Predominantly retail with other uses

251 AVENUE U

BROOKLYN · BIN 3191385

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1931Year Built

2Stories

K4Building Class

R5BZoning

2,865 sfGross Floor Area

3Units

Rent Stabilized1 Open Violation ▸FDNY Report ↗

Predominantly retail with other uses · Owner of record: MONACO PROPERTIES, LLC · 2,074 sf lot · 1.38 FAR built · Flood zone X

Locations of Work

No floor-level scope or drawing coverage on file for this building.

▾Owner History (Filing Record)

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

Owner	Filings	Most Recent
DYKER MANAGEMENT REALTY	4	04/09/2026
OWNER OF 251 AVE U	3	03/22/2026
MONACO PROPERTIES LLC	2	03/21/2026

▾Design Consultants (Architect / Engineer of Record)

Firm	Filings	Most Recent
NEW AIR SOLUTION INC.	1	11/05/2025

▾Filing Representatives (Expediters)

Representative	Filings	Most Recent
H J BUILDING CONSULTING	2	03/21/2026

▾Contractors (License-Anchored)

Firm	Trade	Roles	Most Recent
CROSSFIELD PLBG.&HTG	Plumbing	1	07/08/2026

▾Special Inspection Agencies

Agency	License #	Filings	Most Recent
NEW AIR SOLUTION INC	8418	1	11/05/2025

Building Lifecycle

All (42)Filed (1)Permit Issued (1)Signed Off (1)Violation (28)Inspection (3)Special Inspection (8)

08/20/2026

Signed off — Alteration

CAP AND REMOVE EXISTING BOILER, REPLACE HOT WATER HEATER AT EXISTING 2-STORY BUILDING AT CELLAR ONLY AS PER PLANS FILED HEREWITH. NO CHANGE IN USE, EGRESS OR CERTIFICATE OF OCCUPANCY.

B01314083-I1

01/16/2026

Inspection — Certified Water and Sanitary-WS-Fixtures-Finish

Certified

View inspection ↗

01/12/2026

Inspection — Pass-Final PL - Up to 3 Requested Floors

Pass

View inspection ↗

01/06/2026

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

Certified

View inspection ↗

11/14/2025

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

11/10/2025

Permit issued — Plumbing

B01314083-I1-PL

11/05/2025

Filed — Alteration

CAP AND REMOVE EXISTING BOILER, REPLACE HOT WATER HEATER AT EXISTING 2-STORY BUILDING AT CELLAR ONLY AS PER PLANS FILED HEREWITH. NO CHANGE IN USE, EGRESS OR CERTIFICATE OF OCCUPANCY.

B01314083-I1

11/05/2025

Special inspection requirement — Fire-Resistant Penetrations and Joints

Tianchen Hu

11/05/2025

Special inspection requirement — Tenant Protection Plan Compliance

Tianchen Hu

11/05/2025

Special inspection requirement — Energy Code Compliance Inspections

Tianchen Hu

11/05/2025

Special inspection requirement — HVAC-R and service water piping design and insulation

Tianchen Hu

11/05/2025

Special inspection requirement — Maintenance information

Tianchen Hu

11/05/2025

Special inspection requirement — HVAC-R and service water heating equipment

Tianchen Hu

11/05/2025

Special inspection requirement — HVAC-R and service water heating system controls

Tianchen Hu

11/05/2025

Special inspection requirement — Permanent certificate

Tianchen Hu

09/23/2024

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

11/28/2023

Violation issued (HPD, closed)

06/30/2023

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

06/30/2023

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

06/20/2023

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

06/20/2023

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

04/25/2023

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

11/17/2022

Violation issued (HPD, closed)

03/16/2022

Violation issued (HPD, closed)

11/08/2019

Violation issued (HPD, closed)

11/08/2019

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

03/01/2013

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

12/13/2011

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

12/31/2009

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

06/14/2005

Violation issued (HPD, open)

02/13/2004

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

03/19/2003

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

03/26/2002

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

02/27/2001

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

11/24/1999

Violation issued (ECB, closed)

Construction

03/16/1999

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

03/25/1998

Violation issued (ECB, closed)

Construction

03/18/1998

Violation issued (ECB, closed)

