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Two family converted from one family
1839 77 STREET
BROOKLYN · BIN 3160913
💬 Discuss this project
1925Year Built
2Stories
B3Building Class
R5Zoning
1,368 sfGross Floor Area
2Units
FDNY Report ↗
Two family converted from one family · 3,000 sf lot · 0.46 FAR built · Flood zone X
Locations of Work
ArchitectureMechanicalPlumbing
Permit Issued — active, not yet Signed-off
Floor 2Under Construction6p · 1 filing · 20 docs
Floor 1Under Construction6p · 1 filing · 20 docs
CellarUnder Construction6p · 1 filing · 20 docs
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
WEI STUDIO309/14/2026
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
MHYDESIGN1403/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
NY BUILDING ASSOCIATES INGeneral Contractor407/08/2026
AMERICAN STANDARD P&H CORORP.Plumbing207/08/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
WEI STUDIO7998309/14/2026
Building Lifecycle
All (33)Filed (3)Permit Issued (6)Special Inspection (24)
09/14/2026
Filed — Alteration
GENERAL RENOVATION OF 2-FAMILY HOUSE WITH REPLACE/RELOCATED//NEW PLUMBING FIXTURES AND BOILER AND H.W.H. AS PER PLAN. NO CHANGE IN USE, EGRESS OR OCCUPANCY.
B01236118-P1
08/22/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
Ruoyu Wei
08/22/2026
Special inspection requirement — Energy Code Compliance Inspections
Ruoyu Wei
08/22/2026
Special inspection requirement — HVAC-R and service water piping design and insulation
Ruoyu Wei
08/22/2026
Special inspection requirement — HVAC-R and service water heating system controls
Ruoyu Wei
08/22/2026
Special inspection requirement — Maintenance information
Ruoyu Wei
08/22/2026
Special inspection requirement — HVAC-R and service water heating equipment
Ruoyu Wei
06/03/2026
Permit issued — Mechanical Systems
B01236118-I1-GC
06/03/2026
Permit issued — General Construction
B01236118-I1-MS
06/03/2026
Permit issued — Plumbing
B01236118-S1-PL
06/30/2025
Permit issued — General Construction
B01236118-I1-MS
06/30/2025
Permit issued — Mechanical Systems
B01236118-I1-GC
06/30/2025
Permit issued — Plumbing
B01236118-S1-PL
06/27/2025
Filed — Alteration
GENERAL RENOVATION OF 2-FAMILY HOUSE WITH REPLACE/RELOCATED//NEW PLUMBING FIXTURES AND BOILER AND H.W.H. AS PER PLAN. NO CHANGE IN USE, EGRESS OR OCCUPANCY.
B01236118-I1
06/27/2025
Filed — Alteration
GENERAL RENOVATION OF 2-FAMILY HOUSE WITH REPLACE/RELOCATED//NEW PLUMBING FIXTURES AND BOILER AND H.W.H. AS PER PLAN. NO CHANGE IN USE, EGRESS OR OCCUPANCY.
B01236118-S1
06/04/2025
Special inspection requirement — Mechanical Systems
Ruoyu Wei
06/04/2025
Special inspection requirement — Fire-Resistant Penetrations and Joints
Ruoyu Wei
06/04/2025
Special inspection requirement — Final
Ruoyu Wei
06/04/2025
Special inspection requirement — Energy Code Compliance Inspections
Ruoyu Wei
06/04/2025
Special inspection requirement — Fire-Resistance Rated Construction
Ruoyu Wei
06/04/2025
Special inspection requirement — Air barrier - visual inspection
Ruoyu Wei
06/04/2025
Special inspection requirement — Fenestration and door U-factor and product ratings
Ruoyu Wei
06/04/2025
Special inspection requirement — Fenestration areas
Ruoyu Wei
06/04/2025
Special inspection requirement — HVAC-R and service water heating system controls
Ruoyu Wei
06/04/2025
Special inspection requirement — HVAC-R and service water heating equipment
Ruoyu Wei
06/04/2025
Special inspection requirement — Fenestration air leakage
Ruoyu Wei
06/04/2025
Special inspection requirement — HVAC-R and service water piping design and insulation
Ruoyu Wei
06/04/2025
Special inspection requirement — Fire-Resistant Penetrations and Joints
Ruoyu Wei
06/04/2025
Special inspection requirement — Energy Code Compliance Inspections
Ruoyu Wei
06/04/2025
Special inspection requirement — HVAC-R and service water heating equipment
Ruoyu Wei
06/04/2025
Special inspection requirement — Maintenance information
