Walk-up cooperative

821A UNION STREET

BROOKLYN · BIN 3019884

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1920Year Built

4Stories

C6Building Class

R6AZoning

5,940 sfGross Floor Area

4Units

Rent Stabilized1 Open Violation ▸FDNY Report ↗

Walk-up cooperative · Owner of record: 821A TENANTS CORPORATION · 2,025 sf lot · 2.93 FAR built · Flood zone X

Locations of Work

ArchitectureStructural

Floor 54p · 2 filings · 8 docs

Floor 4

Floor 3

Floor 2

Floor 1

▾Owner History (Filing Record)

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

Owner	Filings	Most Recent
821A TENANTS	11	03/22/2026

▾Design Consultants (Architect / Engineer of Record)

Firm	Filings	Most Recent
NEW AIR SOLUTION INC.	1	12/18/2025
A DEGREE OF FREEDOM STRUCTURAL ENGI	1	02/11/2020
ABRUZZO BODZIAK ARCHITECTS LLC	1	12/20/2019

▾Filing Representatives (Expediters)

Representative	Filings	Most Recent
J. CALLAHAN CONSULTING, INC.	2	03/21/2026
H J BUILDING CONSULTING	2	03/21/2026

▾Contractors (License-Anchored)

Firm	Trade	Roles	Most Recent
MR. AIR NYC CORP	General Contractor	1	04/09/2026
ORBIT PLBG & HTG INC	Plumbing	1	07/08/2026

▾Special Inspection Agencies

Agency	License #	Filings	Most Recent
NEW AIR SOLUTION INC	8418	1	12/18/2025
ATLANTIC ENGINEERINGLABOR	1381	1	02/11/2020

Building Lifecycle

All (31)Filed (3)Permit Issued (2)Signed Off (1)Violation (15)Objection (10)

05/06/2026

Violation issued (HPD, closed)

04/10/2026

Signed off — Alteration

INSTALL NEW SPLIT A.C. SYSTEM AT APT#3 OF EXISTING 4-STORY BUILDING WITH MECHANICAL WORK AS PER PLANS FILED HERE WITH. NO CHANGE IN USE, EGRESS OR CERTIFICATE OF OCCUPANCY.

B01334309-I1

03/06/2026

Permit issued — Mechanical Systems

B01334309-I1-MS

02/20/2026

Objection resolved — Addressed

02/20/2026

Objection resolved — Addressed

01/09/2026

Objection resolved — Addressed

01/09/2026

Objection resolved — Addressed

01/09/2026

Objection resolved — Addressed

01/07/2026

Objection raised — Energy

01/07/2026

Objection raised — Cost

01/07/2026

Objection raised — Scope

01/07/2026

Objection raised — Zoning

01/07/2026

Objection raised — Mechanical

12/18/2025

Filed — Alteration

INSTALL NEW SPLIT A.C. SYSTEM AT APT#3 OF EXISTING 4-STORY BUILDING WITH MECHANICAL WORK AS PER PLANS FILED HERE WITH. NO CHANGE IN USE, EGRESS OR CERTIFICATE OF OCCUPANCY.

B01334309-I1

11/19/2025

Violation issued (HPD, closed)

06/11/2025

Violation issued (HPD, closed)

04/12/2024

Violation issued (HPD, closed)

03/27/2023

Violation issued (HPD, closed)

11/09/2022

Violation issued (HPD, closed)

03/02/2022

Violation issued (HPD, closed)

04/13/2021

Violation issued (HPD, closed)

02/11/2020

Filed — Alteration

B00284147-I1

01/17/2020

Permit issued — Plumbing

B00266195-I1-PL

12/20/2019

Filed — Alteration

B00266195-I1

10/22/2018

Violation issued (HPD, closed)

11/30/2017

Violation issued (HPD, closed)

11/15/2016

Violation issued (HPD, closed)

10/14/2015

Violation issued (HPD, closed)

02/25/2015

Violation issued (HPD, closed)

06/26/1987

Violation issued (HPD, open)

01/20/1982

Violation issued (HPD, closed)

