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Predominantly retail with other uses
6409 20 AVENUE
BROOKLYN · BIN 3133622
💬 Discuss this project
1931Year Built
2Stories
K4Building Class
R5Zoning
7,860 sfGross Floor Area
2Units
Predominantly retail with other uses · 7,400 sf lot · 1.06 FAR built · Flood zone X
Locations of Work
Architecture
Roof1p · 1 filing · 10 docs
Floor 28p · 1 filing · 20 docs
Floor 18p · 1 filing · 20 docs
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
20TH AVE PARTNERS1607/08/2026
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
03/28/2023$3.4M—20TH AVENUE PARTNERS, LLC → 6409 20TH AVE LLC$430/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
CITY BUILDING NY ARCHITECT P.C.1403/08/2024
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
CITY BUILDING NY ARCHITECT1203/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
HIGH QUALITY CONSTRUCTIONGeneral Contractor807/08/2026
CITY BUILDING NY ARCHITECT P CGeneral Contractor303/22/2026
QMB PLUMBING & HTG INCFire Protection107/08/2026
AMERICAN STANDARD P&H CORORP.Plumbing107/08/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
NKM ENGINEERING PLLC6244506/08/2023
ALLEN SHINFELD, P.E. PLLC1305503/30/2023
J&R DESIGN AND INSPECTION6637203/30/2023
Building Lifecycle
All (145)Filed (14)Permit Issued (5)Signed Off (4)Inspection (12)Objection (80)Special Inspection (30)
03/08/2024
Filed — Alteration CO
B00895926-I1
02/27/2024
Special inspection requirement — Fire-Resistant Penetrations and Joints
02/27/2024
Special inspection requirement — Fire-Resistance Rated Construction
02/27/2024
Special inspection requirement — Structural Stability – Alterations of existing buildings
02/27/2024
Special inspection requirement — Fenestration and door U-factor and product ratings
02/27/2024
Special inspection requirement — Fenestration areas
02/27/2024
Special inspection requirement — Energy Code Compliance Inspections
02/27/2024
Special inspection requirement — Fenestration air leakage
02/27/2024
Special inspection requirement — Insulation placement and R values
06/09/2023
Special inspection requirement — Maintenance information
NARESH MAHANGU
06/09/2023
Special inspection requirement — Metering
NARESH MAHANGU
06/09/2023
Special inspection requirement — Structural Stability – Alterations of existing buildings
NARESH MAHANGU
06/09/2023
Special inspection requirement — Fenestration areas
NARESH MAHANGU
06/09/2023
Special inspection requirement — Air barrier - visual inspection
NARESH MAHANGU
06/09/2023
Special inspection requirement — Exterior Insulation and Finish Systems (EIFS)
NARESH MAHANGU
06/09/2023
Special inspection requirement — Lighting controls
NARESH MAHANGU
06/09/2023
Special inspection requirement — Masonry
NARESH MAHANGU
06/09/2023
Special inspection requirement — Energy Code Compliance Inspections
NARESH MAHANGU
06/09/2023
Special inspection requirement — Insulation placement and R values
NARESH MAHANGU
06/09/2023
Special inspection requirement — Fenestration air leakage
NARESH MAHANGU
06/09/2023
Special inspection requirement — Fire-Resistance Rated Construction
NARESH MAHANGU
06/09/2023
Special inspection requirement — Fenestration and door U-factor and product ratings
NARESH MAHANGU
06/09/2023
Special inspection requirement — Interior lighting power
NARESH MAHANGU
06/09/2023
Special inspection requirement — Fire-Resistant Penetrations and Joints
NARESH MAHANGU
06/08/2023
Filed — Alteration CO
Change 1st floor use from commericial retail u.g. 6 to DAYCARE CENTER/SCHOOL FROM 2YEARS TO 6YEARS u.g. 3. Obtain new c of o.
