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ViolationScout51 certifications filed against 1 new Class C in the last 180 days.Is this your building?
Buildings520 4 Avenue, BrooklynCurrent through

520 4th Ave, Brooklyn

BBL 3-01033-0039

En español: 13 violaciones de Clase C abiertas (peligro inmediato) y 39 abiertas en total.

Certifications are being filed faster than new violations come in. 51 certifications filed against 1 new Class C in the last 180 days.

Since September 28, 2023, certifications were filed on 56 Class C violations: 55 by the original certify-by date, 1 after it. HPD now marks 2 of them False Certification. How certification works

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13 open Class C.

We read every request ourselves. When a compliance firm we work with can take the building, we introduce you to that one firm. One firm, not a list.

Your details stay with us, and go only to the one firm you are introduced to. No lists, no resale.

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Or file it yourself: what it can hold up, and how correction is filed

The case file on a building like this names who is responsible on HPD's registration and how to reach them. We prepare them for firms on our pilot, ranked by how much hazardous work is open.

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The building report reads this record for you: which violations matter, and how long this kind usually takes to clear. It is not on sale yet.

See what the report covers

HPD takes complaints from tenants through 311.

DOB violations
3 active DOB violations, most of them for low-pressure boilers. The newest was issued November 14, 2025.
Housing court
3 open housing court cases. The newest opened November 18, 2025.
HPD emergency repair orders
2 completed HPD emergency repair orders since September 28, 2023, awarded for $3,369 in total. The most recent of the 2, a general construction order, was opened November 22, 2025.

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 C13 open most often Fire Safety
Not complied with18933116520-522 4TH AVE LLC
To be reinspected18732465520-522 4TH AVE LLC
Not complied with18732450520-522 4TH AVE LLC
Fire SafetyFalse certification18732446520-522 4TH AVE LLC
Fire SafetyFalse certification18732437520-522 4TH AVE LLC
Not complied with18732435520-522 4TH AVE LLC
Heat / Hot WaterTo be reinspected18718419520-522 4TH AVE LLC
To be reinspected18633715520-522 4TH AVE LLC
Fire SafetyNot complied with17584767
No access to reinspect (first try)16746942
MoldNot complied with18079358
MoldNot complied with18079357
Vermin / InfestationNo access to reinspect (first try)16533931
Class B26 open
Notice sent19169028520-522 4TH AVE LLC
Notice sent19169027520-522 4TH AVE LLC
Notice sent19132971520-522 4TH AVE LLC
Notice sent19132969520-522 4TH AVE LLC
Notice sent19132967520-522 4TH AVE LLC
CIV14 mailed19098626520-522 4TH AVE LLC
Notice sent19011011520-522 4TH AVE LLC
MoldNotice sent to tenant19096863520-522 4TH AVE LLC
No access to reinspect (first try)18633714520-522 4TH AVE LLC
No access to reinspect (first try)18354102520-522 4TH AVE LLC
No access to reinspect (first try)18263608520-522 4TH AVE LLC
No access to reinspect (first try)18263607520-522 4TH AVE LLC
MoldNo access to reinspect (first try)17347268
No access to reinspect (first try)17041629
No access to reinspect (first try)17041624
No access to reinspect (first try)17041622
MoldNo access to reinspect (first try)17124216
Fire SafetyNo access to reinspect (first try)16592979
Fire SafetyNo access to reinspect (first try)16533930
Fire SafetyNo access to reinspect (first try)16533929
No access to reinspect (first try)16259521
No access to reinspect (first try)16259520
No access to reinspect (first try)16259519
No access to reinspect (first try)16259518
No access to reinspect (first try)16259517
Not complied with16259510

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Questions about this building

Does 520 4 Avenue, Brooklyn have open violations?

Yes. 520 4 Avenue, Brooklyn had 39 open violations on September 26, 2026: 39 from HPD. 13 are Class C, the class HPD treats as immediately hazardous.

Is 520 4 Avenue, Brooklyn getting better or worse?

Certifications are being filed faster than new violations come in. 51 certifications filed against 1 new Class C in the last 180 days. That window ends September 26, 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 4 Avenue, Brooklyn?

Since September 28, 2023, certifications were filed on 56 Class C violations: 55 by the original certify-by date, 1 after it. HPD now marks 2 of them False 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 4 Avenue, Brooklyn have active DOB violations?

Yes. 3 active DOB violations, most of them for low-pressure boilers. The newest was issued November 14, 2025. 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 4 Avenue, Brooklyn in housing court?

Yes. 3 open housing court cases. The newest opened November 18, 2025. 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.

Are any HPD emergency repair orders at 520 4 Avenue, Brooklyn marked completed?

Yes. 2 completed HPD emergency repair orders since September 28, 2023, awarded for $3,369 in total. The most recent of the 2, a general construction order, was opened November 22, 2025. 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.

When was 520 4 Avenue, Brooklyn built?

The city's record gives 1931 as the year 520 4 Avenue, Brooklyn was built, in the Department of City Planning's PLUTO tax-lot file. The same file classes it as a walk-up apartment building with 4 floors.

How many apartments does 520 4 Avenue, Brooklyn have?

The Department of City Planning's PLUTO tax-lot file lists 8 residential units at 520 4 Avenue, 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 DOB violations, HPD's housing court cases, HPD emergency repair orders and the city's PLUTO tax-lot file. This page is current through September 26, 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 DOB violations, HPD's housing court cases, HPD emergency repair orders 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 4th Ave, Brooklyn: 13 open Class C, from New York City's HPD violation and OATH/ECB hearing data. Figures through September 26, 2026. https://violationscout.com/building/520-4-avenue-brooklyn

How we count: /method.

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