Locations of Work

ArchitectureStructuralElectricalMechanicalPlumbingFire ProtectionEquipmentGeneralOther

Roof78p · 1 filing · 20 docs

Floor 476p · 1 filing · 20 docs

Floor 378p · 1 filing · 20 docs

Floor 280p · 1 filing · 20 docs

Floor 199p · 1 filing · 20 docs

Cellar80p · 1 filing · 20 docs

Site & exterior25p · 3 filings · 20 docs

▾Owner History (Filing Record)

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

Owner	Filings	Most Recent
OWNERS REP	6	03/21/2026
544 EAST 171 STREET LLC	1	03/22/2026

▾Sales History (ACRIS)

Date	Price	Unit	Seller → Buyer	$/sf
11/18/2024	$4.2M	—	CROTONA REALTY CORP → 544 EAST 171 STREET LLC	$299/sf building

▾Design Consultants (Architect / Engineer of Record)

Firm	Filings	Most Recent
NIKOLAI KATZ ARCHITECT	7	05/05/2026
CHUN ENGINEERING CONSULTANT PLLC	3	01/26/2026
VASILIOS ARTEMIOU PE	4	01/22/2026
MSM ENGINEERING SERVICES, PLLC	1	01/08/2025
FL&M ENGINEERING DESIGN &INSPECTION	2	12/26/2024

▾Filing Representatives (Expediters)

Representative	Filings	Most Recent
EXPRESS FILING INC	26	03/21/2026
GEIGER E A GROUP	4	03/21/2026

▾Contractors (License-Anchored)

Firm	Trade	Roles	Most Recent
BUILDERS GROUP USA INC	General Contractor	11	07/08/2026
GWT ENTERPRISES INC	General Contractor	4	07/08/2026
B&B MECH PLBG & HTG LLC	Plumbing	3	07/08/2026
FRIED ELECTRIC CO.	Electrical	1	03/22/2026
SOLAS ELECTRICAL CORP	Electrical	1	03/22/2026
TARGET PIPING NY LLC	Fire Protection	1	07/08/2026

▾Special Inspection Agencies

Agency	License #	Filings	Most Recent
HRF SERVICES CORP	5616	11	05/05/2026
NKM ENGINEERING PLLC	6244	1	01/26/2026

Building Lifecycle

All (185)Filed (17)Permit Issued (10)Signed Off (8)Violation (39)Inspection (17)Objection (64)Special Inspection (30)

05/29/2026

Special inspection requirement — Fenestration air leakage

FAHAD FATEH

05/29/2026

Special inspection requirement — Fenestration areas

FAHAD FATEH

05/29/2026

Special inspection requirement — Energy Code Compliance Inspections

FAHAD FATEH

05/29/2026

Special inspection requirement — Metering

FAHAD FATEH

05/29/2026

Special inspection requirement — Structural Stability – Alterations of existing buildings

FAHAD FATEH

05/29/2026

Special inspection requirement — Fire-Resistance Rated Construction

FAHAD FATEH

05/29/2026

Special inspection requirement — Exterior lighting power

FAHAD FATEH

05/29/2026

Special inspection requirement — Interior lighting power

FAHAD FATEH

05/29/2026

Special inspection requirement — Insulation placement and R values

FAHAD FATEH

05/29/2026

Special inspection requirement — Lighting in dwelling units

FAHAD FATEH

05/29/2026

Special inspection requirement — Maintenance information

FAHAD FATEH

05/29/2026

Special inspection requirement — Air barrier - visual inspection

FAHAD FATEH

05/29/2026

Special inspection requirement — Fenestration and door U-factor and product ratings

