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ViolationScout56 certifications filed against 22 new Class C in the last 180 days.Your building
Buildings520 East 21 Street, BrooklynCurrent through

520 East 21st St, Brooklyn

BBL 3-05184-0006

Built
1951
Floors
6
Residential units
102
Building type
Elevator building
Zoning district
R7A
Lot area
27,000 sq ft
Floor area
103,494 sq ft

En español: 65 violaciones de Clase C abiertas (peligro inmediato) y 177 abiertas en total. La más antigua del HPD lleva 10 años abierta, desde el 5 de diciembre de 2015.

Open now, most hazardous first

  1. 65

    Class C, immediately hazardous. Most often Vermin / Infestation.

    75 open counting every year, the oldest since

    Get these certified
  2. 104

    Class B, hazardous

    See the 104
  3. 8

    OATH/ECB summonses still active

    See the 8

Certifications are being filed faster than new violations come in. 56 certifications filed against 22 new Class C in the last 180 days.

Since October 12, 2023, certifications were filed on 77 Class C violations: 75 by the original certify-by date, 2 after it. HPD now marks 2 of them Invalid Certification. How certification works

The original certify-by dates on the 169 open HPD violations run from December 16, 2023 to November 25, 2026. The report prints the date beside each one.

Is this your building?

65 open Class C and no facade report filed for inspection cycle 9. The oldest open HPD violation was filed December 5, 2015.

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The building report reads this record for you: every open violation in the city's own words, what each status means, and how the building compares with others its size. Usually ready within 15 minutes of payment.

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HPD takes complaints from tenants through 311.

For a letter to your landlord or a housing court case, the report lists every open violation here, each in the city's own words with the date on its notice. Get the report, $19

Open Class C, week by week
59 on September 24, 2026 and 65 on October 8, with a low of 58 on October 1.
OATH/ECB summonses
21 DOB and FDNY summonses here since January 1, 2019, with $29,201 in penalties imposed. 7 of them are still active and among the 8 listed under OATH/ECB. 17 judgments docketed, the latest on February 28, 2026. A docketed judgment shows up in a title search.
  • July 21, 2026, DOB: Failure to maintain elevator or conveying system. $625 penalty imposed.
  • July 24, 2025, DOB: Failure to maintain elevator or conveying system. In violation, $1,250 penalty imposed.
  • August 1, 2024, DOB: Failure to maintain elevator or conveying system. In violation, $625 penalty imposed.

The newest 3 of 21 summonses OATH lists here. The report lists all 21, with each outcome, the penalty imposed and any docketing date. What the report adds

DOB violations
13 active DOB violations. The newest was issued June 20, 2023.
Housing court
3 open housing court cases. The newest opened March 11, 2026. 17 housing court cases here since 2005.
DOB complaints
2 DOB complaints in the 12 months to September 25, 2026. The newest was filed August 11, 2026.
DOB facade
No Report Filed for inspection cycle 9. Reports in earlier inspection cycles rated it SWARMP in 2015. SWARMP means safe with a repair and maintenance program. Need this filed?
DOB permits
DOB NOW lists 1 work permit here: Sidewalk Shed, issued April 21, 2025, signed off.
Energy benchmarking
ENERGY STAR score 68 for 2024, against a median of 67 for Multifamily Housing that year.
Local Law 97
Covered under Article 321, the path for certain affordable housing and houses of worship (DOB's list, March 1, 2026).
Boiler inspection
Inspected January 12, 2026. Boilers in buildings with 6 or more apartments are inspected every calendar year.
Bedbug report
Filed March 25, 2026, for the year to October 31, 2025. Buildings with 3 or more apartments file one with HPD every year.
Rent stabilization
Has rent-stabilized apartments (2024 registration).
HPD emergency repair orders
16 completed HPD emergency repair orders since October 12, 2023, awarded for $26,836 in total. The most recent of the 16, a lead paint order, was opened May 14, 2026.

Open violations by class. A party is named only where the building's HPD registration covers the date a violation was filed.

