420 Henry Street

420 Henry Street in Carroll Gardens, Brooklyn, has 9 open HPD violations, 1 of them class C, and no rent-stabilized units are on its tax bill, as of Oct 25, 2026. StreetSpy grade: D (62/100).

Multi-family walk-up · 8 units · Built 1888

StreetSpy grade: D (Poor, 62/100)

• 1 immediately hazardous violation open (the class that covers no heat, pests, lead paint and similar).
• The owner has 3 buildings on record; 1 graded D or F.
• Had 6 rent-stabilized units on the 2007 tax bill and none on the latest one; ask how the apartment left stabilization.

More open violations per unit than 6 in 10 Brooklyn buildings this size.

• Repairs: High (9 open, 1 class C), records as of Oct 25, 2026
• Heat and hot water: No complaints, 12 mo, records as of Oct 25, 2026
• Pests: Clear (Owner reported none, 3 yr), records as of Oct 27, 2026
• Safety: Medium (1 open DOB violation), records as of Oct 23, 2026
• Registration: Renewal not yet in city data, records as of Oct 3, 2026

How the grade works

Housing code violations (HPD)

9 open violations: 1 class C (immediately hazardous), 7 class B, 1 class A. 0 issued in the last 12 months. 21 on record. Oldest open violation issued 2009-10-01. Newest violation issued 2024-04-10. No new HPD violation has been issued here since 2024. Most of the open count is older violations that were never closed.

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

• Class C: No heat / heating defect (basement). PROVIDE READY ACCESS TO BUILDINGS HEATING SYSTEM LOCKED DOOR TO BOILER ROOM AT BASEMENT, issued 2020-01-08. HPD violation 13537415
• Class B: Fire escape defect. , 2007 ADM CODE AND DEPT. RULES AND REGULATIONS. REMOVE THE ENCUMBRANCE OBSTRUCTING EGRESS FROM FIRE ESCAPES CONSISTING OF AIR CONDITIONER UNIT AT 2ND STORY BALCONY FRONT STACK, issued 2020-01-13. HPD violation 13541830
• Class B: PROPERLY REPAIR THE BROKEN OR DEFECTIVE NORTH WINDOOW CENTER WEST ROOM AT KITCHEN 4 STY SOUTH APT 4B , SECTION '' '' (apt 4B), issued 2009-10-01. HPD violation 1568023
• Class B: Damaged plaster or paint, bathroom. PROPERLY REPAIR THE BROKEN OR DEFECTIVE TILE WALLS BATHROOM 4 STY SOUTH APT 4B , SECTION '' '' (apt 4B), issued 2009-10-01. HPD violation 1568020
• Class B: Self-closing door not working (entrance). SECTION 27-2005, 2007 ADM CODE ARRANGE AND MAKE SELF-CLOSING THE DOORS ENTRANCE TO 4 STY SOUTH APT 4B , SECTION '' '' (apt 4B), issued 2009-10-01. HPD violation 1568025
• 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 200 WATTS AT FRONT AREAWAY, issued 2009-10-01. HPD violation 3745972
• Class B: Damaged plaster or paint (hallway). REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR WALLS HALLWAY FRONT 4 STY SOUTH APT 4B , SECTION '' '' (apt 4B), issued 2009-10-01. HPD violation 1568024
• Class B: Door, lock or intercom defect (entrance). PROPERLY REPAIR THE BROKEN OR DEFECTIVE DOOR KNOBS ON ENTRANCE DOOR TO APT 4 STY SOUTH APT 4B LOCATED AT APT 4 (apt 4), issued 2009-10-01. HPD violation 1568022

311 housing complaints

0 in the last 12 months, 1 in 5 years.

Bedbugs

The owner reported 0 infested units in the last 3 years of filings. HPD's bedbug filings are self-reported by the owner once a year; HPD does not inspect to confirm them.

• 2026: Owner reported 0 infested units
• 2025: Owner reported 0 infested units
• 2024: Owner reported 0 infested units
• 2023: No bedbug filing on record for this year
• 2022: Owner reported 0 infested units
• 2021: Owner reported 0 infested units

Buildings department (DOB)

1 open DOB violation, a Local Law violation issued before 2000. 4 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: GREGORY t O'CONNELL. This owner has 3 buildings on record, 1 graded D or F. See the full portfolio.

Last HPD registration Nov 5, 2025. Registration on file through Sep 1, 2026; renewal not yet in the city's data.

Tax lot and city IDs

BBL 3003100029, HPD building ID 310820. HPD Online, ACRIS, DOB BIS.

Nearest subway

• Bergen St (F, G), 8 min walk
• Carroll St (F, G), 10 min walk
• Borough Hall (4, 5), 12 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.