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City residence, one family
454 WILLIAMS AVENUE
BROOKLYN · BIN 3393380
💬 Discuss this project
1997Year Built
2Stories
A4Building Class
R6Zoning
1,332 sfGross Floor Area
1Units
FDNY Report ↗
City residence, one family · 1,800 sf lot · 0.74 FAR built · Flood zone X
Locations of Work
Architecture
Roof1p · 1 filing · 3 docs
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
CHUN FENG, ARCHITECT111/04/2025
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
SUSTAINABLE STRATEGIESGeneral Contractor203/21/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
SQ. ARCH, LLC4802111/04/2025
Building Lifecycle
All (8)Filed (1)Permit Issued (1)Signed Off (1)Special Inspection (5)
06/04/2026
Signed off — Alteration
B01313570-I1
11/05/2025
Permit issued — Solar
B01313570-I1-SL
11/04/2025
Filed — Alteration
B01313570-I1
11/04/2025
Special inspection requirement — Final
Chun Feng
11/04/2025
Special inspection requirement — Post-installed Anchors
Chun Feng
11/04/2025
Special inspection requirement — Fire-Resistant Penetrations and Joints
Chun Feng
11/04/2025
Special inspection requirement — Energy Code Compliance Inspections
Chun Feng
11/04/2025
Special inspection requirement — Air barrier - visual inspection
Chun Feng
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWSolarSigned-offSUSTAINABLE STRATEGIES11/05/2025
BISPLISSUEDJ.E.S. PLBG & HTG CORP10/06/1997
BIS—ISSUEDMONADNOCK CONSTRUCTION IN05/29/1997
1 project · most recent 01/28/2026
FiledStatusContractorScope
01/28/2026CompleteSOURCE ELECTRIC INC1 meters
▾Special Inspection Requirements (DOB NOW) — 5
DateRequirementInspectorRole
11/04/2025FinalChun Fengprogress
11/04/2025Post-installed AnchorsChun Fengspecial
11/04/2025Fire-Resistant Penetrations and JointsChun Fengspecial
11/04/2025Energy Code Compliance InspectionsChun Fengprogress
11/04/2025Air barrier - visual inspectionChun Fengenergy_progress
▾Documents — 3 on file (BIS + DOB NOW)
▸Plans & Drawings1
▸DOB NOWPlans/Sketch1
08/20/2026B01313570-I1Request digital key ↗
▸Seals & Professional Certifications1
▸DOB NOWDPL-1: Design Professional Seal & Signature1
08/13/2026B01313570-I1Open ↗
▸Approvals, Objections & Sign-offs1
▸DOB NOWUtility Company Final Acceptance Letter1
08/20/2026B01313570-I1Open ↗