# 400 St Marks Ave, Brooklyn What New York City's public records say about this building. Page: https://blueflo.tech/b/400-street-marks-avenue-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 16 open immediately hazardous (class C) HPD violations about pests and fire safety and heat or hot water and leaks and walls, floors and stairs (Housing Maintenance Code Violations, as of 2026-10-19) ## The building - **Year built:** 1931 (PLUTO (tax lot data), as of 2026-08-24) - **Stories:** 4 (Buildings Subject to HPD Jurisdiction, as of 2026-08-12) - **Homes:** 12 (Buildings Subject to HPD Jurisdiction, as of 2026-08-12) ## Worth knowing - 16 open immediately hazardous (class C) HPD violations about pests and fire safety and heat or hot water and leaks and walls, floors and stairs - City records list the water service line's material as unknown (lead not ruled out) - 69 open HPD violations about building conditions ## Clean in the records - Outside FEMA's 1% annual-chance flood zone; no mapped stormwater flooding (FEMA National Flood Hazard Layer, as of 2026-10-20) ## Building systems - **Boiler inspection filings:** No boiler filings under this building's ID (DOB NOW: Safety Boiler, as of 2026-10-19) - **Facade rating:** Not required: facade inspections apply only to buildings taller than 6 stories (DOB NOW: Safety – Facades Compliance Filings, as of 2026-10-19) - **Water service line:** Unknown - Lead Status Unknown (records) (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 2026-10-20) - **Stormwater flooding:** Extreme storm, 2080 sea levels: Not in mapped flooding; 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:** Below grade (PLUTO (tax lot data), as of 2026-08-24) ## Violations and complaints - **HPD violations:** 69 open: 69 about building conditions — walls, floors and stairs (23), doors and windows (10), pests (10), leaks (8); 16 immediately hazardous (class C). Also 2 older records from 2011 never closed. 25 further violations from 2025–2026 were closed. 230 violations on record in all, 2011–2026 — the 197 most recent are listed here (Housing Maintenance Code Violations, as of 2026-10-19) - **DOB violations:** 1 open: 1 about filings or paperwork (DOB Violations, as of 2026-10-19) - **Heat and hot water complaints:** 2 heat or hot water complaints (Housing Maintenance Code Complaints and Problems, as of 2026-10-20) - **Resident complaints to the city:** 8 plumbing, 7 pests, 5 doors or windows, 5 safety, 4 electrical, 4 paint or plaster, 3 floors or stairs, 3 heat or hot water, 3 mold, 2 general repairs, 2 leaks, 1 unsanitary conditions (Housing Maintenance Code Complaints and Problems, as of 2026-10-20) ## 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:** No boiler registration or district steam on record (Clean Air Tracking System (boiler registrations), as of 2026-10-20) - **Boiler work permits:** No boiler work permits on record (DOB Permit Issuance (BIS), as of 2026-10-19) - **Elevators:** No elevators registered to this building (DOB NOW Elevator Safety Compliance, as of 2026-10-19) - **Gas piping:** No open gas piping filing violations. Inspection results themselves are not published (DOB Safety Violations, as of 2026-10-19) - **Energy:** Not required: energy reporting applies to buildings over 25,000 sq ft (Energy and Water Data Disclosure (Local Law 84), as of 2025-11-25) ## Permits and work - **Permit history:** 0 permits since 1990 (DOB NOW: Build – Approved Permits, as of 2026-10-19) - **Sidewalk shed and scaffolding:** No sidewalk shed permits on record (DOB NOW: Build – Approved Permits, as of 2026-10-19) - **Landmark status:** Not in a historic district on record (PLUTO (tax lot data), as of 2026-08-24) ## By apartment 11 of 12 apartments named in a city record: - Apt 1: https://blueflo.tech/b/400-street-marks-avenue-brooklyn/unit/1 - Apt 1A: https://blueflo.tech/b/400-street-marks-avenue-brooklyn/unit/1a - Apt 1B: https://blueflo.tech/b/400-street-marks-avenue-brooklyn/unit/1b - Apt 1C: https://blueflo.tech/b/400-street-marks-avenue-brooklyn/unit/1c - Apt 2: https://blueflo.tech/b/400-street-marks-avenue-brooklyn/unit/2 - Apt 2A: https://blueflo.tech/b/400-street-marks-avenue-brooklyn/unit/2a - Apt 2B: https://blueflo.tech/b/400-street-marks-avenue-brooklyn/unit/2b - Apt 2C: https://blueflo.tech/b/400-street-marks-avenue-brooklyn/unit/2c - Apt 3C: https://blueflo.tech/b/400-street-marks-avenue-brooklyn/unit/3c - Apt 4B: https://blueflo.tech/b/400-street-marks-avenue-brooklyn/unit/4b - Apt 4C: https://blueflo.tech/b/400-street-marks-avenue-brooklyn/unit/4c ## Registered with the city - MHR MANAGEMENT (Agent, Registration Contacts) - CROWN PROSPECT HOUSES HDFc (CorporateOwner, Registration Contacts) - CROWN PROSPECT ASSOCIATES LIMITED PARTNE RSHIP (TaxLotOwner, PLUTO (tax lot data)) ## More - Every record behind this card: https://blueflo.tech/b/400-street-marks-avenue-brooklyn/records - The same card as JSON: https://blueflo.tech/v1/buildings/400-street-marks-avenue-brooklyn - Ask about any building from an assistant (MCP): https://blueflo.tech/mcp - Report something wrong: https://blueflo.tech/dispute?slug=400-street-marks-avenue-brooklyn - How to use this data: https://blueflo.tech/llms.txt