The Residential Rental Property Registration (Form FOR-131) is the form the Maricopa County Assessor uses to register a residential property as a rental, and it is one of the Maricopa County property tax forms the Assessor publishes in its residential property library. The property owner or a designated agent completes it, and the owner or statutory agent signs. On this page you can fill out the form online on FillingPDF and download or print the completed PDF; the original form and the Assessor's other residential forms are published at mcassessor.maricopa.gov.
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What is FOR-131?
The Residential Rental Property Registration (Form FOR-131 V4) is the Maricopa County Assessor form on which a property owner, or the owner's designated agent, registers a residential rental property and identifies the people connected to it.
The form has five blocks. Property Information identifies the property by parcel number or mobile home account number, with its street address and year built. Ownership Information gives the owner's name and contact details, plus a contact for entity owners such as corporate officers, managing or administrative members, general partners and trustees. Out-of-State Owner's Designation of Agent names an agent for an owner who is out of state. A supporting documentation section follows, with a line for the renter or occupant's name and relationship to the owner. The last block is an attestation signed by the owner or statutory agent.
The attestation states that the information is accurate to the best of the signer's knowledge and that the request may result in an increase in taxes.
The Assessor's residential property forms page lists related items: a Spanish version, Registro de Propiedad de Alquiler Residencial (Español), DocuSign versions of the form, a separate Remove a Rental Registration form and a Request for Residential Legal Class Change. This form is the registration itself, not the removal or the legal class change.
Who needs to file FOR-131?
The form says it must be completed by the property owner or their designated agent. Use it if you own a residential property that is rented or occupied as described on the form, or if you act for the owner.
- Entity owners. The form requires contact information for a corporate officer, managing or administrative member, general partner or trustee, as applicable to the owner.
- Out-of-state owners. The Out-of-State Owner's Designation of Agent block names the agent who acts for the owner, with the agent's name, phone, mailing address and email.
- Owners claiming a qualified family member's primary residence. The form has a Supporting Documentation section for a family member who lives in the property as a primary residence. It lists a natural or adopted child and certain in-laws among qualified family members.
- Agents. An authorized agent may sign for the owner. The signature line reads Owner/Statutory Agent Signature, and the attestation says the signer is the owner or an authorized agent acting on the owner's behalf.
The form does not say who is exempt. To remove an existing registration, the Assessor's forms page lists a separate Remove a Rental Registration form.
When to file FOR-131
The form prints no deadline or filing window. You complete it when the owner or an authorized agent is ready to ask the Maricopa County Assessor to register a residential property as a rental. The signed attestation notes that the request may result in an increase in taxes, so review the form before you sign. Have the parcel number or mobile home account number and the supporting documents ready before you start, because the form states that supporting documentation is required. For timing questions, use the contact options on the Assessor's website, including its virtual appointment scheduling.
Documents you need
- For a qualified family member's primary residence: a copy of the family member's driver's license or voter registration card, listed on the form as proof for a family member.
- For a qualified family member's primary residence: a motor vehicle registration or a utility bill (gas, water or electric), listed on the form together with the license or voter card.
- Other supporting documentation under the form's Supporting Documentation heading; the form notes that the documents must show the items it names, including the timeframe.
How to fill out FOR-131
Identify the property
Under Property Information, enter the Parcel Number, or the Mobile Home Account Number if it is a mobile home. Then enter the property street address, city, state, Zip/Postal Code and Year Built.
Enter the owner's details
Under Ownership Information, give the Owner Name, Phone, Mailing Address, City, State, Zip/Postal Code, Country and Email.
Add the entity contact if required
If the owner is an entity, complete the block marked Required for the corporate officer, managing or administrative member, general partner or trustee: Contact Name, Phone, Mailing Address, Country and Email.
Designate an agent if out of state
If the owner is out of state, complete the Out-of-State Owner's Designation of Agent block with the Agent Name, Phone, Mailing Address, City, State, Zip/Postal Code, Country and Email.
