOA · Los Angeles CountyForm B-158A, Supplemental Schedule to Form 571-L for Theaters – Los Angeles County, CA
Form B-158A is the Los Angeles County Office of the Assessor's Supplemental Schedule to Form 571-L for Theaters. Fill out the fillable PDF online on FillingPDF and download or print the completed schedule.
2 pages - B-17 · CA-LACOOA · Los Angeles CountyForm B-17, Supplemental Schedule to Form 571-L for Hotels and Motels – Los Angeles County, CA
Form B-17 is the Los Angeles County Office of the Assessor's supplemental schedule to Form 571-L, used by hotels and motels to report equipment cost by year of acquisition. Fill it out online on FillingPDF and download or print the completed PDF.
2 pages - B-36 · CA-LACOOA · Los Angeles CountyForm B-36, Coin Operated and Amusement Machines Report – Los Angeles County, CA
Form B-36 is the Los Angeles County Office of the Assessor's annual report of coin operated vending and amusement machines located in the county on January 1. Fill it out online on FillingPDF and download or print the completed PDF.
3 pages - B-43 · CA-LACOOA · Los Angeles CountyForm B-43, Supplemental Schedule to Form 571-L Water Softener Service Industry Report – Los Angeles County, CA
Form B-43 is the Los Angeles County Office of the Assessor's 2026 supplemental schedule to Form 571-L for reporting water softener rental units in service on January 1. Fill out the PDF online on FillingPDF and download or print it.
2 pages - BOE-19-B · CA-LACOOA · Los Angeles CountyForm BOE-19-B, Claim for Transfer of Base Year Value to Replacement Primary Residence for Persons At Least Age 55 Years – Los Angeles County, CA
Form BOE-19-B is the claim that people at least age 55 file with a California county Assessor to transfer their base year value to a replacement primary residence. Fill out the PDF online and download it.
2 pages - BOE-19-C · CA-LACOOA · Los Angeles CountyForm BOE-19-C, Certification of Value by Assessor for Base Year Value Transfer
BOE-19-C, Certification of Value by Assessor for Base Year Value Transfer, is listed by the Los Angeles County Office of the Assessor. Assessors use it to certify sale and base year values. Fill out the PDF online on FillingPDF and download or print it.
1 page - BOE-19-D · CA-LACOOA · Los Angeles CountyForm BOE-19-D, Claim for Transfer of Base Year Value to Replacement Primary Residence for Severely Disabled Persons – Los Angeles County, CA
Form BOE-19-D is the claim a severely and permanently disabled California homeowner files with the county Assessor to transfer a base year value to a replacement primary residence. Fill out the PDF online and download it.
3 pages - BOE-19-DC · CA-LACOOA · Los Angeles CountyForm BOE-19-DC, Certificate of Disability Proposition 19 – Los Angeles County, CA
Form BOE-19-DC, Certificate of Disability Proposition 19, is a Los Angeles County Office of the Assessor form on which a physician certifies a severe, permanent disability. Fill it out online on FillingPDF and download or print the completed PDF.
1 page - BOE-19-G · CA-LACOOA · Los Angeles CountyForm BOE-19-G, Claim for Reassessment Exclusion for Transfer Between Grandparent and Grandchild Occurring on or After February 16, 2021 – Los Angeles County, CA
Form BOE-19-G is the claim filed with the Los Angeles County Office of the Assessor to exclude a grandparent-grandchild transfer made on or after February 16, 2021 from reassessment. Fill out the PDF online and download it.
4 pages - BOE-19-P · CA-LACOOA · Los Angeles CountyForm BOE-19-P, Claim for Reassessment Exclusion for Transfer Between Parent and Child Occurring on or After February 16, 2021 – Los Angeles County, CA
Form BOE-19-P is the claim used with the Los Angeles County Office of the Assessor to exclude a parent-child transfer of a family home or family farm from reassessment. Fill it out online and download or print the PDF.