Permit / Filing Register

Source	Work Type	Status	Applicant	Issued
DOB NOW	Mechanical Systems	Signed-off	MR. AIR NYC CORP	03/06/2026
DOB NOW	Plumbing	Signed-off	ORBIT PLBG & HTG INC	01/17/2020
BIS	OT	ISSUED	K.J. REMODELING OF NY CO*	02/18/2020
BIS	OT	ISSUED	K.J. REMODELING OF NY CO*	02/06/2020
BIS	OT	ISSUED	K.J. REMODELING OF NY CO*	01/28/2020
BIS	OT	ISSUED	GALLERY RESTORATION LTD	07/19/2018
BIS	OT	ISSUED	GALLERY RESTORATION LTD	07/18/2017
BIS	PL	ISSUED	VSP MECHANICAL INC	06/08/2017
BIS	OT	ISSUED	GALLERY RESTORATION LTD	12/13/2016
BIS	—	ISSUED	WAI KEE CONSTRUCTION INC	08/20/2015
BIS	PL	ISSUED	RAYMOND'S PLBG & HTG LLC	04/22/2015
BIS	—	ISSUED	WAI KEE CONSTRUCTION INC	08/29/2014
BIS	PL	ISSUED	RAYMOND'S PLBG & HTG LLC	08/01/2013
BIS	—	ISSUED	DSK CONSTRUCTION INC	05/23/2013
BIS	EQ	ISSUED	S S BRIDGING & SCAFFOLDIN	05/14/2012

3 projects · most recent 03/06/2026

HVAC Wiring General Wiring

Filed	Status	Contractor	Scope
03/06/2026	Permit Issued	INTELOGIC ELECTRIC, INC.	HVAC Wiring
11/05/2020	Complete	LEADER ELECTRIC CO., INC	5 meters, 5 new_meters
08/06/2020	Complete	DENMAR ELECTRIC CORP	General Wiring

▾Special Inspection Requirements (DOB NOW) — 9

Date	Requirement	Inspector	Role
12/15/2025	Mechanical Systems	Tianchen Hu	special
12/15/2025	Fire-Resistant Penetrations and Joints	Tianchen Hu	special
12/15/2025	Tenant Protection Plan Compliance	Tianchen Hu	special
12/15/2025	Energy Code Compliance Inspections	Tianchen Hu	progress
12/15/2025	Final	Tianchen Hu	progress
12/15/2025	HVAC-R and service water heating system controls	Tianchen Hu	energy_progress
12/15/2025	HVAC-R and service water piping design and insulation	Tianchen Hu	energy_progress
12/15/2025	HVAC-R and service water heating equipment	Tianchen Hu	energy_progress
12/15/2025	Maintenance information	Tianchen Hu	energy_progress

▾Documents — 111 on file (BIS + DOB NOW)

