U.S. City Open Data Census
Powered by Open Data Census
Data about assessed property values including location, assessed value, taxes owed, and owner. Many US cities raise a substantial percentage of annual revenue via property tax assessment. Transparent public access to property assessment data helps keep city tax assessors accountable, allowing property owners to see how their property has been assessed relative to other parcels and providing explanatory context for property taxes owed and/or helping to justify appeals to assessments perceived to be unfair. Property assessment data also helps the public keep property owners accountable. (More info)
| Question | Answer | Comment |
|---|---|---|
| Openly licensed | Yes | |
| Available in bulk | Yes | |
| Up-to-date | Yes | See field EXTRACTDAT |
| Available free online | Yes | Freely available however option to create an ArcGIS Online account in order to build web maps using ArcGIS Online. |
| Available free of charge | Yes | Freely available however option to create an ArcGIS Online account in order to build web maps using ArcGIS Online. |
| In an open format | CSV, GeoJSON, JSON, KML, SHP | |
| findable | 4 | |
| findable_steps | Search keyword tax assessment | District of Columbia Open Data DC |
| licence_url | https://creativecommons.org/licenses/by/4.0/ | |
| Collected by government | Yes | |
| usability | 3 | |
| collector_name | Government of the District of Columbia | Shared by the DC Office of the Chief Technology Officer who administers https://opendata.dc.gov. |
| characteristics | Location (may be an address or parcel number), Land area, Property details (type, use, units, description, and/or built improvements, etc.), Assessed value, Taxes owed, Property owner | |
| location | https://opendata.dc.gov/datasets/integrated-tax-system-p - Integrated Tax System Public Extract, https://opendata.dc.gov/datasets/integrated-tax-system-p - Integrated Tax System Public Extract Facts, https://opendata.dc.gov/datasets/integrated-tax-system-p - Integrated Tax System Public Extract Vacant Property, https://opendata.dc.gov/datasets/integrated-tax-system-p - Integrated Tax System Public Extract Property Sales, https://opendata.dc.gov/datasets/integrated-tax-system-p - Integrated Tax System Public Extract Tax Rate Codes, https://opendata.dc.gov/datasets/integrated-tax-system-p - Integrated Tax System Public Extract Mixed Tax Types | Public extract of the database used for sending tax bills. It is also known as tax assessment roll. ITS stores comprehensive tax information such as ownership, mailing addresses etc of record lots, tax lots, parcels, condominiums and federally owned lands such as reservations and appropriations. The ITS database also processes notices and tax bills. This can often be related to other property layers using the SSL key field. |
