Building health · BROOKLYN, NY
built 1931 · 4 stories · 8 apartments
Also known as 818 Hart St, 820 Hart St — one building, several doors.
Registered with the city: DALAN MANAGEMENT · 40 other buildings here list it; 313 KNICKERBOCKER LLC; 313 KNICKERBOCKER, LLC
Last sold Nov 2025 for $2,675,000 · NYC Department of Finance
Apartments named in these records
Flooding
Issues on recordFEMA flood zone
Outside FEMA's 1% annual-chance flood zone: X
FEMA National Flood Hazard Layer, as of 2026-10-21
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
- BasementfoundNo basement
Heat and hot water
3 complaints, 2025–2026 · 2 in the past yearWhat has happened here
Heat source
Boiler burning No. 2 oil (Weil Mclain Bl-580 WEIL MCLAIN BL-580), registration expired since Nov 2005
Clean Air Tracking System (boiler registrations), as of 2026-10-21 · See this building's boiler registrations on NYC Open Data →
Boiler inspection filings
Latest accepted inspection Aug 2018, defects reported: no
DOB NOW: Safety Boiler, as of 2026-10-20 · See the boiler filings at DOB →
What this counts
Accepted annual boiler inspection filings, any date
Boiler work permits
Latest boiler work permit 2017 (3 on record)
DOB Permit Issuance (BIS), as of 2026-10-20
What this counts
DOB boiler permits (BIS and DOB NOW); a permit dates work, not the boiler's age
Heat and hot water complaints
3 heat or hot water complaints
Housing Maintenance Code Complaints and Problems, as of 2026-10-21 · See the complaints at HPD Online →
What this counts
HPD complaints, heat season 2025–26 (Oct 1–May 31)
Water and pipes
Issues on record · 2 complaints, 2025What has happened here
Water service line
Lead (field inspection)
Lead Service Line Location Coordinates, as of 2026-01-30
Pests and cleanliness
Issues on record (2025) · 7 complaints, 2025 · 5 in the past yearWhat has happened here
2025 Nov
PestsApt 6 complaint
2025 Nov
PestsApt 3 complaint
2025 Nov
PestsApt 2 complaint
2025 Nov
PestsApt 1 complaint
2025 Nov
MoldApt 3 class B · closed · HPD violation
2025 Nov
PestsApt 3 class C · closed · HPD violation
Show 18 more
2025 Nov
PestsApt 3 class C · closed · HPD violation
2025 Nov
MoldApt 3 class A · closed · HPD violation
2025 Nov
MoldApt 3 complaint
2025 Oct
PestsApt 6 complaint
2025 Oct
PestsApt 3 class C · closed · HPD violation
2025 Oct
Mold, pestsApt 3 complaint
2025 Jun
PestsApt 2 class C · HPD violation
2025 May
PestsApt 2 class C · HPD violation
2024 Aug
PestsApt 5 complaint
2024 Jul
MoldApt 1 complaint
2024 Jul
Mold, pestsApt 3 complaint
2024 Jul
MoldApt 1 complaint
2024 Jun
Unsanitary conditionsApt 2 complaint
2024 May
MoldApt 6 complaint
2024 Mar
Mold, pestsApt 6 complaint
2024 Mar
Mold, pestsApt 3 complaint
2023 Dec
PestsApt 5 class C · HPD violation
2023 Dec
PestsApt 5 complaint
Fire and safety
2 resolved since 2025Electrical
2 complaints, 2025Structure and facade
14 resolved since 2025What has happened here
2026 May
General construction permit
2025 Nov
Walls, floors and stairs class A · closed · HPD violation
2025 Nov
Walls, floors and stairs class A · closed · HPD violation
2025 Nov
Walls, floors and stairs class A · closed · HPD violation
2025 Nov
Walls, floors and stairs class A · closed · HPD violation
2025 Nov
Walls, floors and stairs class A · closed · HPD violation
Show 10 more
2025 Nov
Walls, floors and stairs class A · closed · HPD violation
2025 Nov
Walls, floors and stairsApt 3 class A · closed · HPD violation
2025 Nov
Walls, floors and stairsApt 3 class A · closed · HPD violation
2025 Nov
Walls, floors and stairsApt 3 class B · closed · HPD violation
2025 Nov
Walls, floors and stairsApt 3 class B · closed · HPD violation
2025 Oct
Walls, floors and stairsApt 3 class B · closed · HPD violation
2025 Oct
Walls, floors and stairsApt 3 class B · closed · HPD violation
2025 Oct
Walls, floors and stairsApt 3 class C · closed · HPD violation
2025 Oct
Walls, floors and stairsApt 3 class C · closed · HPD violation
2018 Jun
General construction permit
