Backflow Prev. Of NY, LLC — NYC Fire Suppression Contractor: DOB Permits, Filings & Buildings

Contractor

BACKFLOW PREV. OF NY, LLC

Fire Suppression Contractor

1 project with open permitsMANHATTAN · 4QUEENS · 1STATEN ISLAND · 1

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6 buildings

Total Filings

Projects on File

Buildings Worked

Projects w/ Open Permits

Fire Suppression Contractor

Primary Trade

Activity

Projects by first filing month6 projects all-time

bars = month · line = 3-mo average

Portfolio status

Browse projects →

Open permit117%

Other status583%

By project type

Alteration1

Most active buildings

All buildings →

834 5 AVENUEMANHATTAN · 1 open · latest 10/24/2019

1 projects

2005 MADISON AVENUEMANHATTAN · latest 11/09/2011

1 projects

215 WEST 20 STREETMANHATTAN · latest 08/27/2013

1 projects

MAIN STREETMANHATTAN · latest 09/29/2011

1 projects

11-05 44TH DRIVEQUEENS · latest 07/22/2013

1 projects

22 CENTRAL AVENUESTATEN ISLAND · latest 09/30/2009

1 projects

Key relationships

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Design firms

LL ENGINEERING PC

1 projects

Most recent projects

All projects →

Project	Address	Type	Status	Filed	Latest permit	On the project	Description
M00202652 ↗	834 5 AVENUE MANHATTAN	Alteration	Permit Issued	09/19/2019	10/24/2019	Design LL ENGINEERING PC	REMOVAL OF HOSE STATIONS THROUGHOUT BUILDING AND NEW STORAGE CABINET ON FIRST FLOOR. NO CHANGES TO EGRESS, OCCUPANCY OR USE.,
121730797BIS	215 WEST 20 STREET MANHATTAN	—	ISSUED	08/27/2013	08/27/2013	—	SP
420630446BIS	11-05 44TH DRIVE QUEENS	—	ISSUED	07/22/2013	07/22/2013	—	PL, SD
103889801BIS	2005 MADISON AVENUE MANHATTAN	—	ISSUED	11/09/2011	11/09/2011	—	SP
120339696BIS	MAIN STREET MANHATTAN	—	ISSUED	09/29/2011	09/29/2011	—	PL, SP
510031680BIS	22 CENTRAL AVENUE STATEN ISLAND	—	ISSUED	09/30/2009	09/30/2009	—	SD

Counts cover all 6 projects (1 DOB NOW + 5 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.

Name	Projects together	Most recent
LL ENGINEERING PC	1	09/19/2019

1 DOB NOW project + 5 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 6Open permit 1Other status 5

6 projects

Project	Address	Type	Status	Filed	Latest permit	On the project	Description
M00202652 ↗	834 5 AVENUE MANHATTAN	Alteration	Permit Issued	09/19/2019	10/24/2019	Design LL ENGINEERING PC	REMOVAL OF HOSE STATIONS THROUGHOUT BUILDING AND NEW STORAGE CABINET ON FIRST FLOOR. NO CHANGES TO EGRESS, OCCUPANCY OR USE.,
121730797BIS	215 WEST 20 STREET MANHATTAN	—	ISSUED	08/27/2013	08/27/2013	—	SP
420630446BIS	11-05 44TH DRIVE QUEENS	—	ISSUED	07/22/2013	07/22/2013	—	PL, SD
103889801BIS	2005 MADISON AVENUE MANHATTAN	—	ISSUED	11/09/2011	11/09/2011	—	SP
120339696BIS	MAIN STREET MANHATTAN	—	ISSUED	09/29/2011	09/29/2011	—	PL, SP
510031680BIS	22 CENTRAL AVENUE STATEN ISLAND	—	ISSUED	09/30/2009	09/30/2009	—	SD

Click a row for this entity's own projects, plans and documents at that building.

Building	Filings	Most Recent
834 5 AVENUE ↗	1	07/08/2026

▾Documents — 78 on file (BIS + DOB NOW)

