657 Mac Donough St — building record — Blueflo

Building record from city data · BROOKLYN, NY

Printed 2026-10-21 from blueflo.tech/b/657-mac-donough-street-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).

built 1905 · 3 stories · 6 apartments · BIN 3040188 · BBL 3014970071

Worth knowing

City stormwater map shows deep flooding (1 ft+) at this building in a moderate storm today

Source: NYC Stormwater Flood Maps · as of 2024-07-03

Worth knowing

City stormwater map shows deep flooding (1 ft+) at this building in a moderate storm today

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)
Outside FEMA's 1% annual-chance flood zone
No heat or hot water complaints filed last winter

Registered with the city

MACDONOUGH REALTY NY LLC

Worth knowing

City stormwater map shows deep flooding (1 ft+) at this building in a moderate storm today

Source: NYC Stormwater Flood Maps · as of 2024-07-03

Apartments named in these records

Apt 1R 11 Apt 2L 3 Apt 3R 1

3 of this building’s 6 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.

Heat and hot water

Issues on record

What has happened here

Low Pressure Boiler DOB violation

Low Pressure Boiler DOB violation

Low Pressure Boiler DOB violation

Low Pressure Boiler DOB violation

Low Pressure Boiler DOB violation

Low Pressure Boiler DOB violation

Show 11 more

Low Pressure Boiler DOB violation

Low Pressure Boiler DOB violation

Low Pressure Boiler DOB violation

Low Pressure Boiler DOB violation

Low Pressure Boiler never closed · DOB violation

Low Pressure Boiler never closed · DOB violation

Low Pressure Boiler never closed · DOB violation

Low Pressure Boiler never closed · DOB violation

Local Law 62/91 - Boilers never closed · DOB violation

Boilers hazardous · never closed · DOB violation

Local Law 62/91 - Boilers never closed · DOB violation

Heat sourceno recordNo boiler registration or district steam on record
Boiler inspection filingsnot requiredNot required: residential buildings with 6 or fewer units are exempt from annual filings
Boiler work permitsno recordNo boiler work permits on record
Heat and hot water complaintsfound0 heat or hot water complaints

Flooding

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: Deep and contiguous flooding (1 ft+); Moderate storm, 2050 sea levels: Deep and contiguous flooding (1 ft+); Moderate storm, today's sea levels: Deep and contiguous flooding (1 ft+); 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

Basementno recordUnknown

Water and pipes

Older records on file

What has happened here

Leaks class A · HPD violation

PlumbingApt 1R class B · never closed · HPD violation

LeaksApt 1R class B · never closed · HPD violation

Leaks class B · never closed · HPD violation

Water service line

Non-Lead (field inspection)

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

Pests and cleanliness

1 resolved in 2024

What has happened here

Pests class A · paperwork · closed · HPD violation

Fire and safety

Older records on file

What has happened here

Fire safetyApt 1R class B · never closed · HPD violation

Fire safety class B · never closed · HPD violation

Fire safetyApt 1R class B · never closed · HPD violation

Electrical

Older records on file

What has happened here

Electrical class B · HPD violation

Structure and facade

Older records on file

What has happened here

Walls, floors and stairs class A · HPD violation

Walls, floors and stairsApt 1R class A · never closed · HPD violation

Walls, floors and stairsApt 1R class A · never closed · HPD violation

Walls, floors and stairs class A · never closed · HPD violation

Walls, floors and stairsApt 1R class B · never closed · HPD violation

Walls, floors and stairs class A · never closed · HPD violation

Show 3 more

Walls, floors and stairs class A · never closed · HPD violation

Walls, floors and stairsApt 2L class A · never closed · HPD violation

Walls, floors and stairsApt 3R class B · never closed · HPD violation

Facade ratingnot requiredNot required: facade inspections apply only to buildings taller than 6 stories
Sidewalk shed and scaffoldingno recordNo sidewalk shed permits on record
Landmark statusno recordNot in a historic district on record

General condition and all records

HPD violations

4 open: 4 about building conditions — electrical (1), leaks (1), other conditions (1), walls, floors and stairs (1). Also 21 older records from 2003–2016 never closed. 2 further violations from 2024–2025 were closed. 35 violations on record in all, 2003–2025 — the 27 most recent are listed here