4 pages - BOE-19-V · CA-LACOOA · Los Angeles CountyForm BOE-19-V, Claim for Transfer of Base Year Value to Replacement Primary Residence for Victims of Wildfire or Other Natural Disaster
Form BOE-19-V is the claim a California owner files with the county Assessor to transfer the factored base year value of a disaster-damaged primary residence to a replacement home. Fill it out online and download or print the PDF.
2 pages - BOE-236-A · CA-LACOOA · Los Angeles CountyForm BOE-236-A, Supplementary Affidavit for BOE-236 Housing - Lower-Income Households Eligibility Based on Family Household Income – Los Angeles County, CA
Form BOE-236-A is the supplemental affidavit filed with the Los Angeles County Office of the Assessor to support a BOE-236 low-income housing exemption claim. Fill out the fillable PDF online and download or print it.
5 pages - BOE-236 · CA-LACOOA · Los Angeles CountyForm BOE-236, Exemption of Leased Property Used Exclusively For Low-Income Housing – Los Angeles County, CA
Form BOE-236 is the claim for exemption of leased property used exclusively and solely for low-income housing, from the Los Angeles County Office of the Assessor. Fill it out online on FillingPDF and download or print the completed PDF.
1 page - BOE-260-A · CA-LACOOA · Los Angeles CountyForm BOE-260-A, Certificate and Affidavit for Exemption of Certain Aircraft – Los Angeles County, CA
BOE-260-A is the Certificate and Affidavit for Exemption of Certain Aircraft, filed with the Los Angeles County Office of the Assessor for aircraft displayed in an aerospace museum. Fill it out online on FillingPDF and download or print the completed PDF.
2 pages - BOE-260-B / EXM-238 · CA-LACOOA · Los Angeles CountyForm BOE-260-B, Claim for Exemption from Property Taxes of Aircraft of Historical Significance – Los Angeles County, CA
Form BOE-260-B / EXM-238 is the Los Angeles County Office of the Assessor claim for property tax exemption of aircraft of historical significance. Fill it out online on FillingPDF and download or print the completed PDF.
2 pages - BOE-260 · CA-LACOOA · Los Angeles CountyForm BOE-260, Certificate and Affidavit for Exemption of Work of Art – Los Angeles County, CA
Form BOE-260 is the claim for exemption of works of art on public display, published by the Los Angeles County Office of the Assessor. Fill out the form online on FillingPDF and download or print the completed PDF.
2 pages - BOE-261 · CA-LACOOA · Los Angeles CountyForm BOE-261, Claim for Veterans' Exemption – Los Angeles County, CA
Form BOE-261, Claim for Veterans' Exemption, is the claim filed with the Los Angeles County Office of the Assessor to request the California veterans' exemption on property. Fill out the form online on FillingPDF and download or print the completed PDF.
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About the Los Angeles County Office of the Assessor
The collection reflects several distinct property-tax topics. Exemption claims include forms for homeowners, veterans, religious organizations, schools, and qualifying housing. Some housing-related documents are supplemental affidavits or income worksheets, while others are initial or annual exemption claims; they serve different purposes and should not be treated as interchangeable.
Other forms address ownership changes and changes in assessed value. The catalog includes ownership statements for real property and oil and gas property, as well as claims involving transfers of a base-year value to a replacement residence. Separate applications concern assessment exclusions for certain types of new construction, and a decline-in-value application addresses a different assessment question. The titles indicate the topics, but do not establish which form applies to an individual property or situation.
The business and specialized property documents include property statements, reports, and supplemental schedules for areas such as aircraft, vessels, utilities, oil and gas, and industry-specific business property. These forms are distinct from homeowner exemption and ownership-change documents. The forms currently listed on this page are a selection of published forms associated with the Los Angeles County Office of the Assessor, not necessarily every document the office issues. Check the issuing agency’s current instructions for applicable versions, eligibility, supporting documents, deadlines, and submission methods.