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Entity
One Medical
Tenant · filed under 2 names
3 projects with open permitsMANHATTAN · 15
4 buildings
15
Total Filings
15
Projects on File
4
Buildings Worked
3
Projects w/ Open Permits
Tenant
Primary Trade
Activity
Projects by first filing month15 projects all-time
0123Nov '20 · 1Dec '20 · 1Feb '21 · 2Mar '21 · 1Nov '21 · 1Apr '22 · 1Jun '22 · 2Jul '22 · 1Aug '22 · 1Jun '23 · 1Oct '23 · 1Nov '23 · 1Nov '25 · 120212022202320242025
bars = month · line = 3-mo average
Portfolio status
Browse projects →
Open permit320%
Signed off1173%
Filed only17%
By project type
Alteration14
Alteration CO1
Most active buildings
All buildings →
51 EAST 42 STREETMANHATTAN · 1 open · latest 12/12/2023
8 projects
919 3 AVENUEMANHATTAN · 1 open · latest 12/02/2022
4 projects
487 5 AVENUEMANHATTAN · latest 12/24/2020
2 projects
33 EAST 21 STREETMANHATTAN · 1 open · latest 09/08/2026
1 projects
Key relationships
Everyone →
Owners
11 projects
2 projects
1 projects
Filed under
One Medical13One Medical Group2
Identified by the contact ids of the people who file for the firm and by its email domain, not by matching names.
Most recent projects
All projects →
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M01310346 ↗33 EAST 21 STREET
MANHATTAN
AlterationPermit Issued11/07/202509/08/2026
Design CASE ENGINEERING, INC.
Owner WC 28 REALTY, LLC
Contractor RSM MAINTENANCE LLC
Filer MUNICIPAL BUILDING CONSULTANTS
Proposed: modification to the existing sprinkler system to include installation of 23 new sprinkler heads. No change of use, egress or occup…
M00844954 ↗51 EAST 42 STREET
MANHATTAN
AlterationPermit Issued11/01/202312/12/2023
Design ARMOUR UNSDERFER ENGINEERING INC, P
Owner SL GREEN REALTY CORP.
Contractor CLUNE CONSTRUCTION CO LP
Filer A1 EXPEDITING SERVICE CORP.
New Steel support for vertical lift & elevator support.
M00844925 ↗51 EAST 42 STREET
MANHATTAN
AlterationSigned-off10/18/202310/31/2023
Design CALLISONRTKL
Owner SL GREEN REALTY CORP
Contractor CLUNE CONSTRUCTION CO LP
Filer A1 EXPEDITING SERVICE CORP.
Removal & instillation of interior non load bearing partitions and related finishes.
M00844936 ↗51 EAST 42 STREET
MANHATTAN
AlterationSigned-off06/13/202310/20/2023
Design CASE ENGINEERING, INC.
Owner SL GREEN REALTY CORP
Contractor CLUNE CONSTRUCTION CO LP
Filer A1 EXPEDITING SERVICE CORP.
Modifications to existing HVAC/Ducts piping as per plans filed herewith. No change in use, egress or occupancy.
M00665504 ↗51 EAST 42 STREET
MANHATTAN
AlterationSigned-off04/19/202210/17/2023
Design MOHAMMAD AHEAD, PE
Contractor SIGNSTAR NYC
NON ILLUMINATED NON ADVERTISING ACCESSORY WALL SIGN - ONE MEDICAL. NO CHANGE OF USE, EGRESS OR OCCUPANCY.
M00769351 ↗919 3 AVENUE
MANHATTAN
Alteration COPermit Issued08/12/202212/02/2022
Design CALLISONRTKL
Owner SL GREEN REALTY CORP
Contractor SCHIMENTI CONSTRUCTION CO
Filer RIZZO GROUP
Filing to change occupancy from theater without restrictions (use group 8) to medical offices (use group 6) on the first floor and related p…
Counts cover all 15 projects (15 DOB NOW). Dated by first filing; BIS projects by first permit issuance.
