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Contractor
A-1 EXPERT INSTALLATION
General Contractor
3 projects with open permitsMANHATTAN · 16BRONX · 3QUEENS · 2
15 of 16 buildings mapped
25
Total Filings
22
Projects on File
10
Buildings Worked
3
Projects w/ Open Permits
General Contractor
Primary Trade
Activity
Projects by first filing month22 projects all-time
0134Feb '10 · 1Apr '10 · 1Jan '14 · 1Oct '14 · 1Jul '16 · 1May '19 · 1Aug '19 · 1Dec '19 · 1Jan '20 · 2Jun '21 · 3Jun '22 · 1Jan '23 · 1Dec '23 · 1May '24 · 1Jun '24 · 2Jan '26 · 1Feb '26 · 1Jun '26 · 12011201220132014201520162017201820192020202120222023202420252026
bars = month · line = 3-mo average
Portfolio status
Browse projects →
Open permit314%
Signed off1255%
Other status732%
By project type
Alteration15
Most active buildings
All buildings →
50 EAST 57 STREETMANHATTAN · 1 open · latest 09/24/2021
3 projects
77 WARREN STREETMANHATTAN · latest 10/23/2014
2 projects
555 WEST 18 STREETMANHATTAN · latest 06/20/2024
2 projects
1240 MADISON AVENUEMANHATTAN · 1 open · latest 09/04/2024
2 projects
2850 3 AVENUEBRONX · latest 06/12/2026
2 projects
366 WEST 15 STREETMANHATTAN · latest 01/24/2020
1 projects
Key relationships
Everyone →
Most recent projects
All projects →
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
X01350036 ↗2850 3 AVENUE
BRONX
AlterationSigned-off02/03/202606/12/2026Mechanical Work Associated with the renovation of Article 31 Medical Office Space. Work to install (9) VAV Boxes and (2) Rooftop Exhaust fan…
Q01243850 ↗58-50 52 AVENUE
QUEENS
AlterationPermit Issued06/02/202606/03/2026HEREWITH FILING FOR NEW MECHANICAL SYSTEMS AS PER PLANS. NO CHANGE TO USE, OCCUPANCY, OR EGRESS UNDER THIS APPLICATION.
X01350049 ↗2850 3 AVENUE
BRONX
AlterationSigned-off01/30/202604/14/2026Mechanical work associated with the renovation of Article 28, Urgent Care Space, Medical Office Space. No change in use, egress, or occupanc…
M01046564 ↗1240 MADISON AVENUE
MANHATTAN
AlterationSigned-off05/28/202409/04/2024PLUMBING WORK FILED IN CONJUNCTION WITH DOB NOW GC. NO CHANGE TO USE, OCCUPANCY OR EGRESS,
M01057987 ↗555 WEST 18 STREET
MANHATTAN
AlterationSigned-off06/14/202406/20/2024
Owner IAC INC.
Filing herewith interior renovation inclusive of non-load bearing partitions, millwork, finishes, ceilings, lighting, etc. on the 3rd floor …
M01064645 ↗555 WEST 18 STREET
MANHATTAN
AlterationSigned-off06/18/202406/20/2024
Owner IAC INC.
FILING TO INSTALL PIPE AND DUCT WORK AS PER PLANS FILED. NO CHANGE TO USE, EGRESS, OR OCCUPANCY.
