830 UNION STREET, Brooklyn, NY, 11215 is a 4-unit rental building in Park Slope, NYC. See every violation, 311 complaint, tenant review, and the LucidIQ score — before you sign a lease.
Rent stabilization and seismic safety
DHCR registration & tenant protections
Unit 4R Pros: Location Landlord responsiveness Cons: Landlords are assholes. You're paying a huge premium for location but everything else is pretty dated and unremarkable.
Monthly counts over the last 7 years · all data sources
No HPD records on file in the last 7 years.
Asking rent per bedroom type — switch tabs to see each with effective (concession-net) rent.
Portfolio-level grade reflects the landlord's buildings across NYC, weighted by unit count. Individual building grades may differ.
View full landlord profileACRIS deeds and regulatory filings
Missed Collection — Compost
Missed Collection — Compost
Rodent — Rat Sighting
Rodent — Rat Sighting
Rodent — Signs of Rodents
Water System — Hydrant Leaking (WC1)
Water System — Dirty Water (WE)
Brooklyn · February 2026
Best & worst months to sign a lease
Potential savings: ~7% by timing your move to November.
South Park Slope and the Gowanus borderlands offer the brownstone beauty of Park Slope with slightly more edge — the Gowanus Canal is being cleaned up, Old Stone House park hosts community events, and Fifth Avenue's bar and restaurant scene is unpretentious and local.