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Design Firm
HELLYER LEWIS SMITH INC
Design
MANHATTAN · 4
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4 buildings
8
Total Filings
4
Projects on File
4
Buildings Worked
0
Projects w/ Open Permits
Design
Role
Activity
Projects by first filing month4 projects all-time
0112Jun '23 · 1Sep '23 · 1Nov '25 · 1Jan '26 · 1202420252026
bars = month · line = 3-mo average
Portfolio status
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Signed off4100%
By project type
Alteration4
Most active buildings
All buildings →
912 BROADWAYMANHATTAN · latest 11/12/2025
1 projects
1155 AVENUE OF THE AMERMANHATTAN · latest 01/24/2026
1 projects
450 PARK AVENUEMANHATTAN · latest 09/12/2023
1 projects
427 10 AVENUEMANHATTAN · latest 08/01/2023
1 projects
Key relationships
Everyone →
Design firms
1 projects
Filing representatives
2 projects
1 projects
People
All people →
Henry Lewislatest 05/26/2026
3 filings
Filed under
HELLYER LEWIS SMITH INC8
Identified by the contact ids of the people who file for the firm and by its email domain (hlsarchitecture.com), not by matching names.
Most recent projects
All projects →
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M01337825 ↗1155 AVENUE OF THE AMER
MANHATTAN
AlterationSigned-off01/08/202601/24/2026
Owner THE DURST ORGANIZATION
Contractor TURNER CONSTRUCTION COMPANY
Filer JAM CONSULTANTS, INC.
General construction for Liberty Mutual on 10th floor
M01273827 ↗912 BROADWAY
MANHATTAN
AlterationSigned-off11/03/202511/12/2025
Contractor HYATT INTERIORS
Filer JAM CONSULTANTS, INC.
Demising the space at the main and service elevators to secure the suite on the fourth floor.. No change to use, egress or occupancy.
M00922907 ↗450 PARK AVENUE
MANHATTAN
AlterationSigned-off09/06/202309/12/2023
Owner SL GREEN REALTY CORP.
Contractor CONCEPT CONSTRUCTION SERV
Filer A1 EXPEDITING SERVICE CORP.
Interior renovation no change to use egress or occupancy as per plans herewith.
M00884298 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off06/28/202308/01/2023
Contractor TURNER CONSTRUCTION COMPANY
Interior renovation no change to use egress or occupancy as per plans herewith
Counts cover all 4 projects (4 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
Henry Lewis305/26/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
ROBERT DERECTOR ASSOCIATES111/05/2025
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
TURNER CONSTRUCTION COMPA205/29/2026
CONCEPT CONSTRUCTION SERV109/06/2023
HYATT INTERIORS INC111/05/2025
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
SL GREEN REALTY CORP109/06/2023
THE DURST ORGANIZATION105/29/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
JAM CONSULTANTS, INC.205/29/2026
A1 EXPEDITING SERVICE CORP.109/06/2023
4 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 4Signed off 4
4 projects
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M01337825 ↗1155 AVENUE OF THE AMER
MANHATTAN
AlterationSigned-off01/08/202601/24/2026
Owner THE DURST ORGANIZATION
Contractor TURNER CONSTRUCTION COMPANY
Filer JAM CONSULTANTS, INC.
General construction for Liberty Mutual on 10th floor
M01273827 ↗912 BROADWAY
MANHATTAN
AlterationSigned-off11/03/202511/12/2025
Contractor HYATT INTERIORS
Filer JAM CONSULTANTS, INC.
Demising the space at the main and service elevators to secure the suite on the fourth floor.. No change to use, egress or occupancy.
M00922907 ↗450 PARK AVENUE
MANHATTAN
AlterationSigned-off09/06/202309/12/2023
Owner SL GREEN REALTY CORP.
Contractor CONCEPT CONSTRUCTION SERV
Filer A1 EXPEDITING SERVICE CORP.
Interior renovation no change to use egress or occupancy as per plans herewith.
M00884298 ↗427 10 AVENUE
MANHATTAN
AlterationSigned-off06/28/202308/01/2023
Contractor TURNER CONSTRUCTION COMPANY
Interior renovation no change to use egress or occupancy as per plans herewith
Click a row for this entity's own projects, plans and documents at that building.
BuildingFilingsMost Recent
1155 AVENUE OF THE AMER ↗205/26/2026
450 PARK AVENUE ↗108/22/2023
427 10 AVENUE ↗4—
912 BROADWAY ↗1—
▾Documents — 37 on file (BIS + DOB NOW)
▸Plans & Drawings8
▸DOB NOWPlans/Sketch8
08/29/2026M00922907-I1 · 450 PARK AVENUERequest digital key ↗
08/29/2026M00884298-I1 · 427 10 AVENUERequest digital key ↗
08/29/2026M00884298-P1 · 427 10 AVENUERequest digital key ↗
Showing 3 of 8 on file for this type
▸Applications & Permits2
▸DOB NOWLPC Approval/Permit2
08/13/2026M01273827-S1 · 912 BROADWAYOpen ↗
08/13/2026M01273827-I1 · 912 BROADWAYOpen ↗
▸Seals & Professional Certifications17
▸DOB NOWDPL-1: Design Professional Seal & Signature8
08/29/2026M00884298-P2 · 427 10 AVENUEOpen ↗
08/29/2026M00884298-I1 · 427 10 AVENUEOpen ↗
08/29/2026M00884298-P1 · 427 10 AVENUEOpen ↗
Showing 3 of 8 on file for this type
▸DOB NOWProgress Inspector Seal & Signature6
09/23/2026M00884298-P2 · 427 10 AVENUEOpen ↗
09/23/2026M00922907-I1 · 450 PARK AVENUEOpen ↗
08/28/2026M01337825-I1 · 1155 AVENUE OF THE AMEROpen ↗
Showing 3 of 6 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature3
08/28/2026M01337825-I1 · 1155 AVENUE OF THE AMEROpen ↗
08/27/2026M01273827-S1 · 912 BROADWAYOpen ↗
08/24/2026M01337825-P1 · 1155 AVENUE OF THE AMEROpen ↗
▸Environmental & Asbestos9
▸DOB NOWDEP ACP-5: Asbestos Assessment Report5
08/17/2026M01337825-P1 · 1155 AVENUE OF THE AMEROpen ↗
08/13/2026M00922907-I1 · 450 PARK AVENUEOpen ↗
08/13/2026M01273827-S1 · 912 BROADWAYOpen ↗
Showing 3 of 5 on file for this type
▸DOB NOWOER: Notice to Proceed3
08/13/2026M00884298-P2 · 427 10 AVENUEOpen ↗
08/13/2026M00884298-P1 · 427 10 AVENUEOpen ↗
08/13/2026M00884298-I1 · 427 10 AVENUEOpen ↗
▸DOB NOWOER: Notice of Satisfaction1
08/13/2026M00884298-I1 · 427 10 AVENUEOpen ↗
▸Other Documents1
▸DOB NOWProof of Historic Building1
08/13/2026M01273827-I1 · 912 BROADWAYOpen ↗