▸Plans & Drawings1

▸DOB NOWPlans/Sketch - Standpipe1

09/05/2026M00202652-I1 · 834 5 AVENUERequest digital key ↗

▸Applications & Permits16

▸BISPLAN / WORK APPROVAL APPLICATION10

11/24/2023420630446 · 11-05 44TH DRIVEOpen ↗

11/08/2023420630446 · 11-05 44TH DRIVEOpen ↗

11/01/2023420630446 · 11-05 44TH DRIVEOpen ↗

Showing 3 of 10 on file for this type

▸BISWORK PERMIT APPLICATION6

09/06/2013121730797 · 215 WEST 20 STREETOpen ↗

10/06/2011120339696 · MAIN STREETOpen ↗

Showing 3 of 6 on file for this type

▸Seals & Professional Certifications13

▸BISTECHNICAL REPORT: RESPONSIBILITY/CERTIFICATION7

08/21/2013121730797 · 215 WEST 20 STREETOpen ↗

04/27/2010120339696 · MAIN STREETOpen ↗

01/15/2010510031680 · 22 CENTRAL AVENUEOpen ↗

Showing 3 of 7 on file for this type

▸BISPROFESSIONAL CERTIFIED CHECKLIST2

08/21/2013121730797 · 215 WEST 20 STREETOpen ↗

Showing 1 of 2 on file for this type

▸BISPROFESSIONAL CERTIFICATION STATEMENT FORM2

08/21/2013121730797 · 215 WEST 20 STREETOpen ↗

Showing 1 of 2 on file for this type

▸DOB NOWDPL-1: Design Professional Seal & Signature1

08/13/2026M00202652-I1 · 834 5 AVENUEOpen ↗

▸DOB NOWSpecial Inspector Seal & Signature1

08/29/2026M00202652-I1 · 834 5 AVENUEOpen ↗

▸Trade Schedules & Equipment20

▸BISSCHEDULE B - PLUMBING7

09/22/2023420630446 · 11-05 44TH DRIVEOpen ↗

09/11/2023420630446 · 11-05 44TH DRIVEOpen ↗

08/21/2013121730797 · 215 WEST 20 STREETOpen ↗

Showing 3 of 7 on file for this type

▸BISRPZ/DDCV TEST REPORT : GEN215B4

08/04/2014420630446 · 11-05 44TH DRIVEOpen ↗

Showing 1 of 4 on file for this type

▸BISSELF-CERT PLUMBING NOTICE4

08/26/2014121730797 · 215 WEST 20 STREETOpen ↗

07/24/2012120339696 · MAIN STREETOpen ↗

01/15/2010510031680 · 22 CENTRAL AVENUEOpen ↗

Showing 3 of 4 on file for this type

▸BISSTANDPIPE INSP REPORT : FP-842

01/22/2010510031680 · 22 CENTRAL AVENUEOpen ↗

Showing 1 of 2 on file for this type

▸BISSUPPORTING DOCUMENT STANDPIPE INSP REPORT : FP-841

01/15/2010510031680 · 22 CENTRAL AVENUEOpen ↗

▸BISPLUMBING - SUPPORTING DOCUMENTATION1

01/21/2010510031680 · 22 CENTRAL AVENUEOpen ↗

▸DOB NOWFDNY: Letter of No Objection1

08/13/2026M00202652-I1 · 834 5 AVENUEOpen ↗

▸Environmental & Asbestos4

▸BISTHIS IS 'NOT AN ASBESTOS PROJECT'1

04/27/2010120339696 · MAIN STREETOpen ↗

▸BISACP5 ASBESTOS: CERTIFICATION (DEP ACP5)1

08/21/2013121730797 · 215 WEST 20 STREETOpen ↗

▸BISASBESTOS EXEMPTION CERTIFICATION LETTER1

03/14/2008510031680 · 22 CENTRAL AVENUEOpen ↗

▸DOB NOWDEP ACP-5: Asbestos Assessment Report1

08/13/2026M00202652-I1 · 834 5 AVENUEOpen ↗

▸Energy Compliance3

▸BISAS-BUILT ENERGY ANALYSIS (EN2)1

05/08/2024420630446 · 11-05 44TH DRIVEOpen ↗

▸BISENERGY CODE COMPLIANCE INSPECTIONS1

05/08/2024420630446 · 11-05 44TH DRIVEOpen ↗

▸BISTECHNICAL REPORT: ENERGY CODE PROGRESS INSPS1

On file, but not among the 200 most recently loaded documents for this source.

Showing 0 of 1 on file for this type

▸Inspections & Test Reports1

▸BISHYDRO FLOW TEST LETTER1

08/21/2013121730797 · 215 WEST 20 STREETOpen ↗

▸Approvals, Objections & Sign-offs8

▸BISCERTIFICATE OF OCCUPANCY/LOC: REQUEST3

05/09/2024420630446 · 11-05 44TH DRIVEOpen ↗

04/19/2010510031680 · 22 CENTRAL AVENUEOpen ↗

01/22/2010510031680 · 22 CENTRAL AVENUEOpen ↗

▸BISADMINISTRATIVE OBJECTIONS3

04/27/2010120339696 · MAIN STREETOpen ↗

Showing 1 of 3 on file for this type

▸BISLETTERS - SUPPORTING DOCUMENTATION2

01/22/2010510031680 · 22 CENTRAL AVENUEOpen ↗

01/15/2010510031680 · 22 CENTRAL AVENUEOpen ↗

▸Cost, Insurance & Ownership5

▸BISCOST AFFIDAVIT4

08/21/2013121730797 · 215 WEST 20 STREETOpen ↗

04/27/2010120339696 · MAIN STREETOpen ↗

04/23/2010510031680 · 22 CENTRAL AVENUEOpen ↗

Showing 3 of 4 on file for this type

▸BISCOST AFFIDAVIT (FINAL): PW31

05/08/2024420630446 · 11-05 44TH DRIVEOpen ↗

▸Filing & Intake Forms6

▸BISADDITIONAL INFORMATION3

11/24/2023420630446 · 11-05 44TH DRIVEOpen ↗

11/16/2023420630446 · 11-05 44TH DRIVEOpen ↗

11/03/2023420630446 · 11-05 44TH DRIVEOpen ↗

▸BISEFILING COVER SHEET3

08/21/2013121730797 · 215 WEST 20 STREETOpen ↗

Showing 1 of 3 on file for this type

▸Other Documents1

▸BISEXTERNAL FORMS - SUPPORTING DOCUMENTATION1

01/31/2011120339696 · MAIN STREETOpen ↗

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