Gregory Zack Architect — NYC Architecture Firm: DOB NOW Filings, Permits & Projects

Design Firm

GREGORY ZACK ARCHITECT

Design

2 projects with open permitsMANHATTAN · 11

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5 buildings

Total Filings

Projects on File

Buildings Worked

Projects w/ Open Permits

Design

Role

Activity

Projects by first filing month11 projects all-time

bars = month · line = 3-mo average

Portfolio status

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Open permit218%

Signed off982%

By project type

Alteration11

Most active buildings

All buildings →

42 8 AVENUEMANHATTAN · latest 04/24/2023

3 projects

108 WEST WASHINGTON PLCEMANHATTAN · 2 open · latest 07/16/2026

2 projects

323 2 AVENUEMANHATTAN · latest 09/27/2022

2 projects

2138 BROADWAYMANHATTAN · latest 02/01/2022

2 projects

2 SUTTON PLACE SOUTHMANHATTAN · latest 02/24/2022

2 projects

Key relationships

Everyone →

Filing representatives

J. CALLAHAN CONSULTING, INC.

3 projects

Contractors

HAMILTON WOODWORKS LLC

3 projects

AAA TOTAL PLUMBING, INC

2 projects

RITE PLUMBING & HEATING I

2 projects

CSK DESIGN LLC

1 projects

Owners

CHARLES H. GREENTHAL MANAGEMENT\

1 projects

People

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GREGORY ZACKlatest 06/25/2025

8 filings

Most recent projects

All projects →

Project	Address	Type	Status	Filed	Latest permit	On the project	Description
M01210546 ↗	108 WEST WASHINGTON PLCE MANHATTAN	Alteration	Permit Issued	05/08/2025	07/16/2026	Contractor MC CREADY & RICE PLBG INC. Filer J. CALLAHAN CONSULTING, INC.	New powder room and laundry sink, replacement of kitchen fixtures in existing duplex apartment. No change to use, egress or occupancy.
M01208481 ↗	108 WEST WASHINGTON PLCE MANHATTAN	Alteration	Permit Issued	05/08/2025	06/23/2026	Contractor HAMILTON WOODWORKS LLC Filer J. CALLAHAN CONSULTING, INC.	RENOVATION OF DUPLEX APARTMENT IN BASEMENT & 1ST FLOOR AS PER PLANS. REPLACEMENT OF KITCHEN CABINETS & APPLIANCES. NEW POCKET DOOR. REPLACEM…
M00408507 ↗	42 8 AVENUE MANHATTAN	Alteration	Signed-off	12/01/2020	04/24/2023	Contractor AAA TOTAL PLUMBING, INC Filer J. CALLAHAN CONSULTING, INC.	Cap 1 sink and 1 gas range in existing kitchen and replace 1 lav and 1 wc in bathroom in Apartment #15E on the 15th floor. No change to use,…
M00771040 ↗	323 2 AVENUE MANHATTAN	Alteration	Signed-off	07/18/2022	09/27/2022	Contractor HAMILTON WOODWORKS	Interior renovation of existing Class A apartment (#7D) on the 7th floor. No change to use egress or occupancy.
M00771070 ↗	323 2 AVENUE MANHATTAN	Alteration	Signed-off	07/18/2022	09/14/2022	Contractor MARATHON MECHANICAL LLC	Plumbing work related to the renovation of kitchen and bathroom in Apt. #7D on the 7th floor. No change to use, egress or occupancy.
M00662355 ↗	2 SUTTON PLACE SOUTH MANHATTAN	Alteration	Signed-off	01/27/2022	02/24/2022	Contractor HAMILTON WOODWORKS	Interior renovation of Apt. #14C on the 13th construction floor. No change to use, egress or occupancy.

Counts cover all 11 projects (11 DOB NOW). Dated by first filing; BIS projects by first permit issuance.

Every person filing for this firm, identified by their DOB NOW contact id (one id is one person). A person is listed under the firm they file for most.

Person	Filings	Most recent
GREGORY ZACK	8	06/25/2025

Who this entity's projects were filed with. Top 25 per group by shared jobs.

Name	Projects together	Most recent
HAMILTON WOODWORKS LLC	3	05/08/2025
AAA TOTAL PLUMBING, INC	2	08/16/2021
RITE PLUMBING & HEATING I	2	07/18/2022
CSK DESIGN LLC	1	09/30/2021
MACREDDIN PLBG & HTG INC	1	09/30/2021
MC CREADY & RICE PLBG INC	1	06/26/2025
MC TEAM CONSTRUCTION INC	1	08/16/2021

Who this entity's projects were filed with. Top 25 per group by shared jobs.

