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Two family converted from one family
439 CLASSON AVENUE
BROOKLYN · BIN 3056525
💬 Discuss this project
1899Year Built
3Stories
B3Building Class
R6BZoning
2,470 sfGross Floor Area
2Units
5 Open Violations ▸FDNY Report ↗
Two family converted from one family · 1,260 sf lot · 1.96 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
A & D GENERAL CONTRACTORS INC703/22/2026
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
02/27/2020$1.6M—Private party → Private party$644/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
FL&M ENGINEERING DESIGN &INSPECTION104/22/2022
ATELIER ARCHITECTURE 64, PLLC103/22/2021
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
GREEN STUDIO203/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
A & D GENERAL CONTR INCGeneral Contractor603/21/2026
BT'S PLUMBING AND HEATINGPlumbing207/08/2026
POWER SURGE ELECTRIC, INCElectrical103/22/2026
Building Lifecycle
All (12)Filed (2)Permit Issued (4)Signed Off (1)Violation (5)
03/24/2023
Signed off — Alteration
B00723320-I1
05/17/2022
Permit issued — Plumbing
B00481928-I1-PL
04/22/2022
Filed — Alteration
B00723320-I1
04/22/2022
Permit issued — Sidewalk Shed
B00723320-I1-SF
04/22/2022
Permit issued — Sidewalk Shed
B00723320-I1-SH
03/30/2021
Permit issued — Plumbing
B00481928-I1-PL
03/22/2021
Filed — Alteration
B00481928-I1
01/11/2006
Violation issued (HPD, open)
B
02/02/2004
Violation issued (HPD, open)
B
02/02/2004
Violation issued (HPD, open)
B
02/02/2004
Violation issued (HPD, open)
B
02/02/2004
Violation issued (HPD, open)
A
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWPlumbingSigned-offBT'S PLUMBING AND HEATING05/17/2022
DOB NOWSidewalk ShedSigned-offA & D GENERAL CONTR INC04/22/2022
DOB NOWSidewalk ShedSigned-offA & D GENERAL CONTR INC04/22/2022
DOB NOWPlumbingSigned-offBT'S PLUMBING AND HEATING03/30/2021
BISOTISSUEDCMC1 CORP11/05/2021
BISOTISSUEDCMC1 CORP02/04/2021
1 project · most recent 05/20/2021
General Wiring
FiledStatusContractorScope
05/20/2021CompletePOWER SURGE ELECTRIC, INCGeneral Wiring
Nothing on file for this building.
▾Documents — 37 on file (BIS + DOB NOW)
▸Plans & Drawings2
▸DOB NOWPlans/Sketch2
09/01/2026B00481928-I1Request digital key ↗
08/29/2026B00723320-I1Request digital key ↗
▸Applications & Permits7
▸BISPLAN / WORK APPROVAL APPLICATION3
01/08/2021340737867Open ↗
12/16/2019340410727Open ↗
10/06/2016340410727Open ↗
▸BISPLAN - WORK & PERMITS - SUPPPORTING DOCUMENTATION3
05/23/2017340410727Open ↗
05/04/2017340410727Open ↗
10/06/2016340410727Open ↗
▸BISWORK PERMIT APPLICATION1
02/04/2021340737867Open ↗
▸Seals & Professional Certifications4
▸BISAPPLICANT OWNER SIGNATURE2
10/22/2020340737867Open ↗
10/06/2016340410727Open ↗
▸DOB NOWDPL-1: Design Professional Seal & Signature2
09/01/2026B00481928-I1Open ↗
08/13/2026B00723320-I1Open ↗
▸Trade Schedules & Equipment1
▸BISSCHEDULE B - PLUMBING1
10/06/2016340410727Open ↗
▸Environmental & Asbestos3
▸BISASBESTOS: COMPLETION OR CLOSEOUT (ACP20/21/5)1
10/06/2016340410727Open ↗
▸BISASBESTOS: CERTIFICATION (DEP ACP5)1
09/10/2020340737867Open ↗
▸DOB NOWDEP ACP-5: Asbestos Assessment Report1
09/01/2026B00481928-I1Open ↗
▸Energy Compliance4
▸BISTECHNICAL REPORT: ENERGY CODE - RESPONSIBILITY4
11/18/2020340737867Open ↗
10/30/2020340737867Open ↗
04/21/2017340410727Open ↗
Showing 3 of 4 on file for this type
▸Inspections & Test Reports3
▸BISTECHNICAL REPORT: RESPONSIBILITY3
11/18/2020340737867Open ↗
10/30/2020340737867Open ↗
04/21/2017340410727Open ↗
▸Approvals, Objections & Sign-offs1
▸BISLETTERS - SUPPORTING DOCUMENTATION1
01/14/2021340737867Open ↗
▸Cost, Insurance & Ownership1
▸BISCOST AFFIDAVIT1
11/18/2020340737867Open ↗
▸Filing & Intake Forms11
▸BISADDITIONAL INFORMATION8
11/18/2020340737867Open ↗
11/04/2020340737867Open ↗
07/25/2017340410727Open ↗
Showing 3 of 8 on file for this type
▸BISEFILING JOB APPLICATION COVER SHEET2
10/22/2020340737867Open ↗
10/06/2016340410727Open ↗
▸BISBOROUGH INTAKE FORM1
12/16/2019340410727Open ↗