Counts cover all 22 projects (15 DOB NOW + 7 legacy BIS). 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
GREGORY L SINGER, PE, PLLC206/02/2026
JACK GREEN ASSOCIATES202/19/2025
SGM ENGINEERING207/16/2026
ALL CITY ENGINEERING, P.C.108/17/2023
ANDREW FETHES ARCHITECT104/15/2025
BECHT ENGINEERING BT, INC.106/24/2021
CHARLES MATZ ARCHITECT106/24/2021
EME GROUP/SALAS O'BRIEN106/18/2024
ETHELIND COBLIN ARCHITECT DPC102/19/2025
INTERIOR ARCHITECTS109/10/2024
JAREK TRESKO ARCHITECT, LLC101/24/2020
VIKATOS ARCHITECT PC110/05/2023
XU CONSULTING ENGINEERING P.C.106/23/2021
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
SGC CONTRACTING CORP204/15/2025
D ARMENTI BUILDERS INC110/05/2023
LIPSKY & ROSENTHAL, INC110/05/2023
LS PLUMBING CORP104/15/2025
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
ASTOR TERRACE CONDOMINIUM204/15/2025
IAC INC.209/10/2024
T&A HOLDINGS, LC206/24/2021
1412 MANAGEMENT LLC108/17/2023
ISJ MANAGEMENT CORP.107/16/2026
LEE & ASSOCIATES MGT LLC108/07/2019
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
METROPOLIS GROUP INC209/10/2024
RIZZO GROUP206/24/2021
ANTHONY MORALI ARCHITECT PLLC102/19/2025
CLARKE CONSTRUCTION CONSULTANTS104/15/2025
CONVERSANO ASSOCIATES, INC.107/16/2026
15 DOB NOW projects + 7 legacy BIS 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 22Open permit 3Signed off 12Other status 7
22 projects
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
X01350036 ↗2850 3 AVENUE
BRONX
AlterationSigned-off02/03/202606/12/2026Mechanical Work Associated with the renovation of Article 31 Medical Office Space. Work to install (9) VAV Boxes and (2) Rooftop Exhaust fan…
Q01243850 ↗58-50 52 AVENUE
QUEENS
AlterationPermit Issued06/02/202606/03/2026HEREWITH FILING FOR NEW MECHANICAL SYSTEMS AS PER PLANS. NO CHANGE TO USE, OCCUPANCY, OR EGRESS UNDER THIS APPLICATION.
X01350049 ↗2850 3 AVENUE
BRONX
AlterationSigned-off01/30/202604/14/2026Mechanical work associated with the renovation of Article 28, Urgent Care Space, Medical Office Space. No change in use, egress, or occupanc…
M01046564 ↗1240 MADISON AVENUE
MANHATTAN
AlterationSigned-off05/28/202409/04/2024PLUMBING WORK FILED IN CONJUNCTION WITH DOB NOW GC. NO CHANGE TO USE, OCCUPANCY OR EGRESS,
M01057987 ↗555 WEST 18 STREET
MANHATTAN
AlterationSigned-off06/14/202406/20/2024
Owner IAC INC.
Filing herewith interior renovation inclusive of non-load bearing partitions, millwork, finishes, ceilings, lighting, etc. on the 3rd floor …
M01064645 ↗555 WEST 18 STREET
MANHATTAN
AlterationSigned-off06/18/202406/20/2024
Owner IAC INC.
FILING TO INSTALL PIPE AND DUCT WORK AS PER PLANS FILED. NO CHANGE TO USE, EGRESS, OR OCCUPANCY.
M00968475 ↗1240 MADISON AVENUE
MANHATTAN
AlterationPermit Issued12/12/202301/30/2024Renovation to lobby. Partition, finish and fixture work. No change to use, egress or occupancy.
M08019260 ↗941 PARK AVENUE
MANHATTAN
AlterationSigned-off01/25/202310/26/2023PROPOSED PLUMBING WORK AT DOCTOR'S OFFICE AS PER PLANS OCCUPANCY CLASS: OLD CODE RESIDENTIAL AND CONSTRUCTION CLASSIFICATION: CLASS 1 FIREPR…
M00721319 ↗1412 BROADWAY
MANHATTAN
AlterationSigned-off06/17/202208/23/2023Provide new Mechanical System for Commercial Space, in conjunction with M00721565, M00721589. No change in use, egress, or occupancy.
