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Two family converted from one family
1948 81ST STREET
BROOKLYN · Bensonhurst · BIN 3163846
💬 Discuss this project
1920Year Built
2Stories
B3Building Class
R5Zoning
1,838 sfGross Floor Area
2Units
Two family converted from one family · 2,358 sf lot · 0.78 FAR built · Flood zone X
Locations of Work
ArchitectureElectricalPlumbing
Names shown beside floors are taken automatically from the text of filed documents and may be incomplete or wrong.
Permit Issued — active, not yet Signed-off
Floor 2Under Construction4p · 1 filing · 12 docs
Floor 1Under Construction4p · 1 filing · 12 docs
CellarUnder Construction9p · 1 filing · 12 docs
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
Innospark Design310/13/2026
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
07/01/2026$1.4M—Private party → Private party$754/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
Aaron McDonald Architect207/29/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
Mercury Building AssociatesGeneral Contractor107/30/2026
Smart Plumbing & HeatingPlumbing109/09/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
Aaron McDonald Architect5118207/29/2026
Building Lifecycle
All (20)Filed (2)Permit Issued (2)Special Inspection (16)
09/08/2026
Permit issued — Plumbing
B01436017-S1-PL
07/29/2026
Filed — Alteration
INSTALL GAS AND PLUMBING FIXTURES IN THE EXISTING 2 STORY BUILDING. PLUMBING WORKS AS PER PLAN. NO CHANGE IN EGRESS, USE, OR OCCUPANCY.
B01436017-S1
07/29/2026
Permit issued — General Construction
B01436017-I1-GC-CX
07/28/2026
Filed — Alteration
INSTALL GAS AND PLUMBING FIXTURES IN THE EXISTING 2 STORY BUILDING. PLUMBING WORKS AS PER PLAN. NO CHANGE IN EGRESS, USE, OR OCCUPANCY.
B01436017-I1
07/28/2026
Special inspection requirement — Energy Code Compliance Inspections
Aaron McDonald
07/28/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
Aaron McDonald
07/28/2026
Special inspection requirement — HVAC-R and service water heating equipment
Aaron McDonald
07/28/2026
Special inspection requirement — HVAC-R and service water piping design and insulation
Aaron McDonald
07/28/2026
Special inspection requirement — HVAC-R and service water heating system controls
Aaron McDonald
07/27/2026
Special inspection requirement — HVAC-R and service water heating equipment
Aaron McDonald
07/27/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
Aaron McDonald
07/27/2026
Special inspection requirement — Energy Code Compliance Inspections
Aaron McDonald
07/27/2026
Special inspection requirement — Fire-Resistance Rated Construction
Aaron McDonald
07/27/2026
Special inspection requirement — HVAC-R and service water piping design and insulation
Aaron McDonald
07/27/2026
Special inspection requirement — Insulation placement and R values
Aaron McDonald
07/27/2026
Special inspection requirement — HVAC-R and service water heating system controls
Aaron McDonald
07/27/2026
Special inspection requirement — Interior lighting power
Aaron McDonald
07/27/2026
Special inspection requirement — Maintenance information
Aaron McDonald
07/24/2026
Special inspection requirement — Final
Aaron McDonald
07/24/2026
Special inspection requirement — Mechanical Systems
Aaron McDonald
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWPlumbingPermit IssuedSmart Plumbing & Heating09/08/2026
DOB NOWGeneral ConstructionPermit IssuedMercury Building Associates07/29/2026
1 project · most recent 07/29/2026
Gas Water/Sanitary
FiledStatusContractorScope
07/29/2026Permit IssuedHF Group Plumbing & SpnklerGas, Water/Sanitary
1 project · most recent 07/20/2026
General Wiring
FiledStatusContractorScope
07/20/2026Permit IssuedE D ElectricalGeneral Wiring
▾Special Inspection Requirements (DOB NOW) — 16
DateRequirementInspectorRole
07/28/2026Energy Code Compliance InspectionsAaron McDonaldprogress
07/28/2026Fire-Resistant Penetrations and JointsAaron McDonaldspecial
07/28/2026HVAC-R and service water heating equipmentAaron McDonaldenergy_progress
07/28/2026HVAC-R and service water piping design and insulationAaron McDonaldenergy_progress
07/28/2026HVAC-R and service water heating system controlsAaron McDonaldenergy_progress
07/27/2026HVAC-R and service water heating equipmentAaron McDonaldenergy_progress
07/27/2026Fire-Resistant Penetrations and JointsAaron McDonaldspecial
07/27/2026Energy Code Compliance InspectionsAaron McDonaldprogress
07/27/2026Fire-Resistance Rated ConstructionAaron McDonaldprogress
07/27/2026HVAC-R and service water piping design and insulationAaron McDonaldenergy_progress
07/27/2026Insulation placement and R valuesAaron McDonaldenergy_progress
07/27/2026HVAC-R and service water heating system controlsAaron McDonaldenergy_progress
07/27/2026Interior lighting powerAaron McDonaldenergy_progress
07/27/2026Maintenance informationAaron McDonaldenergy_progress
07/24/2026FinalAaron McDonaldprogress
07/24/2026Mechanical SystemsAaron McDonaldspecial
▾Documents — 12 on file (BIS + DOB NOW)
▸Plans & Drawings2
▸DOB NOWPlans/Sketch2
08/16/2026B01436017-S1Request digital key ↗
08/16/2026B01436017-I1Request digital key ↗
▸Seals & Professional Certifications8
▸DOB NOWProgress Inspector Seal & Signature4
08/25/2026B01436017-I1Open ↗
08/25/2026B01436017-I1Open ↗
08/22/2026B01436017-S1Open ↗
Showing 3 of 4 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature2
08/16/2026B01436017-S1Open ↗
08/16/2026B01436017-I1Open ↗
▸DOB NOWSpecial Inspector Seal & Signature2
08/25/2026B01436017-I1Open ↗
08/22/2026B01436017-S1Open ↗
▸Environmental & Asbestos2
▸DOB NOWDEP ACP-5: Asbestos Assessment Report2
08/16/2026B01436017-S1Open ↗
08/16/2026B01436017-I1Open ↗