FAHAD FATEH

05/29/2026

Special inspection requirement — Lighting controls

FAHAD FATEH

05/29/2026

Special inspection requirement — Fire-Resistant Penetrations and Joints

FAHAD FATEH

05/07/2026

Signed off — Alteration CO

INTERIOR RENOVATION CONVERTING EXISTING COMMERCIAL 4 STORY BUILDING INTO RESIDENTIAL BUILDING

X01048391-S2

05/05/2026

Filed — Alteration CO

INTERIOR RENOVATION CONVERTING EXISTING COMMERCIAL 4 STORY BUILDING INTO RESIDENTIAL BUILDING

X01048391-P7

03/27/2026

Signed off — Alteration CO

INTERIOR RENOVATION CONVERTING EXISTING COMMERCIAL 4 STORY BUILDING INTO RESIDENTIAL BUILDING

X01048391-S6

03/25/2026

Permit issued — Structural

X01048391-S6-ST

02/18/2026

Objection resolved — Addressed

02/17/2026

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

FAHAD FATEH

02/17/2026

Special inspection requirement — Post-installed Anchors

FAHAD FATEH

02/17/2026

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

FAHAD FATEH

02/17/2026

Special inspection requirement — Maintenance information

FAHAD FATEH

02/17/2026

Special inspection requirement — Sprinkler Systems

FAHAD FATEH

02/17/2026

Special inspection requirement — Fire-Resistant Penetrations and Joints

FAHAD FATEH

02/17/2026

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

FAHAD FATEH

02/16/2026

Objection raised — Other

01/26/2026

Filed — Alteration CO

INTERIOR RENOVATION CONVERTING EXISTING COMMERCIAL 4 STORY BUILDING INTO RESIDENTIAL BUILDING

X01048391-S6

01/23/2026

Special inspection requirement — Final

Lester Katz

01/23/2026

Special inspection requirement — Structural Stability – Alterations of existing buildings

NARESH MAHANGU

01/23/2026

Special inspection requirement — Designated Seismic System

NARESH MAHANGU

01/23/2026

Special inspection requirement — Structural Steel - Welding

NARESH MAHANGU

01/23/2026

Special inspection requirement — Structural Steel - High Strength Bolting

NARESH MAHANGU

01/23/2026

Special inspection requirement — Structural Steel - Details

NARESH MAHANGU

01/23/2026

Special inspection requirement — Post-installed anchors in masonry

NARESH MAHANGU

01/22/2026

Filed — Alteration CO

INTERIOR RENOVATION CONVERTING EXISTING COMMERCIAL 4 STORY BUILDING INTO RESIDENTIAL BUILDING

X01048391-P6

01/14/2026

Filed — Alteration CO

INTERIOR RENOVATION CONVERTING EXISTING COMMERCIAL 4 STORY BUILDING INTO RESIDENTIAL BUILDING

X01048391-P5

01/13/2026

Special inspection requirement — Fire-Resistant Penetrations and Joints

FAHAD FATEH

12/15/2025

Filed — Alteration CO

INTERIOR RENOVATION CONVERTING EXISTING COMMERCIAL 4 STORY BUILDING INTO RESIDENTIAL BUILDING

X01048391-P4

10/23/2025

Inspection — Pass-Final CND-Occupancy Inspection

Pass

View inspection ↗

10/17/2025

Signed off — Alteration CO

INTERIOR RENOVATION CONVERTING EXISTING COMMERCIAL 4 STORY BUILDING INTO RESIDENTIAL BUILDING

X01048391-S1

09/15/2025

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

Pass

View inspection ↗

08/28/2025

Signed off — Alteration CO

INTERIOR RENOVATION CONVERTING EXISTING COMMERCIAL 4 STORY BUILDING INTO RESIDENTIAL BUILDING

X01048391-S3

08/20/2025

Signed off — Alteration

X01149344-I1

08/20/2025

Signed off — Alteration CO

INTERIOR RENOVATION CONVERTING EXISTING COMMERCIAL 4 STORY BUILDING INTO RESIDENTIAL BUILDING

X01048391-S4

08/06/2025

Signed off — Alteration

PROPOSED INSTALLATION OF TEMPORARY LIGHT DUTY PIPE SCAFFOLD AS PER PLANS. WORK SHALL COMPLY WITH CHAPTER #33 OF 2022 THE NYC BUILDING CODE. NO CHANGE IN USE, OCCUPANCY, OR EGRESS UNDER THIS APPLICATION.