Ruoyu Wei
06/04/2025
Special inspection requirement — HVAC-R and service water heating system controls
Ruoyu Wei
06/04/2025
Special inspection requirement — HVAC-R and service water piping design and insulation
Ruoyu Wei
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWMechanical SystemsPermit IssuedNY BUILDING ASSOCIATES IN06/03/2026
DOB NOWGeneral ConstructionPermit IssuedNY BUILDING ASSOCIATES IN06/03/2026
DOB NOWPlumbingPermit IssuedAMERICAN STANDARD P&H CORORP.06/03/2026
DOB NOWGeneral ConstructionPermit IssuedNY BUILDING ASSOCIATES IN06/30/2025
DOB NOWMechanical SystemsPermit IssuedNY BUILDING ASSOCIATES IN06/30/2025
DOB NOWPlumbingPermit IssuedAMERICAN STANDARD P&H CORORP.06/30/2025
1 project · most recent 09/14/2026
Air Conditioning Systems
FiledStatusContractorScopeMake / Model / Capacity
09/14/2026Permit IssuedNY BUILDING ASSOCIATES INAir Conditioning Systems
Cooling
Mitsubishi Electric MXZ-5C42NA4 48,000 BTU · Heat Pump Outdoor ×2
SUZ-KA18NAHZ 36,000 BTU · Condensing Unit ×1
MXZ-SM36NAM 36,000 BTU · Heat Pump Outdoor ×1
MXZ-SM42NAM 42,000 BTU · Vrf Outdoor ×1
MXZ-SM48NAM 48,000 BTU · Heat Pump Outdoor ×1
1 project · most recent 09/14/2026
Gas Water/Sanitary
FiledStatusContractorScope
09/14/2026Permit IssuedAMERICAN STANDARD P&H CORGas, Water/Sanitary
▾Special Inspection Requirements (DOB NOW) — 24
DateRequirementInspectorRole
08/22/2026Fire-Resistant Penetrations and JointsRuoyu Weispecial
08/22/2026Energy Code Compliance InspectionsRuoyu Weiprogress
08/22/2026HVAC-R and service water piping design and insulationRuoyu Weienergy_progress
08/22/2026HVAC-R and service water heating system controlsRuoyu Weienergy_progress
08/22/2026Maintenance informationRuoyu Weienergy_progress
08/22/2026HVAC-R and service water heating equipmentRuoyu Weienergy_progress
06/04/2025Mechanical SystemsRuoyu Weispecial
06/04/2025Fire-Resistant Penetrations and JointsRuoyu Weispecial
06/04/2025FinalRuoyu Weiprogress
06/04/2025Energy Code Compliance InspectionsRuoyu Weiprogress
06/04/2025Fire-Resistance Rated ConstructionRuoyu Weiprogress
06/04/2025Air barrier - visual inspectionRuoyu Weienergy_progress
06/04/2025Fenestration and door U-factor and product ratingsRuoyu Weienergy_progress
06/04/2025Fenestration areasRuoyu Weienergy_progress
06/04/2025HVAC-R and service water heating system controlsRuoyu Weienergy_progress
06/04/2025HVAC-R and service water heating equipmentRuoyu Weienergy_progress
06/04/2025Fenestration air leakageRuoyu Weienergy_progress
06/04/2025HVAC-R and service water piping design and insulationRuoyu Weienergy_progress
06/04/2025Fire-Resistant Penetrations and JointsRuoyu Weispecial
06/04/2025Energy Code Compliance InspectionsRuoyu Weiprogress
06/04/2025HVAC-R and service water heating equipmentRuoyu Weienergy_progress
06/04/2025Maintenance informationRuoyu Weienergy_progress
06/04/2025HVAC-R and service water heating system controlsRuoyu Weienergy_progress
06/04/2025HVAC-R and service water piping design and insulationRuoyu Weienergy_progress
▾Documents — 46 on file (BIS + DOB NOW)
▸Plans & Drawings2
▸DOB NOWPlans/Sketch2
08/21/2026B01236118-I1Request digital key ↗
08/21/2026B01236118-S1Request digital key ↗
▸Seals & Professional Certifications40
▸DOB NOWProgress Inspector Seal & Signature30
09/23/2026B01236118-P2Open ↗
09/23/2026B01236118-P2Open ↗
09/23/2026B01236118-P2Open ↗
Showing 3 of 30 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature6
09/23/2026B01236118-P1Open ↗
09/23/2026B01236118-P2Open ↗
09/23/2026B01236118-P2Open ↗
Showing 3 of 6 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature4
09/22/2026B01236118-P1Open ↗
09/22/2026B01236118-P2Open ↗
08/21/2026B01236118-I1Open ↗
Showing 3 of 4 on file for this type
▸Environmental & Asbestos4
▸DOB NOWDEP ACP-5: Asbestos Assessment Report4
09/22/2026B01236118-P1Open ↗
09/22/2026B01236118-P2Open ↗
08/21/2026B01236118-I1Open ↗
Showing 3 of 4 on file for this type