# 305 Martense St, Brooklyn What New York City's public records say about this building. Page: https://blueflo.tech/b/305-martense-street-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 31 open immediately hazardous (class C) HPD violations about pests and fire safety and heat or hot water and electrical and lead-based paint and walls, floors and stairs and leaks and mold and rubbish and cleanliness (Housing Maintenance Code Violations, as of 2026-10-24) ## The building - **Year built:** 1925 (PLUTO (tax lot data), as of 2026-08-24) - **Stories:** 4 (Buildings Subject to HPD Jurisdiction, as of 2026-08-12) - **Homes:** 28 (Buildings Subject to HPD Jurisdiction, as of 2026-08-12) ## Worth knowing - 31 open immediately hazardous (class C) HPD violations about pests and fire safety and heat or hot water and electrical and lead-based paint and walls, floors and stairs and leaks and mold and rubbish and cleanliness - 322 heat or hot water complaints filed with the city last winter - 79 open HPD violations about building conditions ## Also on record - On the state's list of buildings with rent-stabilized apartments (2024 registrations) ## Clean in the records - Water service line on record as non-lead (records) (Lead Service Line Location Coordinates, as of 2026-01-30) - Boiler inspection filed Jul 2026 with no defects reported (DOB NOW: Safety Boiler, as of 2026-10-24) - Outside FEMA's 1% annual-chance flood zone; no mapped stormwater flooding (FEMA National Flood Hazard Layer, as of 2026-10-25) ## Building systems - **Boiler inspection filings:** Latest accepted inspection Jul 2026, defects reported: no (DOB NOW: Safety Boiler, as of 2026-10-24) - **Facade rating:** Not required: facade inspections apply only to buildings taller than 6 stories (DOB NOW: Safety – Facades Compliance Filings, as of 2026-10-24) - **Water service line:** Non-Lead (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 2026-10-25) - **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:** 79 open: 79 about building conditions — walls, floors and stairs (22), pests (14), doors and windows (7), rubbish and cleanliness (7); 31 immediately hazardous (class C). 25 further violations from 2025–2026 were closed. 737 violations on record in all, 1990–2026 — the 149 most recent are listed here (Housing Maintenance Code Violations, as of 2026-10-24) - **DOB violations:** 0 open (DOB Violations, as of 2026-10-24) - **Heat and hot water complaints:** 322 heat or hot water complaints (Housing Maintenance Code Complaints and Problems, as of 2026-10-25) - **Resident complaints to the city:** 157 heat or hot water, 17 electrical, 10 paint or plaster, 9 plumbing, 6 unsanitary conditions, 5 appliances, 5 floors or stairs, 5 general repairs, 5 mold, 2 doors or windows, 2 leaks, 2 safety (Housing Maintenance Code Complaints and Problems, as of 2026-10-25) ## More systems - **Rent stabilization:** On the state's list of buildings with at least one rent-stabilized apartment (2024 registrations) (Rent Stabilized Building Lists (2024 HCR registrations), as of 2025-11-30) - **Heat source:** Boiler burning natural gas (Rockmills MP-50), registration current since Nov 2023 (Clean Air Tracking System (boiler registrations), as of 2026-10-25) - **Boiler work permits:** No boiler work permits on record (DOB Permit Issuance (BIS), as of 2026-10-24) - **Elevators:** No elevators registered to this building (DOB NOW Elevator Safety Compliance, as of 2026-10-24) - **Gas piping:** No open gas piping filing violations. Inspection results themselves are not published (DOB Safety Violations, as of 2026-10-24) - **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:** 1 permits since 1990 (DOB NOW: Build – Approved Permits, as of 2026-10-24) - **Sales:** Last sold Apr 2024 for $5,163,750; 1 apartment sale since 2016 (NYC Citywide Annualized Calendar Sales, as of 2026-06-09) - **Sidewalk shed and scaffolding:** No sidewalk shed permits on record (DOB NOW: Build – Approved Permits, as of 2026-10-24) - **Landmark status:** Not in a historic district on record (PLUTO (tax lot data), as of 2026-08-24) ## By apartment 20 of 28 apartments named in a city record: - Apt 1A: https://blueflo.tech/b/305-martense-street-brooklyn/unit/1a - Apt 1B: https://blueflo.tech/b/305-martense-street-brooklyn/unit/1b - Apt 1E: https://blueflo.tech/b/305-martense-street-brooklyn/unit/1e - Apt 1F: https://blueflo.tech/b/305-martense-street-brooklyn/unit/1f - Apt 2A: https://blueflo.tech/b/305-martense-street-brooklyn/unit/2a - Apt 2B: https://blueflo.tech/b/305-martense-street-brooklyn/unit/2b - Apt 2C: https://blueflo.tech/b/305-martense-street-brooklyn/unit/2c - Apt 2D: https://blueflo.tech/b/305-martense-street-brooklyn/unit/2d - Apt 2G: https://blueflo.tech/b/305-martense-street-brooklyn/unit/2g - Apt 3B: https://blueflo.tech/b/305-martense-street-brooklyn/unit/3b - Apt 3C: https://blueflo.tech/b/305-martense-street-brooklyn/unit/3c - Apt 3E: https://blueflo.tech/b/305-martense-street-brooklyn/unit/3e - Apt 3F: https://blueflo.tech/b/305-martense-street-brooklyn/unit/3f - Apt 4A: https://blueflo.tech/b/305-martense-street-brooklyn/unit/4a - Apt 4B: https://blueflo.tech/b/305-martense-street-brooklyn/unit/4b - Apt 4C: https://blueflo.tech/b/305-martense-street-brooklyn/unit/4c - Apt 4D: https://blueflo.tech/b/305-martense-street-brooklyn/unit/4d - Apt 4E: https://blueflo.tech/b/305-martense-street-brooklyn/unit/4e - Apt 4F: https://blueflo.tech/b/305-martense-street-brooklyn/unit/4f - Apt 4G: https://blueflo.tech/b/305-martense-street-brooklyn/unit/4g ## Registered with the city - Individual agent (name not shown) (Agent, Registration Contacts) - 305 MARTENSE REALTY LLC (CorporateOwner, Registration Contacts) - MARTENSE REALTY LLC (TaxLotOwner, PLUTO (tax lot data)) ## More - Every record behind this card: https://blueflo.tech/b/305-martense-street-brooklyn/records - The same card as JSON: https://blueflo.tech/v1/buildings/305-martense-street-brooklyn - Ask about any building from an assistant (MCP): https://blueflo.tech/mcp - Report something wrong: https://blueflo.tech/dispute?slug=305-martense-street-brooklyn - How to use this data: https://blueflo.tech/llms.txt