X01163506-I1

07/24/2025

Violation issued (ECB, closed)

Construction

07/16/2025

Signed off — Alteration CO

INTERIOR RENOVATION CONVERTING EXISTING COMMERCIAL 4 STORY BUILDING INTO RESIDENTIAL BUILDING

X01048391-S5

07/10/2025

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

Pass

View inspection ↗

06/18/2025

Violation issued (ECB, closed)

Construction

06/13/2025

Permit issued — Foundation

X01048391-S5-FO-EA

06/13/2025

Permit issued — Structural

X01048391-S4-ST

06/12/2025

Inspection — Fail-Final CND-Occupancy Inspection

Fail

View inspection ↗

06/10/2025

Inspection — Pass-Final CND-Occupancy Inspection

Pass

View inspection ↗

05/28/2025

Inspection — Pass-Final SP - Up to 9 Requested Floors

Pass

View inspection ↗

05/27/2025

Inspection — Certified Sprinkler-SP-Piping Dry/Wet-Hydrostatic Test

Certified

View inspection ↗

05/23/2025

Objection raised — Other

05/23/2025

Objection resolved — Addressed

05/21/2025

Objection resolved — Addressed

Latest 60 of 185 events.

Permit / Filing Register

Source	Work Type	Status	Applicant	Issued
DOB NOW	Structural	Signed-off	BUILDERS GROUP USA	03/25/2026
DOB NOW	Foundation	Signed-off	BUILDERS GROUP USA	06/13/2025
DOB NOW	Structural	Signed-off	BUILDERS GROUP USA	06/13/2025
DOB NOW	Supported Scaffold	Signed-off	GWT ENTERPRISES INC	01/14/2025
DOB NOW	General Construction	Permit Issued	BUILDERS GROUP USA	01/10/2025
DOB NOW	Plumbing	Signed-off	TARGET PIPING NY LLC	12/27/2024
DOB NOW	Plumbing	Signed-off	TARGET PIPING NY LLC	12/27/2024
DOB NOW	Mechanical Systems	Signed-off	BUILDERS GROUP USA	12/19/2024
DOB NOW	General Construction	Permit Issued	BUILDERS GROUP USA	12/12/2024
DOB NOW	Construction Fence	Signed-off	BUILDERS GROUP USA	12/06/2024
BIS	OT	ISSUED	REPUBLIC CONSTRUCTION CO	12/24/2019

1 project · most recent 05/05/2026

Heating and Air Conditioning Systems

Filed	Status	Contractor	Scope	Make / Model / Capacity
05/05/2026	Signed-off	BUILDERS GROUP USA INC	Heating and Air Conditioning Systems	Heat / Cool Daikin 2MXS18WMVJU 18,500 BTU · Heat Pump Outdoor ×34 2MXM18AXVJU 18,300 BTU · Heat Pump Outdoor ×10

1 project · most recent 05/05/2026

Sprinkler System

Filed	Status	Contractor	Scope
05/05/2026	Signed-off	TARGET PIPING NY LLC	Sprinkler System

1 project · most recent 05/05/2026

Gas Storm Water/Sanitary

Filed	Status	Contractor	Scope
05/05/2026	Signed-off	TARGET PIPING NY LLC	Gas, Storm, Water/Sanitary

2 projects · most recent 07/13/2026

General Wiring

Filed	Status	Contractor	Scope
07/13/2026	Complete	FRIED ELECTRIC CO.	General Wiring
12/09/2024	Permit Issued	SOLAS ELECTRICAL CORP	—

