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Design Firm
SEBASTIAN QUINN
Design · filed under 2 names
8 projects with open permitsMANHATTAN · 29BROOKLYN · 7BRONX · 5
21 buildings
77
Total Filings
41
Projects on File
21
Buildings Worked
8
Projects w/ Open Permits
Design
Role
Activity
Projects by first filing month41 projects all-time
0246Aug '19 · 1Nov '19 · 1Aug '21 · 1Oct '21 · 1Feb '22 · 3Apr '22 · 2Jun '22 · 2Aug '22 · 1Nov '22 · 2Jul '23 · 1Sep '23 · 2Dec '23 · 1Feb '24 · 1Jun '24 · 1Jul '24 · 1Nov '24 · 1Dec '24 · 2Jan '25 · 1Mar '25 · 1Apr '25 · 2Sep '25 · 2Oct '25 · 1Nov '25 · 1Jan '26 · 1Mar '26 · 5Apr '26 · 1May '26 · 1Jun '26 · 12020202120222023202420252026
bars = month · line = 3-mo average
Portfolio status
Browse projects →
Open permit820%
Signed off2254%
Filed only1127%
By project type
Alteration28
No Work9
Alteration CO4
Most active buildings
All buildings →
1949 ADAM C POWELL BLVDMANHATTAN · 2 open · latest 07/31/2026
6 projects
810 RIVER AVENUEBRONX · latest 08/07/2025
5 projects
501 10 AVENUEMANHATTAN · 3 open · latest 05/21/2026
3 projects
1361 AMSTERDAM AVENUEMANHATTAN · 1 open · latest 02/29/2024
3 projects
61 WEST STREETBROOKLYN · latest 06/08/2026
3 projects
52 THOMAS STREETMANHATTAN · 1 open · latest 05/13/2025
2 projects
Key relationships
Everyone →
Filing representatives
26 projects
Contractors
SEBASTIAN QUINNlatest 05/27/2026
48 filings
Filed under
SEBASTIAN QUINN74Sebastian Quinn Architect PLLC3
Identified by the contact ids of the people who file for the firm and by its email domain (sebastianquinn.com), not by matching names.
Most recent projects
All projects →
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M01292248 ↗423 WEST 127 STREET
MANHATTAN
Alteration COPermit Issued11/26/202508/14/2026Filing to convert the use and occupancy of the first floor. The proposed general construction work includes minor renovation work.
M01403582 ↗1949 ADAM C POWELL BLVD
MANHATTAN
Alteration COPermit Issued05/19/202607/31/2026Split one of the existing apartments on the fourth floor into two apartments. Remove and install minor interior non- bearing partitions, fin…
B01412696 ↗61 WEST STREET
BROOKLYN
No WorkFiled — no permit on record06/08/2026———
M01367580 ↗501 10 AVENUE
MANHATTAN
AlterationPermit Issued03/20/202605/21/2026Filing for the removal of the interior partition work, finishes, the package conveyor system. Repair and infill the area of the conveyor sys…
M01377021 ↗1949 ADAM C POWELL BLVD
MANHATTAN
AlterationSigned-off03/26/202604/17/2026Filing for the interior demolition in conjunction with Alt-CO . No change in use, egress or occupancy.
B01385881 ↗2 52 STREET
BROOKLYN
No WorkFiled — no permit on record04/13/2026———
Counts cover all 41 projects (41 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
SEBASTIAN QUINN4805/27/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
MG ENGINEERING D.P.C.304/24/2024
EJZ ENGINEERING210/28/2025
BLUE SKY DESIGN, INC.107/11/2023
BR+A CONSULTING ENGINEERS112/10/2024
DE NARDIS ENGINEERING, LLC112/10/2024
ENGINEERING SOLUTIONS105/29/2026
JACK GREEN ASSOCIATES103/01/2023
SKYLINE ENGINEERING, LLC110/30/2023
STARK CONSULTING, LLC104/30/2025
STONE ENGINEERING& ARCHITECTURE DPC104/30/2025
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
MIKOT CONSTRUCTION INC805/29/2026
A.M.N. CORPORATION705/29/2026
T D CONTRACTOR CORP504/24/2024
AMN SPRINKLER INC304/24/2024
ROYAL HVAC SYSTEMS INC304/24/2024
VOLK INDUSTRIAL SERVICES303/20/2026
COCOZZA GROUP LLC204/30/2025
VALIANT DESIGN BUILD INC210/28/2025
A M B MECHANICAL INC110/30/2023
ALL MEDIA SERVICES, INC103/05/2025
APOLLO PLBG & HTG INC110/18/2022
CROSS CONTRACTING INC107/31/2024
J. CAIAZZO PLBG & HTG COR104/30/2025
LW INTERIOR REMODELING IN110/28/2025
M. MELNICK & COMPANY INC110/30/2023
MALIK GENERAL CONSTR CORP111/05/2024
MNR GROUP INC101/21/2025
