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Three families
450 MAC DONOUGH STREET
BROOKLYN · BIN 3047203
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1899Year Built
2Stories
C0Building Class
R6BZoning
2,070 sfGross Floor Area
3Units
FDNY Report ↗
Three families · Owner of record: MARTHA MAYFIELD, TEE MARTHA MAYFIELD LEG ACY TRUST · 1,750 sf lot · 1.18 FAR built · Flood zone X
Locations of Work
Architecture
Permit Issued — active, not yet Signed-off
Floor 2Under Construction1 filing · 4 docs
Floor 1Under Construction1 filing · 4 docs
CellarUnder Construction1 filing · 4 docs
Sub-BasementUnder Construction1 filing · 4 docs
Nothing on file for this building.
Building Lifecycle
All (22)Filed (2)Permit Issued (1)Objection (6)Special Inspection (13)
09/04/2026
Objection raised — Other
09/04/2026
Objection raised — Zoning
09/04/2026
Objection raised — Admin
09/04/2026
Objection raised — Other
09/04/2026
Objection raised — Admin
09/04/2026
Objection raised — Structural
08/27/2026
Filed — Alteration CO
OBTAIN NEW C.O. FOR EXISTING 2-STORY WITH BASEMENT &CELLAR,2-FAMILY DWELLING WITH NEW LAYOUT AS PLAN PROPOSED ONE D.U. ON BASEMENT AND TWO D.U. ON 1ST TO 2ND FLOOR.
B01444826-I1
08/26/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
08/26/2026
Special inspection requirement — Energy Code Compliance Inspections
08/26/2026
Special inspection requirement — Fire-Resistance Rated Construction
08/26/2026
Special inspection requirement — Maintenance information
08/26/2026
Special inspection requirement — Insulation placement and R values
08/26/2026
Special inspection requirement — Air barrier - visual inspection
08/26/2026
Special inspection requirement — Interior lighting power
08/26/2026
Special inspection requirement — Fenestration air leakage
08/26/2026
Special inspection requirement — Fenestration and door U-factor and product ratings
08/26/2026
Special inspection requirement — Metering
08/26/2026
Special inspection requirement — Permanent certificate
08/26/2026
Special inspection requirement — Fenestration areas
08/14/2026
Permit issued — General Construction
B01439554-I1-GC
08/12/2026
Filed — Alteration
INTERIOR DEMOLITION ON EXISTING TWO (2) STORY WITH BASEMENT & CELLAR, TWO (2) FAMILY RESIDENTIAL BUILDING. NO CHANGE OF BUILDING BULK, OCCUPANCY OR EGRESS.
B01439554-I1
07/31/2026
Special inspection requirement — Energy Code Compliance Inspections
CALVIN TRAN
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
MARTHA MAYFIELD, TEE MARTHA MAYFIELD LEG ACY TRUST103/22/2026
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
THOMAS C. TUNG, P.E.108/27/2026
CQ&J CORPORATION108/12/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
ARKENSTONE BUILDERS INCGeneral Contractor108/16/2026
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWGeneral ConstructionPermit IssuedARKENSTONE BUILDERS INC08/14/2026
▾Special Inspection Requirements (DOB NOW) — 13
DateRequirementInspectorRole
08/26/2026Fire-Resistant Penetrations and Joints—special
08/26/2026Energy Code Compliance Inspections—progress
08/26/2026Fire-Resistance Rated Construction—progress
08/26/2026Maintenance information—energy_progress
08/26/2026Insulation placement and R values—energy_progress
08/26/2026Air barrier - visual inspection—energy_progress
08/26/2026Interior lighting power—energy_progress
08/26/2026Fenestration air leakage—energy_progress
08/26/2026Fenestration and door U-factor and product ratings—energy_progress
08/26/2026Metering—energy_progress
08/26/2026Permanent certificate—energy_progress
08/26/2026Fenestration areas—energy_progress
07/31/2026Energy Code Compliance InspectionsCALVIN TRANprogress
▾Documents — 9 on file (BIS + DOB NOW)
▸Plans & Drawings2
▸DOB NOWPlans/Sketch2
09/22/2026B01444826-I1Request digital key ↗
08/16/2026B01439554-I1Request digital key ↗
▸Seals & Professional Certifications3
▸DOB NOWDPL-1: Design Professional Seal & Signature2
09/22/2026B01444826-I1Open ↗
08/16/2026B01439554-I1Open ↗
▸DOB NOWProgress Inspector Seal & Signature1
08/28/2026B01439554-I1Open ↗
▸Safety & Tenant Protection1
▸DOB NOWStreet Tree Checklist1
09/22/2026B01444826-I1Open ↗
▸Environmental & Asbestos2
▸DOB NOWDEP ACP-5: Asbestos Assessment Report2
09/22/2026B01444826-I1Open ↗
08/16/2026B01439554-I1Open ↗
▸Other Documents1
▸DOB NOWProperty Ownership Certification1
09/22/2026B01444826-I1Open ↗