Review the supporting documentation section
Read the Supporting Documentation Is Required note and the Primary Residence of Qualified Family Member section so you know which documents the form lists for a family member, including the timeframe note.
Name the renter or occupant
Enter the Renter/Occupant Name and the Relationship to Owner.
Read the attestation
The attestation states that you are the owner or authorized agent, that the information is accurate to the best of your knowledge, and that the request may result in an increase in taxes.
Review, sign and download the PDF
Check every entry, then have the owner or statutory agent sign and date the form. Download or print the completed PDF from FillingPDF and assemble it with the supporting documents as described under How to submit.
How to submit FOR-131
The form itself prints no mailing address, portal or fax number. The Maricopa County Assessor publishes it on its residential property forms page, https://mcassessor.maricopa.gov/forms/residential_property/, where the library lists the following related entries:
- Submit Residential Rental Property Registration: an entry in the Residential property category of the Assessor's forms library, listed ahead of the form itself. Use it to see how the Assessor takes the completed form.
- DocuSign Version: the library lists DocuSign versions of the registration and of its Spanish edition.
- Spanish version: Registro de Propiedad de Alquiler Residencial (Español).
Sign the form as the owner or statutory agent, date it and attach the supporting documents the form requires before you send it. For questions about where and how to send it, use the Assessor's Contact Us page or its Schedule a Virtual Appointment option. FillingPDF lets you fill out and download the PDF; submission follows the Assessor's channels described above.
Common mistakes to avoid
- Leaving both the parcel number and the mobile home account number blank; the form identifies the property by one or the other.
- Skipping the corporate officer, managing or administrative member, general partner or trustee contact block when the owner is an entity; the form marks this information as required.
- Omitting the Out-of-State Owner's Designation of Agent block when the owner is out of state, or leaving the agent's address and email incomplete.
- Sending the form without supporting documentation, which the form states is required.
- Providing family member documents that do not show the timeframe the form's note requires.
- Leaving the Renter/Occupant Name and Relationship to Owner lines empty.
- Submitting the form unsigned or undated; the attestation requires the Owner/Statutory Agent Signature and a date.
- Signing as the owner when you are neither the owner nor an authorized agent acting on the owner's behalf.
Frequently asked questions
What is the Residential Rental Property Registration form?
It is Form FOR-131 V4, the Maricopa County Assessor's form for registering a residential rental property. It records the property, the owner, any entity contact or out-of-state agent, the renter or occupant, and an attestation signed by the owner or statutory agent.
Who has to complete Form FOR-131?
The form says the property owner or their designated agent must complete it. The signature line is for the Owner/Statutory Agent, and the attestation confirms the signer is the owner or an authorized agent acting on the owner's behalf.
Do I need an agent if I own the property from out of state?
The form includes an Out-of-State Owner's Designation of Agent block where you enter the agent's name, phone, mailing address and email. Complete it if the owner is out of state.
What documents do I attach to the rental registration?
The form states that supporting documentation is required. For a qualified family member's primary residence it lists a driver's license or voter registration card plus a motor vehicle registration or a gas, water or electric utility bill, and the documents must show the timeframe noted on the form.
Can registering a rental property increase my taxes?
The attestation you sign says the request may result in an increase in taxes. The form gives no amounts or rates, so contact the Maricopa County Assessor with questions about how it affects your property.
Is there a Spanish version of the rental registration?
Yes. The Assessor's residential property forms page lists Registro de Propiedad de Alquiler Residencial (Español), along with DocuSign versions of the registration and of the Spanish edition.
How do I remove a rental registration in Maricopa County?
The Assessor's forms page lists a separate form called Remove a Rental Registration. Form FOR-131 is the registration form and is not used for removal.
Can I fill out Form FOR-131 online on FillingPDF?
Yes. You can fill out the PDF online on FillingPDF and download or print it. FillingPDF is an independent service and does not file the form with the Maricopa County Assessor; you submit it through the Assessor's channels.
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