# 509 3 Ave, Manhattan

What New York City's public records say about this building. Page: https://blueflo.tech/b/509-3-avenue-manhattan

> These are city records, not an inspection by Blueflo. Every item shows its source and the date it was last checked.

## In one line

Checked in city records: non-lead water line, boiler filing with no defects (Dec 2025), outside FEMA flood zones and stormwater maps (DOB NOW: Safety Boiler, FEMA National Flood Hazard Layer, Lead Service Line Location Coordinates, as of 2026-01-30)

## The building

- **Year built:** 2021 (PLUTO (tax lot data), as of 2026-08-24)
- **Stories:** 35 (Buildings Subject to HPD Jurisdiction, as of 2026-08-12)
- **Homes:** 229 (Buildings Subject to HPD Jurisdiction, as of 2026-08-12)

## Clean in the records

- Water service line on record as non-lead (excavation) (Lead Service Line Location Coordinates, as of 2026-01-30)
- Boiler inspection filed Dec 2025 with no defects reported (DOB NOW: Safety Boiler, as of 2026-10-17)
- Outside FEMA's 1% annual-chance flood zone; no mapped stormwater flooding (FEMA National Flood Hazard Layer, as of 2026-10-19)
- No open HPD violations about building conditions from the last 10 years (Housing Maintenance Code Violations, as of 2026-10-19)

## Building systems

- **Boiler inspection filings:** Latest accepted inspection Dec 2025, defects reported: no (DOB NOW: Safety Boiler, as of 2026-10-17)
- **Facade rating:** No facade filing found for this building (DOB NOW: Safety – Facades Compliance Filings, as of 2026-10-18)
- **Water service line:** Non-Lead (excavation) (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 2026-10-19)
- **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:** 0 open. 6 further violations from 2026 were closed (Housing Maintenance Code Violations, as of 2026-10-19)
- **DOB violations:** 1 open: 1 about filings or paperwork (DOB Violations, as of 2026-10-18)
- **Heat and hot water complaints:** 2 heat or hot water complaints (Housing Maintenance Code Complaints and Problems, as of 2026-10-19)
- **Resident complaints to the city:** 3 heat or hot water, 1 leaks, 1 mold, 1 paint or plaster, 1 plumbing (Housing Maintenance Code Complaints and Problems, as of 2026-10-19)

## 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. Listed under the 421-a tax program, so stabilization can end when the exemption does (Rent Stabilized Building Lists (2024 HCR registrations), as of 2025-11-30)
- **Heat source:** Boiler burning natural gas (Generac SG130), registration current since Nov 2025 (Clean Air Tracking System (boiler registrations), as of 2026-10-19)
- **Boiler work permits:** Latest boiler work permit 2023 (5 on record) (DOB Permit Issuance (BIS), as of 2026-10-19)
- **Elevators:** 4 active elevators; latest periodic inspection Aug 2025 (DOB NOW Elevator Safety Compliance, as of 2026-10-18)
- **Gas piping:** No open gas piping filing violations. Inspection results themselves are not published (DOB Safety Violations, as of 2026-10-18)
- **Energy:** ENERGY STAR score 100 (2024 report) (Energy and Water Data Disclosure (Local Law 84), as of 2025-11-25)

## Permits and work

- **Permit history:** 79 permits since 1990 (DOB NOW: Build – Approved Permits, as of 2026-10-17)
- **Sidewalk shed and scaffolding:** No active shed permit; permits since May 2020, last expired May 2024 (DOB NOW: Build – Approved Permits, as of 2026-10-17)
- **Landmark status:** Not in a historic district on record (PLUTO (tax lot data), as of 2026-08-24)

## By apartment

6 of 229 apartments named in a city record:

- Apt 11A: https://blueflo.tech/b/509-3-avenue-manhattan/unit/11a
- Apt 17A: https://blueflo.tech/b/509-3-avenue-manhattan/unit/17a
- Apt 19C: https://blueflo.tech/b/509-3-avenue-manhattan/unit/19c
- Apt 21A: https://blueflo.tech/b/509-3-avenue-manhattan/unit/21a
- Apt 25B: https://blueflo.tech/b/509-3-avenue-manhattan/unit/25b
- Apt 28C: https://blueflo.tech/b/509-3-avenue-manhattan/unit/28c

## Registered with the city

- THIRD AND THIRTY FOUR LLC (CorporateOwner, Registration Contacts)
- THIRD AND THIRTY FOUR LLC (TaxLotOwner, PLUTO (tax lot data))

## More

- Every record behind this card: https://blueflo.tech/b/509-3-avenue-manhattan/records
- The same card as JSON: https://blueflo.tech/v1/buildings/509-3-avenue-manhattan
- Ask about any building from an assistant (MCP): https://blueflo.tech/mcp
- Report something wrong: https://blueflo.tech/dispute?slug=509-3-avenue-manhattan
- How to use this data: https://blueflo.tech/llms.txt