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307 12th Street, Brooklyn

📍 Park Slope, Brooklyn Built 1912 25 units Class C1 Residential
Registered to ERNEST MCCLAIN LLC / Partnership HPD registration · updated monthly
CRITICAL RISK
11 Open Violations
3C 6B 2A
120 Complaints (12 mo) ↑ up vs prior year
5 Last 30 Days
Renting here? This building has 3 unresolved immediately-hazardous violations — ask the landlord what's being done about them before you sign.

311 Complaint Summary

5
Last 30 Days
28
Last 90 Days
120
Last 365 Days
⚠️ Complaints are up 1514% compared to the previous 6 months.
🐀 27 pest infestation complaints filed with HPD since 2024
Complaint Types (Last 12 Months)
HEAT/HOT WATER
44(38%)
UNSANITARY CONDITION
21(18%)
PLUMBING
14(12%)
PAINT/PLASTER
11(10%)
DOOR/WINDOW
8(7%)
FLOORING/STAIRS
6(5%)
ELECTRIC
6(5%)
GENERAL
5(4%)
📅 Monthly Activity Heatmap (Last 12 Months)
Aug
Sep
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Jan
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Jul

Source: NYC 311 / HPD · Synced daily · Covers HPD-managed residential buildings · Records from Jan 2024 onward

DOHMH Rat Inspection History

13 Inspections on Record
Passed Most Recent Result
2026-03-10 Most Recent Date
2026-03-10 Compliance Passed
2026-02-12 Initial Failed for Rat Activity and Other Reason
2025-02-04 Treatments Bait applied
2025-01-28 Treatments Bait applied
2025-01-16 Compliance Failed for Rat Activity
2024-11-07 Initial Failed for Rat Activity and Other Reason
2024-05-28 Initial Passed
2024-02-09 Initial Passed
2023-02-23 Initial Passed
2022-08-02 Initial Passed
2022-03-08 Treatments Bait applied
2022-02-28 Compliance Failed for Rat Activity
2021-12-21 Initial Failed for Rat Activity

Source: NYC DOHMH Rodent Inspections · Synced daily (30-day lookback) · Inspections may cover the building's block, not the exact address · DOHMH data publishes with ~10-day lag

HPD Housing Violations

2 Class A
6 Class B
3 Class C
Driving this immediately hazardous rating
Class C Properly secure the loose washbasin and cabinet at north wall, in the bathroom 2026-06-22
Class C Building door missing or defective self-close mechanism 2026-06-22
See all 11 violations ▼
Class C § 27-2005 ADM CODE PROPERLY SECURE THE LOOSE WASHBASIN AND CABINET AT NORTH WALL, IN THE BATHROOM LOCATED AT APT 21, 5th STORY, 1st APARTMENT FROM EAST AT SOUTH
2026-06-22 ▼

Violation ID: #19023335

Current Status: Open

Date Issued: 2026-06-22T00:00:00.000

Description: § 27-2005 ADM CODE PROPERLY SECURE THE LOOSE WASHBASIN AND CABINET AT NORTH WALL, IN THE BATHROOM LOCATED AT APT 21, 5th STORY, 1st APARTMENT FROM EAST AT SOUTH

Class C § 27-2005, 27-2007, 27-2041.1 HMC, §238, § 309; § 107 (2) ( C) MDL AND 28 RCNY §25-171: REPLACE OR REPAIR THE SELF-CLOSING DOORS THAT IS MISSING OR DEFECTIVE HINGES AT THE EAST ENTRANCE DOOR TO INNER COURT , AT PUBLIC HALL, 1st STORY
2026-06-22 ▼

Violation ID: #19023341

Current Status: Open

Date Issued: 2026-06-22T00:00:00.000

Description: § 27-2005, 27-2007, 27-2041.1 HMC, §238, § 309; § 107 (2) ( C) MDL AND 28 RCNY §25-171: REPLACE OR REPAIR THE SELF-CLOSING DOORS THAT IS MISSING OR DEFECTIVE HINGES AT THE EAST ENTRANCE DOOR TO INNER COURT , AT PUBLIC HALL, 1st STORY

Class C HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF RODENTS RATS DROPPINGS IN THE ENTIRE APARTMENT LOCATED AT APT 14, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH
2025-01-16 ▼

Violation ID: #17628673

Current Status: Open

Date Issued: 2025-01-16T00:00:00.000

Description: HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF RODENTS RATS DROPPINGS IN THE ENTIRE APARTMENT LOCATED AT APT 14, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH

