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Office with apartments (no commercial)
9727 4 AVENUE
BROOKLYN · BIN 3155887
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1938Year Built
2Stories
O8Building Class
R6AZoning
5,723 sfGross Floor Area
3Units
0 Open ViolationsFDNY Report ↗
Office with apartments (no commercial) · Owner of record: 9733 4TH AVENUE LLC · 2,241 sf lot · 2.55 FAR built · Flood zone X
Locations of Work
Fire Protection
Floor 24p · 1 filing · 14 docs
Floor 1
Cellar2p · 1 filing · 14 docs
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
9733 4TH AVENUE303/22/2026
DURAL ESTATES INC103/22/2026
9327 4TH AVENUE403/21/2026
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
04/09/2019$2.3M—9727 4TH AVENUE LLC → 9733 4TH AVENUE LLC$406/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
MAXFIELD BLAUFEUX & HEYWOOD BLAUFEU207/30/2024
A TECH ENGINEERING NYC, PLLC.303/08/2023
LEON SKVIRSKY PE206/29/2020
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
BUILDING BROTHERS403/21/2026
A TECH ENGINEERING NYC603/21/2026
MAXFIELD BLAUFEUX & HEYWOOD BLAUFEU203/21/2026
RELIABLE EXPEDITING103/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
ADELPHI INNOVATIVE DESIGNGeneral Contractor503/22/2026
CODE MECHANICAL INCPlumbing507/08/2026
R & G MECHANICAL CORPFire Protection207/08/2026
PAUL SIGNSScaffold207/08/2026
R&A HEATING & CONTRG CO.IPlumbing107/08/2026
R & G MECHANICAL CORPPlumbing107/08/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
A TECH ENGINEERING NYC, P6738303/08/2023
Building Lifecycle
All (21)Filed (7)Permit Issued (9)Signed Off (5)
06/17/2025
Signed off — Alteration
Boiler work type only for two boilers in cellar in conjunction with BIS #321973744.
B01034701-I1
02/13/2025
Permit issued — Boiler Equipment
B01034701-I1-BE
08/12/2024
Permit issued — Boiler Equipment
B01034701-I1-BE
07/30/2024
Filed — Alteration
Boiler work type only for two boilers in cellar in conjunction with BIS #321973744.
B01034701-I1
12/19/2023
Signed off — Alteration
Installation of new fire sprinkler system with valves and meters for same.
B00239887-I1
03/08/2023
Filed — Alteration
Installation of new fire sprinkler system with valves and meters for same.
B00239887-P2
01/13/2023
Permit issued — Sprinklers
B00239887-I1-PL
01/13/2023
Permit issued — Sprinklers
B00239887-I1-EW-SP
08/19/2020
Signed off — Alteration
B00358693-I1
08/19/2020
Signed off — Alteration
B00358695-I1
07/14/2020
Permit issued — Sign
B00358695-I1-SG
07/14/2020
Permit issued — Sign
B00358693-I1-SG
06/29/2020
Filed — Alteration
B00358693-I1
06/29/2020
Filed — Alteration
B00358695-I1
02/13/2020
Signed off — Alteration
B00179386-I1
11/26/2019
Filed — Alteration
Installation of new fire sprinkler system with valves and meters for same.
B00239887-P1
11/14/2019
Permit issued — Sprinklers
B00239887-I1-EW-SP
11/12/2019
Permit issued — Sprinklers
B00239887-I1-PL
10/03/2019
Filed — Alteration
Installation of new fire sprinkler system with valves and meters for same.
