# 4200 Ave K, Brooklyn What New York City's public records say about this building. Page: https://blueflo.tech/b/4200-avenue-k-brooklyn > These are city records, not an inspection by Blueflo. Every item shows its source and the date it was last checked. ## In one line 81 open immediately hazardous (class C) HPD violations about pests and fire safety and heat or hot water and doors and windows and walls, floors and stairs and lead-based paint and mold and leaks and plumbing (Housing Maintenance Code Violations, as of 2026-10-23) ## The building - **Year built:** 1955 (PLUTO (tax lot data), as of 2026-08-24) - **Stories:** 6 (Buildings Subject to HPD Jurisdiction, as of 2026-08-12) - **Homes:** 108 (Buildings Subject to HPD Jurisdiction, as of 2026-08-12) ## Worth knowing - 81 open immediately hazardous (class C) HPD violations about pests and fire safety and heat or hot water and doors and windows and walls, floors and stairs and lead-based paint and mold and leaks and plumbing - 4 hazardous (class 1) building code violations from 2023–2026 are still open - 84 heat or hot water complaints filed with the city last winter - Basement on record, and the city's stormwater map shows flooding here in at least one storm scenario - 349 open HPD violations about building conditions ## Also on record - City stormwater map shows deep and contiguous flooding at this building in the Extreme storm, 2080 sea levels scenario ## Clean in the records - Water service line on record as non-lead (field inspection) (Lead Service Line Location Coordinates, as of 2026-01-30) - Boiler inspection filed Oct 2026 with no defects reported (DOB NOW: Safety Boiler, as of 2026-10-23) - Facade filed as safe (Aug 2021) (DOB NOW: Safety – Facades Compliance Filings, as of 2026-10-23) - Outside FEMA's 1% annual-chance flood zone (FEMA National Flood Hazard Layer, as of 2026-10-24) - Elevator periodic inspection filed within the last year (DOB NOW Elevator Safety Compliance, as of 2026-10-23) ## Building systems - **Boiler inspection filings:** Latest accepted inspection Oct 2026, defects reported: no (DOB NOW: Safety Boiler, as of 2026-10-23) - **Facade rating:** Safe (cycle 9, filed Aug 2021) (DOB NOW: Safety – Facades Compliance Filings, as of 2026-10-23) - **Water service line:** Non-Lead (field inspection) (Lead Service Line Location Coordinates, as of 2026-01-30) - **FEMA flood zone:** Outside FEMA's 1% annual-chance flood zone: X (FEMA National Flood Hazard Layer, as of 2026-10-24) - **Stormwater flooding:** Extreme storm, 2080 sea levels: Deep and contiguous flooding (1 ft+); Moderate storm, 2050 sea levels: Not in mapped flooding; Moderate storm, today's sea levels: Not in mapped flooding; Limited storm, today's sea levels: Not loaded (file format unreadable) (NYC Stormwater Flood Maps, as of 2024-07-03) - **Basement:** No basement (PLUTO (tax lot data), as of 2026-08-24) ## Violations and complaints - **HPD violations:** 349 open: 349 about building conditions — walls, floors and stairs (86), pests (48), leaks (44), fire safety (37); 81 immediately hazardous (class C). Also 7 older records from 2008–2016 never closed. 25 further violations from 2026 were closed. 971 violations on record in all, 1988–2026 — the 627 most recent are listed here (Housing Maintenance Code Violations, as of 2026-10-23) - **DOB violations:** 9 open: 5 about building conditions, 4 about filings or paperwork (DOB Violations, as of 2026-10-23) - **Heat and hot water complaints:** 84 heat or hot water complaints (Housing Maintenance Code Complaints and Problems, as of 2026-10-24) - **Resident complaints to the city:** 131 heat or hot water, 35 plumbing, 24 leaks, 24 paint or plaster, 22 doors or windows, 12 pests, 11 electrical, 9 floors or stairs, 8 general repairs, 8 mold, 7 appliances, 5 safety, 5 unsanitary conditions, 1 elevators (Housing Maintenance Code Complaints and Problems, as of 2026-10-24) ## More systems - **Rent stabilization:** On the state's list of buildings with at least one rent-stabilized apartment (2024 registrations); listed for this tax lot (1 addresses), not under this building's address (Rent Stabilized Building Lists (2024 HCR registrations), as of 2025-11-30) - **Heat source:** Boiler burning No. 2 oil (Federal FST-175), registration current since Oct 2024 (Clean Air Tracking System (boiler registrations), as of 2026-10-24) - **Boiler work permits:** No boiler work permits on record (DOB Permit Issuance (BIS), as of 2026-10-23) - **Elevators:** 2 active elevators; latest periodic inspection Mar 2026 (DOB NOW Elevator Safety Compliance, as of 2026-10-23) - **Gas piping:** No open gas piping filing violations. Inspection results