RIVERDALE HOME IMPROVEMEN105/18/2022
TOP PLUMBING AND HEATING110/28/2025
WYNNE PLBG & HEATING CORP110/28/2025
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
160 WEST 118TH STREET CORP.605/29/2026
810 RIVER PARTNERS LLC410/28/2025
ESSEX CAPITAL PARTNERS303/20/2026
JANUS VII LLC204/24/2024
Janus Property211/26/2025
1351 NEIGHBORHOOD AMSTERDAM AVENUE111/11/2022
HARLEM GREEN LLC102/01/2023
HUBB NYC PROPERTIES LLC104/30/2025
KCL REALTY106/24/2024
KERRISDALE REAL ESTATE111/05/2024
LANDLORD111/07/2022
SUTTON MANAGEMENT CORP.103/05/2025
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
M.HASHAS,INC2605/29/2026
41 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 41Open permit 8Signed off 22Filed only 11
Any typeAlteration 28No Work 9Alteration CO 4
41 projects
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M01292248 ↗423 WEST 127 STREET
MANHATTAN
Alteration COPermit Issued11/26/202508/14/2026Filing to convert the use and occupancy of the first floor. The proposed general construction work includes minor renovation work.
M01403582 ↗1949 ADAM C POWELL BLVD
MANHATTAN
Alteration COPermit Issued05/19/202607/31/2026Split one of the existing apartments on the fourth floor into two apartments. Remove and install minor interior non- bearing partitions, fin…
B01412696 ↗61 WEST STREET
BROOKLYN
No WorkFiled — no permit on record06/08/2026———
M01367580 ↗501 10 AVENUE
MANHATTAN
AlterationPermit Issued03/20/202605/21/2026Filing for the removal of the interior partition work, finishes, the package conveyor system. Repair and infill the area of the conveyor sys…
M01377021 ↗1949 ADAM C POWELL BLVD
MANHATTAN
AlterationSigned-off03/26/202604/17/2026Filing for the interior demolition in conjunction with Alt-CO . No change in use, egress or occupancy.
B01385881 ↗2 52 STREET
BROOKLYN
No WorkFiled — no permit on record04/13/2026———
M01367502 ↗501 10 AVENUE
MANHATTAN
AlterationPermit Issued03/20/202603/26/2026Filing for the removal of interior partitions, equipment, package conveyance system, and finishes. No change in use, egress or occupancy.
M01367567 ↗501 10 AVENUE
MANHATTAN
AlterationPermit Issued03/20/202603/26/2026Filing for the removal of the interior partition work, storage units and the finishes. No change in use, egress or occupancy.
M01377018 ↗1949 ADAM C POWELL BLVD
MANHATTAN
Alteration COFiled — no permit on record03/25/2026——
B01345134 ↗2 52 STREET
BROOKLYN
No WorkFiled — no permit on record01/15/2026———
M01293565 ↗423 WEST 127 STREET
MANHATTAN
AlterationSigned-off10/28/202511/03/2025Install minor partition work to install a bathroom.
B01292217 ↗61 WEST STREET
BROOKLYN
No WorkFiled — no permit on record09/30/2025———
B01282293 ↗61 WEST STREET
BROOKLYN
No WorkFiled — no permit on record09/05/2025———
X01168485 ↗810 RIVER AVENUE
BRONX
AlterationSigned-off04/16/202508/07/2025Install minor partition work and create a new opening at non bearing partition to install a new door ,and a ramp for convenience between s…
M01186076 ↗52 THOMAS STREET
MANHATTAN
AlterationPermit Issued03/05/202505/13/2025Filing for minor interior renovation of an existing restaurant. Remove and install minor interior partition work, finishes etc. Install bath…
M01166302 ↗130 WEST 30 STREET
MANHATTAN
AlterationSigned-off01/21/202504/22/2025
Contractor MNR GROUP INC
Provide new guard rail at equipment access areas, and modify select existing guard rails . No change in use, egress or occupancy.
M01198036 ↗52 THOMAS STREET
MANHATTAN
No WorkFiled — no permit on record04/04/2025———
X01153683 ↗810 RIVER AVENUE
BRONX
AlterationSigned-off12/24/202403/17/2025Install mechanical and ventilation work in conjunction with the tenant fit out .
X01153255 ↗810 RIVER AVENUE
BRONX
AlterationSigned-off12/24/202403/06/2025Install mechanical and ventilation work in conjunction with the tenant fit out .