- Facade ratingnot requiredNot required: facade inspections apply only to buildings taller than 6 stories
- Sidewalk shed and scaffoldingfoundNo active shed permit
- Landmark statusno recordNot in a historic district on record
Rent and tenancy
On the state listRent 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
General condition and all records
HPD violations
3 open: 3 about building conditions — pests (3); 3 immediately hazardous (class C). 25 further violations from 2025 were closed. 471 violations on record in all, 2005–2025 — the 126 most recent are listed here
2025 Nov
Walls, floors and stairs class A · closed
2025 Nov
Fire safety class B · closed
2025 Nov
Walls, floors and stairs class A · closed
2025 Nov
Walls, floors and stairs class A · closed
2025 Nov
Walls, floors and stairs class A · closed
2025 Nov
Fire safety class B · closed
2025 Nov
Walls, floors and stairs class A · closed
2025 Nov
Walls, floors and stairs class A · closed
Show 20 more
2025 Nov
MoldApt 3 class B · closed
2025 Nov
Walls, floors and stairsApt 3 class A · closed
2025 Nov
Walls, floors and stairsApt 3 class A · closed
2025 Nov
Walls, floors and stairsApt 3 class B · closed
2025 Nov
Walls, floors and stairsApt 3 class B · closed
2025 Nov
PestsApt 3 class C · closed
2025 Nov
PestsApt 3 class C · closed
2025 Nov
MoldApt 3 class A · closed
2025 Oct
Walls, floors and stairsApt 3 class B · closed
2025 Oct
LeaksApt 3 class B · closed
2025 Oct
Other conditionsApt 3 class B · closed
2025 Oct
Walls, floors and stairsApt 3 class B · closed
2025 Oct
ElectricalApt 3 class B · closed
2025 Oct
Walls, floors and stairsApt 3 class C · closed
2025 Oct
PestsApt 3 class C · closed
2025 Oct
Other conditionsApt 3 class C · closed
2025 Oct
Walls, floors and stairsApt 3 class C · closed
2025 Jun
PestsApt 2 class C
2025 May
PestsApt 2 class C
2023 Dec
PestsApt 5 class C
Housing Maintenance Code Violations, as of 2026-10-20 · 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 filings or paperwork, 2 older than 10 years
2016 Oct
Unknown class - 2 · never closed
2016 Oct
Unknown class - 1 · never closed
1993 Aug
Local Law 62/91 - Boilers never closed
1993 Aug
Local Law 62/91 - Boilers never closed
DOB Violations, as of 2026-10-20 · 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
Resident complaints to the city
6 pests, 3 floors or stairs, 3 heat or hot water, 2 doors or windows, 2 electrical, 2 general repairs, 2 mold, 2 paint or plaster, 2 plumbing, 1 appliances
2026 Apr
Heat or hot waterApt 4R
2025 Dec
Heat or hot water
2025 Nov
PestsApt 6
2025 Nov
PestsApt 3
2025 Nov
PestsApt 2
2025 Nov
PestsApt 1
2025 Nov
Floors or stairsApt 3
2025 Nov
MoldApt 3
Show 28 more
2025 Nov
Paint or plasterApt 3
2025 Oct
ElectricalApt 6
2025 Oct
Electrical, heat or hot water, pestsApt 6
2025 Oct
Floors or stairs, paint or plaster, plumbing, mold, pestsApt 3
2025 May
General repairsApt 2
2025 May
Appliances, floors or stairsApt 2
2025 Mar
General repairsApt 5
2025 Mar
Doors or windows, plumbingApt 5
2024 Oct
Electrical, plumbing, leaksApt 2
2024 Aug
Floors or stairs, plumbing, pestsApt 5
2024 Jul
Paint or plaster, moldApt 1
2024 Jul
AppliancesApt 3
2024 Jul
Doors or windows, general repairsApt 3
2024 Jul
Electrical, paint or plaster, plumbing, leaksApt 3
2024 Jul
Appliances, doors or windows, floors or stairs, general repairs, paint or plaster, mold, pestsApt 3
2024 Jul
MoldApt 1
2024 Jul
ElectricalApt 3
2024 Jul
ElectricalApt 3
2024 Jun
Floors or stairs, unsanitary conditionsApt 2
2024 May
Floors or stairs, mold, leaksApt 6
2024 Mar
Floors or stairs, general repairs, plumbingApt 5
2024 Mar
Doors or windows, electrical, general repairs, outside the building
2024 Mar
Electrical, plumbing, safety, mold, pestsApt 6
2024 Mar
Mold, pestsApt 3
2023 Dec
Floors or stairs, heat or hot water, paint or plaster, pestsApt 5
2023 Nov
Appliances, doors or windows, floors or stairs, general repairs, paint or plasterApt 3
2023 Nov
Appliances, floors or stairs, general repairsApt 3
2023 Nov
