Data Downloads

We are excited to announce the launch of our new dataset feature, now available for free download on our website. This feature allows you to access datasets at no cost.

Please keep in mind that after downloading the data, you will need to format and organize it to meet your specific needs. Please refer to our quick guide for additional information.

If you have any questions or require assistance while using this new feature, please do not hesitate to contact us at [email protected] or review the FAQ section below. We are committed to providing support and ensuring a seamless experience for you.

DISCLAIMER – INDEMNIFICATION

User understands and agrees that Maricopa County does not guarantee the accuracy of the data and information requested and hereby expressly disclaims any responsibility for the truth, lack of truth, validity, invalidity, accuracy, inaccuracy of any said data and information. The parcel lines on maps are for illustration purposes only and are not intended to be used as a survey product. User accepts responsibility for unauthorized use or transmission of any such data or information in its actual or altered form.

The scheduled updates to the datasets may change. Please check the file dates to verify when the dataset was last updated.

Contact Information
Phone: 602-506-3769
Department Inbox: [email protected]

Data Files
  • Secured Master

    This includes detailed information regarding the parcel including owner, property address, legal description, legal classification, valuations, etc.
    Secured Master Download (ZIP)

  • Residential Master

    All detailed residential component information used to calculate values (i.e. livable square footage, construction year, type of building).
    Residential Master Download (ZIP)

  • Sales Affidavits

    Contains sales data from Sales Affidavits recorded with the Maricopa County Recorder’s Office, includes parcel number, grantor, grantee, sales date, and sales price.
    Sales Affidavits Download (ZIP)

  • Personal Property

    Contains business personal property data, including name of business, location of business and valuation.
    Personal Property Download (ZIP)

  • Apartment Master

    Contains specific information regarding apartments including duplex, triplex, and four-flex properties, includes parcel number, number of units, complex name with associated information.
    Apartment Master Download (ZIP)

  • Commercial Master Base

    All detailed commercial component information used to calculate values (i.e. Square Footage, construction year, type of building, etc.).
    Commercial Master Download (ZIP)

  • Notice of Value

    Contains parcels scheduled to receive an Annual Valuation Notice. Includes the parcel number, owner name, and value.
    Notice of Value Download (ZIP)

  • Notice Of Change

    Contains parcels scheduled to be mailed for the September Notice of Change. Includes the parcel number, owner name, value. Etc.
    Notice of Change Download (ZIP)

  • Land Components

    All detail land component information used to calculate values (i.e. location factors, topography, flood, etc).
    Land Components Download (ZIP)

  • Subdivision Index

    Contains all information regarding subdivisions, including MCR number, parcel ranges, and date recorded.
    Subdivision Index Download (ZIP)

  • Rental Registration

    Contains a listing of residential rental properties registered with the Maricopa County Assessor’s Office, includes owner name, mailing address, property address, and agent information.
    Rental Registration Download (ZIP)

Geo Spatial Data

FAQ

Data Downloads provides public access to property and assessment data from the Maricopa County Assessor’s Office. Available data includes property details, assessed values, and related information.
No. All data files available on the Data Downloads page are free to download.

You can download a variety of property-related datasets, including:

  • Residential property data
  • Commercial property data
  • Apartment property data
  • Property sales records
  • Personal Property data
  • Land and subdivision information
  • Rental Registration data
  • Notices of Value and Notices of Change

No. If the data you need is already available on the Data Downloads page, you may download it directly without submitting a request form.

A request form is required only if you are submitting a formal public records request.

  1. Download and complete the Non-Commercial Purpose Public Record Request or the Commercial Purpose Public Record Request form.
  2. Send your public record request to [email protected]

No. The County does not guarantee that the data is complete, accurate, or up to date. All data is provided "as is."
No. Parcel maps are provided for reference purposes only and should not be used as legal documents or official surveys.
Users are responsible for how the data is accessed, used, shared, or modified.
Some datasets include multiple date or year fields. Make sure you are filtering the correct field, such as sale date, tax year, notice year, or effective year. Also check when the dataset was last updated.
Some public data files contain a large number of records. Large files may require more advanced software or additional time to open and filter.
The office can provide general guidance about which publicly available dataset may contain certain information. The office does not provide custom spreadsheet formatting, data conversion, software training, or individualized analysis.
Try using software designed for large CSV, TXT, database, or GIS files. You may need technical assistance from someone familiar with large datasets.