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Four families
459 51 STREET
BROOKLYN · BIN 3013280
💬 Discuss this project
1931Year Built
3Stories
C3Building Class
R6BZoning
2,781 sfGross Floor Area
4Units
Rent Stabilized2 Open Violations ▸FDNY Report ↗
Four families · Owner of record: BKTIANHAO, LLC · 2,003 sf lot · 1.39 FAR built · Flood zone X
Locations of Work
ArchitectureStructural
Floor 42p · 2 filings · 20 docs
Floor 32p · 2 filings · 20 docs
Floor 21p · 1 filing · 16 docs
Floor 12p · 1 filing · 20 docs
Cellar2p · 2 filings · 20 docs
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
M J DESIGN BUILD1307/08/2026
BKTIANHAO, LLC103/22/2026
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
12/13/2018$1.5M—— → —$539/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
M-CON ENGINEERING, PC506/13/2022
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
INTEGRITY UV 168403/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
AMERICAN STANDARD P&H CORORP.Plumbing407/08/2026
M J DESIGN AND BUILD INCGeneral Contractor207/08/2026
KJK ELECTRIC INCElectrical103/21/2026
ZHENG LIElectrical103/21/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
M-CON ENGINEERING7341506/13/2022
Building Lifecycle
All (70)Filed (5)Permit Issued (2)Signed Off (2)Violation (30)Inspection (7)Special Inspection (24)
05/01/2026
Violation issued (HPD, open)
A
11/19/2025
Violation issued (HPD, closed)
I
06/06/2025
Violation issued (HPD, open)
A
06/10/2024
Violation issued (HPD, closed)
A
06/10/2024
Violation issued (HPD, closed)
A
06/10/2024
Violation issued (HPD, closed)
A
06/10/2024
Violation issued (HPD, closed)
A
06/10/2024
Violation issued (HPD, closed)
A
06/10/2024
Violation issued (HPD, closed)
B
06/10/2024
Violation issued (HPD, closed)
A
06/10/2024
Violation issued (HPD, closed)
A
06/10/2024
Violation issued (HPD, closed)
B
06/10/2024
Violation issued (HPD, closed)
B
06/10/2024
Violation issued (HPD, closed)
A
04/08/2024
Violation issued (HPD, closed)
A
11/21/2023
Violation issued (HPD, closed)
I
03/20/2023
Violation issued (HPD, closed)
A
11/10/2022
Violation issued (HPD, closed)
I
07/07/2022
Signed off — Alteration
INTERIOR RENOVATION OF A 4 FAMILY HOUSE, REPAIRING FLOOR, CEILING AND NEW PARTITION WORK AS PER PLAN. PLUMBING WORK FILING IN SEPARATE APPLICATION. NO CHANGE IN USE, EGRESS OR OCCUPANCY.
B00602836-I1
07/07/2022
Signed off — Alteration
FILING PLUMBING WORK IN CONJUNCTION WITH DOB APPLICATION# B00602836. NO CHANGE IN USE, EGRESS OR OCCUPANCY.
B00604810-I1
06/24/2022
Inspection — Pass-Final General Construction Non-Directive 14
Pass
View inspection ↗
06/14/2022
Special inspection requirement — HVAC-R and service water heating equipment
Michelle Contri
06/14/2022
Special inspection requirement — HVAC-R and service water piping design and insulation
Michelle Contri
06/14/2022
Special inspection requirement — HVAC-R and service water heating system controls
Michelle Contri
06/14/2022
Special inspection requirement — Energy Code Compliance Inspections
Michelle Contri
06/14/2022
Special inspection requirement — Fire-Resistant Penetrations and Joints
Michelle Contri
06/13/2022
Filed — Alteration
FILING PLUMBING WORK IN CONJUNCTION WITH DOB APPLICATION# B00602836. NO CHANGE IN USE, EGRESS OR OCCUPANCY.
B00604810-P3
06/07/2022
Special inspection requirement — Fire-Resistant Penetrations and Joints
Michelle Contri
06/07/2022
Special inspection requirement — Energy Code Compliance Inspections
Michelle Contri
06/07/2022
Special inspection requirement — HVAC-R and service water heating system controls
Michelle Contri
06/07/2022
Special inspection requirement — HVAC-R and service water heating equipment
Michelle Contri
06/07/2022
Special inspection requirement — HVAC-R and service water piping design and insulation
Michelle Contri
06/02/2022
Inspection — Fail-Final General Construction Non-Directive 14
Fail
View inspection ↗
06/01/2022
Inspection — Certified Remove/Cap - work done in accordance with code
Certified
View inspection ↗
05/23/2022
Filed — Alteration
INTERIOR RENOVATION OF A 4 FAMILY HOUSE, REPAIRING FLOOR, CEILING AND NEW PARTITION WORK AS PER PLAN. PLUMBING WORK FILING IN SEPARATE APPLICATION. NO CHANGE IN USE, EGRESS OR OCCUPANCY.