M00526092 ↗50 EAST 57 STREET
MANHATTAN
AlterationPermit Issued06/23/202109/24/2021Structural modifications to the 7th floor and Roof as per plans filed herewith. No change to use, egress or occupancy.
M00525297 ↗50 EAST 57 STREET
MANHATTAN
AlterationSigned-off06/24/202109/23/2021General construction on the 7th floor and Roof as per plans filed herewith. No change to use, egress occupancy.
M00525336 ↗50 EAST 57 STREET
MANHATTAN
AlterationSigned-off06/24/202109/23/2021Mechanical modifications to the 7th floor and roof as per plans filed herewith. No change to use, egress or occupancy.
M00269368 ↗785 PARK AVENUE
MANHATTAN
AlterationSigned-off01/24/202007/16/2020INTERIOR WORK Mechanical and minor exterior work for the PTAC unit in the THRU WALL OPENING IN EXISTING APARTMENT 10C ON THE 10TH FLOOR. .…
M00246065 ↗831 3 AVENUE
MANHATTAN
AlterationSigned-off12/17/201902/28/2020REPLACEMENT OF 20 TON ROOFTOP AC UNIT. NO CHANGE TO USE, OCCUPANCY, OR EGRESS.
M00197180 ↗875 AVENUE OF THE AMER
MANHATTAN
AlterationSigned-off08/07/201902/14/2020Installation of mechanical units as per plans filed herewith. No change to use, egress occupancy.
123264680BIS366 WEST 15 STREET
MANHATTAN
—ISSUED01/24/202001/24/2020—MH
421893758BIS217-14 HEMPSTEAD AVENUE
QUEENS
—ISSUED05/02/201905/23/2019—MH, OT, PL
122696975BIS310 RIVERSIDE DRIVE
MANHATTAN
—ISSUED07/22/201607/29/2016—MH, PL
320100029BIS2544 FLATBUSH AVENUE
BROOKLYN
—ISSUED02/12/201008/12/2015—MH, OT, PL
121663636BIS77 WARREN STREET
MANHATTAN
—ISSUED01/21/201410/23/2014—MH, OT, PL
121941042BIS77 WARREN STREET
MANHATTAN
—ISSUED10/21/201410/21/2014—MH
220036609BIS5500 BROADWAY
BRONX
—ISSUED04/09/201004/09/2010—MH
Click a row for this entity's own projects, plans and documents at that building.
BuildingFilingsMost Recent
2850 3 AVENUE ↗207/08/2026
58-50 52 AVENUE ↗107/08/2026
875 AVENUE OF THE AMER ↗107/08/2026
555 WEST 18 STREET ↗207/08/2026
50 EAST 57 STREET ↗507/08/2026
1240 MADISON AVENUE ↗407/08/2026
1412 BROADWAY ↗107/08/2026
785 PARK AVENUE ↗303/21/2026
941 PARK AVENUE ↗303/21/2026
831 3 AVENUE ↗303/21/2026
▾Documents — 361 on file (BIS + DOB NOW)
▸Plans & Drawings27
▸DOB NOWPlans/Sketch24
08/29/2026M00721319-I1 · 1412 BROADWAYRequest digital key ↗
Showing 3 of 24 on file for this type
▸DOB NOWPlans/Sketch - Mechanical Systems3
▸Applications & Permits46
▸BISPLAN / WORK APPROVAL APPLICATION18
09/29/2020421893758 · 217-14 HEMPSTEAD AVENUEOpen ↗
05/29/2015320100029 · 2544 FLATBUSH AVENUEOpen ↗
08/21/2014121663636 · 77 WARREN STREETOpen ↗
Showing 3 of 18 on file for this type
▸BISWORK PERMIT APPLICATION17
08/08/2016122696975 · 310 RIVERSIDE DRIVEOpen ↗