B00239887-I1
09/23/2019
Permit issued — Construction Fence
B00179386-I1-FN
08/08/2019
Filed — Alteration
B00179386-I1
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWBoiler EquipmentSigned-offCODE MECHANICAL INC02/13/2025
DOB NOWBoiler EquipmentSigned-offCODE MECHANICAL INC08/12/2024
DOB NOWSprinklersSigned-offR & G MECHANICAL CORP01/13/2023
DOB NOWSprinklersSigned-offR & G MECHANICAL CORP01/13/2023
DOB NOWSignSigned-offPAUL SIGNS, INC07/14/2020
DOB NOWSignSigned-offPAUL SIGNS, INC07/14/2020
DOB NOWSprinklersSigned-offR & G MECHANICAL CORP11/14/2019
DOB NOWSprinklersSigned-offR&A HEATING & CONTRG CO.I11/12/2019
DOB NOWConstruction FenceSigned-offADELPHI INNOVATIVE DESIGN09/23/2019
BISPLISSUEDCODE MECHANICAL INC02/26/2024
BISPLISSUEDCODE MECHANICAL INC05/19/2022
BISPLISSUEDDO RITE MECHANICAL CORP01/30/2015
BISPLISSUEDDO RITE MECHANICAL CORP05/14/2013
BISEQISSUEDEMPIRE STATE DEVELOPMENT04/24/2013
BISOTISSUEDEMPIRE STATE DEVELOPMENT04/24/2013
1 project · most recent 12/12/2019
General Wiring
FiledStatusContractorScope
12/12/2019CompleteJAVELIN ELECTRIC INCGeneral Wiring
▾Field Inspections (DOB CAP) — 1
DateTypeResultReport
06/10/2025Pass-Final Boiler Equipment InspectionPassView ↗
▾Special Inspection Requirements (DOB NOW) — 3
DateRequirementInspectorRole
03/08/2023Sprinkler Systemsanthony santorospecial
02/28/2023Sprinkler Systemsanthony santorospecial
11/26/2019Sprinkler Systemsanthony santorospecial
▾Documents — 51 on file (BIS + DOB NOW)
▸Plans & Drawings10
▸DOB NOWPlans/Sketch - Plumbing3
09/02/2026B00239887-I1Request digital key ↗
09/02/2026B00239887-P2Request digital key ↗
08/15/2026B00239887-P1Request digital key ↗
▸DOB NOWPlans/Sketch - Sprinkler3
09/02/2026B00239887-P2Request digital key ↗
09/02/2026B00239887-I1Request digital key ↗
08/15/2026B00239887-P1Request digital key ↗
▸DOB NOWPlans/Sketch - Sign2
09/02/2026B00358695-I1Request digital key ↗
09/02/2026B00358693-I1Request digital key ↗
▸DOB NOWPlans/Sketch - Construction Fence1
09/02/2026B00179386-I1Request digital key ↗
▸DOB NOWPlans/Sketch1
08/24/2026B01034701-I1Request digital key ↗
▸Applications & Permits5
▸BISWORK PERMIT APPLICATION3
02/06/2015320737958Open ↗
05/16/2013320737958Open ↗
04/25/2013320737958Open ↗
▸BISPLAN / WORK APPROVAL APPLICATION2
06/03/2013320737958Open ↗
03/29/2013320737958Open ↗
▸Seals & Professional Certifications12
▸DOB NOWDPL-1: Design Professional Seal & Signature7
08/13/2026B00358695-I1Open ↗
08/13/2026B00239887-I1Open ↗
08/13/2026B00358693-I1Open ↗
Showing 3 of 7 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature3
09/22/2026B00239887-P2Open ↗
08/31/2026B00239887-P1Open ↗
08/23/2026B00239887-I1Open ↗
▸BISTECHNICAL REPORT: RESPONSIBILITY/CERTIFICATION2
09/11/2015320737958Open ↗
03/29/2013320737958Open ↗
▸Trade Schedules & Equipment8
▸BISSELF-CERT PLUMBING NOTICE3
09/23/2013320737958Open ↗
08/07/2013320737958Open ↗
07/05/2013320737958Open ↗
▸BISSCHEDULE B - PLUMBING2
06/03/2013320737958Open ↗
03/29/2013320737958Open ↗
▸BISSCHEDULE B - PLUMBING/SPRINKLER/STANDPIPE1
05/21/2015320737958Open ↗
▸BISEQUIPMENT USE PERMITS1
09/11/2015320737958Open ↗
▸BISEQUIPMENT USE APPLICATION/PERMIT1
09/11/2015320737958Open ↗
▸Safety & Tenant Protection4
▸DOB NOWTenant Protection Plan2
08/13/2026B00358695-I1Open ↗
08/13/2026B00358693-I1Open ↗
▸BISSTREET TREE CHECKLIST1
03/29/2013320737958Open ↗
▸BISDS1-Demolition Submittal Certification Form1
04/25/2013320737958Open ↗
▸Environmental & Asbestos1
▸BISASBESTOS: CERTIFICATION (DEP ACP5)1
03/29/2013320737958Open ↗
▸Energy Compliance3
▸BISTECHNICAL REPORT: ENERGY CODE PROGRESS INSPS2
09/11/2015320737958Open ↗
03/29/2013320737958Open ↗
▸BISAS-BUILT ENERGY ANALYSIS1
09/11/2015320737958Open ↗
▸Approvals, Objections & Sign-offs2
▸BISADMINISTRATIVE OBJECTIONS1
03/29/2013320737958Open ↗
▸BISCERTIFICATE OF OCCUPANCY/LOC: REQUEST1
09/11/2015320737958Open ↗
▸Cost, Insurance & Ownership2
▸BISCOST AFFIDAVIT2
09/11/2015320737958Open ↗
03/29/2013320737958Open ↗
▸Filing & Intake Forms4
▸BISADDITIONAL INFORMATION3
05/27/2015320737958Open ↗
05/27/2015320737958Open ↗
07/16/2013320737958Open ↗
▸BISEFILING COVER SHEET1
03/29/2013320737958Open ↗