B00602836-P1
05/23/2022
Filed — Alteration
FILING PLUMBING WORK IN CONJUNCTION WITH DOB APPLICATION# B00602836. NO CHANGE IN USE, EGRESS OR OCCUPANCY.
B00604810-P2
05/22/2022
Special inspection requirement — Fenestration air leakage
Michelle Contri
05/22/2022
Special inspection requirement — Fenestration and door U-factor and product ratings
Michelle Contri
05/22/2022
Special inspection requirement — Insulation placement and R values
Michelle Contri
05/22/2022
Special inspection requirement — Air barrier - visual inspection
Michelle Contri
05/22/2022
Special inspection requirement — Fenestration areas
Michelle Contri
05/22/2022
Special inspection requirement — Fire-Resistance Rated Construction
Michelle Contri
05/22/2022
Special inspection requirement — Energy Code Compliance Inspections
Michelle Contri
05/22/2022
Special inspection requirement — Structural Stability – Alterations of existing buildings
Michelle Contri
05/22/2022
Special inspection requirement — Fire-Resistant Penetrations and Joints
Michelle Contri
05/19/2022
Special inspection requirement — Fire-Resistant Penetrations and Joints
Michelle Contri
05/19/2022
Special inspection requirement — Energy Code Compliance Inspections
Michelle Contri
05/19/2022
Special inspection requirement — HVAC-R and service water heating equipment
Michelle Contri
05/19/2022
Special inspection requirement — HVAC-R and service water piping design and insulation
Michelle Contri
05/19/2022
Special inspection requirement — HVAC-R and service water heating system controls
Michelle Contri
05/18/2022
Inspection — Pass-Final PL - Up to 3 Requested Floors
Pass
View inspection ↗
02/22/2022
Violation issued (HPD, closed)
A
02/22/2022
Violation issued (HPD, closed)
I
01/07/2022
Inspection — Certified Gas-Gas-Piping-Roughing
Certified
View inspection ↗
01/07/2022
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Roughing
Certified
View inspection ↗
01/07/2022
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Underground
Certified
View inspection ↗
10/20/2021
Permit issued — Plumbing
B00604810-I1-PL
10/02/2021
Filed — Alteration
FILING PLUMBING WORK IN CONJUNCTION WITH DOB APPLICATION# B00602836. NO CHANGE IN USE, EGRESS OR OCCUPANCY.
B00604810-I1
10/01/2021
Permit issued — General Construction
B00602836-I1-GC
09/29/2021
Filed — Alteration
INTERIOR RENOVATION OF A 4 FAMILY HOUSE, REPAIRING FLOOR, CEILING AND NEW PARTITION WORK AS PER PLAN. PLUMBING WORK FILING IN SEPARATE APPLICATION. NO CHANGE IN USE, EGRESS OR OCCUPANCY.
B00602836-I1
Latest 60 of 70 events.
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWPlumbingSigned-offAMERICAN STANDARD P&H CORORP.10/20/2021
DOB NOWGeneral ConstructionSigned-offM J DESIGN AND BUILD INC10/01/2021
BISPLISSUEDTRI STATE PLBG & HTG INC01/09/2019
2 projects · most recent 12/29/2021
General Wiring
FiledStatusContractorScope
12/29/2021CompleteKJK ELECTRIC INC5 meters, 5 new_meters
10/06/2021CompleteKJK ELECTRIC INCGeneral Wiring
▾Field Inspections (DOB CAP) — 7
DateTypeResultReport
06/24/2022Pass-Final General Construction Non-Directive 14PassView ↗
06/02/2022Fail-Final General Construction Non-Directive 14FailView ↗
06/01/2022Certified Remove/Cap - work done in accordance with codeCertifiedView ↗
05/18/2022Pass-Final PL - Up to 3 Requested FloorsPassView ↗
01/07/2022Certified Gas-Gas-Piping-RoughingCertifiedView ↗
01/07/2022Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
01/07/2022Certified Water and Sanitary-WS-Sanitary Piping-UndergroundCertifiedView ↗
▾Special Inspection Requirements (DOB NOW) — 24
DateRequirementInspectorRole
06/14/2022HVAC-R and service water heating equipmentMichelle Contrienergy_progress
06/14/2022HVAC-R and service water piping design and insulationMichelle Contrienergy_progress