FiledCategoryStatusNumberRegistered party when filed
Class C65 open most often Vermin / Infestation
Fire SafetyNotice sent19277898
Fire SafetyNotice sent19277897
Notice sent19277895
Notice sent19277894
Notice sent19277893
Notice sent19277892
Vermin / InfestationNotice sent to tenant19277887
Lead PaintNotice sent19241159
Fire SafetyNotice sent19235569
Notice sent19235567
The report lists all 65, each with the city's own words and the date on its notice. What the report adds
Class B104 open
Notice sent19277896
Notice sent19277891
Fire SafetyNotice sent19277890
Fire SafetyNotice sent19277889
Notice sent19277888
Notice sent19235570
Notice sent19235564
Notice sent19235562
Notice sent19235561
Notice sent19235559
The report lists all 104, each with the city's own words and the date on its notice. What the report adds
OATH/ECB8 open
Elevators, Class 2Settled by agreement39197027PDITMAS FLATS LLC
Elevators, Class 2Settled by agreement39197026NDITMAS FLATS LLC
Elevators, Class 2Found in violation39120576M
Construction, Class 1Found in violation35679990J
Construction, Class 1Found in violation35679989M
Elevators, Class 2Found in violation39105111R
Construction, Class 1Found in violation35675438H
Construction, Class 1Found in violation35675428Y

The full report on 520 East 21st St, Brooklyn

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Questions about this building

Does 520 East 21 Street, Brooklyn have open violations?

Yes. 520 East 21 Street, Brooklyn had 177 open violations on October 10, 2026: 169 from HPD and 8 from OATH/ECB. 65 are Class C, the class HPD treats as immediately hazardous. The oldest open HPD violation has been open 10 years, since December 5, 2015.

Is 520 East 21 Street, Brooklyn getting better or worse?

Certifications are being filed faster than new violations come in. 56 certifications filed against 22 new Class C in the last 180 days. That window ends October 10, 2026. It compares certifications filed with new Class C violations, and it describes what happened, not what anyone intends.

When were certifications filed on Class C violations at 520 East 21 Street, Brooklyn?

Since October 12, 2023, certifications were filed on 77 Class C violations: 75 by the original certify-by date, 2 after it. HPD now marks 2 of them Invalid Certification. A certification is the filing, dated when it was made, not HPD's acceptance of it. It is compared with the original certify-by date on the notice. A granted postponement moves that date and the city's data keeps only the first, so a certification counted after it may still have met a postponed date.

Does 520 East 21 Street, Brooklyn have active DOB violations?

Yes. 13 active DOB violations. The newest was issued June 20, 2023. The Department of Buildings writes these separately from HPD's housing violations, for things like boilers, elevators, facades, construction and energy filings. Each one stays active until DOB resolves or dismisses it.

Is 520 East 21 Street, Brooklyn in housing court?

Yes. 3 open housing court cases. The newest opened March 11, 2026. 17 housing court cases here since 2005. HPD takes buildings to housing court to get violations fixed and heat and hot water restored, and it joins tenants' own repair cases, called tenant actions. A case stays open until the court closes it.

Has DOB received complaints about 520 East 21 Street, Brooklyn?

Yes. 2 DOB complaints in the 12 months to September 25, 2026. The newest was filed August 11, 2026. Anyone can complain to DOB about a building or the work going on in it, and DOB then inspects and decides whether there is a violation. A conversion complaint says an apartment may have been added or changed without approval. It is a complaint, not a finding.

Are any HPD emergency repair orders at 520 East 21 Street, Brooklyn marked completed?

Yes. 16 completed HPD emergency repair orders since October 12, 2023, awarded for $26,836 in total. The most recent of the 16, a lead paint order, was opened May 14, 2026. HPD orders an emergency repair when a hazardous condition cited in a violation, or in another agency's emergency order, is not corrected, and does the work itself or through a contractor. The amounts are what the orders were awarded for, not a bill: this page does not show what was charged to the property or whether it was paid. Orders for lab tests, such as dust-wipe and asbestos samples, are not counted.

What did the latest facade report find at 520 East 21 Street, Brooklyn?

No Report Filed for inspection cycle 9. Reports in earlier inspection cycles rated it SWARMP in 2015. SWARMP means safe with a repair and maintenance program. Buildings taller than six stories must have their exterior walls inspected once in every inspection cycle under the city's Facade Inspection Safety Program (every five years under DOB's current rule), and each inspection report is filed with DOB as Safe, SWARMP (safe with a repair and maintenance program) or Unsafe. No Report Filed means DOB has no report for that cycle. The rating is from the latest filing and does not describe the facade today; DOB's page for the building shows anything filed since.

