309 Avenue U
Brooklyn, NY 11223BBL 3-07104-0272Map
Owner of record: 101 Main Em LLC
309 Avenue U is an office building built in 1931 in Brooklyn, 11223. The owner of record is 101 Main Em LLC. HPD has no housing violations on record for this property.
- HPD violations
- 0
- DOB violations
- 14
- ECB violations
- 0
- HPD complaints
- 0
What to know
No open immediately-hazardous violations among recent records.
HPD has not cited this building.
No balance due on recent ECB violations.
Rent stabilization
No rent-stabilized units in 2018–2024 tax bills
Violations
Most recent first. Showing up to 50 per agency.
HPD housing violations · 0
No HPD violations on record
DOB building violations · 14
- Low pressure boiler boiler required
Violation issued-failure to file 2024 external low pressure inspection
Nov 14, 2025
Dob violation - active - Low pressure boiler boiler required
Violation issued-failure to file 2023 external low pressure inspection
Sep 23, 2024
Dob violation - active - Low pressure boiler boiler required
Violation issued-failure to file 2020 external low pressure inspection
Jun 30, 2023
Dob violation - active - Low pressure boiler boiler required
Violation issued-failure to file 2021 external low pressure inspection
Jun 30, 2023
Dob violation - active - Low pressure boiler boiler required
Violation issued-failure to file 2018 external low pressure inspection
Jun 20, 2023
Dob violation - active - Low pressure boiler boiler required
Violation issued-failure to file 2019 external low pressure inspection
Jun 20, 2023
Dob violation - active - Low pressure boiler boiler required
Violation issued-failure to file 2022 external low pressure inspection
Apr 25, 2023
Dob violation - active - Low pressure boiler boiler required
Violation issued for failure to file annual boiler 2017 inspection report
Nov 8, 2019
Dob violation - active - Construction other optional
C-construction other optional
Aug 31, 2018
Dob violation - active - Low pressure boiler boiler required
Violation issued for failure to file annual boiler 2016 inspection report
Apr 6, 2018
Dob violation - active
Show 4 more ↓
- Low pressure boiler boiler required
Violation issued for failure to file annual boiler 2015 inspection report
Feb 24, 2017
Dob violation - active - Low pressure boiler boiler required
Violation issued for failure to file annual boiler 2011 inspection report
Mar 1, 2013
Dob violation - active - Low pressure boiler boiler required
Violation issued for failure to file annual boiler 2010 inspection report
Dec 13, 2011
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Aug 29, 1995
Dob violation - dismissed
ECB violations · 0
No ECB violations on record
Complaints
No HPD complaints in our records
Sales history
| Date | Price | Type | Units |
|---|---|---|---|
| Jun 18, 2026 | $1,650,000 | Office buildings | 1 |
Building details
- Building type
- Office building (O7)
- Year built
- 1931
- Floors
- 1
- Residential units
- —
- Building area
- 2,210 ft²
- Lot area
- 2,540 ft²
- Zoning
- R6A
- Community board
- 315
- Council district
- 44
- Block / lot
- 7104 / 272
- Assessed value
- $217,350
- Landmark / historic district
- No
Questions about 309 Avenue U
Who owns 309 Avenue U?
The owner of record in NYC Department of City Planning PLUTO data is 101 Main Em LLC.
Does 309 Avenue U have violations?
NYC HPD has no housing violations on record for this property.
Is 309 Avenue U rent stabilized?
No rent-stabilized units appear in its 2018–2024 tax bills. Individual apartments can still be regulated, so request the rent history from NYS Homes and Community Renewal if unsure.
When was 309 Avenue U built?
City records list 1931 as the year it was built.
Source: NYC Open Data (DCP PLUTO, HPD, DOB, ECB/OATH, DOF). Records can lag the city's systems. Data refreshed weekly.