06/14/2022HVAC-R and service water heating system controlsMichelle Contrienergy_progress
06/14/2022Energy Code Compliance InspectionsMichelle Contriprogress
06/14/2022Fire-Resistant Penetrations and JointsMichelle Contrispecial
06/07/2022Fire-Resistant Penetrations and JointsMichelle Contrispecial
06/07/2022Energy Code Compliance InspectionsMichelle Contriprogress
06/07/2022HVAC-R and service water heating system controlsMichelle Contrienergy_progress
06/07/2022HVAC-R and service water heating equipmentMichelle Contrienergy_progress
06/07/2022HVAC-R and service water piping design and insulationMichelle Contrienergy_progress
05/22/2022Fenestration air leakageMichelle Contrienergy_progress
05/22/2022Fenestration and door U-factor and product ratingsMichelle Contrienergy_progress
05/22/2022Insulation placement and R valuesMichelle Contrienergy_progress
05/22/2022Air barrier - visual inspectionMichelle Contrienergy_progress
05/22/2022Fenestration areasMichelle Contrienergy_progress
05/22/2022Fire-Resistance Rated ConstructionMichelle Contriprogress
05/22/2022Energy Code Compliance InspectionsMichelle Contriprogress
05/22/2022Structural Stability – Alterations of existing buildingsMichelle Contrispecial
05/22/2022Fire-Resistant Penetrations and JointsMichelle Contrispecial
05/19/2022Fire-Resistant Penetrations and JointsMichelle Contrispecial
05/19/2022Energy Code Compliance InspectionsMichelle Contriprogress
05/19/2022HVAC-R and service water heating equipmentMichelle Contrienergy_progress
05/19/2022HVAC-R and service water piping design and insulationMichelle Contrienergy_progress
05/19/2022HVAC-R and service water heating system controlsMichelle Contrienergy_progress
▾Documents — 54 on file (BIS + DOB NOW)
▸Plans & Drawings5
▸DOB NOWPlans/Sketch5
09/01/2026B00602836-I1Request digital key ↗
09/01/2026B00602836-P1Request digital key ↗
09/01/2026B00604810-P2Request digital key ↗
Showing 3 of 5 on file for this type
▸Applications & Permits2
▸BISWORK PERMIT APPLICATION1
01/14/2019321905578Open ↗
▸BISPLAN / WORK APPROVAL APPLICATION1
01/14/2019321905578Open ↗
▸Seals & Professional Certifications33
▸DOB NOWProgress Inspector Seal & Signature19
09/01/2026B00604810-I1Open ↗
09/01/2026B00604810-I1Open ↗
09/01/2026B00604810-I1Open ↗
Showing 3 of 19 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature5
09/01/2026B00602836-P1Open ↗
09/01/2026B00602836-I1Open ↗
09/01/2026B00604810-P2Open ↗
Showing 3 of 5 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature5
09/01/2026B00604810-I1Open ↗
09/01/2026B00602836-P1Open ↗
09/01/2026B00602836-P1Open ↗
Showing 3 of 5 on file for this type
▸BISTECHNICAL REPORT: RESPONSIBILITY/CERTIFICATION2
04/17/2019321905578Open ↗
01/14/2019321905578Open ↗
▸BISPROFESSIONAL CERTIFICATION STATEMENT1
01/14/2019321905578Open ↗
▸BISPROFESSIONAL CERTIFIED CHECKLIST1
01/14/2019321905578Open ↗
▸Trade Schedules & Equipment1
▸BISSCHEDULE B - PLUMBING/SPRINKLER/STANDPIPE1
01/14/2019321905578Open ↗
▸Environmental & Asbestos6
▸DOB NOWDEP ACP-5: Asbestos Assessment Report5
09/01/2026B00602836-P1Open ↗
09/01/2026B00602836-I1Open ↗
09/01/2026B00604810-I1Open ↗
Showing 3 of 5 on file for this type
▸BISASBESTOS: CERTIFICATION (DEP ACP5)1
01/14/2019321905578Open ↗
▸Energy Compliance2
▸DOB NOWEN2: As Built Energy Analysis.2
08/13/2026B00604810-I1Open ↗
08/13/2026B00602836-I1Open ↗
▸Approvals, Objections & Sign-offs1
▸BISCERTIFICATE OF OCCUPANCY/LOC: REQUEST1
04/17/2019321905578Open ↗
▸Cost, Insurance & Ownership2
▸BISCOST AFFIDAVIT2
04/17/2019321905578Open ↗
01/14/2019321905578Open ↗
▸Filing & Intake Forms2
▸BISBOROUGH INTAKE FORM1
04/17/2019321905578Open ↗
▸BISEFILING COVER SHEET1
01/16/2019321905578Open ↗