1 project · most recent 05/05/2026

Steel

Filed	Status	Contractor	Scope
05/05/2026	Signed-off	BUILDERS GROUP USA INC	Steel

1 project · most recent 05/05/2026

Fence

Filed	Status	Contractor	Scope
05/05/2026	Signed-off	BUILDERS GROUP USA INC	Fence

▾Field Inspections (DOB CAP) — 17

Date	Type	Result	Report
10/23/2025	Pass-Final CND-Occupancy Inspection	Pass	View ↗
09/15/2025	Pass-Final SP - Up to 3 Requested Floors	Pass	View ↗
07/10/2025	Pass-Final SP - Up to 3 Requested Floors	Pass	View ↗
06/12/2025	Fail-Final CND-Occupancy Inspection	Fail	View ↗
06/10/2025	Pass-Final CND-Occupancy Inspection	Pass	View ↗
05/28/2025	Pass-Final SP - Up to 9 Requested Floors	Pass	View ↗
05/27/2025	Certified Sprinkler-SP-Piping Dry/Wet-Hydrostatic Test	Certified	View ↗
05/07/2025	Pass-Final PL - Up to 9 Requested Floors	Pass	View ↗
04/16/2025	Pass-Final CND-Occupancy Inspection	Pass	View ↗
03/05/2025	Pass-Final PL - Up to 3 Requested Floors	Pass	View ↗
02/25/2025	Pass-Final PL - Up to 9 Requested Floors	Pass	View ↗
01/10/2025	Certified Sprinkler (PL)-SP-Fixtures (PL)-Finish	Certified	View ↗
01/08/2025	Pass-Final PL - Up to 9 Requested Floors	Pass	View ↗
01/07/2025	Certified Sprinkler (PL)-Sprinkler-Hydro	Certified	View ↗
07/10/2024	Certified Water and Sanitary-WS-Sanitary Piping-Underground	Certified	View ↗
07/01/2024	Certified Gas-Gas-Piping-Roughing	Certified	View ↗
07/01/2024	Certified Water and Sanitary-WS-Sanitary Piping-Roughing	Certified	View ↗

▾Special Inspection Requirements (DOB NOW) — 109

Date	Requirement	Inspector	Role
05/29/2026	Interior lighting power	FAHAD FATEH	energy_progress
05/29/2026	Fenestration and door U-factor and product ratings	FAHAD FATEH	energy_progress
05/29/2026	Metering	FAHAD FATEH	energy_progress
05/29/2026	Energy Code Compliance Inspections	FAHAD FATEH	progress
05/29/2026	Fire-Resistance Rated Construction	FAHAD FATEH	progress
05/29/2026	Structural Stability – Alterations of existing buildings	FAHAD FATEH	special
05/29/2026	Fire-Resistant Penetrations and Joints	FAHAD FATEH	special
05/29/2026	Maintenance information	FAHAD FATEH	energy_progress
05/29/2026	Exterior lighting power	FAHAD FATEH	energy_progress
05/29/2026	Insulation placement and R values	FAHAD FATEH	energy_progress
05/29/2026	Fenestration areas	FAHAD FATEH	energy_progress
05/29/2026	Air barrier - visual inspection	FAHAD FATEH	energy_progress
05/29/2026	Fenestration air leakage	FAHAD FATEH	energy_progress
05/29/2026	Lighting in dwelling units	FAHAD FATEH	energy_progress
05/29/2026	Lighting controls	FAHAD FATEH	energy_progress
02/17/2026	HVAC-R and service water heating equipment	FAHAD FATEH	energy_progress
02/17/2026	HVAC-R and service water piping design and insulation	FAHAD FATEH	energy_progress
02/17/2026	Sprinkler Systems	FAHAD FATEH	special
02/17/2026	Post-installed Anchors	FAHAD FATEH	special
02/17/2026	Fire-Resistant Penetrations and Joints	FAHAD FATEH	special
02/17/2026	Maintenance information	FAHAD FATEH	energy_progress
02/17/2026	HVAC-R and service water heating system controls	FAHAD FATEH	energy_progress
01/23/2026	Final	Lester Katz	progress
01/23/2026	Structural Stability – Alterations of existing buildings	NARESH MAHANGU	special
01/23/2026	Designated Seismic System	NARESH MAHANGU	special

Latest 25 of 109.

