Toronto's 311 open data carries the broadest documented limits; building permits break at 2005; business-licence gaps rest partly on third-party audits

Asked:

“What data quality problems have been documented for Toronto's building permits, business licences, and 311 service request open datasets?”

This report synthesizes 130 candidate issue statements collected from broad web searches as of 2026-10-08, deduplicated to 26 distinct documented problems across three City of Toronto open datasets. Sources span official City documentation, university research, and third-party audits across multiple independent hosts; it is a synthesis of publicly documented problems found, not an exhaustive census of every defect.

Where the documented problems sit

Seven issue categories against the three datasets. Each cell counts distinct documented issues; colour marks the most serious kind present — a true data defect, a fitness-for-use caveat, or an intentional scope or privacy exclusion. Click a cell for the issues behind it.

data defect fitness-for-use caveat intentional scope / privacy exclusion nothing documented in the reviewed sources — darker shade means more distinct issues

Click a cell above to see the issues behind it

Findings

Building permits

12 distinct documented issues. The deepest problem is historical: the City's own Open Data team found rule and classification changes around 2005 that render periods incomparable, and visualized only post-2005 permits.

Business licences

3 distinct documented issues — the narrowest record of the three. The personal-licensee exclusion is intentional and appears in the dataset's own documentation (repeated across one archive's many listing pages, counted here once). The ward-assignment gap is a third-party audit finding, not a City-certified total.

311 service requests

11 distinct documented issues, with the strongest official documentation of the three: a City Open Data guest post states the open file covers only 30–35% of requests and 6 of 45 divisions, and City Council material warns 311 cannot by itself measure service performance.

All 26 documented issues

Dataset	Category	Issue	Kind	Documented by	Source

Method: 130 candidate issue statements (40 building-permit, 40 business-licence, 50 311) gathered from broad web searches as of 2026-10-08 and reviewed; semantically repeated statements were deduplicated to 26 distinct issues — one archive's personal-licensee exclusion, repeated across 36 listing pages, counts once. Each cell in the matrix counts distinct issues, not source pages; repeated search pages were not treated as corroboration. City of Toronto Open Data and University of Toronto sources were prioritized; third-party audits are labelled as such. A brief-referenced 25,264 unknown-postal-FSA audit count did not appear in the reviewed rows and is omitted. This is a synthesis of publicly documented problems, not an exhaustive census.

This report was generated automatically by Keenable SELECT at a user's request, from publicly available web sources linked herein. Keenable does not review, verify, or endorse its contents and makes no representation as to accuracy, completeness, or timeliness; AI-based extraction may contain errors. Nothing in this report is investment, legal, financial, or other professional advice. All trademarks and referenced content remain the property of their respective owners; no affiliation or endorsement is implied. To report an error, rights concern, or request removal: legal@keenable.ai.