B01134575 ↗1524 JEFFERSON AVENUE
BROOKLYN
AlterationSigned-off11/05/202402/19/2025Filing to remedy the ECB violations. Remove portable AC unit and infill existing opening at exterior facade.
M00902272 ↗167 CHRYSTIE STREET
MANHATTAN
AlterationSigned-off07/26/202311/14/2024Infill existing slab opening, including replacement of non-load bearing partition with load bearing wall in conjunction with the tenant fit …
X01083855 ↗810 RIVER AVENUE
BRONX
AlterationSigned-off07/31/202410/17/2024Filing to extend the corridor. Remove and install minor interior partition work. no change in use, egress or occupancy.
B01065856 ↗67 METROPOLITAN AVENUE
BROOKLYN
No WorkFiled — no permit on record06/14/2024———
M01006434 ↗300 SPRING STREET
MANHATTAN
AlterationSigned-off02/20/202404/17/2024Filing for renovation of existing eating drinking establishment.
M00672914 ↗1361 AMSTERDAM AVENUE
MANHATTAN
AlterationPermit Issued02/18/202202/29/2024Install new storefronts at the rear.
M00912417 ↗1361 AMSTERDAM AVENUE
MANHATTAN
AlterationSigned-off09/19/202302/29/2024Install plumbing work in conjunction with the non- production research laboratory tenant fit out
M00955447 ↗450 WEST 126 STREET
MANHATTAN
AlterationFiled — no permit on record12/04/2023——
M00935806 ↗167 CHRYSTIE STREET
MANHATTAN
No WorkFiled — no permit on record09/22/2023———
X00601734 ↗810 RIVER AVENUE
BRONX
AlterationSigned-off10/14/202107/08/2023Install minor partition and finishes for tenant 's fit out.
M00789075 ↗461 WEST 126 STREET
MANHATTAN
AlterationSigned-off08/18/202212/23/2022Install air conditioning system and perimeter radiators in conjunction with the tenant fit out.
M08040535 ↗1951 ADAM C POWELL BLVD
MANHATTAN
AlterationSigned-off11/18/202212/23/2022Filing to install
M08038241 ↗1351 AMSTERDAM AVENUE
MANHATTAN
AlterationSigned-off11/11/202212/09/2022Filing to install temporary construction fence .
M00748091 ↗1949 ADAM C POWELL BLVD
MANHATTAN
Alteration COPermit Issued06/11/202210/25/2022Split one of the existing apartments on the second floor into two apartments. Remove and install minor interior non bearing partitions, fini…
M00757774 ↗135 WEST 138 STREET
MANHATTAN
AlterationSigned-off06/15/202207/11/2022
Owner LANDLORD
Repair existing facade and repair/replace existing cornice as needed. Replace moldings.
M00725523 ↗255 WEST 84 STREET
MANHATTAN
AlterationSigned-off04/30/202205/27/2022Filing for the plumbing work in conjunction with the interior renovation of the apartment#1C.
M00725520 ↗255 WEST 84 STREET
MANHATTAN
AlterationSigned-off04/27/202205/19/2022Filing for minor renovation in apartment #1C. Remove and install minor interior partitions, finishes ,etc.
M00673419 ↗1949 ADAM C POWELL BLVD
MANHATTAN
AlterationSigned-off02/08/202203/21/2022Filing to renovate the existing store. Remove and install minor interior partition work, finishes. Patch and repair concrete flooring. No ch…
M00673427 ↗1949 ADAM C POWELL BLVD
MANHATTAN
AlterationSigned-off02/08/202203/18/2022Filing plumbing work in conjunction with tenant fit out.
