Primarily 2 family with 1 store or office

6724 13 AVENUE

BROOKLYN · BIN 3142868

💬 Discuss this project

1899Year Built

3Stories

S2Building Class

R6BZoning

3,210 sfGross Floor Area

3Units

Rent Stabilized8 Open Violations ▸FDNY Report ↗

Primarily 2 family with 1 store or office · Owner of record: 6724 ZHENG LIN LLC · 1,235 sf lot · 2.6 FAR built · Flood zone X

Locations of Work

MechanicalPlumbing

Cellar2p · 1 filing · 10 docs

▾Owner History (Filing Record)

Companies and organizations named on filings. Individual owners are not shown.

Owner	Filings	Most Recent
6724 ZHENG LIN	19	07/08/2026

▾Sales History (ACRIS)

Date	Price	Unit	Seller → Buyer	$/sf
10/21/2015	$1.2M	—	Private party → 6724 ZHENG LIN LLC	$361/sf building

▾Design Consultants (Architect / Engineer of Record)

Firm	Filings	Most Recent
MSM ENGINEERING SERVICES, PLLC	2	01/02/2024
ALPHA HOME DESIGN LLC	2	06/16/2021

▾Filing Representatives (Expediters)

Representative	Filings	Most Recent
LC EXPEDITING SERVICES	4	03/21/2026
PHS CONSULTING SERVICE	4	03/21/2026

▾Contractors (License-Anchored)

Firm	Trade	Roles	Most Recent
TRI STATE PLBG & HTG INC	Plumbing	2	07/08/2026
ST SAFETY CONS. INC	General Contractor	1	07/08/2026
CHAMP PLUMBING & HTG CORP	Plumbing	1	07/08/2026

▾Special Inspection Agencies

Agency	License #	Filings	Most Recent
MSM ENGINEERING SERVICES,	8449	2	01/02/2024

Building Lifecycle

All (34)Filed (4)Permit Issued (4)Signed Off (2)Violation (14)Inspection (3)Special Inspection (7)

11/24/2025

Violation issued (HPD, closed)

11/14/2025

Violation issued (DOB, open)

V-DOB VIOLATION - ACTIVE

09/23/2024

Violation issued (DOB, open)

V-DOB VIOLATION - ACTIVE

01/08/2024

Permit issued — Boiler Equipment

B00977084-S1-BE

01/08/2024

Permit issued — Plumbing

B00977084-I1-PL

01/02/2024

Filed — Alteration

remove existing oil boiler and oil tank, install 3 gas boilers and 2 water heater in cellar for mixed use building

B00977084-S1

01/02/2024

Filed — Alteration

remove existing oil boiler and oil tank, install 3 gas boilers and 2 water heater in cellar for mixed use building

B00977084-I1

01/02/2024

Special inspection requirement — Tenant Protection Plan Compliance

MOHAMED MAHMOUD

01/02/2024

Special inspection requirement — Tenant Protection Plan Compliance

MOHAMED MAHMOUD

12/14/2023

Special inspection requirement — Lowest Floor Elevation

MOHAMED MAHMOUD

12/14/2023

Special inspection requirement — Fire-Resistant Penetrations and Joints

MOHAMED MAHMOUD

12/14/2023

Special inspection requirement — Energy Code Compliance Inspections

MOHAMED MAHMOUD

12/14/2023

Special inspection requirement — Fire-Resistant Penetrations and Joints

MOHAMED MAHMOUD

06/30/2023

Violation issued (DOB, open)

V-DOB VIOLATION - ACTIVE

06/30/2023

Violation issued (DOB, open)

V-DOB VIOLATION - ACTIVE

06/20/2023

Violation issued (DOB, open)

V-DOB VIOLATION - ACTIVE

06/20/2023

Violation issued (DOB, open)

V-DOB VIOLATION - ACTIVE

04/25/2023

Violation issued (DOB, open)

V-DOB VIOLATION - ACTIVE

09/14/2021

Signed off — Alteration

this application is filed to removed ecb# 35510965y, cap and removed 1 shampoo chair at 1st floor. no change in use or occupancy

B00538867-I1

09/13/2021

Inspection — Pass-Final General Construction Non-Directive 14

Pass

View inspection ↗

09/03/2021

Signed off — Alteration

this application is filed to removed ecb# 35510965y, cap and removed 1 shampoo chair at 1st floor. no change in use or occupancy

