NYC Building Data & Insights
Original analysis of 1.8M NYC 311 complaints and 2M HPD violations. Read guides, trends, and reports updated weekly by our research team.
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City-wide complaint analysis and statistical reports.
Building safety and compliance trends grouped by borough.
Deep-dives into local housing quality and risk rankings.
Understanding HPD violation classes and correction windows.
Comparing pricing indexes with actual building maintenance logs.
Actionable guides on tenant rights, laws, and court actions.
Recent Articles
The 10 Most Complained-About Buildings in NYC (2025 Data)
We analyzed 1,857,167 NYC 311 complaints filed since January 2024. Here are the 10 most complained-about buildings in Ne…
NYC's Most Accountable Landlords: Grade A Buildings With Strong Open Violation Records (2025 Data)
Of 89,291 NYC buildings with open HPD violations, 76,715 received a Grade A — meaning few or no Class C (immediately haz…
NYC's Most Neglected Buildings: The Grade F Landlords With the Most Open Violations (2025 Data)
Using NYC HPD data for 808,517 open violations across 89,291 buildings, we ranked the worst offenders by Class C (immedi…