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ViolationScout18 open Class C, with 0 certifications filed and 2 new Class C in the last 180 days, too few to call a direction.Is this your building?
Buildings4240 Byron Avenue, BronxCurrent through

4240 Byron Ave, Bronx

BBL 2-04998-0024

En español: 18 violaciones de Clase C abiertas (peligro inmediato) y 51 abiertas en total.

Open violations are sitting, with little movement either way. 18 open Class C, with 0 certifications filed and 2 new Class C in the last 180 days, too few to call a direction.

Since September 28, 2023, certifications were filed on 2 Class C violations, all 2 after the original certify-by date. How certification works

Is this your building?

18 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.

¿Es su edificio? Déjenos un correo o un teléfono. Leemos cada solicitud.

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.

Request a sample file

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
6 active DOB violations, most of them for boiler filings under Local Law 62/91. The newest was issued November 8, 2019.
Rent stabilization
Has rent-stabilized apartments (2024 registration).
HPD emergency repair orders
5 completed HPD emergency repair orders since September 28, 2023, awarded for $3,500 in total. The most recent of the 5, a general construction order, was opened January 11, 2026.

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

FiledCategoryStatusNumber
Class C18 open most often Lead Paint
Heat / Hot WaterNotice sent18938212
Fire SafetyNotice sent18938206
Lead PaintDefect letter sent18379902
Lead PaintDefect letter sent18379901
Vermin / InfestationNotice sent to tenant17934556
Lead PaintNotice sent17920470
Lead PaintDefect letter sent17920234
Lead PaintDefect letter sent17920233
Lead PaintDefect letter sent17920232
Lead PaintDefect letter sent17920231
Lead PaintDefect letter sent17920230
Vermin / InfestationNotice sent to tenant17910343
Fire SafetyNotice sent17593938
Vermin / InfestationCertified late17029186
Fire SafetyNotice sent17016582
Vermin / InfestationCertified late17016548
Lead PaintNotice sent16637221
Lead PaintNotice sent16637220
Class B33 open most often Fire Safety
Notice sent19182001
Notice sent19182000
Notice sent19181999
Notice sent19181998
MoldNotice sent to tenant19228077
Notice sent18938207
Notice sent18938205
Notice sent18938204
Notice sent18938202
Notice sent18938201
Notice sent18938200
Notice sent18517467
Notice sent18517465
Notice sent18370507
Notice sent18370506
Notice sent18370504
Notice sent18370503
Notice sent18370502
Notice sent18370500
Notice sent17934555
Notice sent17934554
Notice sent17934553
Notice sent17910344
Notice sent17910341
Notice sent17910340
Fire SafetyNotice sent17029185
Fire SafetyInvalid certification17029184
Notice sent17016641
Notice sent17016613
Notice sent17016603
Fire SafetyInvalid certification17016555
Fire SafetyInvalid certification17016552
Lead PaintNotice sent16652112

The most common category among the open records here is lead paint.

Lead paint in the Bronx

Other buildings on this tax block

Nearby buildings

Questions about this building

Does 4240 Byron Avenue, Bronx have open violations?

Yes. 4240 Byron Avenue, Bronx had 51 open violations on September 26, 2026: 51 from HPD. 18 are Class C, the class HPD treats as immediately hazardous.

Is 4240 Byron Avenue, Bronx getting better or worse?

Open violations are sitting, with little movement either way. 18 open Class C, with 0 certifications filed and 2 new Class C in the last 180 days, too few to call a direction. 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 4240 Byron Avenue, Bronx?

Since September 28, 2023, certifications were filed on 2 Class C violations, all 2 after the original certify-by date. 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 4240 Byron Avenue, Bronx have active DOB violations?

Yes. 6 active DOB violations, most of them for boiler filings under Local Law 62/91. The newest was issued November 8, 2019. 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.

Are any HPD emergency repair orders at 4240 Byron Avenue, Bronx marked completed?

Yes. 5 completed HPD emergency repair orders since September 28, 2023, awarded for $3,500 in total. The most recent of the 5, a general construction order, was opened January 11, 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.

Is 4240 Byron Avenue, Bronx 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 4240 Byron Avenue, Bronx built?

The city's record gives 1928 as the year 4240 Byron Avenue, Bronx 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 3 floors.

How many apartments does 4240 Byron Avenue, Bronx have?

The Department of City Planning's PLUTO tax-lot file lists 7 residential units at 4240 Byron Avenue, Bronx. 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, the Rent Guidelines Board's stabilized-building lists, 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, the Rent Guidelines Board's stabilized-building lists, 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, 4240 Byron Ave, Bronx: 18 open Class C, from New York City's HPD violation and OATH/ECB hearing data. Figures through September 26, 2026. https://violationscout.com/building/4240-byron-avenue-bronx

How we count: /method.

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