Name	Projects together	Most recent
CHARLES H. GREENTHAL MANAGEMENT\	1	01/27/2022

Who this entity's projects were filed with. Top 25 per group by shared jobs.

Name	Projects together	Most recent
J. CALLAHAN CONSULTING, INC.	3	06/26/2025

11 DOB NOW projects, anchored the same way as Buildings Worked. Status is the project's permit state today: open = at least one permit currently issued. BIS projects show their raw permit status and are not counted as open.

All 11Open permit 2Signed off 9

11 projects

Project	Address	Type	Status	Filed	Latest permit	On the project	Description
M01210546 ↗	108 WEST WASHINGTON PLCE MANHATTAN	Alteration	Permit Issued	05/08/2025	07/16/2026	Contractor MC CREADY & RICE PLBG INC. Filer J. CALLAHAN CONSULTING, INC.	New powder room and laundry sink, replacement of kitchen fixtures in existing duplex apartment. No change to use, egress or occupancy.
M01208481 ↗	108 WEST WASHINGTON PLCE MANHATTAN	Alteration	Permit Issued	05/08/2025	06/23/2026	Contractor HAMILTON WOODWORKS LLC Filer J. CALLAHAN CONSULTING, INC.	RENOVATION OF DUPLEX APARTMENT IN BASEMENT & 1ST FLOOR AS PER PLANS. REPLACEMENT OF KITCHEN CABINETS & APPLIANCES. NEW POCKET DOOR. REPLACEM…
M00408507 ↗	42 8 AVENUE MANHATTAN	Alteration	Signed-off	12/01/2020	04/24/2023	Contractor AAA TOTAL PLUMBING, INC Filer J. CALLAHAN CONSULTING, INC.	Cap 1 sink and 1 gas range in existing kitchen and replace 1 lav and 1 wc in bathroom in Apartment #15E on the 15th floor. No change to use,…
M00771040 ↗	323 2 AVENUE MANHATTAN	Alteration	Signed-off	07/18/2022	09/27/2022	Contractor HAMILTON WOODWORKS	Interior renovation of existing Class A apartment (#7D) on the 7th floor. No change to use egress or occupancy.
M00771070 ↗	323 2 AVENUE MANHATTAN	Alteration	Signed-off	07/18/2022	09/14/2022	Contractor MARATHON MECHANICAL LLC	Plumbing work related to the renovation of kitchen and bathroom in Apt. #7D on the 7th floor. No change to use, egress or occupancy.
M00662355 ↗	2 SUTTON PLACE SOUTH MANHATTAN	Alteration	Signed-off	01/27/2022	02/24/2022	Contractor HAMILTON WOODWORKS	Interior renovation of Apt. #14C on the 13th construction floor. No change to use, egress or occupancy.
M00659811 ↗	2 SUTTON PLACE SOUTH MANHATTAN	Alteration	Signed-off	01/27/2022	02/16/2022	Owner CHARLES H. GREENTHAL MANAGEMENT\ Contractor MARATHON MECHANICAL LLC	Plumbing work in Apt. #14C on the 13th construction floor. No change to use, egress or occupancy.
M00597635 ↗	2138 BROADWAY MANHATTAN	Alteration	Signed-off	09/30/2021	02/01/2022	Contractor CSK DESIGN LLC	Interior renovation of kitchen and bathrooms in existing Apartment #2GH on the 2nd floor. Replacement of existing wood floor. No change to u…
M00597691 ↗	2138 BROADWAY MANHATTAN	Alteration	Signed-off	09/30/2021	10/25/2021	Contractor MACREDDIN PLBG & HTG INC	Plumbing work in kitchen and bathrooms in Apt. #2GH on the 2nd floor. No change to use, egress or occupancy.
M00551226 ↗	42 8 AVENUE MANHATTAN	Alteration	Signed-off	08/16/2021	09/14/2021	Contractor AAA TOTAL PLUMBING, INC	Plumbing work associated with interior renovation of Apt. #14DE on the 14th floor. No change to use, egress or occupancy.
M00546933 ↗	42 8 AVENUE MANHATTAN	Alteration	Signed-off	08/16/2021	08/24/2021	Contractor MC TEAM CONSTRUCTION INC Filer J. CALLAHAN CONSULTING, INC.	Renovation and combination of existing co-op apartments (#14DE) on the 14th floor. No change to use, egress or occupancy.