Property Assessment 100% open

Cincinnati, OH

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 This data is updated on a quarterly basis with the parcel data.
Available free online Yes
Available free of charge Yes
In an open format DBF, SHP, SHX, XML
findable 3 see response for parcel data (because this data is actually contained within the parcel data set, so that all tax assessment is automatically geographically linked to parcel polygons)
findable_steps I went to the CAGIS homepage (where I was directed via google search for this data), went to the free GIS layer download link, and followed instructions for downloading CAGIS open data quarterly. This file was inside that downloadable zipfile.
Collected by government Yes
usability 2 This was easily consumable in any software that will read one of the above data formats (including many free downloadable solutions, like Tableau Public).
collector_name Cincinnati Area Geographic Information Systems (CAGIS) For more information about CAGIS:
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 href=""">rel="nofollow"> - CAGIS Free GIS layer download site
This data is also searchable by single parcel on the Hamilton County Auditor's website ( for users who want more information about the history/deed etc for a single property: however, this is much more clunky and certainly not a reasonable open data alternative.

Meta data

Data location - CAGIS Free GIS layer download site
Data licence
Data format   DBF, SHP, SHX, XML
Reviewer   Tamieigh L
Submitters   Tamieigh L
Last modified   Tue Feb 06 2018 14:54:35 GMT+0000 (UTC)