Building record from city data · BROOKLYN, NY

405 Troy Ave

Printed 2026-10-21 from blueflo.tech/b/405-troy-avenue-brooklyn, where it is kept current. These are city records, not an inspection by Blueflo. Every item shows its source and the date it was last checked. Not a warranty. May not be used for tenant screening (terms of use).

Also known as 409 Troy Ave, 411 Troy Ave, 415 Troy Ave, 840 Montgomery St — one building, several doors.

built 1925 · 4 stories · 38 apartments · BIN 3038371 · BBL 3014230007

Worth knowing
1 open immediately hazardous (class C) HPD violation about walls, floors and stairs
Source: Housing Maintenance Code Violations · as of 2026-10-19
Worth knowing
Also on record
Clean in the records
Registered with the city

MONTGOMERY 840 LLC

Heat or hot water: 11 reports to the city since 2024
2024Heat or hot water · Mar 2024 · 3 reports (3 complaints)Mar 8, 2024Mar 22, 2024Mar 31, 2024Heat or hot water · Nov 2024 · 2 reports (2 complaints)Nov 3, 2024Nov 17, 2024
2025Heat or hot water · Mar 2025 · 1 report (1 complaint)Mar 27, 2025Heat or hot water · Oct 2025 · 2 reports (3 complaints)Oct 9, 2025Oct 17, 2025Oct 23, 2025Heat or hot water · Nov 2025 · 1 report (1 complaint)Nov 3, 2025
2026Heat or hot water · Sep 2026 · 1 report (4 complaints)Sep 24, 2026Sep 25, 2026Sep 25, 2026 (2nd)Sep 25, 2026 (3rd)Heat or hot water · Oct 2026 · 1 report (1 complaint)Oct 12, 2026
Source: HPD Complaints and Problems · as of 2026-10-21

Also reported

2024 – 2026

A filled month had a report to HPD; darker means more than one, and the past year is brightest. Tap one to read it. Complaints within a week count as one report. Records list complaints filed, not conditions found.

Apartments named in these records

19 of this building’s 38 apartments are named in a city record. The rest have no record naming them, which is the usual case.

These are city records about an apartment, not about anyone who lives or lived there. They may not be used to screen a tenant.

Structure and facade

Issues on record

Heat and hot water

12 complaints, 2024–2026 · 7 in the past year
Heat source

Boiler burning No. 2 oil (Rockmills MP-60), registration current since Jan 2025

Clean Air Tracking System (boiler registrations), as of 2026-10-20 · See this building's boiler registrations on NYC Open Data →
Boiler inspection filings

Latest accepted inspection Aug 2026, defects reported: no

DOB NOW: Safety Boiler, as of 2026-10-19 · See the boiler filings at DOB →
What this counts

Accepted annual boiler inspection filings, any date

Heat and hot water complaints

4 heat or hot water complaints

Housing Maintenance Code Complaints and Problems, as of 2026-10-20 · See the complaints at HPD Online →
What this counts

HPD complaints, heat season 2025–26 (Oct 1–May 31)

  • Boiler work permitsno recordNo boiler work permits on record

Water and pipes

Issues on record · 2 complaints, 2025–2026
Water service lineWhole tax lot

Unknown - Lead Status Unknown (records)

Lead Service Line Location Coordinates, as of 2026-01-30

Pests and cleanliness

7 complaints, 2025–2026 · 4 in the past year

Fire and safety

Older records on file

Electrical

Older records on file

Flooding

No issues on record
FEMA flood zone

Outside FEMA's 1% annual-chance flood zone: X

FEMA National Flood Hazard Layer, as of 2026-10-20
What this counts

Effective FIRM zones touching the building footprint

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
What this counts

Mapped ponding touching the building footprint

BasementWhole tax lot

Below grade

PLUTO (tax lot data), as of 2026-08-24

Rent and tenancy

On the state list
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
What this counts

