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Design Firm
MATHEWS NIELSEN
Design · filed under 2 names
1 project with open permitsMANHATTAN · 4BROOKLYN · 2
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6 buildings
9
Total Filings
6
Projects on File
6
Buildings Worked
1
Projects w/ Open Permits
Design
Role
Activity
Projects by first filing month6 projects all-time
0134Oct '21 · 1Jun '22 · 3Jan '25 · 1Mar '26 · 120222023202420252026
bars = month · line = 3-mo average
Portfolio status
Browse projects →
Open permit117%
Signed off233%
Filed only350%
By project type
Alteration5
New Building1
Most active buildings
All buildings →
80 CENTRE STREETMANHATTAN · 1 open · latest 10/03/2025
1 projects
388 HUDSON STREETMANHATTAN · latest 01/17/2025
1 projects
MARGINAL STREETMANHATTAN · latest 03/27/2026
1 projects
GRAND STREETMANHATTAN · latest 10/22/2021
1 projects
550 VANDERBILT AVENUEBROOKLYN · latest 10/24/2022
1 projects
535 CARLTON AVENUEBROOKLYN · latest 10/14/2022
1 projects
Key relationships
Everyone →
Design firms
2 projects
1 projects
1 projects
1 projects
Filing representatives
3 projects
1 projects
1 projects
1 projects
Owners
1 projects
1 projects
People
All people →
Robert DeMarcolatest 03/12/2026
8 filings
MARY BOURNElatest 11/18/2021
1 filings
Filed under
MATHEWS NIELSEN8MARY A BOURNE1
Identified by the contact ids of the people who file for the firm and by its email domain (mnlandscape.com), not by matching names.
Most recent projects
All projects →
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M01364425 ↗MARGINAL STREET
MANHATTAN
New BuildingFiled — no permit on record03/27/2026—
Owner HUDSON RIVER PARK TRUST
Filer J. CALLAHAN CONSULTING, INC.
—
M00669488 ↗80 CENTRE STREET
MANHATTAN
AlterationPermit Issued06/27/202210/03/2025
Owner DCAS
Contractor FRATELLO CONSTRUCTION COR
Filer MUNICIPAL BUILDING CONSULTANTS
LANDSCAPING WORK TO INCLUDE PAVING, PLANTERS, RECONSTRUCTION OF SIDEWALKS AND ADA UPGRADES AS PER PLANS FILED HEREWITH. NO CHANGE TO USE, E…
M01152119 ↗388 HUDSON STREET
MANHATTAN
AlterationFiled — no permit on record01/17/2025—
Filer JAM CONSULTANTS, INC.
—
B00759517 ↗550 VANDERBILT AVENUE
BROOKLYN
AlterationSigned-off06/22/202210/24/2022
Contractor TFC PACIFIC PARK GC LLC
Filer JAM CONSULTANTS, INC.
Application filed for structural landscape work in open spaces as per Pacific Park Design Guidelines set forth by Empire State Development (…
B00759494 ↗535 CARLTON AVENUE
BROOKLYN
AlterationSigned-off06/22/202210/14/2022
Contractor TFC PACIFIC PARK GC LLC
Filer JAM CONSULTANTS, INC.
Application filed for structural landscape work in open spaces as per Pacific Park Design Guidelines set forth by Empire State Development (…
M00615991 ↗GRAND STREET
MANHATTAN
AlterationFiled — no permit on record10/22/2021—
Filer SMB CONSULTANT
—
Counts cover all 6 projects (6 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.
PersonFilingsMost recent
Robert DeMarco803/12/2026
MARY BOURNE111/18/2021
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
RGCE207/28/2023
AKRF, INC.106/07/2023
CALLISONRTKL106/07/2023
DOUGLAS P. GONZALEZ103/30/2026
GILSANZ MURRAY STEFICEK LLP106/24/2026
JACOBS106/07/2023
KS ENGINEERS, P.C.106/07/2023
LANGAN ENGINEERING110/27/2025
OFFICE FOR THE NEXT ENVIRONMENT ARC106/07/2023
PHILIP HABIB & ASSOCIATES103/30/2026
SAGE AND COOMBE ARCHITECTS103/30/2026
SHENOY ENGINEERING, P.C.103/30/2026
TJP Inc103/30/2026
TYLin110/27/2025
WESLER-COHEN ASSOCIATES106/07/2023
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
TFC PACIFIC PARK GC LLC207/28/2023
FRATELLO CONSTRUCTION COR106/24/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
DCAS106/24/2026
HUDSON RIVER PARK TRUST103/30/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
JAM CONSULTANTS, INC.310/27/2025
J. CALLAHAN CONSULTING, INC.103/30/2026
MUNICIPAL BUILDING CONSULTANTS106/24/2026
SMB CONSULTANT106/07/2023
6 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 6Open permit 1Signed off 2Filed only 3
Any typeAlteration 5New Building 1
6 projects
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M01364425 ↗MARGINAL STREET
MANHATTAN
New BuildingFiled — no permit on record03/27/2026—
Owner HUDSON RIVER PARK TRUST
Filer J. CALLAHAN CONSULTING, INC.
