445 4 AVENUE is a mid-century 1953 building, 1 unit in Park Slope, NYC. Owned by J&B REALTY LLC. Public records show 18 open violations, 1 311 complaint on file.
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Brooklyn · February 2026
Best & worst months to sign a lease
Potential savings: ~7% by timing your move to November.
Asking rent per bedroom type — switch tabs to see each with effective (concession-net) rent.
Monthly counts over the last 7 years · all data sources
No HPD records on file in the last 7 years.
Portfolio-level grade reflects the landlord's buildings across NYC, weighted by unit count. Individual building grades may differ.
View full landlord profileTop 1 by score · of 3 total
ACRIS deeds and regulatory filings
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.
Illegal Dumping — Removal Request