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BuildNYC
Two family brick
834 56TH STREET
BROOKLYN · BIN 3139857
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1925Year Built
2Stories
B1Building Class
R6Zoning
2,160 sfGross Floor Area
2Units
FDNY Report ↗
Two family brick · 2,258 sf lot · 0.96 FAR built · Flood zone X
Locations of Work
ArchitectureStructuralMechanicalPlumbingGeneral
Names shown beside floors are taken automatically from the text of filed documents and may be incomplete or wrong.
Floor 27p · 1 filing · 17 docs
Floor 17p · 1 filing · 17 docs
Cellar9p · 1 filing · 17 docs
Site & exterior6p · 1 filing · 8 docs
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
12/16/2025$2.0M—Private party → Private party$921/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
Chun Feng, Architect308/31/2026
NY Building Associates302/11/2026
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
High Quality 3381003/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
High Quality ConstructionGeneral Contractor304/09/2026
Mercury Building AssociatesGeneral Contractor207/08/2026
Mercury Building AssociatesScaffold107/08/2026
American Standard P&H CororpPlumbing107/08/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
NKM Engineering6244408/31/2026
Sq. Arch4802101/20/2026
Building Lifecycle
All (48)Filed (6)Permit Issued (6)Signed Off (4)Inspection (2)Special Inspection (30)
09/10/2026
Signed off — Alteration
FILE PLUMBING WORK WITH INSTALLATION OF NEW PLUMBING FIXTURES AND GAS APPLIANCES AS PER PLAN. NO CHANGE IN USE, EGRESS OR OCCUPANCY.
B01341729-I1
09/04/2026
Signed off — Alteration
B01353562-I1
09/02/2026
Special inspection requirement — HVAC-R and service water heating equipment
Chun Feng
09/02/2026
Special inspection requirement — Air barrier - visual inspection
Chun Feng
09/02/2026
Special inspection requirement — HVAC-R and service water heating system controls
Chun Feng
09/02/2026
Special inspection requirement — HVAC-R and service water piping design and insulation
Chun Feng
09/02/2026
Special inspection requirement — Fenestration areas
Chun Feng
09/02/2026
Special inspection requirement — Energy Code Compliance Inspections
Chun Feng
09/02/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
NARESH MAHANGU
09/02/2026
Special inspection requirement — Mechanical Systems
NARESH MAHANGU
09/02/2026
Special inspection requirement — Fire-Resistance Rated Construction
Chun Feng
09/02/2026
Special inspection requirement — Final
Chun Feng
09/02/2026
Special inspection requirement — Interior lighting power
Chun Feng
09/02/2026
Special inspection requirement — Fenestration and door U-factor and product ratings
Chun Feng
09/02/2026
Special inspection requirement — Fenestration air leakage
Chun Feng
08/31/2026
Filed — Alteration
FILE PLUMBING WORK WITH INSTALLATION OF NEW PLUMBING FIXTURES AND GAS APPLIANCES AS PER PLAN. NO CHANGE IN USE, EGRESS OR OCCUPANCY.
B01341729-P1
08/28/2026
Signed off — Alteration
B01353562-S1
08/28/2026
Signed off — Alteration
FILE PLUMBING WORK WITH INSTALLATION OF NEW PLUMBING FIXTURES AND GAS APPLIANCES AS PER PLAN. NO CHANGE IN USE, EGRESS OR OCCUPANCY.
B01341729-S1
08/28/2026
Special inspection requirement — HVAC-R and service water heating system controls
Chun Feng
08/28/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
NARESH MAHANGU
08/28/2026
Special inspection requirement — Mechanical Systems
NARESH MAHANGU
08/28/2026
Special inspection requirement — Energy Code Compliance Inspections
Chun Feng
08/28/2026
Special inspection requirement — Final
Chun Feng
08/28/2026
Special inspection requirement — Fire-Resistance Rated Construction
Chun Feng
08/28/2026
Special inspection requirement — Air barrier - visual inspection
Chun Feng
08/28/2026
Special inspection requirement — Fenestration air leakage
Chun Feng
08/28/2026
Special inspection requirement — HVAC-R and service water heating equipment
Chun Feng
08/28/2026
Special inspection requirement — Fenestration areas
Chun Feng
08/28/2026
Special inspection requirement — HVAC-R and service water piping design and insulation
Chun Feng
08/28/2026
Special inspection requirement — Fenestration and door U-factor and product ratings
Chun Feng
08/28/2026
Special inspection requirement — Interior lighting power
Chun Feng
04/21/2026
Permit issued — Mechanical Systems
B01341729-I1-GC
04/17/2026
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Roughing
Certified
View inspection ↗
04/17/2026
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Underground
Certified
View inspection ↗
04/15/2026
Permit issued — Structural
B01353562-I1-GC-CX
04/14/2026
Permit issued — Construction Fence
B01353562-S1-FN
02/20/2026
Special inspection requirement — Concrete - Cast-In-Place
NARESH MAHANGU
02/20/2026
Special inspection requirement — Final
Lester Katz
02/20/2026
Special inspection requirement — Masonry
NARESH MAHANGU
02/11/2026
Filed — Alteration
B01353562-S1
02/11/2026
Filed — Alteration
B01353562-P1
02/02/2026
Filed — Alteration
B01353562-I1
01/26/2026
Permit issued — Plumbing
B01341729-S1-PL
01/26/2026
Permit issued — General Construction
B01341729-I1-MS
01/23/2026
Permit issued — Mechanical Systems
B01341729-I1-GC
01/20/2026
Filed — Alteration
FILE PLUMBING WORK WITH INSTALLATION OF NEW PLUMBING FIXTURES AND GAS APPLIANCES AS PER PLAN. NO CHANGE IN USE, EGRESS OR OCCUPANCY.
