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Four families
420 JEFFERSON AVENUE
BROOKLYN · Bedford-Stuyvesant (East) · BIN 3329533
💬 Discuss this project
1900Year Built
3Stories
C3Building Class
R6BZoning
—Gross Floor Area
4Units
53 Open Violations ▸FDNY Report ↗
Four families · Owner of record: R SQUARED DEVELOPERS LLC · 1.98 FAR built · Flood zone X
Locations of Work
No floor-level scope or drawing coverage on file for this building.
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
R SQUARED DEVELOPERS LLC403/22/2026
Building Lifecycle
All (60)Violation (60)
09/03/2026
Violation issued (HPD, open)
B
09/03/2026
Violation issued (HPD, open)
B
09/03/2026
Violation issued (HPD, open)
B
05/12/2026
Violation issued (HPD, open)
A
05/12/2026
Violation issued (HPD, open)
A
05/12/2026
Violation issued (HPD, open)
A
05/12/2026
Violation issued (HPD, open)
B
05/12/2026
Violation issued (HPD, open)
A
05/12/2026
Violation issued (HPD, closed)
C
05/12/2026
Violation issued (HPD, open)
C
05/12/2026
Violation issued (HPD, open)
A
05/12/2026
Violation issued (HPD, open)
A
05/11/2026
Violation issued (HPD, open)
B
05/11/2026
Violation issued (HPD, open)
B
05/11/2026
Violation issued (HPD, open)
C
05/01/2026
Violation issued (HPD, open)
A
05/01/2026
Violation issued (HPD, open)
B
05/01/2026
Violation issued (HPD, open)
B
05/01/2026
Violation issued (HPD, closed)
C
05/01/2026
Violation issued (HPD, open)
B
05/01/2026
Violation issued (HPD, open)
B
05/01/2026
Violation issued (HPD, open)
B
11/19/2025
Violation issued (HPD, closed)
I
11/06/2025
Violation issued (HPD, open)
B
11/06/2025
Violation issued (HPD, open)
B
06/10/2025
Violation issued (HPD, closed)
A
02/06/2025
Violation issued (HPD, open)
B
02/06/2025
Violation issued (HPD, open)
C
02/06/2025
Violation issued (HPD, closed)
A
11/27/2024
Violation issued (HPD, closed)
I
08/03/2024
Violation issued (HPD, closed)
A
08/03/2024
Violation issued (HPD, closed)
A
04/10/2024
Violation issued (HPD, closed)
A
12/20/2023
Violation issued (HPD, closed)
A
12/20/2023
Violation issued (HPD, closed)
A
12/20/2023
Violation issued (HPD, open)
C
12/20/2023
Violation issued (HPD, closed)
A
12/20/2023
Violation issued (HPD, closed)
A
12/20/2023
Violation issued (HPD, closed)
A
12/20/2023
Violation issued (HPD, closed)
A
11/21/2023
Violation issued (HPD, closed)
I
10/18/2023
Violation issued (HPD, open)
B
10/18/2023
Violation issued (HPD, open)
B
10/18/2023
Violation issued (HPD, open)
A
10/18/2023
Violation issued (HPD, open)
A
10/18/2023
Violation issued (HPD, open)
B
10/18/2023
Violation issued (HPD, open)
A
10/18/2023
Violation issued (HPD, open)
A
10/18/2023
Violation issued (HPD, open)
B
10/18/2023
Violation issued (HPD, open)
A
10/18/2023
Violation issued (HPD, open)
A
10/18/2023
Violation issued (HPD, open)
A
10/18/2023
Violation issued (HPD, open)
B
10/18/2023
Violation issued (HPD, open)
C
10/18/2023
Violation issued (HPD, open)
B
10/18/2023
Violation issued (HPD, open)
B
10/18/2023
Violation issued (HPD, open)
A
10/18/2023
Violation issued (HPD, closed)
A
10/18/2023
Violation issued (HPD, open)
C
10/18/2023
Violation issued (HPD, open)
A
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
BIS—ISSUEDIMPACT BUILDERS CORP04/13/2016
BISPLISSUEDPLBG P & H INC04/13/2016
BISPLISSUEDPLBG P & H INC01/20/2016
BISOTISSUEDIMPACT BUILDERS CORP11/25/2015
BISEQISSUEDIMPACT BUILDERS CORP10/07/2015
Nothing on file for this building.
Nothing on file for this building.