B00538867-S1

09/03/2021

Inspection — Fail-Final General Construction Non-Directive 14

Fail

View inspection ↗

08/31/2021

Inspection — Certified Remove/Cap - work done in accordance with code

Certified

View inspection ↗

08/17/2021

Permit issued — General Construction

B00538867-I1-GC

08/13/2021

Permit issued — Plumbing

B00538867-S1-PL

06/16/2021

Filed — Alteration

this application is filed to removed ecb# 35510965y, cap and removed 1 shampoo chair at 1st floor. no change in use or occupancy

B00538867-I1

06/16/2021

Filed — Alteration

this application is filed to removed ecb# 35510965y, cap and removed 1 shampoo chair at 1st floor. no change in use or occupancy

B00538867-S1

06/16/2021

Special inspection requirement — Energy Code Compliance Inspections

YAN GAO

05/24/2021

Violation issued (ECB, closed)

Zoning

05/24/2021

Violation issued (ECB, closed)

Construction

05/24/2021

Violation issued (ECB, closed)

Construction

11/08/2019

Violation issued (DOB, open)

V-DOB VIOLATION - ACTIVE

04/06/2018

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

08/29/1995

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

Permit / Filing Register

Source	Work Type	Status	Applicant	Issued
DOB NOW	Boiler Equipment	Permit Issued	DW PLUMBING INC	01/08/2024
DOB NOW	Plumbing	Permit Issued	DW PLUMBING INC	01/08/2024
DOB NOW	General Construction	Signed-off	ST SAFETY CONS. INC	08/17/2021
DOB NOW	Plumbing	Signed-off	CHAMP PLUMBING & HTG CORP	08/13/2021
BIS	FS	ISSUED	METRO FUEL OIL CO.	05/23/1995

1 project · most recent 01/02/2024

Gas

Filed	Status	Contractor	Scope
01/02/2024	Permit Issued	TRI STATE PLBG & HTG INC	Gas

▾Field Inspections (DOB CAP) — 3

Date	Type	Result	Report
09/13/2021	Pass-Final General Construction Non-Directive 14	Pass	View ↗
09/03/2021	Fail-Final General Construction Non-Directive 14	Fail	View ↗
08/31/2021	Certified Remove/Cap - work done in accordance with code	Certified	View ↗

▾Special Inspection Requirements (DOB NOW) — 7

Date	Requirement	Inspector	Role
01/02/2024	Tenant Protection Plan Compliance	MOHAMED MAHMOUD	special
01/02/2024	Tenant Protection Plan Compliance	MOHAMED MAHMOUD	special
12/14/2023	Lowest Floor Elevation	MOHAMED MAHMOUD	progress
12/14/2023	Fire-Resistant Penetrations and Joints	MOHAMED MAHMOUD	special
12/14/2023	Energy Code Compliance Inspections	MOHAMED MAHMOUD	progress
12/14/2023	Fire-Resistant Penetrations and Joints	MOHAMED MAHMOUD	special
06/16/2021	Energy Code Compliance Inspections	YAN GAO	progress

▾Documents — 17 on file (BIS + DOB NOW)

▸Plans & Drawings4

▸DOB NOWPlans/Sketch4

09/01/2026B00538867-S1Request digital key ↗

09/01/2026B00538867-I1Request digital key ↗

08/26/2026B00977084-S1Request digital key ↗

Showing 3 of 4 on file for this type

▸Seals & Professional Certifications9

▸DOB NOWDPL-1: Design Professional Seal & Signature4

09/01/2026B00538867-S1Open ↗

09/01/2026B00538867-I1Open ↗

08/26/2026B00977084-S1Open ↗

Showing 3 of 4 on file for this type

▸DOB NOWProgress Inspector Seal & Signature3

09/23/2026B00977084-S1Open ↗

09/01/2026B00977084-I1Open ↗

08/29/2026B00538867-I1Open ↗

▸DOB NOWSpecial Inspector Seal & Signature2

09/23/2026B00977084-S1Open ↗

09/01/2026B00977084-I1Open ↗

▸Environmental & Asbestos4

▸DOB NOWDEP ACP-5: Asbestos Assessment Report4

09/01/2026B00538867-S1Open ↗

09/01/2026B00538867-I1Open ↗

08/26/2026B00977084-I1Open ↗

Showing 3 of 4 on file for this type