—
M00669488 ↗80 CENTRE STREET
MANHATTAN
AlterationPermit Issued06/27/202210/03/2025
Owner DCAS
Contractor FRATELLO CONSTRUCTION COR
Filer MUNICIPAL BUILDING CONSULTANTS
LANDSCAPING WORK TO INCLUDE PAVING, PLANTERS, RECONSTRUCTION OF SIDEWALKS AND ADA UPGRADES AS PER PLANS FILED HEREWITH. NO CHANGE TO USE, E…
M01152119 ↗388 HUDSON STREET
MANHATTAN
AlterationFiled — no permit on record01/17/2025—
Filer JAM CONSULTANTS, INC.
—
B00759517 ↗550 VANDERBILT AVENUE
BROOKLYN
AlterationSigned-off06/22/202210/24/2022
Contractor TFC PACIFIC PARK GC LLC
Filer JAM CONSULTANTS, INC.
Application filed for structural landscape work in open spaces as per Pacific Park Design Guidelines set forth by Empire State Development (…
B00759494 ↗535 CARLTON AVENUE
BROOKLYN
AlterationSigned-off06/22/202210/14/2022
Contractor TFC PACIFIC PARK GC LLC
Filer JAM CONSULTANTS, INC.
Application filed for structural landscape work in open spaces as per Pacific Park Design Guidelines set forth by Empire State Development (…
M00615991 ↗GRAND STREET
MANHATTAN
AlterationFiled — no permit on record10/22/2021—
Filer SMB CONSULTANT
—
Scope of Work
HVAC — 1 project · most recent 03/30/2026
Air Conditioning Systems
Sprinkler / Standpipe — 1 project · most recent 03/30/2026
Sprinkler System
Plumbing — 3 projects · most recent 03/30/2026
Water/Sanitary Storm Gas
Structural — 3 projects · most recent 03/30/2026
Steel Concrete
Click a row for this entity's own projects, plans and documents at that building.
BuildingFilingsMost Recent
MARGINAL STREET ↗103/12/2026
388 HUDSON STREET ↗210/16/2025
80 CENTRE STREET ↗105/16/2023
535 CARLTON AVENUE ↗209/09/2022
550 VANDERBILT AVENUE ↗209/09/2022
GRAND STREET ↗111/18/2021
▾Documents — 181 on file (BIS + DOB NOW)
▸Plans & Drawings38
▸DOB NOWPlans/Sketch38
09/03/2026M00615991-S4 · GRAND STREETRequest digital key ↗
09/03/2026M00615991-S7 · GRAND STREETRequest digital key ↗
09/03/2026M00615991-S6 · GRAND STREETRequest digital key ↗
Showing 3 of 38 on file for this type
▸Zoning, Tax Lot & Property Records1
▸DOB NOWZD1: DOB Zoning Diagram1
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 1 on file for this type
▸Seals & Professional Certifications93
▸DOB NOWSpecial Inspector Seal & Signature37
08/31/2026B00759517-P2 · 550 VANDERBILT AVENUEOpen ↗
08/31/2026B00759517-P2 · 550 VANDERBILT AVENUEOpen ↗
08/31/2026B00759494-P2 · 535 CARLTON AVENUEOpen ↗
Showing 3 of 37 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature36
09/03/2026M00615991-S6 · GRAND STREETOpen ↗
09/03/2026M00615991-S3 · GRAND STREETOpen ↗
09/03/2026M00615991-P1 · GRAND STREETOpen ↗
Showing 3 of 36 on file for this type
▸DOB NOWProgress Inspector Seal & Signature20
08/31/2026B00759517-P2 · 550 VANDERBILT AVENUEOpen ↗
08/31/2026B00759517-P2 · 550 VANDERBILT AVENUEOpen ↗
08/31/2026B00759494-P2 · 535 CARLTON AVENUEOpen ↗
Showing 3 of 20 on file for this type
▸Safety & Tenant Protection1
▸DOB NOWStreet Tree Checklist1
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 1 on file for this type
▸Environmental & Asbestos1
▸DOB NOWOER: Notice to Proceed1
08/13/2026B00759517-S2 · 550 VANDERBILT AVENUEOpen ↗
▸Approvals, Objections & Sign-offs40
▸DOB NOWFee Exempt Supporting Document - DOF ACRIS report or BIB letter26
09/03/2026M00615991-S7 · GRAND STREETOpen ↗
09/03/2026M00615991-S6 · GRAND STREETOpen ↗
09/03/2026M00615991-S3 · GRAND STREETOpen ↗
Showing 3 of 26 on file for this type
▸DOB NOWDesign Commission Approval City Owned (Exterior Work)13
09/03/2026M00615991-S6 · GRAND STREETOpen ↗
09/03/2026M00615991-S3 · GRAND STREETOpen ↗
09/03/2026M00615991-S2 · GRAND STREETOpen ↗
Showing 3 of 13 on file for this type
▸DOB NOWDesign Commission Sign Off City Owned (Exterior Work)1
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 1 on file for this type
▸Other Documents7
▸DOB NOWDHCR Document3
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 3 on file for this type
▸DOB NOWSite Survey: Initial1
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 1 on file for this type
▸DOB NOWAdjoining Owners Notification1
08/13/2026M00669488-I1 · 80 CENTRE STREETOpen ↗
▸DOB NOWPlot Diagram1
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 1 on file for this type
▸DOB NOWLocal Law 92/94 of 2019 Sustainable Roof Zone1
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 1 on file for this type