▾Documents — 112 on file (BIS + DOB NOW)
▸Applications & Permits26
▸BISPLAN / WORK APPROVAL APPLICATION16
07/13/2017321285257Open ↗
12/27/2016321285257Open ↗
10/28/2016340311148Open ↗
Showing 3 of 16 on file for this type
▸BISWORK PERMIT APPLICATION6
07/06/2016321285257Open ↗
04/14/2016321285257Open ↗
04/14/2016321285257Open ↗
Showing 3 of 6 on file for this type
▸BISNon-Directive 14 Construction Sign Off Including Sign Applications2
10/28/2016340329889Open ↗
10/28/2016340311148Open ↗
▸BISCERTIFICATE OF OCCUPANCY: APPLICATION2
04/04/2017321285257Open ↗
11/04/2016321285257Open ↗
▸Seals & Professional Certifications14
▸BISTECHNICAL REPORT: RESPONSIBILITY/CERTIFICATION8
10/24/2016340329889Open ↗
10/24/2016340311148Open ↗
09/09/2016321285257Open ↗
Showing 3 of 8 on file for this type
▸BISPROFESSIONAL CERTIFICATION STATEMENT2
11/24/2015340329889Open ↗
10/05/2015340311148Open ↗
▸BISTECHNICAL REPORT STATEMENT OF RESPONSIBILITY2
11/24/2015340329889Open ↗
10/05/2015340311148Open ↗
▸BISREQUIRED ITEMS CHECKLIST FOR PROFESSIONAL CERTIFICATION2
11/24/2015340329889Open ↗
10/05/2015340311148Open ↗
▸Trade Schedules & Equipment4
▸BISSCHEDULE B - PLUMBING2
11/24/2015340329889Open ↗
07/15/2009320043635Open ↗
▸BISSCHEDULE B - PLUMBING/SPRINKLER/STANDPIPE2
09/09/2016321285257Open ↗
12/16/2015321285257Open ↗
▸Safety & Tenant Protection11
▸BISSTREET TREE CHECKLIST4
04/04/2017321285257Open ↗
09/09/2016321285257Open ↗
12/16/2015321285257Open ↗
Showing 3 of 4 on file for this type
▸BISANTI-HARASSMENT CHECKLIST3
12/16/2015321285257Open ↗
11/24/2015340329889Open ↗
10/05/2015340311148Open ↗
▸BISSRO MD ANTI-HARASSMENT CHECKLIST3
11/24/2015340329889Open ↗
10/05/2015340311148Open ↗
10/05/2015340311148Open ↗
▸BISHPD: SRO MD CERTIFICATE OF NO HARASSMENT1
10/05/2015340311148Open ↗
▸Environmental & Asbestos4
▸BISASBESTOS: CERTIFICATION (DEP ACP5)2
12/16/2015321285257Open ↗
11/24/2015340329889Open ↗
▸BISTHIS IS 'NOT AN ASBESTOS PROJECT'1
07/15/2009320043635Open ↗
▸BISASBESTOS EXEMPTION CERTIFICATION LETTER1
06/08/2009320021276Open ↗
▸Energy Compliance12
▸BISTECHNICAL REPORT: ENERGY CODE PROGRESS INSPS5
10/24/2016340329889Open ↗
09/09/2016321285257Open ↗
07/05/2016321285257Open ↗
Showing 3 of 5 on file for this type
▸BISAS-BUILT ENERGY ANALYSIS4
10/28/2016340329889Open ↗
08/25/2016340329889Open ↗
07/14/2016321285257Open ↗
Showing 3 of 4 on file for this type
▸BISTECHNICAL REPORT: ENERGY CODE - RESPONSIBILITY1
11/24/2015340329889Open ↗
▸BISNYCECC ANALYSIS1
11/24/2015340329889Open ↗
▸BISTECHNICAL REPORT STATEMENT OF RESPONSIBILITY FOR ENERGY CODE PROGRESS INSPECTIONS1
11/24/2015340329889Open ↗
▸Inspections & Test Reports2
▸BISTECHNICAL REPORT: RESPONSIBILITY2
11/24/2015340329889Open ↗
10/05/2015340311148Open ↗
▸Approvals, Objections & Sign-offs16
▸BISCERTIFICATE OF OCCUPANCY/LOC: REQUEST6
05/23/2017321285257Open ↗
05/11/2017321285257Open ↗
02/07/2017321285257Open ↗
Showing 3 of 6 on file for this type
▸BISSCHEDULE A - OCCUPANCY / USE4
07/13/2017321285257Open ↗
09/09/2016321285257Open ↗
12/16/2015321285257Open ↗
Showing 3 of 4 on file for this type
▸BISLETTERS - SUPPORTING DOCUMENTATION3
04/12/2017321285257Open ↗
11/24/2015340329889Open ↗
10/05/2015340311148Open ↗
▸BISADMINISTRATIVE OBJECTIONS3
02/05/2016321285257Open ↗
07/15/2009320043635Open ↗
06/08/2009320021276Open ↗
▸Cost, Insurance & Ownership7
▸BISCOST AFFIDAVIT7
05/23/2017321285257Open ↗
04/04/2017321285257Open ↗
10/28/2016340329889Open ↗
Showing 3 of 7 on file for this type
▸Filing & Intake Forms10
▸BISEFILING COVER SHEET4
10/03/2016321458686Open ↗
12/11/2015321285257Open ↗
07/15/2009320043635Open ↗
Showing 3 of 4 on file for this type
▸BISADDITIONAL INFORMATION4
11/04/2016321285257Open ↗
10/27/2016340311148Open ↗
10/27/2016340329889Open ↗
Showing 3 of 4 on file for this type
▸BISEFILING JOB APPLICATION COVER SHEET2
11/24/2015340329889Open ↗
10/05/2015340311148Open ↗
▸Other Documents6
▸BISPLOT DIAGRAM3
04/12/2017321285257Open ↗
10/03/2016321458686Open ↗
12/16/2015321285257Open ↗
▸BISCONSTRUCTION - SUPPORTING DOCUMENTATION2
12/20/2016321285257Open ↗
11/24/2015340329889Open ↗
▸BISEXTERNAL FORMS - SUPPORTING DOCUMENTATION1
11/04/2016321285257Open ↗