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
CASE ENGINEERING, INC.702/11/2026
CALLISONRTKL502/11/2026
ARMOUR UNSDERFER ENGINEERING INC, P112/07/2023
KMB DESIGN GROUP, LLC112/23/2020
MOHAMMAD AHEAD, PE104/19/2022
SIMPSON GUMPERTZ & HEGER111/18/2021
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
CLUNE CONSTRUCTION CO LP310/18/2024
FOREMOST CONTRACTING & BU206/03/2022
SCHIMENTI CONSTRUCTION CO208/12/2022
BEDROCK PLBG. & HTG., INC106/27/2022
CS HUDSON INC111/11/2020
GEOFFREY A. LAGAS & ASSOC106/07/2021
HUDSON PLMBING & MCH, LLC102/11/2026
PA MECHANICAL SVCS LLC102/11/2026
RSM MAINTENANCE LLC102/11/2026
SIGNSTAR NYC104/19/2022
SPARTAKUS PLBG AND HEATIN112/23/2020
WELKIN FIRE PROTECTION LL111/18/2021
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
SL GREEN REALTY CORP1110/18/2024
ELK INVESTORS212/23/2020
WC 28 REALTY, LLC102/11/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
A1 EXPEDITING SERVICE CORP.610/18/2024
RIZZO GROUP408/12/2022
MUNICIPAL BUILDING CONSULTANTS102/11/2026
SPARC FIRE PROTECTION ENGINEERING111/18/2021
15 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 15Open permit 3Signed off 11Filed only 1
Any typeAlteration 14Alteration CO 1
15 projects
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M01310346 ↗33 EAST 21 STREET
MANHATTAN
AlterationPermit Issued11/07/202509/08/2026
Design CASE ENGINEERING, INC.
Owner WC 28 REALTY, LLC
Contractor RSM MAINTENANCE LLC
Filer MUNICIPAL BUILDING CONSULTANTS
Proposed: modification to the existing sprinkler system to include installation of 23 new sprinkler heads. No change of use, egress or occup…
M00844954 ↗51 EAST 42 STREET
MANHATTAN
AlterationPermit Issued11/01/202312/12/2023
Design ARMOUR UNSDERFER ENGINEERING INC, P
Owner SL GREEN REALTY CORP.
Contractor CLUNE CONSTRUCTION CO LP
Filer A1 EXPEDITING SERVICE CORP.
New Steel support for vertical lift & elevator support.
M00844925 ↗51 EAST 42 STREET
MANHATTAN
AlterationSigned-off10/18/202310/31/2023
Design CALLISONRTKL
Owner SL GREEN REALTY CORP
Contractor CLUNE CONSTRUCTION CO LP
Filer A1 EXPEDITING SERVICE CORP.
Removal & instillation of interior non load bearing partitions and related finishes.
M00844936 ↗51 EAST 42 STREET
MANHATTAN
AlterationSigned-off06/13/202310/20/2023
Design CASE ENGINEERING, INC.
Owner SL GREEN REALTY CORP
Contractor CLUNE CONSTRUCTION CO LP
Filer A1 EXPEDITING SERVICE CORP.
Modifications to existing HVAC/Ducts piping as per plans filed herewith. No change in use, egress or occupancy.
M00665504 ↗51 EAST 42 STREET
MANHATTAN
AlterationSigned-off04/19/202210/17/2023
Design MOHAMMAD AHEAD, PE
Contractor SIGNSTAR NYC
NON ILLUMINATED NON ADVERTISING ACCESSORY WALL SIGN - ONE MEDICAL. NO CHANGE OF USE, EGRESS OR OCCUPANCY.
M00769351 ↗919 3 AVENUE
MANHATTAN
Alteration COPermit Issued08/12/202212/02/2022
Design CALLISONRTKL
Owner SL GREEN REALTY CORP
Contractor SCHIMENTI CONSTRUCTION CO
Filer RIZZO GROUP
Filing to change occupancy from theater without restrictions (use group 8) to medical offices (use group 6) on the first floor and related p…
M00736026 ↗919 3 AVENUE
MANHATTAN
AlterationSigned-off06/27/202208/31/2022
Design CASE ENGINEERING, INC.