08/14/2015320100029 · 2544 FLATBUSH AVENUEOpen ↗
10/28/2014121663636 · 77 WARREN STREETOpen ↗
Showing 3 of 17 on file for this type
▸DOB NOWLPC Approval/Permit11
08/13/2026M00269368-I1 · 785 PARK AVENUEOpen ↗
Showing 1 of 11 on file for this type
▸Seals & Professional Certifications140
▸DOB NOWProgress Inspector Seal & Signature58
09/30/2026M00525336-I1 · 50 EAST 57 STREETOpen ↗
09/30/2026M00525336-I1 · 50 EAST 57 STREETOpen ↗
09/01/2026M01046564-I1 · 1240 MADISON AVENUEOpen ↗
Showing 3 of 58 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature27
09/05/2026M00197180-I1 · 875 AVENUE OF THE AMEROpen ↗
09/03/2026M00526092-I1 · 50 EAST 57 STREETOpen ↗
09/03/2026M00525297-I1 · 50 EAST 57 STREETOpen ↗
Showing 3 of 27 on file for this type
▸BISTECHNICAL REPORT: RESPONSIBILITY/CERTIFICATION26
03/10/2020123264680 · 366 WEST 15 STREETOpen ↗
03/09/2020123264680 · 366 WEST 15 STREETOpen ↗
03/06/2020123264680 · 366 WEST 15 STREETOpen ↗
Showing 3 of 26 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature18
09/30/2026M00525336-I1 · 50 EAST 57 STREETOpen ↗
09/01/2026M01046564-I1 · 1240 MADISON AVENUEOpen ↗
08/31/2026M00525297-I1 · 50 EAST 57 STREETOpen ↗
Showing 3 of 18 on file for this type
▸BISPROFESSIONAL CERTIFICATION STATEMENT5
03/10/2014121941042 · 77 WARREN STREETOpen ↗
Showing 1 of 5 on file for this type
▸BISPROFESSIONAL CERTIFIED CHECKLIST5
03/10/2014121941042 · 77 WARREN STREETOpen ↗
11/10/2009220036609 · 5500 BROADWAYOpen ↗
Showing 2 of 5 on file for this type
▸BISPROFESSIONAL CERTIFICATION STATEMENT FORM1
11/10/2009220036609 · 5500 BROADWAYOpen ↗
▸Trade Schedules & Equipment25
▸BISSCHEDULE B - PLUMBING/SPRINKLER/STANDPIPE6
07/30/2019421893758 · 217-14 HEMPSTEAD AVENUEOpen ↗
05/29/2015320100029 · 2544 FLATBUSH AVENUEOpen ↗
08/21/2014121663636 · 77 WARREN STREETOpen ↗
Showing 3 of 6 on file for this type
▸BISEQUIPMENT USE PERMITS4
11/25/2020421893758 · 217-14 HEMPSTEAD AVENUEOpen ↗
11/04/2020421893758 · 217-14 HEMPSTEAD AVENUEOpen ↗
10/26/2015320100029 · 2544 FLATBUSH AVENUEOpen ↗
Showing 3 of 4 on file for this type
▸BISSELF-CERT PLUMBING NOTICE4
10/17/2014121663636 · 77 WARREN STREETOpen ↗
05/08/2014121663636 · 77 WARREN STREETOpen ↗
05/07/2010320100029 · 2544 FLATBUSH AVENUEOpen ↗
Showing 3 of 4 on file for this type
▸BISEQUIPMENT USE APPLICATION/PERMIT4
10/26/2015320100029 · 2544 FLATBUSH AVENUEOpen ↗
Showing 1 of 4 on file for this type
▸BISSCHEDULE B - PLUMBING3
03/31/2010320100029 · 2544 FLATBUSH AVENUEOpen ↗
11/10/2009220036609 · 5500 BROADWAYOpen ↗
Showing 2 of 3 on file for this type
▸BISSCHEDULE C - HEATING & COMBUSTION EQUIPMENT2