Class B § 27-2005 ADM CODE REPAIR THE ROOF SO THAT IT WILL NOT LEAK AT CEILING IN THE KITCHEN LOCATED AT APT 21, 5th STORY, 1st APARTMENT FROM EAST AT SOUTH
2026-06-22 ▼

Violation ID: #19023333

Current Status: Open

Date Issued: 2026-06-22T00:00:00.000

Description: § 27-2005 ADM CODE REPAIR THE ROOF SO THAT IT WILL NOT LEAK AT CEILING IN THE KITCHEN LOCATED AT APT 21, 5th STORY, 1st APARTMENT FROM EAST AT SOUTH

Class B § 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR THE CEILING, EAST, WEST AND NORTH WALLS, IN THE KITCHEN LOCATED AT APT 21, 5th STORY, 1st APARTMENT FROM EAST AT SOUTH
2026-06-22 ▼

Violation ID: #19023334

Current Status: Open

Date Issued: 2026-06-22T00:00:00.000

Description: § 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR THE CEILING, EAST, WEST AND NORTH WALLS, IN THE KITCHEN LOCATED AT APT 21, 5th STORY, 1st APARTMENT FROM EAST AT SOUTH

Class B § 27-2045(B)(1)(A) HMC, § 12-01, § 12-03 RCNY REPAIR, REPLACE OR PROVIDE AN APPROVED AND OPERATIONAL SMOKE DETECTING DEVICE, INSTALLED IN ACCORDANCE WITH DEPARTMENT OF BUILDINGS RULES AND REGULATIONS DEFECTIVE IN THE ENTIRE APARTMENT LOCATED AT APT 21, 5th STORY, 1st APARTMENT FROM EAST AT SOUTH
2026-06-22 ▼

Violation ID: #19023337

Current Status: Open

Date Issued: 2026-06-22T00:00:00.000

Description: § 27-2045(B)(1)(A) HMC, § 12-01, § 12-03 RCNY REPAIR, REPLACE OR PROVIDE AN APPROVED AND OPERATIONAL SMOKE DETECTING DEVICE, INSTALLED IN ACCORDANCE WITH DEPARTMENT OF BUILDINGS RULES AND REGULATIONS DEFECTIVE IN THE ENTIRE APARTMENT LOCATED AT APT 21, 5th STORY, 1st APARTMENT FROM EAST AT SOUTH

Class B § 27-2045(B)(1)(B) HMC, § 12-06, § 12-07, § 12-09 RCNY REPAIR, REPLACE OR PROVIDE AN APPROVED AND OPERATIONAL CARBON MONOXIDE DETECTING DEVICE, INSTALLED IN ACCORDANCE WITH APPLICABLE LAW AND RULES DEFECTIVE IN THE ENTIRE APARTMENT LOCATED AT APT 21, 5th STORY, 1st APARTMENT FROM EAST AT SOUTH
2026-06-22 ▼

Violation ID: #19023338

Current Status: Open

Date Issued: 2026-06-22T00:00:00.000

Description: § 27-2045(B)(1)(B) HMC, § 12-06, § 12-07, § 12-09 RCNY REPAIR, REPLACE OR PROVIDE AN APPROVED AND OPERATIONAL CARBON MONOXIDE DETECTING DEVICE, INSTALLED IN ACCORDANCE WITH APPLICABLE LAW AND RULES DEFECTIVE IN THE ENTIRE APARTMENT LOCATED AT APT 21, 5th STORY, 1st APARTMENT FROM EAST AT SOUTH

Class B § 27-2005 ADM CODE & 309 M/D LAW ABATE THE NUISANCE CONSISTING OF SELF LOCKING PUSH BAR INSTALLED AT THE NORTH ENTRANCE DOOR TO ROOF, AT 1st PUBLIC HALL BULKHEAD FROM EAST, 5th STORY
2026-06-22 ▼

Violation ID: #19023339

Current Status: Open

Date Issued: 2026-06-22T00:00:00.000

Description: § 27-2005 ADM CODE & 309 M/D LAW ABATE THE NUISANCE CONSISTING OF SELF LOCKING PUSH BAR INSTALLED AT THE NORTH ENTRANCE DOOR TO ROOF, AT 1st PUBLIC HALL BULKHEAD FROM EAST, 5th STORY

