Updates February 21, 2026
OpenStoop launched publicly on February 19th. Within 48 hours, hundreds of New Yorkers tested their buildings and told us what we got wrong. Here's everything we fixed.
Scoring Accuracy
- Removed 128,000 city infrastructure complaints (hydrant leaks, water mains) from building scores — only building plumbing issues count now
- Removed rat inspection data from safety scores — NYC DOB pest control inspections reflect citywide conditions, not building management quality
- Fixed serial complainer bias — capped at 3 complaints per category per day per building, so one person filing thousands of complaints no longer tanks a score
- Fixed rent-stabilization false positives on 16,940 small buildings (1-2 units are almost never rent-stabilized)
- Co-ops and condos no longer incorrectly flagged as rent-stabilized
- Filtered 23,000 buildings with outdated management registrations from scoring penalties
- Fixed F-grade score compression — buildings were all clamped to score 71, now spread across the full range
- Fixed D-grade clustering — 26,000 buildings were stuck at score 51, now properly distributed
- Fixed grade inversion bug where search results showed a different grade than the building detail page
Building Flags
- Active facade repairs no longer trigger auto-F grade — only truly unsafe and neglected facades do
- Buildings with active ECB hazardous violations can no longer score above D grade
- Added "registration may be outdated" warnings for buildings with management data older than 3 years
- Audited all 23 building flags for accuracy — fixed 7, confirmed 16 correct
- All facade-related flags now use proper 5-year recency window matching NYC FISP inspection cycles
Search & Display
- Fixed borough disambiguation — searching "Nassau St Brooklyn" now correctly returns Brooklyn results instead of Manhattan
- Corner building search improved — addresses that face two streets now resolve correctly
- Year built no longer shows incorrect comma formatting (1,920 vs 1920)
- 91,000 non-residential buildings now properly show "Not Rated" instead of misleading scores
Data Quality
- 858,000+ NYC buildings with unified timelines from 28 public data sources
- Portfolio scoring rebuilt — removed unreliable PLUTO owner data that was grouping thousands of unrelated buildings together, now uses only verified HPD corporate registrations
- 200-building deep audit completed with full database-to-website consistency verification
- Automated regression testing guards against score regressions after every update
Community Driven
- Every fix on this page traces to a specific user report from NYC renters, owners, and housing advocates
- Responded to 160+ comments and dozens of direct messages with individual building investigations
- Several users identified scoring issues by knowing their own buildings better than any algorithm — those insights directly improved accuracy for all 767,000 scored buildings
Latest update: March 17, 2026 →
OpenStoop scores 858,000+ residential buildings across all five boroughs using public data from HPD, DOB, ECB, DOF, and 311. Our scoring methodology is transparent and continuously improving. Read our methodology