Assessor Data
Comprehensive. Detailed. Up-to-Date.Assessor Data Pinpoints Property Details on Parcels Nationwide
Covering more than 155 million properties in more than 3,000 counties nationwide, ATTOM’s multi-sourced assessor data offers a full menu of specific property data around the country. The data set includes publicly available information collected by county tax assessor offices, which can then be collated into specialized reports at various levels of geography.
The Best Assortment of Assessor Data
No matter what your business’s ultimate use is for property data, ATTOM warehouses
the leading and essential types of assessor data needed to facilitate detailed analysis.
Assessor data details include:

Property Identification
- Assessor’s Parcel Number (APN)
- FIPS code

Ownership
- Up to four owner names
- Homeowner / Exemptions
- Ownership rights / Vesting details
- Individual / Trust / Company identifiers

Address
- Property address
- Owner mailing address

Legal Description
- Block / Lot
- Subdivision / Tract
- Section-Township-Range
- Additional text (limited metes and bounds)

Values and Taxes
- Land / Improvement / Total
- Tax amount
- Assessed / Appraised / Market values

Property Characteristics
- Beds / Baths / Room count
- Interior and exterior features
- Square footage (Gross / Building / Living / Basement)
- Lot details (Footage / Pool / and more)
How Can You Use ATTOM’s Assessor Data?
Real Estate Portals
Home and property characteristics are the essence of any piece of property. Enhance your content with summary or full assessor parcel data.
Insurance
From the number of bedrooms and bathrooms to the construction material used, assessor data is a critical baseline in generating property and casualty insurance policies.

Mortgage
Confirming address, ownership, and understanding beds, baths and square footage are part of underwriting a mortgage and often re-verified during the escrow process.
Marketing
Marketers use assessor property data to create targeted lists of homes and homeowners based on home size,
year built, occupancy status, length of ownership, property taxes, and more.
Home Valuations
Companies performing valuations, BPOs, and appraisals use trusted
tax assessor data to automate these processes, making them faster and more efficient.
eCommerce
For online marketplaces that need to validate shipping information we can confirm the address, provide a parsed address back and correlate to FIPS, zip+4 and other valuable information.
A Variety of Solutions for Your Data Needs
ATTOM can deliver your assessor data in a number of ways including:
- Data-as-a-Service (DaaS)
- Bulk Data Licensing
- Property Data APIs
- Market Trends
- Marketing Lists
- Match & Append
Learn more about ATTOM Data and view our Table of Data Elements.