B00605839-P8
06/02/2023
Special inspection requirement — Air barrier - visual inspection
NARESH MAHANGU
06/02/2023
Special inspection requirement — Fenestration air leakage
NARESH MAHANGU
06/02/2023
Special inspection requirement — Maintenance information
NARESH MAHANGU
06/02/2023
Special inspection requirement — Insulation placement and R values
NARESH MAHANGU
06/02/2023
Special inspection requirement — Interior lighting power
NARESH MAHANGU
06/02/2023
Special inspection requirement — Fenestration and door U-factor and product ratings
NARESH MAHANGU
06/02/2023
Special inspection requirement — Metering
NARESH MAHANGU
05/26/2023
Filed — Alteration CO
Change 1st floor use from commericial retail u.g. 6 to DAYCARE CENTER/SCHOOL FROM 2YEARS TO 6YEARS u.g. 3. Obtain new c of o.
B00605839-P6
05/17/2023
Signed off — Alteration
Renovation of an existing building proposed daycare center/school from 2 to 6 years U.G. 3 at 1st floor. Layout approved under Alt-CO job# B00605839. No change in use, egress or occupancy under this application.
B00532377-I1
05/12/2023
Inspection — Pass-Final General Construction Non-Directive 14
Pass
View inspection ↗
04/25/2023
Inspection — Fail-Final General Construction Non-Directive 14
Fail
View inspection ↗
04/24/2023
Signed off — Alteration
To file MS mechanical work in conjunction with DOB Now Build application job#B00605839-I1
B00695666-I1
03/30/2023
Filed — Alteration
Renovation of an existing building proposed daycare center/school from 2 to 6 years U.G. 3 at 1st floor. Layout approved under Alt-CO job# B00605839. No change in use, egress or occupancy under this application.
B00532377-P1
03/30/2023
Filed — Alteration
To file MS mechanical work in conjunction with DOB Now Build application job#B00605839-I1
B00695666-P1
03/24/2023
Permit issued — Mechanical Systems
B00695666-I1-MS
10/13/2022
Inspection — Pass-Final CND-Occupancy Inspection
Pass
View inspection ↗
09/28/2022
Filed — Alteration CO
Change 1st floor use from commericial retail u.g. 6 to DAYCARE CENTER/SCHOOL FROM 2YEARS TO 6YEARS u.g. 3. Obtain new c of o.
B00605839-P5
09/07/2022
Signed off — Alteration
To file SP work in conjunction with dob now build application job# B00532377
B00532420-I1
09/07/2022
Signed off — Alteration
To file PL work in conjunction with dob now application job#B00532377.
B00532412-I1
08/31/2022
Inspection — Certified Remove/Cap - work done in accordance with code
Certified
View inspection ↗
08/31/2022
Inspection — Certified Water and Sanitary-WS-Fixtures-Finish
Certified
View inspection ↗
08/30/2022
Inspection — Pass-Final CND-Occupancy Inspection
Pass
View inspection ↗
08/29/2022
Inspection — Pass-Final PL - Up to 3 Requested Floors
Pass
View inspection ↗
08/19/2022
Inspection — Certified Gas-Gas-Piping-Roughing
Certified
View inspection ↗
08/11/2022
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Roughing
Certified
View inspection ↗
08/11/2022
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Underground
Certified
View inspection ↗
08/01/2022
Permit issued — General Construction
B00605839-I1-GC
07/13/2022
Objection resolved — Addressed
06/14/2022
Objection raised — Scope
06/14/2022
Objection resolved — Addressed
06/14/2022
Objection raised — Plumbing
06/10/2022
Objection resolved — Addressed
06/09/2022
Filed — Alteration
To file PL work in conjunction with dob now application job#B00532377.
B00532412-P1
05/27/2022
Objection resolved — Addressed
05/27/2022
Objection resolved — Addressed
Latest 60 of 145 events.