▸Plans & Drawings3

▸DOB NOWPlans/Sketch1

08/19/2026B01334309-I1Request digital key ↗

▸DOB NOWPlans/Sketch - Plumbing1

09/02/2026B00266195-I1Request digital key ↗

▸DOB NOWPlans/Sketch - Structural1

09/02/2026B00284147-I1Request digital key ↗

▸Applications & Permits29

▸BISWORK PERMIT APPLICATION14

02/19/2020322006128Open ↗

02/07/2020322006128Open ↗

02/01/2020322006128Open ↗

Showing 3 of 14 on file for this type

▸BISPLAN / WORK APPROVAL APPLICATION13

12/18/2019322006128Open ↗

11/13/2019322006128Open ↗

06/13/2019321436193Open ↗

Showing 3 of 13 on file for this type

▸BISPLAN - WORK & PERMITS - SUPPPORTING DOCUMENTATION1

07/24/2017321436193Open ↗

▸BISCERTIFICATE OF OCCUPANCY: APPLICATION1

02/25/2015320374037Open ↗

▸Zoning, Tax Lot & Property Records3

▸BISZoning Diagram (ZD1)1

05/31/2012320374037Open ↗

▸BISZONING EXHIBIT I- CERTIFICATION1

05/31/2012320374037Open ↗

▸BISZONING EXHIBIT III- DESC & OWNERSHIP STMNT1

05/31/2012320374037Open ↗

▸Seals & Professional Certifications19

▸BISTECHNICAL REPORT: RESPONSIBILITY/CERTIFICATION10

12/31/2019322006128Open ↗

12/18/2019322006128Open ↗

Showing 3 of 10 on file for this type

▸DOB NOWDPL-1: Design Professional Seal & Signature3

08/19/2026B01334309-I1Open ↗

08/13/2026B00266195-I1Open ↗

08/13/2026B00284147-I1Open ↗

▸DOB NOWProgress Inspector Seal & Signature2

09/23/2026B01334309-I1Open ↗

▸BISPROFESSIONAL CERTIFICATION STATEMENT FORM1

05/15/2012320477890Open ↗

▸BISPROFESSIONAL CERTIFICATION STATEMENT1

12/07/2016321436193Open ↗

▸BISPROFESSIONAL CERTIFIED CHECKLIST1

12/07/2016321436193Open ↗

▸DOB NOWSpecial Inspector Seal & Signature1

09/23/2026B01334309-I1Open ↗

▸Trade Schedules & Equipment7

▸BISSELF-CERT PLUMBING NOTICE3

08/17/2015320374037Open ↗

06/15/2015320374037Open ↗

12/02/2013320374037Open ↗

▸BISSCHEDULE B - PLUMBING3

08/07/2013320374037Open ↗

07/31/2013320374037Open ↗

05/31/2012320374037Open ↗

▸BISSCHEDULE B - PLUMBING/SPRINKLER/STANDPIPE1

12/07/2016321436193Open ↗

▸Safety & Tenant Protection7

▸BISTenant Protection Plan and Notes2

11/13/2019322006128Open ↗

12/07/2016321436193Open ↗

▸DOB NOWTenant Protection Plan2

08/13/2026B00266195-I1Open ↗

08/13/2026B00284147-I1Open ↗

▸BISSTREET TREE CHECKLIST1

12/07/2016321436193Open ↗

▸BISST-1 Street Tree Checklist1

05/31/2012320374037Open ↗

▸BISDEMOLITION SUBMITTAL CERTIFICATION FORM1

05/30/2013320374037Open ↗

▸Environmental & Asbestos5

▸BISASBESTOS: CERTIFICATION (DEP ACP5)3

12/23/2019322006128Open ↗

12/18/2019322006128Open ↗

12/07/2016321436193Open ↗

▸DOB NOWDEP ACP-5: Asbestos Assessment Report2

08/13/2026B00266195-I1Open ↗

08/13/2026B00284147-I1Open ↗

▸Energy Compliance6

▸BISTECHNICAL REPORT: ENERGY CODE PROGRESS INSPS4

12/18/2019322006128Open ↗

11/13/2019322006128Open ↗

12/07/2016321436193Open ↗

Showing 3 of 4 on file for this type

▸BISTR8: Energy Code Progress Inspections1

05/31/2012320374037Open ↗

▸BISAS-BUILT ENERGY ANALYSIS1

05/16/2016320374037Open ↗

▸Inspections & Test Reports1

▸BISTECHNICAL REPORT: SOIL INSPECTION1

12/31/2019322006128Open ↗

▸Approvals, Objections & Sign-offs10

▸BISLETTERS - SUPPORTING DOCUMENTATION5

05/30/2013320374037Open ↗

Showing 3 of 5 on file for this type

▸BISCERTIFICATE OF OCCUPANCY/LOC: REQUEST2

05/16/2016320374037Open ↗

04/29/2016320477890Open ↗

▸BISSCHEDULE A - OCCUPANCY - USE2

05/30/2012320374037Open ↗

05/21/2012320374037Open ↗

▸BISADMINISTRATIVE OBJECTIONS1

05/16/2012320477890Open ↗

▸Cost, Insurance & Ownership11

▸BISPROJECT-SPECIFIC GL INSURANCE6

02/19/2020322006128Open ↗

02/01/2020322006128Open ↗

09/09/2015320374037Open ↗

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▸BISCOST AFFIDAVIT3

12/07/2016321436193Open ↗

05/16/2016320374037Open ↗

05/31/2012320374037Open ↗

▸BISPROJECT SPECIFIC GENERAL LIABILITY INSURANCE (PGLI)1

06/19/2014320374037Open ↗

▸BISAcord 25 (Acord Certificate of Liability Insurance)1

09/09/2015320374037Open ↗

▸Filing & Intake Forms8

▸BISADDITIONAL INFORMATION4

11/07/2014320374037Open ↗

10/21/2014320374037Open ↗

05/19/2014320374037Open ↗

Showing 3 of 4 on file for this type

▸BISEFILING COVER SHEET2

11/13/2019322006128Open ↗

12/07/2016321436193Open ↗

▸BISeFiling Job Application Cover Sheet2

05/31/2012320374037Open ↗

05/15/2012320477890Open ↗

▸Other Documents2

▸BISPlot Diagram1

05/31/2012320374037Open ↗

▸BISEXTERNAL FORMS - SUPPORTING DOCUMENTATION1

09/05/2014320374037Open ↗