Locations of Work

ArchitectureMechanicalPlumbing

Floor 31p · 1 filing · 2 docs

Floor 21p · 1 filing · 2 docs

Floor 1

Cellar1p · 3 filings · 19 docs

Site & exterior2p · 2 filings · 7 docs

▾Owner History (Filing Record)

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

Owner	Filings	Most Recent
1821-23 HOBART AVE	12	07/08/2026

▾Sales History (ACRIS)

Date	Price	Unit	Seller → Buyer	$/sf
07/22/2020	$1.4M	—	1821-23 HOBART AVE. CORP. → 1821 BUILDINGS LLC	$347/sf building

▾Design Consultants (Architect / Engineer of Record)

Firm	Filings	Most Recent
YOU GAO	1	07/28/2025
ALPHA HOME DESIGN LLC	1	04/24/2024
AMERILAND BROOK LLC	4	04/21/2021

▾Filing Representatives (Expediters)

Representative	Filings	Most Recent
INDESIGN STUDIO	4	03/21/2026

▾Contractors (License-Anchored)

Firm	Trade	Roles	Most Recent
WATSON'S PLBG, HTG, & BDG	Plumbing	4	07/08/2026
INNOVATING SIGNS & PRINTI	General Contractor	3	03/21/2026
NEPTUNE SIGNS AWNINGS	Scaffold	1	07/08/2026

▾Special Inspection Agencies

Agency	License #	Filings	Most Recent
YOU GAO	9407	1	07/28/2025
YAN GAO	6619	1	04/24/2024
AMERILAND BROOK LLC	1506	4	04/21/2021

Building Lifecycle

All (40)Filed (6)Permit Issued (5)Signed Off (4)Violation (11)Inspection (1)Special Inspection (13)

02/04/2026

Signed off — Alteration

ERECT AN ILLUMINATED SIGN ON WALL.NOT WITHIN VIEW OF ARTERIAL HIGHWAY OR PUBLIC PARK 1/2 ACRE OR MORE. NO CHANGE IN USE, EGRESS OR OCCUPANCY.

X01261229-I1

09/02/2025

Permit issued — Sign

X01261229-I1-SG

07/28/2025

Filed — Alteration

ERECT AN ILLUMINATED SIGN ON WALL.NOT WITHIN VIEW OF ARTERIAL HIGHWAY OR PUBLIC PARK 1/2 ACRE OR MORE. NO CHANGE IN USE, EGRESS OR OCCUPANCY.

X01261229-I1

07/24/2025

Special inspection requirement — Structural Stability – Alterations of existing buildings

You Gao

07/24/2025

Special inspection requirement — Final

You Gao

06/13/2024

Signed off — Alteration

X01037266-I1

06/12/2024

Inspection — Pass-Final General Construction Non-Directive 14

Pass

View inspection ↗

05/03/2024

Permit issued — General Construction

X01037266-I1-GC

04/24/2024

Filed — Alteration

X01037266-I1

04/17/2024

Special inspection requirement — Structural Stability – Alterations of existing buildings

YAN GAO

08/31/2023

Violation issued (ECB, closed)

Unknown

08/30/2023

Violation issued (ECB, closed)

Construction

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

04/25/2023

Violation issued (DOB, open)

V-DOB VIOLATION - ACTIVE

06/04/2021

Violation issued (ECB, closed)