Owner SL GREEN REALTY
Contractor BEDROCK PLBG. & HTG., INC
Filer RIZZO GROUP
Installation of new plumbing fixtures and associated piping (One Medical) as per plans. No change to use, egress or occupancy.
M00735959 ↗919 3 AVENUE
MANHATTAN
AlterationSigned-off07/18/202208/26/2022
Design CASE ENGINEERING, INC.
Owner SL GREEN REALTY
Contractor SCHIMENTI CONSTRUCTION CO
Filer RIZZO GROUP
Installation of a new HVAC system (One Medical) as per plans. No change to use, egress or occupancy.
M00735677 ↗919 3 AVENUE
MANHATTAN
AlterationFiled — no permit on record06/28/2022—
Design CALLISONRTKL
Owner SL GREEN REALTY
Filer RIZZO GROUP
—
M00633241 ↗51 EAST 42 STREET
MANHATTAN
AlterationSigned-off11/18/202111/23/2021
Design SIMPSON GUMPERTZ & HEGER
Owner SL GREEN REALTY CORP.
Contractor WELKIN FIRE PROTECTION LL
Filer SPARC FIRE PROTECTION ENGINEERING
modification to the existing sprinkler system
M00451979 ↗51 EAST 42 STREET
MANHATTAN
AlterationSigned-off02/22/202104/07/2021
Design CALLISONRTKL
Owner SL GREEN REALTY CORP.
Contractor FOREMOST CONTRACTING & BU
Filer A1 EXPEDITING SERVICE CORP.
INTERIOR OFFICE RENOVATIONS AND MODIFICATIONS ON THE 1ST AND 2ND FLOOR. NO CHANGE TO USE, EGRESS OR OCCUPANCY.
M00451980 ↗51 EAST 42 STREET
MANHATTAN
AlterationSigned-off02/22/202104/06/2021
Design CASE ENGINEERING, INC.
Owner SL GREEN REALTY CORP.
Contractor FOREMOST CONTRACTING & BU
Filer A1 EXPEDITING SERVICE CORP.
Mechanical modifications as per plans filed herewith. No change to use, egress, or occupancy.
M00454510 ↗51 EAST 42 STREET
MANHATTAN
AlterationSigned-off03/08/202103/18/2021
Design CASE ENGINEERING, INC.
Owner SL GREEN REALTY CORP.
Contractor GEOFFREY A. LAGAS & ASSOC
Filer A1 EXPEDITING SERVICE CORP.
Plumbing modifications as per plans filed herewith. No change to use, egress, or occupancy.
M00440674 ↗487 5 AVENUE
MANHATTAN
AlterationSigned-off12/23/202012/24/2020
Design KMB DESIGN GROUP, LLC
Owner ELK INVESTORS
Contractor SUPERIOR PLUMBING & HEATI
Filer MUNICIPAL BUILDING CONSULTANTS
Plumbing work as per plans filed herewith
M00411646 ↗487 5 AVENUE
MANHATTAN
AlterationSigned-off11/11/202012/01/2020
Design CASE ENGINEERING, INC.
Owner ELK INVESTORS
Contractor CS HUDSON LLC
Filer MUNICIPAL BUILDING CONSULTANTS
Installation of mechanical equipment as per plans filed herewith. No change to use, egress or occupancy.
Click a row for this entity's own projects, plans and documents at that building.