Class B § 27-2017.3 HMC: TRACE AND REPAIR THE SOURCE AND ABATE THE VISIBLE MOLD CONDITION... GREATER THAN 10 SQ FT AT CEILING IN THE BATHROOM LOCATED AT APT 23, 5th STORY, 2nd APARTMENT FROM NORTH AT EAST
2026-02-14 ▼

Violation ID: #18642657

Current Status: Open

Date Issued: 2026-02-14T00:00:00.000

Description: § 27-2017.3 HMC: TRACE AND REPAIR THE SOURCE AND ABATE THE VISIBLE MOLD CONDITION... GREATER THAN 10 SQ FT AT CEILING IN THE BATHROOM LOCATED AT APT 23, 5th STORY, 2nd APARTMENT FROM NORTH AT EAST

Class A §27-2104(B) HMC POST A PROPER NOTICE REGARDING RENT STABILIZATION LAW, IN A FORM APPROVED BY THE COMMISSIONER, IN A CONSPICUOUS LOCATION WITHIN THE COMMON AREA AT THE BUILDINGS ENTRANCE. FOR MORE INFORMATION ABOUT SIGNAGE REQUIREMENTS, PLEASE VISIT: HTTPS://WWW.NYC.GOV/SITE/HPD/SERVICES-AND-INFORMATION/REQUIRED-SIGNAGE.PAGE
2026-06-22 ▼

Violation ID: #19023340

Current Status: Open

Date Issued: 2026-06-22T00:00:00.000

Description: §27-2104(B) HMC POST A PROPER NOTICE REGARDING RENT STABILIZATION LAW, IN A FORM APPROVED BY THE COMMISSIONER, IN A CONSPICUOUS LOCATION WITHIN THE COMMON AREA AT THE BUILDINGS ENTRANCE. FOR MORE INFORMATION ABOUT SIGNAGE REQUIREMENTS, PLEASE VISIT: HTTPS://WWW.NYC.GOV/SITE/HPD/SERVICES-AND-INFORMATION/REQUIRED-SIGNAGE.PAGE

Class A § 27-2005 ADM CODE PAINT METAL IN ACCORDANCE WITH DEPT. REGULATION THE 1st RISER FROM WEST AT NORTH WALL IN THE 5th ROOM FROM EAST LOCATED AT APT 5, 1st STORY, 2nd APARTMENT FROM WEST AT NORTH
2024-01-21 ▼

Violation ID: #16611768

Current Status: Open

Date Issued: 2024-01-21T00:00:00.000

Description: § 27-2005 ADM CODE PAINT METAL IN ACCORDANCE WITH DEPT. REGULATION THE 1st RISER FROM WEST AT NORTH WALL IN THE 5th ROOM FROM EAST LOCATED AT APT 5, 1st STORY, 2nd APARTMENT FROM WEST AT NORTH

⚠️ What does Class C mean?

Class C violations are classified as immediately hazardous by the HPD (e.g. lack of heat or hot water, active mold, severe rodent infestations, lead-based paint, or carbon monoxide detector issues). Landlords are legally required to resolve these immediately.

Source: NYC HPD Housing Violations · Synced daily · Open violations only — closed violations excluded · Class I (administrative/registration notices) excluded from counts

What This Means If You're Considering Renting Here

This building has 3 Class C (immediately hazardous) violations currently open — the most serious HPD category. With 120 complaints filed in the last 12 months, prospective renters should exercise significant caution, request a full HPD inspection history, and consult a tenant rights organization before signing any lease.

Data current as of July 9, 2026. Always verify independently with HPD before signing a lease.

Data Disclaimer: All compliance data on this page is synced directly from municipal reports published via NYC Open Data. Complaint counts and HPD housing violations are updated daily. Building characteristics (built year, unit count, and building class) are derived from the NYC Department of City Planning's PLUTO database.

Data last updated: July 9, 2026 · Source: NYC Open Data

⚠️ Serious Concerns Found

This building has 120 complaints and 3 Class C (immediately hazardous) violations on record in the last 12 months. Review the full violation list carefully before signing any lease.

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About This Data

Complaint data is sourced from the NYC 311 Service Requests dataset (NYC Open Data). Violation data is from the HPD Housing Maintenance Code Violations dataset. Building info is based on NYC PLUTO by NYC Department of City Planning.

All records are public-domain municipal data provided as-is. Updated daily. Last verified: July 9, 2026.