324 21 STREET is a mid-century 1931 building, 4 units in Park Slope, NYC. Owned by 324 21ST STREET LLC. Public records show 51 open violations, 38 311 complaints on file.
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Brooklyn · February 2026
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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
(A) § HMC:FILE ANNUAL BEDBUG REPORT IN ACCORDANCE WITH HPD RULE AS DESCRIBED ON THE BACK OF THIS NOTICE OF VIOLATION OR AS DESCRIBED ON HPDS WEBSITE, WWW.NYC.GOV\HPD, SEARCH BED BUGS.
§ 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR AT CEILING IN THE 2nd ROOM FROM NORTH LOCATED AT APT 2, 2nd STORY, 1st APARTMENT FROM SOUTH AT WEST
§ 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR AT CEILING IN THE BATHROOM LOCATED AT APT 2, 2nd STORY, 1st APARTMENT FROM SOUTH AT WEST
§ 27-2005 ADM CODE REPLACE WITH NEW THE MISSING HEAT RISER ESCUTCHEON PLATE AT CEILING AT WEST IN THE 2nd ROOM FROM NORTH LOCATED AT APT 2, 2nd STORY, 1st APARTMENT FROM SOUTH AT WEST
§ 27-2005 HMC: PROPERLY REPAIR OR REPLACE THE BROKEN OR DEFECTIVE BELL BUZZER/INTERCOM SYSTEM FROM MAIN INTERCOM AT BUILDING ENTRANCE TO APARTMENT INTERCOM SYSTEM AT EAST WALL IN THE ENTRANCE LOCATED AT APT 2, 2nd STORY, 1st APARTMENT FROM SOUTH AT WEST
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
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.
HPD Class A Violation — (A) § HMC:FILE ANNUAL BEDBUG REPORT IN ACCORDANCE WITH HPD RULE AS DESCRIBED ON THE BACK OF THIS NOTICE OF VIOLATION OR
HPD Class B Violation — § 27-2005 ADM CODE REPLACE WITH NEW THE MISSING HEAT RISER ESCUTCHEON PLATE AT CEILING AT WEST IN THE 2nd ROOM FROM NORT
HPD Class B Violation — § 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR AT CEILING IN THE BATH
HPD Class B Violation — § 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR AT CEILING IN THE 2nd
HPD Class B Violation — § 27-2005 HMC: PROPERLY REPAIR OR REPLACE THE BROKEN OR DEFECTIVE BELL BUZZER/INTERCOM SYSTEM FROM MAIN INTERCOM AT BUIL
HPD Class I Violation — §27-2107 ADM CODE OWNER FAILED TO FILE A VALID REGISTRATION STATEMENT WITH THE DEPARTMENT AS REQUIRED BY ADM CODE §27-20
HEAT/HOT WATER — ENTIRE BUILDING
PAINT/PLASTER — CEILING
ELECTRIC — LIGHTING
HEAT/HOT WATER — APARTMENT ONLY