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Two family converted from one family
433 CLASSON AVENUE
BROOKLYN · BIN 3056529
💬 Discuss this project
1899Year Built
3Stories
B3Building Class
R6BZoning
2,630 sfGross Floor Area
2Units
Two family converted from one family · 1,280 sf lot · 2.05 FAR built · Flood zone X
Locations of Work
ElectricalGeneral
Roof2p · 1 filing · 7 docs
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
03/04/2014$1.6M—— → —$621/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
NY BUILDING ASSOCIATES INC207/25/2025
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
BROOKLYN SOLARWORKS203/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
BROOKLYN SOLARWORKS LLCGeneral Contractor203/21/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
NKM ENGINEERING PLLC6244207/25/2025
Building Lifecycle
All (4)Filed (2)Permit Issued (1)Signed Off (1)
07/28/2025
Signed off — Alteration
INSTALLATION OF SOLAR PV SYSTEM. NO CHANGE TO USE, EGRESS, OR OCCUPANCY.
B01222894-I1
07/25/2025
Filed — Alteration
INSTALLATION OF SOLAR PV SYSTEM. NO CHANGE TO USE, EGRESS, OR OCCUPANCY.
B01222894-P1
05/19/2025
Permit issued — Solar
B01222894-I1-SL
05/12/2025
Filed — Alteration
INSTALLATION OF SOLAR PV SYSTEM. NO CHANGE TO USE, EGRESS, OR OCCUPANCY.
B01222894-I1
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWSolarSigned-offBROOKLYN SOLARWORKS LLC05/19/2025
BISEQISSUEDICON BUILDERS INC05/02/2016
BISOTISSUEDICON BUILDERS INC05/02/2016
BISPLISSUEDGREGG NY PLUMBING, INC12/17/2014
BISOTISSUEDAZCC BUILDERS INC08/27/2014
BISMHISSUEDAZCC BUILDERS INC08/27/2014
BISPLISSUEDALJER PLBG & HTG CORP04/21/2008
BISOTISSUEDCORNERSTONE INTERIORS INC08/16/2007
BISOTISSUEDCORNERSTONE INTERIORS INC07/25/2007
1 project · most recent 05/08/2025
FiledStatusContractorScope
05/08/2025CompleteBROOKYLN SOLARWORKS, LLC—
Nothing on file for this building.
▾Documents — 53 on file (BIS + DOB NOW)
▸Plans & Drawings2
▸DOB NOWPlans/Sketch2
08/21/2026B01222894-P1Request digital key ↗
08/21/2026B01222894-I1Request digital key ↗
▸Applications & Permits10
▸BISWORK PERMIT APPLICATION6
05/05/2016321291605Open ↗
05/05/2016321291605Open ↗
12/23/2014320994732Open ↗
Showing 3 of 6 on file for this type
▸BISPLAN / WORK APPROVAL APPLICATION4
12/24/2015321291605Open ↗
12/22/2014320994732Open ↗
07/29/2014320994732Open ↗
Showing 3 of 4 on file for this type
▸Seals & Professional Certifications9
▸BISTECHNICAL REPORT: RESPONSIBILITY/CERTIFICATION7
10/26/2017321291605Open ↗
10/26/2017321291605Open ↗
03/09/2016320994732Open ↗
Showing 3 of 7 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature2
08/21/2026B01222894-P1Open ↗
08/21/2026B01222894-I1Open ↗
▸Trade Schedules & Equipment7
▸BISSELF-CERT PLUMBING NOTICE3
06/12/2015320994732Open ↗
03/25/2015320994732Open ↗
03/25/2015320994732Open ↗
▸BISPLUMBING - SUPPORTING DOCUMENTATION2
05/27/2016321291605Open ↗
04/21/2016321291605Open ↗
▸BISSCHEDULE B - PLUMBING/SPRINKLER/STANDPIPE1
12/22/2014320994732Open ↗
▸BISSCHEDULE B - PLUMBING1
07/29/2014320994732Open ↗
▸Safety & Tenant Protection1
▸BISSTREET TREE CHECKLIST1
12/24/2015321291605Open ↗
▸Environmental & Asbestos2
▸DOB NOWDEP ACP-5: Asbestos Assessment Report2
08/21/2026B01222894-P1Open ↗
08/21/2026B01222894-I1Open ↗
▸Energy Compliance5
▸BISTECHNICAL REPORT: ENERGY CODE PROGRESS INSPS3
10/26/2017321291605Open ↗
10/26/2017321291605Open ↗
12/15/2015320994732Open ↗
▸BISAS-BUILT ENERGY ANALYSIS2
10/26/2017321291605Open ↗
12/15/2015320994732Open ↗
▸Approvals, Objections & Sign-offs6
▸BISCERTIFICATE OF OCCUPANCY/LOC: REQUEST3
10/26/2017321291605Open ↗
03/09/2016320994732Open ↗
12/15/2015320994732Open ↗
▸BISADMINISTRATIVE OBJECTIONS1
12/24/2015321291605Open ↗
▸BISLETTERS - SUPPORTING DOCUMENTATION1
07/29/2014320994732Open ↗
▸DOB NOWUtility Company Final Acceptance Letter1
08/13/2026B01222894-I1Open ↗
▸Cost, Insurance & Ownership4
▸BISCOST AFFIDAVIT4
10/26/2017321291605Open ↗
12/24/2015321291605Open ↗
12/15/2015320994732Open ↗
Showing 3 of 4 on file for this type
▸Filing & Intake Forms7
▸BISADDITIONAL INFORMATION3
04/01/2015320994732Open ↗
12/22/2014320994732Open ↗
07/28/2014320994732Open ↗
▸BISEFILING COVER SHEET3
12/24/2015321291605Open ↗
07/29/2014320994732Open ↗
07/29/2014320994732Open ↗
▸BISBOROUGH INTAKE FORM1
10/26/2017321291605Open ↗