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No red flags found. Standard due diligence recommended.
306 Avenue J is a two-family home built in 1920 in Brooklyn with 2 residential units. It carries a Grade A health score — one of the cleaner records in its peer group, with no open violations or active complaints. Active permit activity suggests ongoing maintenance investment. Our analysis reviewed 26 records across 26 public data sources, benchmarked against similar small prewar residential buildings in NYC.
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No open violations, no complaints, no liens — this building is well-maintained and fully compliant.
DOB Complaint #30
Construction: WORK W/O A PERMIT. GARAGE HAS BEEN DEMOLISHED AT REAR. REMEDY: OBTAIN A PERMIT. — $250 penalty
Tax Year 2027 Market Value: $1,685,000
Tax Year 2026 Market Value: $1,751,000
Tax Year 2025 Market Value: $1,439,000
Tax Year 2024 Market Value: $1,337,000
Assignment
Mortgage & Consolidation — $379,833.51
Assignment
Demolition
Demolition
Demolition
Mortgage & Consolidation — $325,000
Mortgage & Consolidation — $200,000
Agreement — $400,000
Assignment
Subordination of Mortgage
Mortgage — $85,000
Assignment
Mortgage — $35,000
This report is an informational tool based on publicly available government records and does not constitute a “consumer report” under the Fair Credit Reporting Act. Building grades are editorial opinions and should not be used as the sole basis for housing, lending, or employment decisions. Data sourced from HPD, DOB, DOF, ECB, FDNY, 311, and other NYC agencies. Report errors to data@openstoop.com. See our Terms and Privacy Policy.