Form ASSR-129, Property Data Change Request, is the form the Los Angeles County Office of the Assessor uses to correct property data that differs from the real characteristics of a property. It is one of the Los Angeles County property tax forms published by the Assessor, and it covers items such as units, building size, bedrooms and bathrooms, not disagreements about value. On FillingPDF you can fill out the form online and download or print the completed PDF; the Assessor receives it only by mail or email, as described below.
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What is ASSR-129?
The Property Data Change Request (ASSR-129) is a Los Angeles County Office of the Assessor form that property owners use to report discrepancies between the data appearing on the website and the actual characteristics of their property.
The form works as a before-and-after table. Under CHANGE REQUESTED, you enter what the Assessor's record now shows in the FROM column and the correct figure in the TO column for each item that is wrong. The items printed on the form are:
- Number of Units
- Main Building Size (Square Feet)
- Number of Bedrooms
- Number of Full Bathrooms, Number of 3/4 Bathrooms and Number of 1/2 Bathrooms
- Additional Structure Size (Square Feet)
- Other (specify)
A REMARKS box lets you explain the change, for example a change in use or an added building, garage or Accessory Dwelling Unit.
The form is expressly not for reporting differences of opinion about value. It ends with a certification signed by the property owner, which the form says is binding on every co-owner, and it warns that the Assessor's office may physically inspect the property to verify the request. The Assessor lists the form among its other forms, such as ASSR-451, Change of Mailing Address, which is a separate document.
Who needs to file ASSR-129?
The main group is property owners in Los Angeles County who find that the data about their property on the Assessor's website does not match the actual property. The form is signed by the property owner and asks for the owner's name(s), so it is meant for owners reporting their own property.
Typical situations are the ones the form's lines cover: the number of units, the size of the main building, the number of bedrooms, the number of full, 3/4 or 1/2 bathrooms, or the size of an additional structure. The remarks box mentions a change in use and an added building, garage or Accessory Dwelling Unit as examples.
Do not use this form to report value opinion differences; the form says so directly. Co-owners should know that the declaration is binding on each and every co-owner, even though one owner signs. The form does not describe signing by a representative, so call the Assessor at 213.974.2111 if someone else will act for the owner.
When to file ASSR-129
Submit the request when you notice that the property data shown on the website differs from the actual characteristics of your property. The form prints no deadline and no filing window, so it can be sent whenever you find a discrepancy.
Have the facts ready before you start: the Assessor's Identification Number, the current figure shown for each item and the correct figure. Because the Assessor's office may physically inspect the property to verify the request, make sure the figures you report are accurate. For questions about timing, the form gives the telephone number 213.974.2111.
How to fill out ASSR-129
Enter the property identification
Write the Assessor's Identification Number, the Owner's Name(s) and the Property Address in the three lines at the top of the form.
Add your contact details
Enter a Daytime Telephone and an Email Address. The form marks both as required.
Report the number of units
Under CHANGE REQUESTED, enter the number now shown in the FROM column and the correct number in the TO column on the Number of Units line, only if it is wrong.
Correct building and structure sizes
On Main Building Size and Additional Structure Size, enter the current and correct figures in square feet in the FROM and TO columns.
Correct the number of bedrooms
On the Number of Bedrooms line, enter the recorded count in FROM and the actual count in TO.
Correct the bathroom counts
Use the three bathroom lines: Full (toilet, sink, shower AND bathtub), 3/4 (toilet, sink, shower and NO bathtub) and 1/2 (toilet and sink). Enter FROM and TO for each type that is wrong.
Describe any other change
Use the Other line and specify any item not listed. Leave FROM and TO blank for items that are already correct.
Explain in the remarks
In REMARKS, describe the change, for example a change in use or an added building, garage or Accessory Dwelling Unit.
Sign the certification
The property owner signs on Signature of Property Owner. The declaration is binding on every co-owner, and the Assessor's office may inspect the property to verify the request.
Review and download the completed PDF
Check every FROM and TO figure, the telephone number and the email address, then download or print the completed PDF from FillingPDF and send it as described under How to submit.
How to submit ASSR-129
There are two channels printed on the form: mail and email.
- By mail: Office of the Assessor, Kenneth Hahn Hall of Administration, 500 W. Temple St., Room 183-19, Los Angeles, CA 90012.
- By email: send the completed form to [email protected].
The form is signed by the property owner and requires a daytime telephone number and an email address, so check both before sending. The form gives no fee and no other submission channel. For questions, call 213.974.2111; additional information is at http://assessor.lacounty.gov/. FillingPDF lets you fill out and download the PDF; submission follows the channels above.
Common mistakes to avoid
- Using Form ASSR-129 to dispute the assessed value; the form says not to use it to report value opinion differences.
- Leaving out the daytime telephone number or the email address, both of which the form marks as required.
- Counting a bathroom in the wrong category: Full has toilet, sink, shower AND bathtub; 3/4 has toilet, sink, shower and NO bathtub; 1/2 has toilet and sink only.
- Filling in only the TO column and leaving FROM blank, so the Assessor cannot see which recorded figure is being changed.
- Skipping the Remarks box when the change involves a change in use or an added building, garage or Accessory Dwelling Unit.
- Sending the form unsigned; the certification must carry the Signature of Property Owner.
- Mailing the form to an address other than Room 183-19, 500 W. Temple St., Los Angeles, CA 90012, or emailing it to an address other than [email protected].
- Reporting figures you cannot support, when the Assessor's office may physically inspect the property to verify the request.
Frequently asked questions
What is Form ASSR-129 used for?
Form ASSR-129, Property Data Change Request, is used to report discrepancies between the data appearing on the Los Angeles County Assessor's website and the actual characteristics of a property, such as units, building size, bedrooms or bathrooms.
Can I use ASSR-129 to challenge my property's assessed value?
No. The form states that it must not be used to report value opinion differences. It is only for correcting property data, such as the number of bedrooms or the size of a structure. For other matters, call the Assessor at 213.974.2111.
Where do I send the Property Data Change Request?
Mail it to Office of the Assessor, Kenneth Hahn Hall of Administration, 500 W. Temple St., Room 183-19, Los Angeles, CA 90012, or email it to [email protected]. The form prints no other channel.
What is the difference between a full, 3/4 and 1/2 bathroom on this form?
A full bathroom has a toilet, sink, shower AND bathtub, combined or separate. A 3/4 bathroom has a toilet, sink, shower and NO bathtub. A 1/2 bathroom has only a toilet and sink. Report each type on its own line.
Is a phone number and email required on ASSR-129?
Yes. The form marks both Daytime Telephone and Email Address as required. Enter them in the contact lines under the property address.
Will the Assessor inspect my property after I file?
It may. The certification on the form says the Assessor's office may make a physical inspection of the property to verify the data change request, so report figures you can support.
Who signs the form if there is more than one owner?
The form has one line for the Signature of Property Owner, and the declaration states that it is binding on each and every co-owner. The form does not describe signing by a representative; call 213.974.2111 with questions.
Can I fill out ASSR-129 online?
You can fill out the PDF online on FillingPDF and download or print it. FillingPDF is an independent service and does not send the form to the Assessor; you mail or email it yourself through the channels on the form.
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