Doors or windows, electrical, floors or stairs, heat or hot water, paint or plaster, leaksApt 6
Housing Maintenance Code Complaints and Problems, as of 2026-10-21 · See the complaints at HPD Online →
What this counts
HPD complaints received in the last 2 years; the list below is every complaint on record for the last three years
Permit history
18 permits since 1990
2026 Jun
Plumbing permit
2026 May
Mechanical systems permit, General construction permit
2018 Jul
Fire protection permit
2018 Jun
Plumbing permit, General construction permit
2018 Jun
Heating/ventilation permit, Fire protection permit
2017 Nov
Plumbing permit
2017 Nov
Plumbing permit
and 11 more at the source
DOB NOW: Build – Approved Permits, as of 2026-10-20 · See every permit at DOB →
What this counts
DOB permits issued (DOB NOW and legacy BIS), one per job and work type; excludes sheds
SalesWhole tax lot
Last sold Nov 2025 for $2,675,000
NYC Citywide Annualized Calendar Sales, as of 2026-06-09
What this counts
Department of Finance sales files, 2016 on
Everything else on record
2026 May
Mechanical systems permit
2025 Nov
Floors or stairsApt 3 complaint
2025 Nov
Paint or plasterApt 3 complaint
2025 Oct
Other conditionsApt 3 class B · closed · HPD violation
2025 Oct
Other conditionsApt 3 class C · closed · HPD violation
2025 Oct
Floors or stairs, paint or plasterApt 3 complaint
Show 21 more
2025 May
General repairsApt 2 complaint
2025 May
Appliances, floors or stairsApt 2 complaint
2025 Mar
General repairsApt 5 complaint
2025 Mar
Doors or windowsApt 5 complaint
2024 Aug
Floors or stairsApt 5 complaint
2024 Jul
Paint or plasterApt 1 complaint
2024 Jul
AppliancesApt 3 complaint
2024 Jul
Doors or windows, general repairsApt 3 complaint
2024 Jul
Paint or plasterApt 3 complaint
2024 Jul
Appliances, doors or windows, floors or stairs, general repairs, paint or plasterApt 3 complaint
2024 Jun
Floors or stairsApt 2 complaint
2024 May
Floors or stairsApt 6 complaint
2024 Mar
Floors or stairs, general repairsApt 5 complaint
2024 Mar
Doors or windows, general repairs, outside the building complaint
2024 Mar
SafetyApt 6 complaint
2023 Dec
Floors or stairs, paint or plasterApt 5 complaint
2023 Nov
Appliances, doors or windows, floors or stairs, general repairs, paint or plasterApt 3 complaint
2023 Nov
Appliances, floors or stairs, general repairsApt 3 complaint
2023 Nov
Doors or windows, floors or stairs, paint or plasterApt 6 complaint
2016 Oct
Unknown class - 2 · never closed · DOB violation
2016 Oct
Unknown class - 1 · never closed · DOB violation
Nothing on record
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
24 datasetsFEMA
- FEMA National Flood Hazard Layer2026-10-21
- OpenFEMA NFIP Redacted Claims (v3)2026-09-09
NYC DCP
- NYC GeoSearch (address directory)2026-10-21
- PLUTO (tax lot data)2026-08-24
NYC DEP
NYC DEP / Mayor's Office
- NYC Stormwater Flood Maps2024-07-03
NYC DOB
- DOB NOW Elevator Safety Compliance2026-10-20
- DOB NOW: Build – Approved Permits2026-10-20
- DOB NOW: Safety Boiler2026-10-20
- DOB NOW: Safety – Facades Compliance Filings2026-10-20
- DOB Permit Issuance (BIS)2026-10-20
- DOB Safety Violations2026-10-20
- DOB Violations2026-10-20
NYC DOB / Mayor's Office
NYC DOF
- NYC Citywide Annualized Calendar Sales2026-06-09
NYC HPD
- Buildings Subject to HPD Jurisdiction2026-08-12
- Housing Maintenance Code Complaints and Problems2026-10-21
- Housing Maintenance Code Violations2026-10-20
- Multiple Dwelling Registrations2026-08-12
- Registration Contacts2026-08-12
NYC OTI
- AddressPoint2026-07-07
- Building Footprints2026-10-19
NYC Rent Guidelines Board / NYS HCR
Each date is when we last checked that dataset, not when the record itself was created.
Every row shows the record it came from and the date it was last checked.
These are city records, not an inspection by Blueflo. Every item shows its source and the date it was last checked.
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Not an inspection and not a warranty. May not be used for tenant screening — terms of use · privacy.