Plumbing

05/27/2021

Signed off — Alteration

X00431515-I1

05/27/2021

Signed off — Alteration

INSTALL BOILER EQUIPMENT FOR RESIDENTAL USE ON 2ND & 3RD FLOOR

X00507457-I1

04/29/2021

Permit issued — Boiler Equipment

X00507457-I1-BE

04/21/2021

Filed — Alteration

INSTALL BOILER EQUIPMENT FOR RESIDENTAL USE ON 2ND & 3RD FLOOR

X00507457-I1

04/20/2021

Special inspection requirement — Heating Systems

XIAOHONG ZHAO

04/20/2021

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

XIAOHONG ZHAO

04/20/2021

Special inspection requirement — Maintenance information

XIAOHONG ZHAO

04/20/2021

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

XIAOHONG ZHAO

04/14/2021

Special inspection requirement — Heating Systems

XIAOHONG ZHAO

04/14/2021

Special inspection requirement — HVAC and service water heating equipment

XIAOHONG ZHAO

04/14/2021

Special inspection requirement — HVAC and service water heating system controls

XIAOHONG ZHAO

04/13/2021

Filed — Alteration

INSTALL BOILER AT ABOVE ADDRESS IN CONJUNCTION WITH PL JOB#X00431515 & ALT-2 JOB# 240293044

X00440619-P1

04/13/2021

Special inspection requirement — HVAC and service water heating system controls

XIAOHONG ZHAO

04/13/2021

Special inspection requirement — HVAC and service water heating equipment

XIAOHONG ZHAO

04/13/2021

Special inspection requirement — Heating Systems

XIAOHONG ZHAO

03/26/2021

Permit issued — Boiler Equipment

X00440619-I1-BE

03/19/2021

Filed — Alteration

INSTALL BOILER AT ABOVE ADDRESS IN CONJUNCTION WITH PL JOB#X00431515 & ALT-2 JOB# 240293044

X00440619-I1

11/24/2020

Permit issued — Plumbing

X00431515-I1-PL

11/20/2020

Filed — Alteration

X00431515-I1

02/11/2020

Violation issued (ECB, closed)

Construction

05/22/2019

Violation issued (ECB, closed)

Boilers

05/04/1998

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

06/09/1994

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

Permit / Filing Register

Source	Work Type	Status	Applicant	Issued
DOB NOW	Sign	Signed-off	DESTHERS, JOSEPH	09/02/2025
DOB NOW	General Construction	Signed-off	INNOVATING SIGNS & PRINTI	05/03/2024
DOB NOW	Boiler Equipment	Signed-off	WATSON'S PLBG, HTG, & BDG	04/29/2021
DOB NOW	Boiler Equipment	Permit Issued	WATSON'S PLBG, HTG, & BDG	03/26/2021
DOB NOW	Plumbing	Signed-off	WATSON'S PLBG, HTG, & BDG	11/24/2020
BIS	OT	ISSUED	SPLEN CONSTRUCTION INC	03/31/2021
BIS	OT	ISSUED	YILIN CONSTRUCTION INC	11/05/2020

1 project · most recent 11/16/2023

Filed	Status	Contractor	Scope
11/16/2023	Permit Issued	AMOR ELECTRIC CORP	—

▾Field Inspections (DOB CAP) — 1

Date	Type	Result	Report
06/12/2024	Pass-Final General Construction Non-Directive 14	Pass	View ↗

▾Special Inspection Requirements (DOB NOW) — 13

Date	Requirement	Inspector	Role
07/24/2025	Structural Stability – Alterations of existing buildings	You Gao	special
07/24/2025	Final	You Gao	progress
04/17/2024	Structural Stability – Alterations of existing buildings	YAN GAO	special
04/20/2021	Heating Systems	XIAOHONG ZHAO	special
04/20/2021	HVAC-R and service water heating system controls	XIAOHONG ZHAO	energy_progress
04/20/2021	Maintenance information	XIAOHONG ZHAO	energy_progress
04/20/2021	HVAC-R and service water heating equipment	XIAOHONG ZHAO	energy_progress
04/14/2021	Heating Systems	XIAOHONG ZHAO	special
04/14/2021	HVAC and service water heating equipment	XIAOHONG ZHAO	energy_progress
04/14/2021	HVAC and service water heating system controls	XIAOHONG ZHAO	energy_progress
04/13/2021	HVAC and service water heating system controls	XIAOHONG ZHAO	energy_progress
04/13/2021	HVAC and service water heating equipment	XIAOHONG ZHAO	energy_progress
04/13/2021	Heating Systems	XIAOHONG ZHAO	special

▾Documents — 55 on file (BIS + DOB NOW)