BuildingFilingsMost Recent
33 EAST 21 STREET ↗102/11/2026
51 EAST 42 STREET ↗810/18/2024
919 3 AVENUE ↗408/12/2022
487 5 AVENUE ↗212/23/2020
▾Documents — 136 on file (BIS + DOB NOW)
▸Plans & Drawings23
▸DOB NOWPlans/Sketch14
09/03/2026M00633241-I1 · 51 EAST 42 STREETRequest digital key ↗
09/02/2026M00665504-I1 · 51 EAST 42 STREETRequest digital key ↗
09/02/2026M00736026-I1 · 919 3 AVENUERequest digital key ↗
Showing 3 of 14 on file for this type
▸DOB NOWPlans/Sketch - Mechanical Systems4
09/04/2026M00411646-I1 · 487 5 AVENUERequest digital key ↗
09/04/2026M00451980-P1 · 51 EAST 42 STREETRequest digital key ↗
09/04/2026M00451980-I1 · 51 EAST 42 STREETRequest digital key ↗
Showing 3 of 4 on file for this type
▸DOB NOWPlans/Sketch - Plumbing3
09/04/2026M00440674-I1 · 487 5 AVENUERequest digital key ↗
09/03/2026M00454510-P1 · 51 EAST 42 STREETRequest digital key ↗
09/03/2026M00454510-I1 · 51 EAST 42 STREETRequest digital key ↗
▸DOB NOWPlans/Sketch - General Construction2
09/04/2026M00451979-I1 · 51 EAST 42 STREETRequest digital key ↗
09/04/2026M00451979-P1 · 51 EAST 42 STREETRequest digital key ↗
▸Applications & Permits3
▸DOB NOWLPC Approval/Permit3
08/13/2026M01310346-S1 · 33 EAST 21 STREETOpen ↗
08/13/2026M01310346-S2 · 33 EAST 21 STREETOpen ↗
08/13/2026M01310346-I1 · 33 EAST 21 STREETOpen ↗
▸Seals & Professional Certifications76
▸DOB NOWProgress Inspector Seal & Signature36
09/27/2026M00454510-I1 · 51 EAST 42 STREETOpen ↗
09/27/2026M00454510-I1 · 51 EAST 42 STREETOpen ↗
09/27/2026M00454510-I1 · 51 EAST 42 STREETOpen ↗
Showing 3 of 36 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature24
09/04/2026M00451979-P1 · 51 EAST 42 STREETOpen ↗
09/04/2026M00451979-I1 · 51 EAST 42 STREETOpen ↗
09/03/2026M00454510-I1 · 51 EAST 42 STREETOpen ↗
Showing 3 of 24 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature16
09/26/2026M00451979-P1 · 51 EAST 42 STREETOpen ↗
09/02/2026M00844936-P1 · 51 EAST 42 STREETOpen ↗
09/02/2026M00735677-I1 · 919 3 AVENUEOpen ↗
Showing 3 of 16 on file for this type
▸Safety & Tenant Protection1
▸DOB NOWStreet Tree Checklist1
08/13/2026M00769351-I1 · 919 3 AVENUEOpen ↗
▸Environmental & Asbestos27
▸DOB NOWOER: Notice to Proceed11
09/04/2026M00451979-P1 · 51 EAST 42 STREETOpen ↗
09/04/2026M00451979-I1 · 51 EAST 42 STREETOpen ↗
09/03/2026M00454510-P1 · 51 EAST 42 STREETOpen ↗
Showing 3 of 11 on file for this type
▸DOB NOWDEP ACP-5: Asbestos Assessment Report10
08/15/2026M00769351-I1 · 919 3 AVENUEOpen ↗
08/13/2026M01310346-S1 · 33 EAST 21 STREETOpen ↗
08/13/2026M01310346-I1 · 33 EAST 21 STREETOpen ↗
Showing 3 of 10 on file for this type
▸DOB NOWOER: Notice of Satisfaction6
09/04/2026M00451979-I1 · 51 EAST 42 STREETOpen ↗
09/03/2026M00454510-I1 · 51 EAST 42 STREETOpen ↗
08/13/2026M00451980-I1 · 51 EAST 42 STREETOpen ↗
Showing 3 of 6 on file for this type
▸Energy Compliance4
▸DOB NOWEN2: As Built Energy Analysis.4
09/04/2026M00451979-I1 · 51 EAST 42 STREETOpen ↗
09/03/2026M00454510-I1 · 51 EAST 42 STREETOpen ↗
08/13/2026M00451980-I1 · 51 EAST 42 STREETOpen ↗
Showing 3 of 4 on file for this type
▸Other Documents2
▸DOB NOWProperty Ownership Certification1
08/15/2026M00769351-I1 · 919 3 AVENUEOpen ↗
▸DOB NOWProof of Historic Building1
08/13/2026M01310346-I1 · 33 EAST 21 STREETOpen ↗