Other conditions class I · paperwork · closed

Pests class A · paperwork · closed

Electrical class B

Other conditions class B

Walls, floors and stairs class A

Walls, floors and stairsApt 1R class A · never closed

Walls, floors and stairsApt 1R class A · never closed

Show 19 more

PlumbingApt 1R class B · never closed

Smoke or CO detectorsApt 1R class B · never closed

Smoke or CO detectorsApt 1R class B · never closed

Smoke or CO detectorsApt 1R class B · never closed

Walls, floors and stairs class A · never closed

Fire safetyApt 1R class B · never closed

Walls, floors and stairsApt 1R class B · never closed

Smoke or CO detectorsApt 1R class B · never closed

LeaksApt 1R class B · never closed

Walls, floors and stairs class A · never closed

Walls, floors and stairs class A · never closed

Fire safety class B · never closed

Leaks class B · never closed

Walls, floors and stairsApt 2L class A · never closed

Smoke or CO detectorsApt 2L class B · never closed

Smoke or CO detectorsApt 2L class B · never closed

Fire safetyApt 1R class B · never closed

Other conditions class B · never closed

Walls, floors and stairsApt 3R 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

17 open: 10 about building conditions, 2 about filings or paperwork, 5 older than 10 years

Low Pressure Boiler

Low Pressure Boiler

Low Pressure Boiler

Low Pressure Boiler

Low Pressure Boiler

Low Pressure Boiler

Low Pressure Boiler

Low Pressure Boiler

Show 9 more

Low Pressure Boiler

Low Pressure Boiler

Low Pressure Boiler never closed

Low Pressure Boiler never closed

Low Pressure Boiler never closed

Low Pressure Boiler never closed

Local Law 62/91 - Boilers never closed

Boilers hazardous · never closed

Local Law 62/91 - Boilers never closed

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

Everything else on record

Other conditions class I · paperwork · closed · HPD violation

Other conditions class B · HPD violation

Smoke or CO detectorsApt 1R class B · never closed · HPD violation

Smoke or CO detectorsApt 1R class B · never closed · HPD violation

Smoke or CO detectorsApt 1R class B · never closed · HPD violation

Smoke or CO detectorsApt 1R class B · never closed · HPD violation

Show 3 more

Smoke or CO detectorsApt 2L class B · never closed · HPD violation

Smoke or CO detectorsApt 2L class B · never closed · HPD violation

Other conditions class B · never closed · HPD violation

Resident complaints to the cityfoundno complaints
Permit historyno record0 permits since 1990

Nothing on record

Rent and tenancyNot on the state list

Rent stabilizationno recordNot on the state's 2024 list. Owners who register late or not at all are missing, so ask HCR about a specific apartment

Gasno record

Gas pipingno recordNo open gas piping filing violations. Inspection results themselves are not published

Energyno record

Energynot requiredNot required: energy reporting applies to buildings over 25,000 sq ft

ElevatorsNot applicable

Elevatorsnot requiredNo elevators registered to this building

Sources

23 datasets

FEMA

FEMA National Flood Hazard Layer2026-10-20
OpenFEMA NFIP Redacted Claims (v3)2026-09-09

NYC DCP

NYC GeoSearch (address directory)2026-10-20
PLUTO (tax lot data)2026-08-24

NYC DEP

Clean Air Tracking System (boiler registrations)2026-10-20
Lead Service Line Location Coordinates2026-01-30

NYC DEP / Mayor's Office

NYC Stormwater Flood Maps2024-07-03

NYC DOB

DOB NOW Elevator Safety Compliance2026-10-19
DOB NOW: Build – Approved Permits2026-10-19
DOB NOW: Safety Boiler2026-10-19
DOB NOW: Safety – Facades Compliance Filings2026-10-19
DOB Permit Issuance (BIS)2026-10-19
DOB Safety Violations2026-10-19
DOB Violations2026-10-19

NYC DOB / Mayor's Office

Energy and Water Data Disclosure (Local Law 84)2025-11-25

NYC HPD

Buildings Subject to HPD Jurisdiction2026-08-12
Housing Maintenance Code Complaints and Problems2026-10-20
Housing Maintenance Code Violations2026-10-19
Multiple Dwelling Registrations2026-08-12
Registration Contacts2026-08-12

NYC OTI

AddressPoint2026-07-07
Building Footprints2026-10-19

NYC Rent Guidelines Board / NYS HCR

Rent Stabilized Building Lists (2024 HCR registrations)2025-11-30

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