The list doesn't say which apartments are stabilized, and being listed isn't proof of current status. For a specific apartment, request its rent history from HCR

Energy

Energy

ENERGY STAR score 3 (2024 report)

Energy and Water Data Disclosure (Local Law 84), as of 2025-11-25
What this counts

Letter grades are issued by the city under Local Law 33 and posted near the building entrance; Blueflo shows the reported score only

General condition and all records

HPD violations

9 open: 5 about building conditions — other conditions (3), fire safety (1), walls, floors and stairs (1); 1 immediately hazardous (class C), 4 about paperwork or notices. Also 2 older records from 1991 never closed. 25 further violations from 2023–2025 were closed. 156 violations on record in all, 1991–2026 — the 44 most recent are listed here

2026 Sep
Other conditions class A
2026 Sep
Other conditions class A
2025 Nov
Walls, floors and stairs class C
2025 Oct
Fire safety class B · closed
2025 Oct
Fire safety class B · closed
2025 Oct
Fire safety class B · closed
2025 Oct
Fire safety class B · closed
2025 Oct
Fire safety class B · closed
Show 28 more
2025 Sep
Rubbish and cleanliness class A · closed
2024 Nov
Heat or hot waterApt 10A class C · closed
2024 Oct
Lead-based paintApt 17B class B · paperwork
2024 Oct
Lead-based paintApt 1C class B · paperwork · closed
2024 Oct
Lead-based paintApt 16B class B · paperwork · closed
2024 Oct
Lead-based paintApt 8B class B · paperwork · closed
2024 Aug
Lead-based paintApt 3A class C · paperwork
2024 Aug
Lead-based paintApt 3A class C · paperwork
2024 Mar
Rubbish and cleanliness class B · closed
2024 Mar
Other conditions class B · closed
2023 Nov
Heat or hot water class C · paperwork · closed
2023 Nov
Heat or hot waterApt C9 class C · closed
2023 Nov
Heat or hot waterApt C9 class C · closed
2023 Nov
Doors and windowsApt 5C class A · closed
2023 Nov
Walls, floors and stairsApt 5C class A · closed
2023 Nov
Doors and windowsApt 5C class A · closed
2023 Nov
Lead-based paintApt 5C class C · paperwork · closed
2023 Nov
Lead-based paintApt 5C class C · closed
2023 Nov
Lead-based paintApt 5C class C · closed
2023 Nov
Lead-based paintApt 5C class C · closed
2023 Nov
Lead-based paintApt 5C class C · closed
2023 Nov
Lead-based paintApt 5C class C · closed
2023 Nov
Lead-based paintApt 5C class C · closed
2023 Oct
Other conditions class B
2022 Feb
Lead-based paintApt B14 class C · paperwork
2020 Jan
Fire safety class B
1991 May
Fire safetyApt 7B class B · never closed
1991 May
Smoke or CO detectorsApt 7B class B · never closed
Housing Maintenance Code Violations, as of 2026-10-19 · Read these violations in full at HPD Online →
What this counts

Open HPD violations inspected in the last 10 years; class C = immediately hazardous. Paperwork = failure to file, notify or certify

DOB violations

4 open: 2 about building conditions, 2 about filings or paperwork

DOB Violations, as of 2026-10-19 · Read these violations in full at DOB →
What this counts

Open DOB, ECB and DOB NOW Safety violations, any date, one per violation. ECB class 1 = hazardous, class 2 = major

Permit history

6 permits since 1990

DOB NOW: Build – Approved Permits, as of 2026-10-19 · See every permit at DOB →
What this counts

DOB permits issued (DOB NOW and legacy BIS), one per job and work type; excludes sheds

Nothing on record

Gasno record
  • Gas pipingno recordNo open gas piping filing violations. Inspection results themselves are not published
ElevatorsNot applicable
  • Elevatorsnot requiredNo elevators registered to this building

Sources

23 datasets

Each date is when we last checked that dataset, not when the record itself was created.