Tax History
Dataset
Description
The historical record of the assessed values of properties made by the County Tax Assessor for the purpose of calculating property taxes each year.
| ATTOM ID | 145695081 |
| Tax Year | 2013 |
| Assessed Value | $48,399 |
| Assessed Land Value | $8,050 |
| Assessed Improvement Value | $40,349 |
| Market Value | $138,284 |
| Market Land Value | $28,000 |
| Market Improvement Value | $115,284 |
| Homeowner Exemption | $0 |
| Disabled Exemption | $0 |
Usage
Mortgage: As part of risk mitigation, mortgage companies have a need to closely monitor property prices after mortgages and other loans have been provided.
Property Analysis: Any analysis based on property values can make use of the assessed values as an indication of property values
Note: Market values sourced from County Tax Assessors are usually considered to be only a rough approximation of a property's value. For applications requiring a more accurate estimate of a property's value, AVM models should be used. See AVM. Property listings can also provide an alternative source of a property's market value.
Sourcing
Many, but not all, counties make assessed values available as public record data that can be collected in the same way as other data published by County Tax Assessor. ATTOM Collects this data and matches it against its property databases, assigning an ATTOM ID which allows our customers to cross-reference this data with other property data. Counties update assessed values at most once per year, with some counties only updating data every 2-3 years.
Coverage
The following table summarizes the number of properties tax records collected each year
| Year | Properties | Year | Properties |
| 2010 | 2.6 million | 2017 | 146.9 million |
| 2011 | 32.3 million | 2018 | 149.9 million |
| 2012 | 79.4 million | 2019 | 150.4 million |
| 2013 | 97.4 million | 2020 | 152.7 million |
| 2014 | 104.7 million | 2021 | 154.7 million |
| 2015 | 116.1 million | 2022 | 138.2 million |
| 2016 | 141.7 million | 2023* | 7.7 million |
Tables and Views
The following tables can be used to access Address information. When delivering solutions to customers, some or all of the address information found in these tables may be consolidated into one or more views.
AssessedValues
The latest known assessed value for each property. See Assessed Values. Each county has its own timetable as to when it published the assessed values of properties.
Rows: 167 million
Columns: 14
Family: Property
Type: Point
TaxHistory
Property values assessed by County Tax Assessor for each year on US properties.
Rows: 1.5 billion
Columns: 25
Family: Property
Type: Point