197 St Marks Avenue

197 St Marks Avenue in Prospect Heights, Brooklyn, has 30 open HPD violations, 1 of them class C, and 1 of 6 units is rent-stabilized, as of Oct 26, 2026. StreetSpy grade: F (31/100).

Multi-family walk-up · 6 units · Built 1929

StreetSpy grade: F (Severe, 31/100)

• 1 immediately hazardous violation open (the class that covers no heat, pests, lead paint and similar).
• 2 open violations are classified rent-impairing under NY Multiple Dwelling Law section 302-a.
• 2 evictions carried out by marshals in the last 3 years.
• 1 of 6 units are rent-stabilized; 3 on the 2007 tax bill.

More open violations per unit than 8 in 10 Brooklyn buildings this size.

• Repairs: High (30 open, 1 class C), records as of Oct 26, 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 28, 2026
• Safety: Clear (No open DOB violations), records as of Oct 26, 2026
• Registration: Renewal not yet in city data, records as of Oct 3, 2026

How the grade works

Housing code violations (HPD)

30 open violations: 1 class C (immediately hazardous), 18 class B, 11 class A. 7 issued in the last 12 months. 71 on record. Oldest open violation issued 2021-03-31. Newest violation issued 2026-04-21.

0 closed in the last 90 days. Median 85 days from issue to close for the 7 violations closed 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 C: Mold, ceiling, bathroom, 3rd floor. HMC: TRACE AND REPAIR THE SOURCE AND ABATE THE VISIBLE MOLD CONDITION... AT CEILING . APPROX 35 SQ.FT IN THE BATHROOM LOCATED AT APT 3F, 3rd STORY, 1st APARTMENT FROM EAST AT SOUTH (apt 3F), issued 2022-03-15. HPD violation 15002053
• Class B: Broken window or sash, 2nd window from the east, 2nd room from the east, 3rd floor. HMC: PROPERLY REPAIR OR REPLACE THE BROKEN OR DEFECTIVE LOWER WINDOW SASH COUNTER BALANCE AT 2ND WINDOW FROM EAST IN THE 2nd ROOM FROM EAST AT SOUTH LOCATED AT APT 3F, 3rd STORY, 1st APARTMENT FROM EAST AT SOUTH (apt 3F), issued 2023-08-10. HPD violation 16153065
• Class B: Missing or broken smoke / CO detector, throughout the apartment, 3rd floor. REPAIR OR REPLACE THE SMOKE DETECTOR DEFECTIVE IN THE ENTIRE APARTMENT LOCATED AT APT 3F, 3rd STORY, 1st APARTMENT FROM EAST AT SOUTH (apt 3F), issued 2023-08-10. HPD violation 16153060
• Class B: Missing or broken smoke / CO detector, throughout the apartment, 3rd floor. HMC: REPAIR OR REPLACE THE CARBON MONOXIDE DETECTING DEVICE(S). DEFECTIVE IN THE ENTIRE APARTMENT LOCATED AT APT 3F, 3rd STORY, 1st APARTMENT FROM EAST AT SOUTH (apt 3F), issued 2023-08-10. HPD violation 16153061
• Class B: Mold, bathroom, 3rd floor. HMC: TRACE AND REPAIR THE SOURCE AND ABATE THE VISIBLE MOLD CONDITION... APPROX 8 SQ FT IN THE BATHROOM LOCATED AT APT 3F, 3rd STORY, 1st APARTMENT FROM SOUTH AT WEST ORIGINAL VIOLATION 15408513 ISSUED 02-OCT-22 HAS BEEN UPGRADED TO CLASS B PER ADMINISTRATIVE CODE §27-2017.3a(3)(a) or (b). (apt 3F), issued 2023-02-03. HPD violation 15705008
• Class B: Broken window or sash, 1st room from the north, 3rd floor. PROPERLY REPAIR THE BROKEN OR DEFECTIVE FIRST AND SECOND WINDOW FROM SOUTH AT WEST, LOWWER SASH, COUNTER BALANCE IN THE 1st ROOM FROM NORTH AT WEST LOCATED AT APT 3F, 3rd STORY, 1st APARTMENT FROM SOUTH AT WEST (apt 3F), issued 2022-10-06. HPD violation 15408511
• Class B: Electrical defect, ceiling, foyer, 3rd floor. , 2038 HMC: PROVIDE A SAFE AND ADEQUATE SUPPLY OF ELECTRIC SERVICE TO THE FIXTURES LIGHT AT THE CEILING IN THE FOYER LOCATED AT APT 3F, 3rd STORY, 1st APARTMENT FROM SOUTH AT WEST (apt 3F), issued 2022-10-06. HPD violation 15408515
• Class B: Door, lock or intercom defect, 3rd floor. PROPERLY REPAIR THE BROKEN OR DEFECTIVE DOOR LOCK IN THE ENTRANCE LOCATED AT APT 3F, 3rd STORY, 1st APARTMENT FROM SOUTH AT WEST (apt 3F), issued 2022-10-06. HPD violation 15408514

311 housing complaints

2 in the last 12 months, 14 in 5 years. Most common: Paint/Plaster (1), Unsanitary Condition (1).

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

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

Rent stabilization

1 of 6 units rent-stabilized as of 2024. Stabilized renewals: 0% for one year and 0% for two years under RGB Order #58 (Oct 1, 2026 to Sep 30, 2027).

Rent-stabilized units on city tax bills: 1 in 2024, 3 in 2007. Source: DOF tax bills for 2007 and 2024; years with no bill on file are left out.

Owner and management

Owner: 197 ST.MARKS AVE LLC. Head officer: DMITRY KNOPOV. Managing agent: HORIZON REAL ESTATE PARTNERS CORP. This owner has 2 buildings on record, 1 graded D or F. See the full portfolio.

Last HPD registration Aug 8, 2025. Registration on file through Sep 1, 2026; renewal not yet in the city's data.

Tax lot and city IDs

BBL 3011440068, HPD building ID 374671. HPD Online, ACRIS, DOB BIS.

Nearest subway

• 7 Av (B, Q), 4 min walk
• Grand Army Plaza (2, 3), 5 min walk
• Bergen St (2, 3), 7 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.