M00575351 ↗1361 AMSTERDAM AVENUE
MANHATTAN
AlterationSigned-off08/12/202109/08/2021Remove and install ductwork and associated piping. Relocate existing air handlers and the condensing unit. Install ductwork and fan for fres…
M00260458 ↗382 LAFAYETTE STREET
MANHATTAN
AlterationSigned-off11/14/201912/05/2019PLUMBING WORK TYPE FILED IN CONJUNCTION WITH ALT 2 #123879552
M00209382 ↗105 ELDRIDGE STREET
MANHATTAN
No WorkFiled — no permit on record08/27/2019———
Scope of Work
HVAC — 1 project · most recent 12/10/2024
Associated Ducts and Piping Generators Heating and Air Conditioning Systems Refrigeration Systems Ventilation Systems
Sprinkler / Standpipe — 2 projects · most recent 04/30/2025
Sprinkler System
Plumbing — 5 projects · most recent 05/29/2026
Gas Water/Sanitary
Structural — 5 projects · most recent 05/29/2026
Steel Masonry
▾Documents — 567 on file (BIS + DOB NOW)
▸Plans & Drawings111
▸DOB NOWPlans/Sketch101
Showing 3 of 101 on file for this type
▸DOB NOWPlans/Sketch - Temporary Place of Assembly6
08/20/2026B01282293-I1 · 61 WEST STREETRequest digital key ↗
08/20/2026B01292217-I1 · 61 WEST STREETRequest digital key ↗
Showing 3 of 6 on file for this type
▸DOB NOWPlans/Sketch - Place of Assembly3
▸DOB NOWPlans/Sketch - Plumbing1
▸Applications & Permits8
▸DOB NOWLPC Approval/Permit8
09/02/2026M00725520-I1 · 255 WEST 84 STREETOpen ↗
08/13/2026M00725523-P1 · 255 WEST 84 STREETOpen ↗
08/13/2026M00725523-I1 · 255 WEST 84 STREETOpen ↗
Showing 3 of 8 on file for this type
▸Zoning, Tax Lot & Property Records1
▸DOB NOWHouse Number Verification: TOPO Stamp1
08/20/2026M01292248-I1 · 423 WEST 127 STREETOpen ↗
▸Seals & Professional Certifications351
▸DOB NOWProgress Inspector Seal & Signature155
09/30/2026M00748091-P8 · 1949 ADAM C POWELL BLVDOpen ↗
09/30/2026M00748091-P8 · 1949 ADAM C POWELL BLVDOpen ↗
09/30/2026M00748091-P8 · 1949 ADAM C POWELL BLVDOpen ↗
Showing 3 of 155 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature109
09/05/2026M00209382-I1 · 105 ELDRIDGE STREETOpen ↗
09/03/2026M00575351-S1 · 1361 AMSTERDAM AVENUEOpen ↗
09/03/2026M00575351-S3 · 1361 AMSTERDAM AVENUEOpen ↗
Showing 3 of 109 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature87
09/30/2026M00748091-P8 · 1949 ADAM C POWELL BLVDOpen ↗
09/22/2026M00789075-S1 · 461 WEST 126 STREETOpen ↗
09/19/2026M01006434-I1 · 300 SPRING STREETOpen ↗
Showing 3 of 87 on file for this type
▸Safety & Tenant Protection14
▸DOB NOWStreet Tree Checklist10
08/13/2026M01377018-I1 · 1949 ADAM C POWELL BLVDOpen ↗
Showing 1 of 10 on file for this type
▸DOB NOWCertificate of No Harassment3
08/13/2026M01367580-I1 · 501 10 AVENUEOpen ↗
08/13/2026M01367567-I1 · 501 10 AVENUEOpen ↗
08/13/2026M01367502-I1 · 501 10 AVENUEOpen ↗
▸DOB NOWTenant Protection Plan1
08/13/2026M00260458-I1 · 382 LAFAYETTE STREETOpen ↗
▸Environmental & Asbestos60
▸DOB NOWDEP ACP-5: Asbestos Assessment Report42
09/03/2026M00575351-S2 · 1361 AMSTERDAM AVENUEOpen ↗
09/03/2026M00575351-S1 · 1361 AMSTERDAM AVENUEOpen ↗
09/03/2026M00575351-I1 · 1361 AMSTERDAM AVENUEOpen ↗
Showing 3 of 42 on file for this type
▸DOB NOWOER: Notice to Proceed15
08/20/2026M01292248-I1 · 423 WEST 127 STREETOpen ↗
08/18/2026M01367580-I1 · 501 10 AVENUEOpen ↗
08/13/2026M01293565-I1 · 423 WEST 127 STREETOpen ↗
Showing 3 of 15 on file for this type
▸DOB NOWDEP ACP-20/ACP-21: Asbestos Project Conditional Completion Form/Asbestos Project Completion Form3
08/30/2026M00748091-S1 · 1949 ADAM C POWELL BLVDOpen ↗
Showing 1 of 3 on file for this type
▸Energy Compliance10
▸DOB NOWEN2: As Built Energy Analysis9
08/13/2026M00725520-I1 · 255 WEST 84 STREETOpen ↗
08/13/2026M00673419-I1 · 1949 ADAM C POWELL BLVDOpen ↗
Showing 2 of 9 on file for this type
▸DOB NOWPreliminary Commissioning Report Certification1
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 1 on file for this type
▸Other Documents12
▸DOB NOWProperty Ownership Certification10
08/18/2026M01377018-I1 · 1949 ADAM C POWELL BLVDOpen ↗
Showing 1 of 10 on file for this type
▸DOB NOWAlternate Plan 21
08/14/2026M00209382-I1 · 105 ELDRIDGE STREETOpen ↗
▸DOB NOWAlternate Plan 11
08/14/2026M00209382-I1 · 105 ELDRIDGE STREETOpen ↗