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Contractor
NYBS MECHANICAL LLC
General Contractor
3 projects with open permitsQUEENS · 6BROOKLYN · 4MANHATTAN · 2
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13 buildings
25
Total Filings
13
Projects on File
7
Buildings Worked
3
Projects w/ Open Permits
General Contractor
Primary Trade
Activity
Projects by first filing month13 projects all-time
0123Oct '14 · 1Nov '16 · 1Apr '18 · 2Apr '19 · 1Feb '20 · 1Jun '21 · 1Dec '21 · 1Feb '22 · 2Mar '22 · 1Sep '22 · 1Nov '22 · 120152016201720182019202020212022
bars = month · line = 3-mo average
Portfolio status
Browse projects →
Open permit323%
Signed off431%
Other status646%
By project type
Alteration7
Most active buildings
All buildings →
1646 1 AVENUEMANHATTAN · latest 01/19/2023
1 projects
400 LAFAYETTE STREETMANHATTAN · latest 04/04/2018
1 projects
50 VAN CORTLANDT AVENUEBRONX · latest 04/09/2019
1 projects
33 SKILLMAN AVENUEBROOKLYN · latest 03/31/2022
1 projects
231 JEROME STREETBROOKLYN · latest 07/18/2017
1 projects
8524 3 AVENUEBROOKLYN · latest 10/03/2022
1 projects
Key relationships
Everyone →
Most recent projects
All projects →
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M08023090 ↗1646 1 AVENUE
MANHATTAN
AlterationSigned-off11/18/202201/19/2023
Design SIDERIS KEFALAS ENGINEERS PC
Owner RIDGEWOOD SAVINGS BANK
Herewith filing to replace in place existing air handler and condensing unit with new air handler and condensing unit
Q00661992 ↗99-15 ROCKAWAY BEACH BLVD
QUEENS
AlterationPermit Issued02/18/202211/24/2022
Design SIDERIS KEFALAS ENGINEERS PC
Owner ROCKLYN ASSET CORP
Herewith filing Mechanical work for Church. No change to use occupancy or egress.
B07999845 ↗8524 3 AVENUE
BROOKLYN
AlterationSigned-off09/16/202210/03/2022
Design SIDERIS KEFALAS ENGINEERS PC
Owner RIDGEWOOD SAVINGS BANK
Herewith filing to replace in place existing roof top unit with new roof top unit
Q00688070 ↗87-06 VAN WYCK EXPRESSWAY
QUEENS
AlterationPermit Issued03/09/202205/04/2022
Design SIDERIS KEFALAS ENGINEERS PC
HEREWITH FILING A MECHANICAL WORK TYPE FOR NEW ROOF TOP UNITS AND DUCT WORK. NO CHANGE TO USE OCCUPANCY OR EGRESS.
B00654905 ↗33 SKILLMAN AVENUE
BROOKLYN
AlterationSigned-off02/04/202203/31/2022
Design EDWARD I MILLS & ASSOCIATES ARCHITE
This application is being filed for Mechanical work for installation of 1 Roof Exhaust Fan, relocation of 1 Fan on centerline of building, n…
Q00649251 ↗731 CHURCH ROAD
QUEENS
AlterationPermit Issued12/21/202103/22/2022
Design SIDERIS KEFALAS ENGINEERS PC
Owner ROCKLYN ASSET CORP
Herewith filing Mechanical work for Church. No change to use occupancy or egress.
Counts cover all 13 projects (7 DOB NOW + 6 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
SIDERIS KEFALAS ENGINEERS PC504/05/2024
CHOI ENGINEERING PLLC102/24/2020
EDWARD I MILLS & ASSOCIATES ARCHITE102/04/2022
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
RIDGEWOOD SAVINGS BANK204/05/2024
ROCKLYN ASSET CORP202/18/2022
LAGUARDIA CENTER REALTY LLC102/24/2020
7 DOB NOW projects + 6 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 13Open permit 3Signed off 4Other status 6
13 projects
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M08023090 ↗1646 1 AVENUE
MANHATTAN
AlterationSigned-off11/18/202201/19/2023
Design SIDERIS KEFALAS ENGINEERS PC
Owner RIDGEWOOD SAVINGS BANK
Herewith filing to replace in place existing air handler and condensing unit with new air handler and condensing unit
Q00661992 ↗99-15 ROCKAWAY BEACH BLVD
QUEENS
AlterationPermit Issued02/18/202211/24/2022
Design SIDERIS KEFALAS ENGINEERS PC
Owner ROCKLYN ASSET CORP
Herewith filing Mechanical work for Church. No change to use occupancy or egress.