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWMechanical SystemsSigned-offHIGH QUALITY CONSTRUCTION03/24/2023
DOB NOWGeneral ConstructionPermit IssuedHIGH QUALITY CONSTRUCTION08/01/2022
DOB NOWPlumbingSigned-offAMERICAN STANDARD P&H CORORP.02/21/2022
DOB NOWGeneral ConstructionSigned-offHIGH QUALITY CONSTRUCTION02/18/2022
DOB NOWSprinklersSigned-offQMB PLUMBING & HTG INC02/11/2022
BISPLISSUEDABR PLBG&HTG CONTR INC03/22/2013
BISPLISSUEDQMB PLUMBING & HEATING INC01/25/2013
BIS—ISSUEDSK ONE CONSTRUCTION INC01/07/2013
BISEQISSUEDSK ONE CONSTRUCTION INC01/07/2013
BISPLISSUEDPSI FIRE CORP08/24/2011
BISOTISSUEDCREATIVE CONTRACTING ACC04/06/2011
BISPLISSUEDABR PLBG&HTG CONTR INC10/20/2008
BIS—ISSUEDNORTH SHORE NEON SIGN CO.11/15/2007
BISPLISSUEDABR PLBG&HTG CONTR INC08/24/2007
BISMHISSUEDLORICH CONSTRUCTION MANAGEMENT08/22/2007
BISOTISSUEDLORICH CONSTRUCTION MANAGEMENT08/20/2007
BISEQISSUEDLORICH CONSTRUCTION MANAGEMENT08/20/2007
BISOTISSUEDARKEN INC.08/06/1996
BISMHISSUEDTWENTIETH EQUITIES CORP09/30/1991
1 project · most recent 08/17/2022
General Wiring
FiledStatusContractorScope
08/17/2022CompleteKJK ELECTRIC INCGeneral Wiring
▾Field Inspections (DOB CAP) — 12
DateTypeResultReport
05/12/2023Pass-Final General Construction Non-Directive 14PassView ↗
04/25/2023Fail-Final General Construction Non-Directive 14FailView ↗
10/13/2022Pass-Final CND-Occupancy InspectionPassView ↗
08/31/2022Certified Remove/Cap - work done in accordance with codeCertifiedView ↗
08/31/2022Certified Water and Sanitary-WS-Fixtures-FinishCertifiedView ↗
08/30/2022Pass-Final CND-Occupancy InspectionPassView ↗
08/29/2022Pass-Final PL - Up to 3 Requested FloorsPassView ↗
08/19/2022Certified Gas-Gas-Piping-RoughingCertifiedView ↗
08/11/2022Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
08/11/2022Certified Water and Sanitary-WS-Sanitary Piping-UndergroundCertifiedView ↗
03/18/2022Certified Sprinkler-SP-Fixtures-FinishCertifiedView ↗
03/16/2022Certified Sprinkler-SP-Piping Dry/Wet-Hydrostatic TestCertifiedView ↗
▾Special Inspection Requirements (DOB NOW) — 120
DateRequirementInspectorRole
02/27/2024Structural Stability – Alterations of existing buildings—special
02/27/2024Fenestration areas—energy_progress
02/27/2024Fenestration air leakage—energy_progress
02/27/2024Fenestration and door U-factor and product ratings—energy_progress
02/27/2024Fire-Resistant Penetrations and Joints—special
02/27/2024Energy Code Compliance Inspections—progress
02/27/2024Fire-Resistance Rated Construction—progress
02/27/2024Insulation placement and R values—energy_progress
06/09/2023Fenestration air leakageNARESH MAHANGUenergy_progress
06/09/2023Insulation placement and R valuesNARESH MAHANGUenergy_progress
06/09/2023Energy Code Compliance InspectionsNARESH MAHANGUprogress
06/09/2023Exterior Insulation and Finish Systems (EIFS)NARESH MAHANGUspecial
06/09/2023Structural Stability – Alterations of existing buildingsNARESH MAHANGUspecial
06/09/2023Fire-Resistant Penetrations and JointsNARESH MAHANGUspecial
06/09/2023Fire-Resistance Rated ConstructionNARESH MAHANGUprogress
06/09/2023MasonryNARESH MAHANGUspecial
06/09/2023Lighting controlsNARESH MAHANGUenergy_progress
06/09/2023MeteringNARESH MAHANGUenergy_progress
06/09/2023Maintenance informationNARESH MAHANGUenergy_progress
06/09/2023Air barrier - visual inspectionNARESH MAHANGUenergy_progress
06/09/2023Fenestration areasNARESH MAHANGUenergy_progress
06/09/2023Interior lighting powerNARESH MAHANGUenergy_progress
06/09/2023Fenestration and door U-factor and product ratingsNARESH MAHANGUenergy_progress
06/02/2023Insulation placement and R valuesNARESH MAHANGUenergy_progress
06/02/2023Structural Stability – Alterations of existing buildingsNARESH MAHANGUspecial
Latest 25 of 120.
