474 9th Street

474 9th Street in Park Slope, Brooklyn, has 15 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 · 3 units · Built 1882

StreetSpy grade: D (Poor, 55/100)

• 15 open housing violations, none in the most serious class.
• 1 open violation is classified rent-impairing under NY Multiple Dwelling Law section 302-a.
• The owner has 9 buildings on record; 5 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 8 in 10 Brooklyn buildings this size.

• Repairs: High (15 open), 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: Clear (No open DOB violations), 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)

15 open violations: 0 class C (immediately hazardous), 12 class B, 3 class A. 1 issued in the last 12 months. 23 on record. Oldest open violation issued 2007-08-21. Newest violation issued 2026-04-30.

0 closed in the last 90 days. Median 8 days from issue to close for the 1 violations closed in the last 12 months.

1 open violation is 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). D26-19.07 ADM CODE 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 2008-06-26. HPD violation 981763
• Class B: Items blocking a hallway or exit (hallway). D26-10.01, 10.05 ADM CODE REMOVE ALL ENCUMBRANCES CONSISTING OF BICYCLES LADDER PAINT CANS ETC 3 STY PUBLIC HALL., issued 2008-06-26. HPD violation 981761
• Class B: Lighting defect (entrance). D26-19.05 ADM CODE PROVIDE ADEQUATE LIGHT OF NOT LESS THAN 60 WATTS INCANDESCENT OR EQUIVALENT ILLUMINATION VESTIBULE 1 STY NIGHT INSPECTION., issued 2008-06-26. HPD violation 981762
• Class B: Lighting defect. PROVIDE ADEQUATE LIGHT OF NOT LESS THAN 60 WATTS INCANDESCENT OR EQUIVALENT ILLUMINATION 2 STY BALCONY., issued 2007-08-21. HPD violation 981776
• Class B: Missing or broken smoke / CO detector. REPAIR OR REPLACE THE SMOKE DETECTOR MISSING 2 STY APT 3 MANFREDI LOCATED AT APT 3 (apt 3), issued 2007-08-21. HPD violation 981774
• Class B: Self-closing door not working (entrance). SECTION 27-2005, 2007 ADM CODE ARRANGE AND MAKE SELF-CLOSING THE DOORS ENTRANCE 2 STY APT 3. LOCATED AT APT 3 (apt 3), issued 2007-08-21. HPD violation 981775
• 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 100 WATTS REQUIRED, issued 2007-08-21. HPD violation 4532965
• Class B: No heat / heating defect. REPLACE WITH NEW THE MISSING RADIATOR CONTROL VALVE HANDLES THRU OUT 2 STY APT 3. LOCATED AT APT 3 (apt 3), issued 2007-08-21. HPD violation 981770

311 housing complaints

0 in the last 12 months, 0 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: No bedbug filing on record for this year
• 2025: Owner reported 0 infested units
• 2024: Owner reported 0 infested units
• 2023: Owner reported 0 infested units
• 2022: Owner reported 0 infested units
• 2021: Owner reported 0 infested units

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: JOHN C WALSH. This owner has 9 buildings on record, 5 graded D or F. See the full portfolio.

Last HPD registration Sep 24, 2025. Registration on file through Sep 1, 2026; renewal not yet in the city's data.

Tax lot and city IDs

BBL 3010920016, HPD building ID 135403. HPD Online, ACRIS, DOB BIS.

Nearest subway

• 7 Av (F, G), 1 min walk
• 15 St-Prospect Park (F, G), 8 min walk
• 4 Av-9 St (R), 10 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.