B01341729-I1
01/20/2026
Filed — Alteration
FILE PLUMBING WORK WITH INSTALLATION OF NEW PLUMBING FIXTURES AND GAS APPLIANCES AS PER PLAN. NO CHANGE IN USE, EGRESS OR OCCUPANCY.
B01341729-S1
01/20/2026
Special inspection requirement — Energy Code Compliance Inspections
Chun Feng
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWMechanical SystemsSigned-offMercury Building Associates04/21/2026
DOB NOWStructuralSigned-offMercury Building Associates04/15/2026
DOB NOWConstruction FenceSigned-offMercury Building Associates04/14/2026
DOB NOWPlumbingSigned-offAmerican Standard P&H Cororp01/26/2026
DOB NOWGeneral ConstructionSigned-offHigh Quality Construction01/26/2026
DOB NOWMechanical SystemsSigned-offHigh Quality Construction01/23/2026
1 project · most recent 08/31/2026
Heating and Air Conditioning Systems
FiledStatusContractorScopeMake / Model / Capacity
08/31/2026Signed-offMercury Building AssociatesHeating and Air Conditioning Systems
Heat / Cool
Gree MUL24HP230V1R32AO 24,000 BTU · Condensing Unit ×12
MUL18HP230V1R32AO 18,000 BTU · Condensing Unit ×4
1 project · most recent 08/31/2026
Gas Water/Sanitary
FiledStatusContractorScope
08/31/2026Signed-offAmerican Standard P&HGas, Water/Sanitary
1 project · most recent 02/12/2026
General Wiring
FiledStatusContractorScope
02/12/2026CompleteEric & NG ElectricalGeneral Wiring
1 project · most recent 08/31/2026
Fence
FiledStatusContractorScope
08/31/2026Signed-offMercury Building AssociatesFence
▾Field Inspections (DOB CAP) — 2
DateTypeResultReport
04/17/2026Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
04/17/2026Certified Water and Sanitary-WS-Sanitary Piping-UndergroundCertifiedView ↗
▾Special Inspection Requirements (DOB NOW) — 31
DateRequirementInspectorRole
09/02/2026HVAC-R and service water heating equipmentChun Fengenergy_progress
09/02/2026Air barrier - visual inspectionChun Fengenergy_progress
09/02/2026HVAC-R and service water heating system controlsChun Fengenergy_progress
09/02/2026HVAC-R and service water piping design and insulationChun Fengenergy_progress
09/02/2026Fenestration areasChun Fengenergy_progress
09/02/2026Energy Code Compliance InspectionsChun Fengprogress
09/02/2026Fire-Resistant Penetrations and JointsNARESH MAHANGUspecial
09/02/2026Mechanical SystemsNARESH MAHANGUspecial
09/02/2026Fire-Resistance Rated ConstructionChun Fengprogress
09/02/2026FinalChun Fengprogress
09/02/2026Interior lighting powerChun Fengenergy_progress
09/02/2026Fenestration and door U-factor and product ratingsChun Fengenergy_progress
09/02/2026Fenestration air leakageChun Fengenergy_progress
08/28/2026HVAC-R and service water heating system controlsChun Fengenergy_progress
08/28/2026Fire-Resistant Penetrations and JointsNARESH MAHANGUspecial
08/28/2026Mechanical SystemsNARESH MAHANGUspecial
08/28/2026Energy Code Compliance InspectionsChun Fengprogress
08/28/2026FinalChun Fengprogress
08/28/2026Fire-Resistance Rated ConstructionChun Fengprogress
08/28/2026Air barrier - visual inspectionChun Fengenergy_progress
08/28/2026Fenestration air leakageChun Fengenergy_progress
08/28/2026HVAC-R and service water heating equipmentChun Fengenergy_progress
08/28/2026Fenestration areasChun Fengenergy_progress
08/28/2026HVAC-R and service water piping design and insulationChun Fengenergy_progress
08/28/2026Fenestration and door U-factor and product ratingsChun Fengenergy_progress
Latest 25 of 31.
▾Documents — 25 on file (BIS + DOB NOW)
▸Plans & Drawings3
▸DOB NOWPlans/Sketch3
08/18/2026B01353562-I1Request digital key ↗
08/18/2026B01353562-S1Request digital key ↗
08/18/2026B01353562-P1Request digital key ↗
▸Zoning, Tax Lot & Property Records3
▸DOB NOWRestrictive Declaration/Easement 13
10/14/2026B01341729-P1Open ↗
08/13/2026B01341729-S1Open ↗
08/13/2026B01341729-I1Open ↗
▸Seals & Professional Certifications16
▸DOB NOWDPL-1: Design Professional Seal & Signature6
10/14/2026B01341729-P1Open ↗
08/18/2026B01353562-I1Open ↗
08/13/2026B01341729-S1Open ↗
Showing 3 of 6 on file for this type
▸DOB NOWProgress Inspector Seal & Signature6
10/14/2026B01341729-P1Open ↗
10/14/2026B01341729-P1Open ↗
09/23/2026B01341729-I1Open ↗
Showing 3 of 6 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature4
10/14/2026B01341729-P1Open ↗
09/23/2026B01341729-I1Open ↗
08/28/2026B01353562-I1Open ↗
Showing 3 of 4 on file for this type
▸Environmental & Asbestos3
▸DOB NOWDEP ACP-5: Asbestos Assessment Report3
10/14/2026B01341729-P1Open ↗
08/13/2026B01341729-S1Open ↗
08/13/2026B01341729-I1Open ↗