SILBERMAYR Architecture PLLC — NYC Architecture And Engineering Firm: DOB NOW Filings, Permits & Projects

Design Firm

SILBERMAYR Architecture PLLC

Design

BROOKLYN · 1MANHATTAN · 1

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2 buildings

Total Filings

Projects on File

Buildings Worked

Projects w/ Open Permits

Design

Role

Activity

Projects by first filing month2 projects all-time

bars = month · line = 3-mo average

Portfolio status

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Signed off150%

Filed only150%

By project type

Alteration2

Most active buildings

All buildings →

420 EAST 54 STREETMANHATTAN · latest 01/23/2026

1 projects

635 MAC DONOUGH STREETBROOKLYN · latest 08/17/2026

1 projects

Key relationships

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Design firms

GREEN SOLUTIONS ENGINEERING & ENERG

1 projects

JEFFREY BEANE ENGINEERING, PLLC

1 projects

Filing representatives

URBAN EXPEDITING LLC

1 projects

Contractors

BLACK BULL BULDERS LLC

1 projects

Owners

RIVER TOWER OWNER, LLC

1 projects

People

All people →

Lisa Silbermayrlatest 08/03/2026

3 filings

Most recent projects

All projects →

Project	Address	Type	Status	Filed	Latest permit	On the project	Description
B01440003 ↗	635 MAC DONOUGH STREET BROOKLYN	Alteration	Filed — no permit on record	08/17/2026	—	Filer SILBERMAYR Architecture PLLC	—
M01325086 ↗	420 EAST 54 STREET MANHATTAN	Alteration	Signed-off	12/19/2025	01/23/2026	Owner RIVER TOWER OWNER, LLC Contractor BLACK BULL BULDERS LLC Filer URBAN EXPEDITING LLC	GENERAL CONSTRUCTION WORK IN APT. 2901 TO CREATE A NEW BEDROOM AS PER THE PLANS FILED HEREWITH. NO CHANGE TO USE, EGRESS OR OCCUPANCY.

Counts cover all 2 projects (2 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
Lisa Silbermayr	3	08/03/2026

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

Name	Projects together	Most recent
GREEN SOLUTIONS ENGINEERING & ENERG	1	09/01/2026
JEFFREY BEANE ENGINEERING, PLLC	1	09/01/2026

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

Name	Projects together	Most recent
BLACK BULL BULDERS LLC	1	03/04/2026

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

Name	Projects together	Most recent
RIVER TOWER OWNER, LLC	1	03/04/2026

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

Name	Projects together	Most recent
URBAN EXPEDITING LLC	1	03/04/2026

2 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 2Signed off 1Filed only 1

2 projects

Project	Address	Type	Status	Filed	Latest permit	On the project	Description
B01440003 ↗	635 MAC DONOUGH STREET BROOKLYN	Alteration	Filed — no permit on record	08/17/2026	—	Filer SILBERMAYR Architecture PLLC	—
M01325086 ↗	420 EAST 54 STREET MANHATTAN	Alteration	Signed-off	12/19/2025	01/23/2026	Owner RIVER TOWER OWNER, LLC Contractor BLACK BULL BULDERS LLC Filer URBAN EXPEDITING LLC	GENERAL CONSTRUCTION WORK IN APT. 2901 TO CREATE A NEW BEDROOM AS PER THE PLANS FILED HEREWITH. NO CHANGE TO USE, EGRESS OR OCCUPANCY.