▾Documents — 224 on file (BIS + DOB NOW)
▸Plans & Drawings14
▸DOB NOWPlans/Sketch13
09/01/2026B00532412-P1Request digital key ↗
09/01/2026B00532412-I1Request digital key ↗
09/01/2026B00532377-I1Request digital key ↗
Showing 3 of 13 on file for this type
▸DOB NOWPlans/Sketch - Place of Assembly1
08/29/2026B00695662-I1Request digital key ↗
▸Applications & Permits18
▸BISWORK PERMIT APPLICATION12
05/10/2013320566954Open ↗
03/25/2013310006089Open ↗
01/15/2013320566954Open ↗
Showing 3 of 12 on file for this type
▸BISPLAN / WORK APPROVAL APPLICATION6
12/18/2012320566954Open ↗
12/12/2012320751539Open ↗
11/30/2012320751539Open ↗
Showing 3 of 6 on file for this type
▸Zoning, Tax Lot & Property Records3
▸DOB NOWRestrictive Declaration/Easement 11
08/13/2026B00895926-I1Open ↗
▸DOB NOWZD1: DOB Zoning Diagram1
08/13/2026B00895926-I1Open ↗
▸DOB NOWHouse Number Verification: TOPO Stamp1
08/13/2026B00605839-I1Open ↗
▸Seals & Professional Certifications85
▸DOB NOWProgress Inspector Seal & Signature32
09/23/2026B00605839-P6Open ↗
09/17/2026B00532377-I1Open ↗
09/17/2026B00532377-I1Open ↗
Showing 3 of 32 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature18
09/23/2026B00605839-P6Open ↗
09/23/2026B00605839-P6Open ↗
09/17/2026B00532377-I1Open ↗
Showing 3 of 18 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature14
09/01/2026B00532412-P1Open ↗
09/01/2026B00532412-I1Open ↗
09/01/2026B00532377-P1Open ↗
Showing 3 of 14 on file for this type
▸BISTECHNICAL REPORT: RESPONSIBILITY/CERTIFICATION12
07/19/2013320566954Open ↗
07/19/2013320566954Open ↗
07/08/2013310006089Open ↗
Showing 3 of 12 on file for this type
▸BISPROFESSIONAL CERTIFICATION STATEMENT FORM3
04/08/2011320289969Open ↗
10/23/2007310051948Open ↗
08/16/2007310006089Open ↗
▸BISPC FULL REPORT2
10/23/2007310051948Open ↗
08/16/2007310006089Open ↗
▸BISTECHNICAL REPORT: STATEMENT OF RESPONSIBILITY2
08/16/2007310006089Open ↗
08/16/2007310006089Open ↗
▸BISPROFESSIONAL CERTIFIED CHECKLIST2
04/08/2011320289969Open ↗
10/23/2007310051948Open ↗
▸Trade Schedules & Equipment21
▸BISSELF-CERT PLUMBING NOTICE7
07/18/2013320566954Open ↗
07/08/2013320566954Open ↗
06/28/2013320566954Open ↗
Showing 3 of 7 on file for this type
▸BISSCHEDULE B - PLUMBING5
12/18/2012320566954Open ↗
11/09/2012320566954Open ↗
10/31/2011320289969Open ↗
Showing 3 of 5 on file for this type
▸BISEQUIPMENT USE APPLICATION/PERMIT3
07/19/2013320566954Open ↗
07/19/2013320566954Open ↗
07/08/2013310006089Open ↗
▸BISWATER METER PERMIT : DEP-METER2
07/08/2013320566954Open ↗
07/08/2013320566954Open ↗
▸BISRPZ/DDCV TEST REPORT : GEN215B1
07/08/2013320566954Open ↗
▸BISEQUIPMENT USE PERMITS1
07/08/2013310006089Open ↗
▸BISFA - FDNY APPROVAL : FD-FAA1