B07999845 ↗8524 3 AVENUE
BROOKLYN
AlterationSigned-off09/16/202210/03/2022
Design SIDERIS KEFALAS ENGINEERS PC
Owner RIDGEWOOD SAVINGS BANK
Herewith filing to replace in place existing roof top unit with new roof top unit
Q00688070 ↗87-06 VAN WYCK EXPRESSWAY
QUEENS
AlterationPermit Issued03/09/202205/04/2022
Design SIDERIS KEFALAS ENGINEERS PC
HEREWITH FILING A MECHANICAL WORK TYPE FOR NEW ROOF TOP UNITS AND DUCT WORK. NO CHANGE TO USE OCCUPANCY OR EGRESS.
B00654905 ↗33 SKILLMAN AVENUE
BROOKLYN
AlterationSigned-off02/04/202203/31/2022
Design EDWARD I MILLS & ASSOCIATES ARCHITE
This application is being filed for Mechanical work for installation of 1 Roof Exhaust Fan, relocation of 1 Fan on centerline of building, n…
Q00649251 ↗731 CHURCH ROAD
QUEENS
AlterationPermit Issued12/21/202103/22/2022
Design SIDERIS KEFALAS ENGINEERS PC
Owner ROCKLYN ASSET CORP
Herewith filing Mechanical work for Church. No change to use occupancy or egress.
421731898BIS10-02 FOREST AVENUE
QUEENS
—ISSUED06/16/202106/16/2021—MH
Q00304820 ↗43-02 DITMARS BOULEVARD
QUEENS
AlterationSigned-off02/24/202003/13/2020
Design CHOI ENGINEERING PLLC
Owner LAGUARDIA CENTER REALTY LLC
Filer DOMINION EXPEDITING
Herewith in filing to install new mitsubishi split system air conditioning units on the roof and 1st fl ATM server room. Removing exiting un…
220694292BIS50 VAN CORTLANDT AVENUE
BRONX
—ISSUED04/09/201904/09/2019—MH
340588153BIS599 THROOP AVENUE
BROOKLYN
—ISSUED04/16/201804/16/2018—MH
123335462BIS400 LAFAYETTE STREET
MANHATTAN
—ISSUED04/04/201804/04/2018—OT
340432197BIS231 JEROME STREET
BROOKLYN
—ISSUED11/02/201607/18/2017—MH
420823498BIS16-22 CLINTONVILLE STREET
QUEENS
—ISSUED10/15/201410/15/2014—MH
Click a row for this entity's own projects, plans and documents at that building.
BuildingFilingsMost Recent
1646 1 AVENUE ↗707/08/2026
33 SKILLMAN AVENUE ↗303/21/2026
99-15 ROCKAWAY BEACH BLVD ↗303/21/2026
731 CHURCH ROAD ↗303/21/2026
8524 3 AVENUE ↗303/21/2026
87-06 VAN WYCK EXPRESSWAY ↗303/21/2026
43-02 DITMARS BOULEVARD ↗303/21/2026
▾Documents — 190 on file (BIS + DOB NOW)
▸Plans & Drawings8
▸DOB NOWPlans/Sketch7
09/01/2026M08023090-I1 · 1646 1 AVENUERequest digital key ↗
08/31/2026B00654905-I1 · 33 SKILLMAN AVENUERequest digital key ↗
08/28/2026B07999845-P1 · 8524 3 AVENUERequest digital key ↗
Showing 3 of 7 on file for this type
▸DOB NOWPlans/Sketch - Mechanical Systems1
08/28/2026Q00304820-I1 · 43-02 DITMARS BOULEVARDRequest digital key ↗
▸Applications & Permits19
▸BISPLAN / WORK APPROVAL APPLICATION10
07/28/2021421731898 · 10-02 FOREST AVENUEOpen ↗
03/08/2018340588153 · 599 THROOP AVENUEOpen ↗
10/13/2016340432197 · 231 JEROME STREETOpen ↗
Showing 3 of 10 on file for this type
▸BISWORK PERMIT APPLICATION8
08/02/2021421731898 · 10-02 FOREST AVENUEOpen ↗
04/09/2019220694292 · 50 VAN CORTLANDT AVENUEOpen ↗
04/16/2018340588153 · 599 THROOP AVENUEOpen ↗
Showing 3 of 8 on file for this type
▸BISNon-Directive 14 Construction Sign Off Including Sign Applications1
03/28/2019123335462 · 400 LAFAYETTE STREETOpen ↗
▸Seals & Professional Certifications57
▸DOB NOWProgress Inspector Seal & Signature23
09/02/2026Q00304820-I1 · 43-02 DITMARS BOULEVARDOpen ↗
09/02/2026Q00304820-I1 · 43-02 DITMARS BOULEVARDOpen ↗
