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One family attached or semi-detached
20 WINTHROP STREET
BROOKLYN · BIN 3115803
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1925Year Built
2Stories
A5Building Class
R6Zoning
1,648 sfGross Floor Area
1Units
0 Open ViolationsFDNY Report ↗
One family attached or semi-detached · 2,253 sf lot · 0.73 FAR built · Flood zone X
Locations of Work
ArchitectureElectricalGeneral
Roof5p · 2 filings · 11 docs
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
09/18/2023$1.8M—Private party → Private party$1,092/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
TOM PETERSEN ARCHITECT, LLC111/17/2025
UNISOLAR106/25/2025
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
CENTURION SOLAR ENERGYGeneral Contractor303/21/2026
SOLAR CONTRACTING LLCGeneral Contractor104/09/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
THOMAS PETERSEN ARCHITECT7854111/17/2025
CENTURION SOLAR ENERGY LL9475106/25/2025
Building Lifecycle
All (6)Filed (2)Permit Issued (2)Signed Off (1)Violation (1)
05/12/2026
Signed off — Alteration
SCOPE OF WORK IS SOLELY FOR THE INSTALLATION OF THE SOLAR ELECTRONIC GENERATING SYSTEM. ALL OTHER WORK IS NOT TO BE RELIED UPON AS BEINGAPPROVED AND/OR PERMITTED BY THE NYC DEPARTMENT OF BUILDINGS.
B01318922-I1
12/05/2025
Permit issued — Solar
B01318922-I1-SL
11/17/2025
Filed — Alteration
SCOPE OF WORK IS SOLELY FOR THE INSTALLATION OF THE SOLAR ELECTRONIC GENERATING SYSTEM. ALL OTHER WORK IS NOT TO BE RELIED UPON AS BEINGAPPROVED AND/OR PERMITTED BY THE NYC DEPARTMENT OF BUILDINGS.
B01318922-I1
07/11/2025
Permit issued — Solar
B01244098-I1-SL
06/25/2025
Filed — Alteration
SCOPE OF WORK IS SOLELY FOR THE INSTALLATION OF THE SOLAR ELECTRONICGENERATING SYSTEM. ALL OTHER WORK IS NOT TO BE RELIED UPON AS BEINGAPPROVED AND/OR PERMITTED BY THE NYC DEPARTMENT OF BUILDINGS.*NO CHANGE TO USE, EGRESS OR OCCUPANCY.*
B01244098-I1
12/02/1988
Violation issued (DOB, closed)
V*-DOB VIOLATION - DISMISSED
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWSolarSigned-offSOLAR CONTRACTING LLC12/05/2025
DOB NOWSolarPermit IssuedCENTURION SOLAR ENERGY07/11/2025
BIS—ISSUEDN\A12/06/2006
2 projects · most recent 11/17/2025
FiledStatusContractorScope
11/17/2025CompleteSOLAR ELEC CONTRACTNG LLC—
06/22/2025Permit IssuedBERGER QUALITY ELEC'L CON—
2 projects · most recent 11/17/2025
FiledStatusContractorScope
11/17/2025Signed-offSOLAR CONTRACTING LLC12 panels, 5.16 kw, 548.91 roof_area_sqft
06/25/2025Permit IssuedCENTURION SOLAR ENERGY6 panels, 2.55 kw, 126.11 roof_area_sqft
▾Special Inspection Requirements (DOB NOW) — 4
DateRequirementInspectorRole
11/17/2025Air barrier - visual inspectionTOM PETERSENenergy_progress
11/13/2025Fire-Resistant Penetrations and JointsTOM PETERSENspecial
11/13/2025Energy Code Compliance InspectionsTOM PETERSENprogress
11/13/2025FinalTOM PETERSENprogress
▾Documents — 11 on file (BIS + DOB NOW)
▸Plans & Drawings2
▸DOB NOWPlans/Sketch2
08/21/2026B01244098-I1Request digital key ↗
08/19/2026B01318922-I1Request digital key ↗
▸Seals & Professional Certifications6
▸DOB NOWProgress Inspector Seal & Signature3
08/22/2026B01318922-I1Open ↗
08/22/2026B01318922-I1Open ↗
08/22/2026B01318922-I1Open ↗
▸DOB NOWDPL-1: Design Professional Seal & Signature2
08/13/2026B01244098-I1Open ↗
08/13/2026B01318922-I1Open ↗
▸DOB NOWSpecial Inspector Seal & Signature1
08/22/2026B01318922-I1Open ↗
▸Environmental & Asbestos2
▸DOB NOWDEP ACP-5: Asbestos Assessment Report2
08/13/2026B01318922-I1Open ↗
08/13/2026B01244098-I1Open ↗
▸Approvals, Objections & Sign-offs1
▸DOB NOWUtility Company Final Acceptance Letter1
08/19/2026B01318922-I1Open ↗