themselves are not published (DOB Safety Violations, as of 2026-10-23) - **Energy:** ENERGY STAR score 58 (2024 report) (Energy and Water Data Disclosure (Local Law 84), as of 2025-11-25) ## Permits and work - **Permit history:** 4 permits since 1990 (DOB NOW: Build – Approved Permits, as of 2026-10-23) - **Sales:** Ownership transferred Dec 2023, no sale price (NYC Citywide Annualized Calendar Sales, as of 2026-06-09) - **Sidewalk shed and scaffolding:** No active shed permit; permits since Mar 2021, last expired Mar 2022 (DOB NOW: Build – Approved Permits, as of 2026-10-23) - **Landmark status:** Not in a historic district on record (PLUTO (tax lot data), as of 2026-08-24) ## By apartment 50 of 108 apartments named in a city record: - Apt 1AA: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/1aa - Apt 1B: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/1b - Apt 1D: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/1d - Apt 1DD: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/1dd - Apt 1F: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/1f - Apt 1G: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/1g - Apt 1J: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/1j - Apt 2B: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/2b - Apt 2BB: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/2bb - Apt 2E: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/2e - Apt 2F: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/2f - Apt 2H: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/2h - Apt 2HH: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/2hh - Apt 2J: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/2j - Apt 3AA: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/3aa - Apt 3B: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/3b - Apt 3D: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/3d - Apt 3F: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/3f - Apt 3H: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/3h - Apt 3HH: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/3hh - Apt 3J: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/3j - Apt 3K: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/3k - Apt 4C: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/4c - Apt 4CC: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/4cc - Apt 4EE: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/4ee - Apt 4F: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/4f - Apt 4FF: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/4ff - Apt 4G: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/4g - Apt 4H: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/4h - Apt 4HH: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/4hh - Apt 4J: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/4j - Apt 5BB: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/5bb - Apt 5CC: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/5cc - Apt 5DD: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/5dd - Apt 5E: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/5e - Apt 5EE: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/5ee - Apt 5G: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/5g - Apt 5GG: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/5gg - Apt 5J: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/5j - Apt 6A: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/6a - Apt 6AA: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/6aa - Apt 6C: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/6c - Apt 6CC: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/6cc - Apt 6DD: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/6dd - Apt 6F: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/6f - Apt 6HH: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/6hh - Apt 6J: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/6j - Apt 6JJ: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/6jj - Apt AA: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/aa - Apt C6: https://blueflo.tech/b/4200-avenue-k-brooklyn/unit/c6 ## Registered with the city - DIAMOND MANAGEMENT (Agent, Registration Contacts) - 4200 AVENUE K EQUITIES LLC (CorporateOwner, Registration Contacts) - KF 4200 AVENUE K EQUITIES, LLC (TaxLotOwner, PLUTO (tax lot data)) ## More - Every record behind this card: https://blueflo.tech/b/4200-avenue-k-brooklyn/records - The same card as JSON: https://blueflo.tech/v1/buildings/4200-avenue-k-brooklyn - Ask about any building from an assistant (MCP): https://blueflo.tech/mcp - Report something wrong: https://blueflo.tech/dispute?slug=4200-avenue-k-brooklyn - How to use this data: https://blueflo.tech/llms.txt