What is the ENERGY STAR score for 520 East 21 Street, Brooklyn?

ENERGY STAR score 68 for 2024, against a median of 67 for Multifamily Housing that year. Buildings over 25,000 square feet report their energy use to the city every year under Local Law 84. The ENERGY STAR score runs from 1 to 100 and compares a building with similar ones nationwide; 50 is the national median. The score is the one the city publishes, and this page never estimates a Local Law 97 emissions penalty. A lot that reported several properties in one year is not scored here.

When was the boiler at 520 East 21 Street, Brooklyn last inspected?

On January 12, 2026. DOB requires a boiler in a building with 6 or more apartments to be inspected once every calendar year, with the report filed within 14 days of the inspection. Low-pressure boilers in residential buildings with 5 or fewer apartments are exempt.

When did 520 East 21 Street, Brooklyn last file its bedbug report?

On March 25, 2026, for the year to October 31, 2025. HPD asks the owner of every building with 3 or more apartments for this report once a year, covering November 1 to October 31, including buildings that had no bedbugs.

Is 520 East 21 Street, Brooklyn covered by Local Law 97?

Yes. It is on DOB's Local Law 97 covered buildings list. Covered under Article 321, the path for certain affordable housing and houses of worship (DOB's list, March 1, 2026). Local Law 97 sets greenhouse gas limits for most New York City buildings over 25,000 square feet, and DOB's covered buildings list says which path each building is on. The list reflects DOB's records, which owners can ask DOB to correct. This page never estimates a penalty or says whether a building complies.

Is 520 East 21 Street, Brooklyn rent stabilized?

The building has rent-stabilized apartments on its 2024 registration. That comes from the Rent Guidelines Board's list of buildings with at least one stabilized apartment registered that year. Buildings that registered late are left off, and a 421-a or J-51 building can leave stabilization when its tax benefit ends. A particular apartment's status is for NYS HCR to say.

When was 520 East 21 Street, Brooklyn built?

The city's record gives 1951 as the year 520 East 21 Street, Brooklyn was built, in the Department of City Planning's PLUTO tax-lot file. The same file classes it as an elevator building with 6 floors.

How many apartments does 520 East 21 Street, Brooklyn have?

The Department of City Planning's PLUTO tax-lot file lists 102 residential units at 520 East 21 Street, Brooklyn. The count is for the whole tax lot.

Where do these numbers come from?

From New York City's own data: HPD housing violations and OATH/ECB hearing results, read whole rather than sampled. It also draws on OATH/ECB summonses from DOB and FDNY, DOB violations, HPD's housing court cases, DOB complaints, the Rent Guidelines Board's stabilized-building lists, DOB facade filings, DOB NOW work permits, HPD emergency repair orders, Local Law 84 energy reports, DOB boiler inspection reports, HPD's annual bedbug reports, DOB's Local Law 97 covered buildings list and the city's PLUTO tax-lot file. This page is current through October 10, 2026. The city's data changes daily, so a violation certified after that can still show as open here; the city's own page for this building is linked above.

Sources. HPD housing violations and OATH/ECB hearing results, plus OATH/ECB summonses from DOB and FDNY, DOB violations, HPD's housing court cases, DOB complaints, the Rent Guidelines Board's stabilized-building lists, DOB facade filings, DOB NOW work permits, HPD emergency repair orders, Local Law 84 energy reports, DOB boiler inspection reports, HPD's annual bedbug reports, DOB's Local Law 97 covered buildings list and the city's PLUTO tax-lot file. Counts cover HPD Class B and C violations from the last 3 years that HPD still shows open, and OATH/ECB summonses from the same 3 years that the city still shows active. The city's own pages can show more, never fewer.

Cite this page

ViolationScout, 520 East 21st St, Brooklyn: 102 units, 65 open Class C, from New York City's HPD violation and OATH/ECB hearing data. Figures through October 10, 2026. https://violationscout.com/building/520-east-21-street-brooklyn

How we count: /method.

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