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Museum
Adrian and Ann Wyckoff Onderdonk House
1820 FLUSHING AVENUE · BIN 4081481
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1775Year Built
2Stories
P7Building Class
M1-1Zoning
2,290 sfGross Floor Area
1Units
Museum · Owner of record: GREATER RIDGEWOOD HISTOR SOC INC · 60,886 sf lot · 0.04 FAR built · Flood zone X
Locations of Work
ArchitectureStructural
Permit Issued — active, not yet Signed-off
Floor 2Under Construction11p · 1 filing · 14 docs
Floor 1Under Construction13p · 1 filing · 14 docs
CellarUnder Construction10p · 1 filing · 14 docs
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
NYCDDC203/21/2026
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
H3 HARDY COLLABORATION210/20/2025
POSPISCHIL ARCHITECT109/11/2019
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
CONVERSANO ASSOCIATES, INC.403/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
DRL SERVICES LLCGeneral Contractor309/18/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
MP ENGINEERS & ARCHITECTS1438110/20/2025
Building Lifecycle
All (16)Filed (3)Permit Issued (3)Objection (6)Special Inspection (4)
09/17/2026
Permit issued — Structural
Q01074645-S1-ST
07/21/2026
Permit issued — General Construction
Q01074645-I1-GC
05/28/2026
Permit issued — General Construction
Q01074645-I1-GC
10/20/2025
Filed — Alteration
General construction including restoration of building's lime plaster and wood siding exteriors, window replacement, installation of new gutter and leader and restoration of wood floor, cistern in backyard and brick walkway at front of building.
Q01074645-S1
06/24/2025
Special inspection requirement — Structural Stability – Alterations of existing buildings
JAMES WILSON
05/28/2025
Filed — Alteration
General construction including restoration of building's lime plaster and wood siding exteriors, window replacement, installation of new gutter and leader and restoration of wood floor, cistern in backyard and brick walkway at front of building.
Q01074645-I1
08/07/2024
Special inspection requirement — Structural Wood Frame
JAMES WILSON
07/22/2024
Special inspection requirement — Final
KEVIN POULIN
07/01/2024
Special inspection requirement — Final
JOHN FONTILLAS
09/11/2019
Filed — No Work
Q00216724-I1
09/11/2019
Objection raised — Structural
09/11/2019
Objection resolved — Resolved
09/11/2019
Objection raised — Scope
09/11/2019
Objection resolved — Resolved
09/11/2019
Objection raised — Structural
09/11/2019
Objection resolved — Resolved
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWStructuralPermit IssuedDRL SERVICES LLC09/17/2026
DOB NOWGeneral ConstructionPermit IssuedDRL SERVICES LLC07/21/2026
DOB NOWGeneral ConstructionPermit IssuedDRL SERVICES LLC05/28/2026
BISEQISSUEDB H & B CONSTRUCTION INC04/24/2014
BISEQISSUEDB H & B CONSTRUCTION INC04/24/2014
2 projects · most recent 07/08/2026
General Wiring
FiledStatusContractorScope
07/08/2026Permit IssuedZENA ELECTRIC INCGeneral Wiring
02/15/2018CompleteWILLDAN ELECTRICAL OF NY—
▾Special Inspection Requirements (DOB NOW) — 4
DateRequirementInspectorRole
06/24/2025Structural Stability – Alterations of existing buildingsJAMES WILSONspecial
08/07/2024Structural Wood FrameJAMES WILSONprogress
07/22/2024FinalKEVIN POULINprogress
07/01/2024FinalJOHN FONTILLASprogress
▾Documents — 38 on file (BIS + DOB NOW)
▸Plans & Drawings3
▸DOB NOWPlans/Sketch2
08/20/2026Q01074645-S1Request digital key ↗
08/20/2026Q01074645-I1Request digital key ↗
▸DOB NOWPlans/Sketch - Temporary Place of Assembly1
08/28/2026Q00216724-I1Request digital key ↗
▸Applications & Permits6
▸BISPLAN / WORK APPROVAL APPLICATION2
04/24/2014440140223Open ↗
04/24/2014440140054Open ↗
▸BISWORK PERMIT APPLICATION2
04/24/2014440140223Open ↗
04/24/2014440140054Open ↗
▸DOB NOWLPC Approval/Permit2
08/13/2026Q01074645-S1Open ↗
08/13/2026Q01074645-I1Open ↗
▸Seals & Professional Certifications15
▸BISTECHNICAL REPORT: RESPONSIBILITY/CERTIFICATION3
11/13/2014440140054Open ↗
11/13/2014440140223Open ↗
11/14/2014440140054Open ↗
▸DOB NOWDPL-1: Design Professional Seal & Signature3
08/28/2026Q00216724-I1Open ↗
08/13/2026Q01074645-S1Open ↗
08/13/2026Q01074645-I1Open ↗
▸BISREQUIRED ITEMS CHECKLIST FOR PROFESSIONAL CERTIFICATION2
04/24/2014440140223Open ↗
04/24/2014440140054Open ↗
▸BISPROFESSIONAL CERTIFICATION STATEMENT2
04/24/2014440140223Open ↗
04/24/2014440140054Open ↗
▸BISTECHNICAL REPORT STATEMENT OF RESPONSIBILITY2
04/24/2014440140223Open ↗
04/24/2014440140054Open ↗
▸DOB NOWProgress Inspector Seal & Signature2
08/25/2026Q01074645-I1Open ↗
08/23/2026Q01074645-S1Open ↗
▸DOB NOWSpecial Inspector Seal & Signature1
08/23/2026Q01074645-S1Open ↗
▸Environmental & Asbestos2
▸DOB NOWDEP ACP-5: Asbestos Assessment Report2
08/13/2026Q01074645-S1Open ↗
08/13/2026Q01074645-I1Open ↗
▸Energy Compliance1
▸BISELECTRICAL APPLICATION FOR SIDEWALK SHED LIGHTING1
04/24/2014440140054Open ↗
▸Inspections & Test Reports2
▸BISTECHNICAL REPORT: RESPONSIBILITY2
04/24/2014440140223Open ↗
04/24/2014440140054Open ↗
▸Approvals, Objections & Sign-offs6
▸BISCERTIFICATE OF OCCUPANCY/LOC: REQUEST2
01/08/2015440140223Open ↗
11/13/2014440140054Open ↗
▸BISLANDMARKS APPROVAL2
04/24/2014440140223Open ↗
04/24/2014440140054Open ↗
▸DOB NOWFee Exempt Supporting Document - DOF ACRIS report or BIB letter2
08/13/2026Q01074645-S1Open ↗
08/13/2026Q01074645-I1Open ↗
▸Filing & Intake Forms2
▸BISEFILING JOB APPLICATION COVER SHEET2
04/24/2014440140223Open ↗
04/24/2014440140054Open ↗
▸Other Documents1
▸DOB NOWProof of Historic Building1
08/13/2026Q01074645-I1Open ↗