11/10/2009220036609 · 5500 BROADWAYOpen ↗
11/10/2009220036609 · 5500 BROADWAYOpen ↗
▸BISHVAC & SERVICE WATER HEATING EQUIPMENT1
04/03/2025122696975 · 310 RIVERSIDE DRIVEOpen ↗
▸BISHVAC & SERVICE WATER HEATING SYSTEM CONTROLS1
04/03/2025122696975 · 310 RIVERSIDE DRIVEOpen ↗
▸Safety & Tenant Protection4
▸BISTenant Protection Plan and Notes2
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 2 on file for this type
▸BISSRO MD ANTI-HARASSMENT CHECKLIST1
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 1 on file for this type
▸DOB NOWTenant Protection Plan1
08/13/2026M00269368-I1 · 785 PARK AVENUEOpen ↗
▸Environmental & Asbestos32
▸DOB NOWDEP ACP-5: Asbestos Assessment Report21
09/05/2026M00197180-I1 · 875 AVENUE OF THE AMEROpen ↗
09/03/2026M00526092-I1 · 50 EAST 57 STREETOpen ↗
08/29/2026M00721319-I1 · 1412 BROADWAYOpen ↗
Showing 3 of 21 on file for this type
▸BISASBESTOS: CERTIFICATION (DEP ACP5)3
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 3 on file for this type
▸DOB NOWDEP ACP-20/ACP-21: Asbestos Project Conditional Completion Form/Asbestos Project Completion Form2
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 2 on file for this type
▸DOB NOWOER: Notice to Proceed2
08/13/2026M01057987-I1 · 555 WEST 18 STREETOpen ↗
08/13/2026M01057987-P1 · 555 WEST 18 STREETOpen ↗
▸BISTHIS IS 'NOT AN ASBESTOS PROJECT'1
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 1 on file for this type
▸BISASBESTOS EXEMPTION CERTIFICATION LETTER1
11/10/2009220036609 · 5500 BROADWAYOpen ↗
▸BISASBESTOS: COMPLETION OR CLOSEOUT (ACP20/21/5)1
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 1 on file for this type
▸DOB NOWOER: Notice of Satisfaction1
08/13/2026M01057987-I1 · 555 WEST 18 STREETOpen ↗
▸Energy Compliance27
▸BISTECHNICAL REPORT: ENERGY CODE PROGRESS INSPS12
03/09/2020123264680 · 366 WEST 15 STREETOpen ↗
07/28/2016122696975 · 310 RIVERSIDE DRIVEOpen ↗
01/30/2015121663636 · 77 WARREN STREETOpen ↗
Showing 3 of 12 on file for this type
▸BISAS-BUILT ENERGY ANALYSIS5
10/29/2020421893758 · 217-14 HEMPSTEAD AVENUEOpen ↗
03/09/2020123264680 · 366 WEST 15 STREETOpen ↗
01/30/2015121663636 · 77 WARREN STREETOpen ↗
Showing 3 of 5 on file for this type
▸BISTECHNICAL REPORT: ENERGY CODE - RESPONSIBILITY2
10/29/2020421893758 · 217-14 HEMPSTEAD AVENUEOpen ↗
10/29/2020421893758 · 217-14 HEMPSTEAD AVENUEOpen ↗
▸BISTR8: Energy Code Progress Inspections2
03/11/2014121663636 · 77 WARREN STREETOpen ↗
Showing 1 of 2 on file for this type
▸DOB NOWEN2: As Built Energy Analysis.2
08/13/2026M00525336-I1 · 50 EAST 57 STREETOpen ↗
08/13/2026M00721319-I1 · 1412 BROADWAYOpen ↗