08/08/2013320751539Open ↗
▸BISSPRINKLER INSP REPORT : FP-851
06/13/2013320566954Open ↗
▸Safety & Tenant Protection7
▸DOB NOWStreet Tree Checklist6
08/27/2026B00605839-P1Open ↗
08/27/2026B00605839-P8Open ↗
08/27/2026B00605839-P6Open ↗
Showing 3 of 6 on file for this type
▸BISSTREET TREE CHECKLIST1
11/09/2012320566954Open ↗
▸Environmental & Asbestos18
▸DOB NOWDEP ACP-5: Asbestos Assessment Report13
09/01/2026B00532412-P1Open ↗
09/01/2026B00532412-I1Open ↗
09/01/2026B00532377-P1Open ↗
Showing 3 of 13 on file for this type
▸BISTHIS IS 'NOT AN ASBESTOS PROJECT'2
04/08/2011320289969Open ↗
08/16/2007310006089Open ↗
▸BISACP5 ASBESTOS: CERTIFICATION (DEP ACP5)2
11/09/2012320566954Open ↗
11/09/2012320566954Open ↗
▸BISASBESTOS EXEMPTION CERTIFICATION LETTER1
10/23/2007310051948Open ↗
▸Energy Compliance8
▸DOB NOWEN2: As Built Energy Analysis.4
08/13/2026B00532377-I1Open ↗
08/13/2026B00532412-I1Open ↗
08/13/2026B00605839-I1Open ↗
Showing 3 of 4 on file for this type
▸BISTECHNICAL REPORT: ENERGY CODE PROGRESS INSPS2
07/19/2013320566954Open ↗
01/08/2013320566954Open ↗
▸BISTR8: Energy Code Progress Inspections1
12/04/2012320566954Open ↗
▸BISAS-BUILT ENERGY ANALYSIS1
07/19/2013320566954Open ↗
▸Approvals, Objections & Sign-offs15
▸BISCERTIFICATE OF OCCUPANCY/LOC: REQUEST6
01/21/2014320566954Open ↗
08/28/2013320751539Open ↗
07/08/2013310006089Open ↗
Showing 3 of 6 on file for this type
▸BISADMINISTRATIVE OBJECTIONS5
11/30/2012320751539Open ↗
11/09/2012320566954Open ↗
04/08/2011320289969Open ↗
Showing 3 of 5 on file for this type
▸BISLETTERS - SUPPORTING DOCUMENTATION2
08/28/2013320751539Open ↗
07/19/2013320566954Open ↗
▸BISTAP LETTER - DOM SVC : DEP-DOM1
07/08/2013320566954Open ↗
▸BISSCHEDULE A - OCCUPANCY / USE1
11/09/2012320566954Open ↗
▸Cost, Insurance & Ownership13
▸BISCOST AFFIDAVIT13
08/28/2013320751539Open ↗
07/19/2013320566954Open ↗
07/08/2013310006089Open ↗
Showing 3 of 13 on file for this type
▸Filing & Intake Forms10
▸BISADDITIONAL INFORMATION7
05/09/2013320566954Open ↗
05/02/2013320566954Open ↗
04/30/2013320566954Open ↗
Showing 3 of 7 on file for this type
▸BISEFILING COVER SHEET3
11/30/2012320751539Open ↗
11/09/2012320566954Open ↗
04/08/2011320289969Open ↗
▸Other Documents12
▸DOB NOWProperty Ownership Certification6
08/27/2026B00605839-P1Open ↗
08/27/2026B00605839-P8Open ↗
08/27/2026B00605839-P6Open ↗
Showing 3 of 6 on file for this type
▸BISPLOT DIAGRAM2
11/09/2012320566954Open ↗
12/12/2012320566954Open ↗
▸DOB NOWSite Survey: Initial1
08/13/2026B00895926-I1Open ↗
▸DOB NOWAlternate Plan 11
08/29/2026B00695662-I1Open ↗
▸DOB NOWLocal Law 92/94 of 2019 Sustainable Roof Zone1
08/13/2026B00895926-I1Open ↗
▸DOB NOWPlot Diagram1
08/13/2026B00895926-I1Open ↗