▸Plans & Drawings6

▸DOB NOWPlans/Sketch3

08/25/2026X00507457-I1Request digital key ↗

08/21/2026X01037266-I1Request digital key ↗

08/18/2026X01261229-I1Request digital key ↗

▸DOB NOWPlans/Sketch - Boiler Equipment2

08/25/2026X00440619-I1Request digital key ↗

08/15/2026X00440619-P1Request digital key ↗

▸DOB NOWPlans/Sketch - Plumbing1

08/25/2026X00431515-I1Request digital key ↗

▸Applications & Permits7

▸BISPLAN / WORK APPROVAL APPLICATION5

08/23/2021240293044Open ↗

08/05/2021240293044Open ↗

07/08/2021240293044Open ↗

Showing 3 of 5 on file for this type

▸BISWORK PERMIT APPLICATION2

04/02/2021240293044Open ↗

11/05/2020240293044Open ↗

▸Seals & Professional Certifications22

▸DOB NOWProgress Inspector Seal & Signature8

09/23/2026X00440619-I1Open ↗

09/23/2026X00507457-I1Open ↗

Showing 3 of 8 on file for this type

▸DOB NOWDPL-1: Design Professional Seal & Signature6

08/25/2026X00431515-I1Open ↗

08/25/2026X00440619-I1Open ↗

08/25/2026X00440619-P1Open ↗

Showing 3 of 6 on file for this type

▸DOB NOWSpecial Inspector Seal & Signature5

09/23/2026X00507457-I1Open ↗

09/23/2026X00440619-I1Open ↗

08/27/2026X00440619-P1Open ↗

Showing 3 of 5 on file for this type

▸BISPROFESSIONAL CERTIFICATION STATEMENT1

11/04/2020240293044Open ↗

▸BISTECHNICAL REPORT STATEMENT OF RESPONSIBILITY1

11/04/2020240293044Open ↗

▸BISREQUIRED ITEMS CHECKLIST FOR PROFESSIONAL CERTIFICATION1

11/04/2020240293044Open ↗

▸Environmental & Asbestos1

▸BISASBESTOS: CERTIFICATION (DEP ACP5)1

11/04/2020240293044Open ↗

▸Energy Compliance6

▸BISTECHNICAL REPORT: ENERGY CODE - RESPONSIBILITY2

11/05/2020240293044Open ↗

11/04/2020240293044Open ↗

▸BISINTERIOR LIGHTING POWER1

09/23/2021240293044Open ↗

▸BISAS-BUILT ENERGY ANALYSIS (EN2)1

09/23/2021240293044Open ↗

▸BISTECHNICAL REPORT STATEMENT OF RESPONSIBILITY FOR ENERGY CODE PROGRESS INSPECTIONS1

11/04/2020240293044Open ↗

▸DOB NOWEN2: As Built Energy Analysis.1

08/13/2026X00507457-I1Open ↗

▸Inspections & Test Reports3

▸BISTECHNICAL REPORT: RESPONSIBILITY3

09/23/2021240293044Open ↗

11/05/2020240293044Open ↗

11/04/2020240293044Open ↗

▸Approvals, Objections & Sign-offs2

▸BISSUPERSEDING LETTER1

04/02/2021240293044Open ↗

▸BISCERTIFICATE OF OCCUPANCY/LOC: REQUEST1

09/23/2021240293044Open ↗

▸Cost, Insurance & Ownership3

▸BISPROJECT SPECIFIC GENERAL LIABILITY INSURANCE1

04/02/2021240293044Open ↗

▸BISCOST AFFIDAVIT1

11/04/2020240293044Open ↗

▸BISCOST AFFIDAVIT (FINAL): PW31

09/23/2021240293044Open ↗

▸Filing & Intake Forms4

▸BISADDITIONAL INFORMATION2

08/23/2021240293044Open ↗

02/25/2021240293044Open ↗

▸BISBOROUGH INTAKE FORM1

04/02/2021240293044Open ↗

▸BISEFILING JOB APPLICATION COVER SHEET1

11/04/2020240293044Open ↗

▸Other Documents1

▸BISCONSTRUCTION - SUPPORTING DOCUMENTATION1

09/23/2021240293044Open ↗