51 St Marks Avenue

51 St Marks Avenue in Park Slope, Brooklyn, has 30 open HPD violations, and no rent-stabilized units are on its tax bill, as of Oct 25, 2026. StreetSpy grade: D (55/100).

Multi-family walk-up · 4 units · Built 1875

StreetSpy grade: D (Poor, 55/100)

• 30 open housing violations, none in the most serious class.
• 2 open violations are classified rent-impairing under NY Multiple Dwelling Law section 302-a.
• The owner has 2 buildings on record; 1 graded D or F.
• No rent-stabilized units on the tax bill. Increases aren't capped by stabilization, though Good Cause Eviction may still limit them.

More open violations per unit than 9 in 10 Brooklyn buildings this size.

• Repairs: High (30 open), records as of Oct 25, 2026
• Heat and hot water: No complaints, 12 mo, records as of Oct 25, 2026
• Pests: Clear (No bedbug filing, 3 yr), records as of Oct 27, 2026
• Safety: Clear (No open DOB violations), records as of Oct 23, 2026
• Registration: Expired Sep 1, 2018, records as of Oct 3, 2026

How the grade works

Housing code violations (HPD)

30 open violations: 0 class C (immediately hazardous), 11 class B, 11 class A, 8 class I (HPD orders such as lead paint or heat orders, not a hazard class). 1 issued in the last 12 months. 33 on record. Oldest open violation issued 2007-08-21. Newest violation issued 2026-05-06.

HPD recorded no violation closed here in the last 12 months.

2 open violations are classified rent-impairing under NY Multiple Dwelling Law section 302-a. Section 302-a; NY Courts guidance on getting repairs.

• Class B: Lighting defect (entrance). PROVIDE ADEQUATE LIGHTING AT OR NEAR THE OUTSIDE OF THE FRONT ENTRANCEWAY OF THE BUILDING AND KEEP SAME BURNING FROM SUNSET EVERY DAY TO SUNRISE ON THE DAY FOLLOWING 50 WATTS NIGHT INSPECTION., issued 2008-06-18. HPD violation 2162550
• Class B: Door, lock or intercom defect (entrance). & 309 M/D LAW ABATE THE NUISANCE CONSISTING OF FRONT ENTRANCE DOOR LOCKED PREVENTING ACCESS TO BELL BUZZER FOR APTS., issued 2008-06-18. HPD violation 2162551
• Class B: Lighting defect (entrance). D26-19.05 ADM CODE PROVIDE ADEQUATE LIGHT OF NOT LESS THAN 60 WATTS INCANDESCENT OR EQUIVALENT ILLUMINATION VESTIBULE., issued 2008-06-18. HPD violation 2162548
• Class B: Roaches. D26-13.03 ADM CODE ABATE THE NUISANCE CONSISTING OF VERMIN MICE AND ROACHES 3 STY APT 3L THRU OUT. LOCATED AT APT 3L (apt 3L), issued 2008-06-18. HPD violation 2162549
• Class B: Broken window or sash. D26-10.01 ADM CODE PROPERLY REPAIR THE BROKEN OR DEFECTIVE WINDOW SASHES 3 STY APT 3L THRU OUT. LOCATED AT APT 3L (apt 3L), issued 2008-06-18. HPD violation 2106931
• Class B: Damaged plaster or paint. D26-10.01 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR WALLS & CEILINGS 3 STY APT 3L THRU OUT. LOCATED AT APT 3L (apt 3L), issued 2008-06-18. HPD violation 2106932
• Class B: Electrical defect. D26-10.01 ADM CODE & 309 M/D LAW ABATE THE NUISANCE CONSISTING OF EXPOSE WIRE AT OUTLET 3 STY APT 3L CENTER ROOM. LOCATED AT APT 3L (apt 3L), issued 2008-06-18. HPD violation 2106935
• Class B: Damaged plaster or paint, west wall. & 309 M/D LAW ABATE THE NUISANCE CONSISTING OF EXPOSED WIRES AT WEST WALL AT PUBLIC HALL, 4th STORY, issued 2007-08-21. HPD violation 4233967

311 housing complaints

0 in the last 12 months, 0 in 5 years.

Bedbugs

No bedbug filing on record for the last 3 years. HPD's bedbug filings are self-reported by the owner once a year; HPD does not inspect to confirm them.

• 2026: No bedbug filing on record for this year
• 2025: No bedbug filing on record for this year
• 2024: No bedbug filing on record for this year
• 2023: No bedbug filing on record for this year
• 2022: No bedbug filing on record for this year
• 2021: No bedbug filing on record for this year

Buildings department (DOB)

No open DOB violations. 0 DOB violations on record. Check on DOB BIS.

Evictions and housing court

0 executed evictions in the last 3 years (0 on record). 0 open HPD cases; 0 harassment findings.

Rent stabilization

No rent-stabilized units on the tax bill.

Owner and management

Owner: DANILO DEANGELIS. This owner has 2 buildings on record, 1 graded D or F. See the full portfolio.

Last HPD registration Aug 8, 2017. HPD registration expired Sep 1, 2018 and had not been renewed as of Oct 3, 2026. Buildings with 3+ units must register with HPD every year.

Tax lot and city IDs

BBL 3009330052, HPD building ID 374830. HPD Online, ACRIS, DOB BIS.

Nearest subway

• Bergen St (2, 3), 1 min walk
• 7 Av (B, Q), 6 min walk
• Atlantic Av-Barclays Ctr (D, N, R), 6 min walk

How the grade is calculated

Sources: NYC HPD Housing Maintenance Code Violations, NYC 311 Service Requests, NYC HPD Bedbug Reporting, NYC Marshal Evictions (DOI), NYC HPD Housing Litigations, NYC DOB Violations, NYC DOF tax bills (via JustFix Who Owns What portfolio API, v2), NYC HPD Property Registration. Methodology. Report generated 2026-10-28.