09/02/2026Q00304820-I1 · 43-02 DITMARS BOULEVARDOpen ↗
Showing 3 of 23 on file for this type
▸BISTECHNICAL REPORT: RESPONSIBILITY/CERTIFICATION15
05/15/2019220694292 · 50 VAN CORTLANDT AVENUEOpen ↗
03/28/2019123335462 · 400 LAFAYETTE STREETOpen ↗
03/28/2019123335462 · 400 LAFAYETTE STREETOpen ↗
Showing 3 of 15 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature8
09/01/2026M08023090-I1 · 1646 1 AVENUEOpen ↗
08/31/2026B00654905-I1 · 33 SKILLMAN AVENUEOpen ↗
08/28/2026B07999845-I1 · 8524 3 AVENUEOpen ↗
Showing 3 of 8 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature7
09/02/2026Q00304820-I1 · 43-02 DITMARS BOULEVARDOpen ↗
09/02/2026Q00304820-I1 · 43-02 DITMARS BOULEVARDOpen ↗
08/31/2026Q00649251-I1 · 731 CHURCH ROADOpen ↗
Showing 3 of 7 on file for this type
▸BISAPPLICANT OWNER SIGNATURE2
03/08/2018340588153 · 599 THROOP AVENUEOpen ↗
10/13/2016340432197 · 231 JEROME STREETOpen ↗
▸BISPROFESSIONAL CERTIFICATION STATEMENT1
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 1 on file for this type
▸BISPROFESSIONAL CERTIFIED CHECKLIST1
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 1 on file for this type
▸Trade Schedules & Equipment13
▸BISEQUIPMENT USE APPLICATION/PERMIT7
01/14/2022421731898 · 10-02 FOREST AVENUEOpen ↗
01/12/2022421731898 · 10-02 FOREST AVENUEOpen ↗
05/24/2019220694292 · 50 VAN CORTLANDT AVENUEOpen ↗
Showing 3 of 7 on file for this type
▸BISEQUIPMENT USE PERMITS4
01/20/2022421731898 · 10-02 FOREST AVENUEOpen ↗
05/24/2019220694292 · 50 VAN CORTLANDT AVENUEOpen ↗
03/28/2019123335462 · 400 LAFAYETTE STREETOpen ↗
Showing 3 of 4 on file for this type
▸BISHVAC & SERVICE WATER HEATING EQUIPMENT1
01/18/2022421731898 · 10-02 FOREST AVENUEOpen ↗
▸BISHVAC & SERVICE WATER HEATING SYSTEM CONTROLS1
01/18/2022421731898 · 10-02 FOREST AVENUEOpen ↗
▸Safety & Tenant Protection1
▸DOB NOWHPD-1: Anti-Harassment Area Checklist1
08/13/2026B00654905-I1 · 33 SKILLMAN AVENUEOpen ↗
▸Environmental & Asbestos13
▸DOB NOWDEP ACP-5: Asbestos Assessment Report6
09/01/2026M08023090-I1 · 1646 1 AVENUEOpen ↗
08/31/2026B00654905-I1 · 33 SKILLMAN AVENUEOpen ↗
08/28/2026Q00304820-I1 · 43-02 DITMARS BOULEVARDOpen ↗
Showing 3 of 6 on file for this type
▸BISASBESTOS: CERTIFICATION (DEP ACP5)3
03/08/2018340588153 · 599 THROOP AVENUEOpen ↗
10/18/2016340432197 · 231 JEROME STREETOpen ↗
Showing 2 of 3 on file for this type
▸BISDEP ASBESTOS PROJECT COMPLETION FORM1
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 1 on file for this type
▸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
08/13/2026B00654905-I1 · 33 SKILLMAN AVENUEOpen ↗
▸DOB NOWOER: Notice to Proceed1
08/13/2026B00654905-I1 · 33 SKILLMAN AVENUEOpen ↗
▸Energy Compliance22
▸BISTECHNICAL REPORT: ENERGY CODE PROGRESS INSPS9
05/24/2019220694292 · 50 VAN CORTLANDT AVENUEOpen ↗
05/15/2019220694292 · 50 VAN CORTLANDT AVENUEOpen ↗
03/28/2019123335462 · 400 LAFAYETTE STREETOpen ↗
Showing 3 of 9 on file for this type
▸BISTECHNICAL REPORT: ENERGY CODE - RESPONSIBILITY5
01/12/2022421731898 · 10-02 FOREST AVENUEOpen ↗
03/08/2018340588153 · 599 THROOP AVENUEOpen ↗
11/02/2016340432197 · 231 JEROME STREETOpen ↗
Showing 3 of 5 on file for this type
▸BISAS-BUILT ENERGY ANALYSIS4
