Property Assessment 100% open

Washington, DC

What data is expected?

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)

  • 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

How open is the data?

All answers

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 http://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 http://opendata.dc.gov/datasets/integrated-tax-system-p - Integrated Tax System Public Extract, http://opendata.dc.gov/datasets/integrated-tax-system-p - Integrated Tax System Public Extract Facts, http://opendata.dc.gov/datasets/integrated-tax-system-p - Integrated Tax System Public Extract Vacant Property, http://opendata.dc.gov/datasets/integrated-tax-system-p - Integrated Tax System Public Extract Property Sales, http://opendata.dc.gov/datasets/integrated-tax-system-p - Integrated Tax System Public Extract Tax Rate Codes, http://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.

Meta data

Data location   http://opendata.dc.gov/datasets/integrated-tax-system-p - Integrated Tax System Public Extract
   http://opendata.dc.gov/datasets/integrated-tax-system-p - Integrated Tax System Public Extract Facts
   http://opendata.dc.gov/datasets/integrated-tax-system-p - Integrated Tax System Public Extract Vacant Property
   http://opendata.dc.gov/datasets/integrated-tax-system-p - Integrated Tax System Public Extract Property Sales
   http://opendata.dc.gov/datasets/integrated-tax-system-p - Integrated Tax System Public Extract Tax Rate Codes
   http://opendata.dc.gov/datasets/integrated-tax-system-p - Integrated Tax System Public Extract Mixed Tax Types
Data licence   https://creativecommons.org/licenses/by/4.0/
Data format   CSV, GeoJSON, JSON, KML, SHP
Reviewer   Alexandre Santos
Submitters   Alexandre Santos
Last modified   Tue Feb 27 2018 18:28:06 GMT+0000 (UTC)