▸BIS* HVAC INSULATION AND SEALING1
04/03/2025122696975 · 310 RIVERSIDE DRIVEOpen ↗
▸BISAS-BUILT ENERGY ANALYSIS (EN2)1
04/03/2025122696975 · 310 RIVERSIDE DRIVEOpen ↗
▸BISENERGY CODE COMPLIANCE INSPECTIONS1
04/03/2025122696975 · 310 RIVERSIDE DRIVEOpen ↗
▸DOB NOWPreliminary Commissioning Report Certification1
08/13/2026M00721319-I1 · 1412 BROADWAYOpen ↗
▸Inspections & Test Reports6
▸BISTECHNICAL REPORT: RESPONSIBILITY4
10/29/2020421893758 · 217-14 HEMPSTEAD AVENUEOpen ↗
10/29/2020421893758 · 217-14 HEMPSTEAD AVENUEOpen ↗
09/02/2020123264680 · 366 WEST 15 STREETOpen ↗
Showing 3 of 4 on file for this type
▸BISFIRE-RESISTANT PENETRATIONS AND JOINTS (FIRESTOP)1
11/21/2025122696975 · 310 RIVERSIDE DRIVEOpen ↗
▸BISMECHANICAL SYSTEMS1
11/21/2025122696975 · 310 RIVERSIDE DRIVEOpen ↗
▸Approvals, Objections & Sign-offs13
▸BISCERTIFICATE OF OCCUPANCY/LOC: REQUEST9
11/04/2020421893758 · 217-14 HEMPSTEAD AVENUEOpen ↗
09/02/2020123264680 · 366 WEST 15 STREETOpen ↗
06/16/2020123264680 · 366 WEST 15 STREETOpen ↗
Showing 3 of 9 on file for this type
▸BISADMINISTRATIVE OBJECTIONS2
11/10/2009220036609 · 5500 BROADWAYOpen ↗
Showing 1 of 2 on file for this type
▸BISFINAL1
04/03/2025122696975 · 310 RIVERSIDE DRIVEOpen ↗
▸BISLANDMARKS APPROVAL1
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 1 on file for this type
▸Cost, Insurance & Ownership18
▸BISCOST AFFIDAVIT17
10/29/2020421893758 · 217-14 HEMPSTEAD AVENUEOpen ↗
03/09/2020123264680 · 366 WEST 15 STREETOpen ↗
10/26/2015320100029 · 2544 FLATBUSH AVENUEOpen ↗
Showing 3 of 17 on file for this type
▸BISCOST AFFIDAVIT (FINAL): PW31
11/25/2025122696975 · 310 RIVERSIDE DRIVEOpen ↗
▸Filing & Intake Forms18
▸BISEFILING COVER SHEET11
03/10/2014121941042 · 77 WARREN STREETOpen ↗
11/10/2009220036609 · 5500 BROADWAYOpen ↗
Showing 2 of 11 on file for this type
▸BISADDITIONAL INFORMATION4
10/02/2020421893758 · 217-14 HEMPSTEAD AVENUEOpen ↗
08/01/2019421893758 · 217-14 HEMPSTEAD AVENUEOpen ↗
07/30/2019421893758 · 217-14 HEMPSTEAD AVENUEOpen ↗
Showing 3 of 4 on file for this type
▸BISBOROUGH INTAKE FORM3
03/10/2020123264680 · 366 WEST 15 STREETOpen ↗
03/10/2020123264680 · 366 WEST 15 STREETOpen ↗
Showing 2 of 3 on file for this type
▸Other Documents5
▸BISSHUTOFF DAMPERS1
04/03/2025122696975 · 310 RIVERSIDE DRIVEOpen ↗
▸BISENVIRONMENTAL "E" DEP NOTICE OF SATISFACTION1
03/09/2020123264680 · 366 WEST 15 STREETOpen ↗
▸BISDHCR DOCUMENT1
07/12/2019122696975 · 310 RIVERSIDE DRIVEOpen ↗
▸BIS* LOADING DECK WEATHER SEALS1
11/04/2020421893758 · 217-14 HEMPSTEAD AVENUEOpen ↗
▸BISMAINTENANCE INFORMATION1
04/03/2025122696975 · 310 RIVERSIDE DRIVEOpen ↗