05/15/2019220694292 · 50 VAN CORTLANDT AVENUEOpen ↗
03/28/2019123335462 · 400 LAFAYETTE STREETOpen ↗
03/22/2019123335462 · 400 LAFAYETTE STREETOpen ↗
Showing 3 of 4 on file for this type
▸DOB NOWEN2: As Built Energy Analysis3
08/13/2026Q00688070-I1 · 87-06 VAN WYCK EXPRESSWAYOpen ↗
08/13/2026Q00649251-I1 · 731 CHURCH ROADOpen ↗
08/13/2026B00654905-I1 · 33 SKILLMAN AVENUEOpen ↗
▸BIS* HVAC INSULATION AND SEALING1
01/18/2022421731898 · 10-02 FOREST AVENUEOpen ↗
▸Inspections & Test Reports8
▸BISTECHNICAL REPORT: RESPONSIBILITY5
01/12/2022421731898 · 10-02 FOREST AVENUEOpen ↗
03/08/2018340588153 · 599 THROOP AVENUEOpen ↗
11/02/2016340432197 · 231 JEROME STREETOpen ↗
Showing 3 of 5 on file for this type
▸BISFINAL INSPECTION1
01/14/2022421731898 · 10-02 FOREST AVENUEOpen ↗
▸BISMECHANICAL SYSTEMS1
01/12/2022421731898 · 10-02 FOREST AVENUEOpen ↗
▸BISMANUFACTURE STATEMENT: QUALITY OF MASONRY UNITS-REQUIRED PRIOR TO CONSTRUCTION OF MASONRY (B FORM 10H)1
12/07/2013420823498 · 16-22 CLINTONVILLE STREETOpen ↗
▸Approvals, Objections & Sign-offs17
▸BISCERTIFICATE OF OCCUPANCY/LOC: REQUEST7
01/21/2022421731898 · 10-02 FOREST AVENUEOpen ↗
05/24/2019220694292 · 50 VAN CORTLANDT AVENUEOpen ↗
05/15/2019220694292 · 50 VAN CORTLANDT AVENUEOpen ↗
Showing 3 of 7 on file for this type
▸BISLANDMARKS APPROVAL4
03/28/2019123335462 · 400 LAFAYETTE STREETOpen ↗
03/22/2019123335462 · 400 LAFAYETTE STREETOpen ↗
03/08/2018340588153 · 599 THROOP AVENUEOpen ↗
Showing 3 of 4 on file for this type
▸DOB NOWFee Exempt Supporting Document - DOF ACRIS report or BIB letter3
08/13/2026Q00649251-I1 · 731 CHURCH ROADOpen ↗
08/13/2026Q00688070-I1 · 87-06 VAN WYCK EXPRESSWAYOpen ↗
08/13/2026Q00661992-I1 · 99-15 ROCKAWAY BEACH BLVDOpen ↗
▸BISLETTERS - SUPPORTING DOCUMENTATION2
03/22/2018340588153 · 599 THROOP AVENUEOpen ↗
09/18/2015420823498 · 16-22 CLINTONVILLE STREETOpen ↗
▸BISADMINISTRATIVE OBJECTIONS1
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 & Ownership12
▸BISCOST AFFIDAVIT9
05/15/2019220694292 · 50 VAN CORTLANDT AVENUEOpen ↗
03/28/2019123335462 · 400 LAFAYETTE STREETOpen ↗
03/08/2018340588153 · 599 THROOP AVENUEOpen ↗
Showing 3 of 9 on file for this type
▸BISCOST AFFIDAVIT (FINAL): PW32
02/16/2023340432197 · 231 JEROME STREETOpen ↗
01/12/2022421731898 · 10-02 FOREST AVENUEOpen ↗
▸BISSTEEL AFFIDAVIT- FINAL1
03/28/2015420823498 · 16-22 CLINTONVILLE STREETOpen ↗
▸Filing & Intake Forms19
▸BISADDITIONAL INFORMATION8
04/09/2019220694292 · 50 VAN CORTLANDT AVENUEOpen ↗
03/22/2018340588153 · 599 THROOP AVENUEOpen ↗
10/18/2016340432197 · 231 JEROME STREETOpen ↗
Showing 3 of 8 on file for this type
▸BISBOROUGH INTAKE FORM5
05/24/2019220694292 · 50 VAN CORTLANDT AVENUEOpen ↗
05/15/2019220694292 · 50 VAN CORTLANDT AVENUEOpen ↗
03/28/2019123335462 · 400 LAFAYETTE STREETOpen ↗
Showing 3 of 5 on file for this type
▸BISEFILING COVER SHEET4
On file, but not among the 200 most recently loaded documents for this source.
Showing 0 of 4 on file for this type
▸BISEFILING JOB APPLICATION COVER SHEET2
03/08/2018340588153 · 599 THROOP AVENUEOpen ↗
10/13/2016340432197 · 231 JEROME STREETOpen ↗
▸Other Documents1
▸BISMAINTENANCE INFORMATION1
01/18/2022421731898 · 10-02 FOREST AVENUEOpen ↗