▾Documents — 114 on file (BIS + DOB NOW)

▸Plans & Drawings17

▸DOB NOWPlans/Sketch17

08/20/2026X01048391-P2Request digital key ↗

08/20/2026X01048391-P5Request digital key ↗

08/20/2026X01048391-P4Request digital key ↗

Showing 3 of 17 on file for this type

▸Applications & Permits2

▸BISWORK PERMIT APPLICATION1

12/24/2019220721869Open ↗

▸BISPLAN / WORK APPROVAL APPLICATION1

12/10/2019220721869Open ↗

▸Seals & Professional Certifications54

▸DOB NOWProgress Inspector Seal & Signature19

09/27/2026X01048391-S1Open ↗

09/01/2026X01048391-S6Open ↗

Showing 3 of 19 on file for this type

▸DOB NOWDPL-1: Design Professional Seal & Signature17

08/20/2026X01048391-P5Open ↗

08/20/2026X01048391-P4Open ↗

08/20/2026X01048391-P3Open ↗

Showing 3 of 17 on file for this type

▸DOB NOWSpecial Inspector Seal & Signature15

09/27/2026X01048391-S1Open ↗

09/01/2026X01048391-S6Open ↗

Showing 3 of 15 on file for this type

▸BISPROFESSIONAL CERTIFICATION STATEMENT1

12/10/2019220721869Open ↗

▸BISPROFESSIONAL CERTIFIED CHECKLIST1

12/10/2019220721869Open ↗

▸BISTECHNICAL REPORT: RESPONSIBILITY/CERTIFICATION1

12/10/2019220721869Open ↗

▸Safety & Tenant Protection9

▸DOB NOWStreet Tree Checklist6

08/20/2026X01048391-P5Open ↗

08/20/2026X01048391-P4Open ↗

08/20/2026X01048391-P2Open ↗

Showing 3 of 6 on file for this type

▸DOB NOWParks Department Acknowledgment Letter for Street Trees Plan1

08/13/2026X01048391-I1Open ↗

▸DOB NOWStreet Tree Sign Off1

08/14/2026X01048391-I1Open ↗

▸DOB NOWStreet Trees Site Plan1

08/13/2026X01048391-I1Open ↗

▸Environmental & Asbestos13

▸DOB NOWDEP ACP-5: Asbestos Assessment Report13

08/20/2026X01048391-P4Open ↗

08/20/2026X01048391-P2Open ↗

08/20/2026X01048391-P1Open ↗

Showing 3 of 13 on file for this type

▸Energy Compliance5

▸BISENERGY CODE COMPLIANCE INSPECTIONS2

01/21/2026220721869Open ↗

▸BISAS-BUILT ENERGY ANALYSIS (EN2)1

01/21/2026220721869Open ↗

▸BISTECHNICAL REPORT: ENERGY CODE PROGRESS INSPS1

12/10/2019220721869Open ↗

▸DOB NOWPreliminary Commissioning Report Certification1

08/13/2026X01048391-S1Open ↗

▸Approvals, Objections & Sign-offs3

▸BISFINAL2

01/21/2026220721869Open ↗

▸BISCERTIFICATE OF OCCUPANCY/LOC: REQUEST1

01/22/2026220721869Open ↗

▸Cost, Insurance & Ownership2

▸BISCOST AFFIDAVIT1

12/10/2019220721869Open ↗

▸BISCOST AFFIDAVIT (FINAL): PW31

01/21/2026220721869Open ↗

▸Filing & Intake Forms1

▸BISEFILING COVER SHEET1

12/10/2019220721869Open ↗

▸Other Documents8

▸DOB NOWProperty Ownership Certification6

08/20/2026X01048391-P5Open ↗

08/20/2026X01048391-P4Open ↗

08/20/2026X01048391-P2Open ↗

Showing 3 of 6 on file for this type

▸DOB NOWPARTIAL DEMO: 10-DAY Notice1

08/13/2026X01048391-S4Open ↗

▸DOB NOWAdjoining Owners Notification1

08/13/2026X01048391-S5Open ↗