Construction

12/23/1997

Violation issued (ECB, closed)

Construction

12/18/1997

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

07/25/1994

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

05/16/1992

Violation issued (ECB, closed)

Construction

Permit / Filing Register

Source	Work Type	Status	Applicant	Issued
DOB NOW	Plumbing	Signed-off	CROSSFIELD PLBG.&HTG	11/10/2025
BIS	MH	ISSUED	ADMIRAL AIR CONDITION COR	03/24/2003

1 project · most recent 11/05/2025

Gas

Filed	Status	Contractor	Scope
11/05/2025	Signed-off	CROSSFIELD PLBG.&HTG	Gas

1 project · most recent 03/02/2026

HVAC Wiring

Filed	Status	Contractor	Scope
03/02/2026	Complete	JKL ELECTRIC LLC	HVAC Wiring

▾Field Inspections (DOB CAP) — 3

Date	Type	Result	Report
01/16/2026	Certified Water and Sanitary-WS-Fixtures-Finish	Certified	View ↗
01/12/2026	Pass-Final PL - Up to 3 Requested Floors	Pass	View ↗
01/06/2026	Certified Remove/Cap - work done in accordance with code	Certified	View ↗

▾Special Inspection Requirements (DOB NOW) — 8

Date	Requirement	Inspector	Role
11/05/2025	Fire-Resistant Penetrations and Joints	Tianchen Hu	special
11/05/2025	Tenant Protection Plan Compliance	Tianchen Hu	special
11/05/2025	Energy Code Compliance Inspections	Tianchen Hu	progress
11/05/2025	HVAC-R and service water piping design and insulation	Tianchen Hu	energy_progress
11/05/2025	Maintenance information	Tianchen Hu	energy_progress
11/05/2025	HVAC-R and service water heating equipment	Tianchen Hu	energy_progress
11/05/2025	HVAC-R and service water heating system controls	Tianchen Hu	energy_progress
11/05/2025	Permanent certificate	Tianchen Hu	energy_progress

▾Documents — 18 on file (BIS + DOB NOW)

▸Plans & Drawings1

▸DOB NOWPlans/Sketch1

08/20/2026B01314083-I1Request digital key ↗

▸Applications & Permits1

▸BISPLAN / WORK APPROVAL APPLICATION1

12/22/2016321499286Open ↗

▸Seals & Professional Certifications5

▸DOB NOWProgress Inspector Seal & Signature2

08/31/2026B01314083-I1Open ↗

▸BISTECHNICAL REPORT: RESPONSIBILITY/CERTIFICATION1

12/22/2016321499286Open ↗

▸DOB NOWDPL-1: Design Professional Seal & Signature1

08/20/2026B01314083-I1Open ↗

▸DOB NOWSpecial Inspector Seal & Signature1

08/31/2026B01314083-I1Open ↗

▸Trade Schedules & Equipment1

▸BISSCHEDULE B - PLUMBING/SPRINKLER/STANDPIPE1

12/22/2016321499286Open ↗

▸Safety & Tenant Protection2

▸BISTenant Protection Plan and Notes1

01/30/2017321499286Open ↗

▸BISSTREET TREE CHECKLIST1

12/22/2016321499286Open ↗

▸Environmental & Asbestos2

▸BISASBESTOS: CERTIFICATION (DEP ACP5)1

12/22/2016321499286Open ↗

▸DOB NOWDEP ACP-5: Asbestos Assessment Report1

08/20/2026B01314083-I1Open ↗

▸Energy Compliance1

▸BISTECHNICAL REPORT: ENERGY CODE PROGRESS INSPS1

12/22/2016321499286Open ↗

▸Approvals, Objections & Sign-offs1

▸BISSCHEDULE A - OCCUPANCY / USE1

12/22/2016321499286Open ↗

▸Cost, Insurance & Ownership1

▸BISCOST AFFIDAVIT1

12/22/2016321499286Open ↗

▸Filing & Intake Forms2

▸BISBOROUGH INTAKE FORM1

09/20/2019321499286Open ↗

▸BISEFILING COVER SHEET1

12/22/2016321499286Open ↗

▸Other Documents1

▸BISPLOT DIAGRAM1

12/22/2016321499286Open ↗