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Three families
231 PROSPECT AVENUE
BROOKLYN · BIN 3024143
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1899Year Built
3Stories
C0Building Class
C4-3AZoning
1,900 sfGross Floor Area
3Units
Rent Stabilized11 Open Violations ▸FDNY Report ↗
Three families · 2,633 sf lot · 0.72 FAR built · Flood zone X
Locations of Work
ArchitecturePlumbing
Floor 312p · 2 filings · 20 docs
Floor 26p · 1 filing · 19 docs
Floor 16p · 1 filing · 19 docs
Cellar6p · 1 filing · 19 docs
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
12/15/2020$1.5M—— → —$789/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
EMILY LUI1007/18/2023
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
CUBE DESIGN BUILD MANAGEMENT2003/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
CUBE BUILDERS GROUP NYGeneral Contractor1307/08/2026
EMILY LUIElectrical203/21/2026
PIPESTYLISTS, INCPlumbing107/08/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
CUBE DBM INC6791704/21/2023
Building Lifecycle
All (64)Filed (10)Permit Issued (5)Signed Off (2)Violation (16)Inspection (9)Objection (14)Special Inspection (8)
05/05/2026
Violation issued (HPD, open)
A
11/19/2025
Violation issued (HPD, open)
I
07/17/2025
Inspection — Pass-Final CND-Occupancy Inspection
Pass
View inspection ↗
06/10/2025
Violation issued (HPD, open)
A
11/26/2024
Violation issued (HPD, open)
I
04/11/2024
Violation issued (HPD, open)
A
11/20/2023
Violation issued (HPD, open)
I
10/16/2023
Inspection — Pass-Final CND-Occupancy Inspection
Pass
View inspection ↗
07/24/2023
Objection raised — Scope
07/24/2023
Objection resolved — Addressed
07/18/2023
Filed — Alteration CO
Job filed herewith to obtain new schedule of occupancy as per plans filed under separate DOBNOW Job#B00457516-I1 to convert ex. 3-family to 2-family.
B00480949-P2
06/21/2023
Inspection — Pass-Final CND-Occupancy Inspection
Pass
View inspection ↗
05/16/2023
Signed off — Alteration
JOB FILED HEREWITH TO CONVERT EXISTING 3-FAMILY TO 2-FAMILY WITH INTERIOR RENOVATION OF AS PER PLANS, INCLUDING NEW FINISHES AND NONLOADBEARING PARTITIONS. OBTAIN NEW SCHEDULE OF OCCUPANCY.
B00457516-I1
05/03/2023
Inspection — Pass-Final General Construction Non-Directive 14
Pass
View inspection ↗
04/27/2023
Special inspection requirement — Lighting in dwelling units
EMILY LUI
04/27/2023
Special inspection requirement — Fire-Resistant Penetrations and Joints
EMILY LUI
04/21/2023
Filed — Alteration
JOB FILED HEREWITH TO CONVERT EXISTING 3-FAMILY TO 2-FAMILY WITH INTERIOR RENOVATION OF AS PER PLANS, INCLUDING NEW FINISHES AND NONLOADBEARING PARTITIONS. OBTAIN NEW SCHEDULE OF OCCUPANCY.
B00457516-P5
04/21/2023
Special inspection requirement — Lighting in dwelling units
EMILY LUI
04/21/2023
Special inspection requirement — Fire-Resistant Penetrations and Joints
EMILY LUI
03/24/2023
Violation issued (HPD, open)
A
03/03/2023
Inspection — Fail-Final General Construction Non-Directive 14
Fail
View inspection ↗
02/16/2023
Inspection — Fail-Final General Construction Non-Directive 14
Fail
View inspection ↗
02/09/2023
Permit issued — General Construction
B00457516-I1-GC
02/09/2023
Permit issued — General Construction
B00480949-I1-GC
11/16/2022
Filed — Alteration CO
Job filed herewith to obtain new schedule of occupancy as per plans filed under separate DOBNOW Job#B00457516-I1 to convert ex. 3-family to 2-family.
B00480949-P1
11/16/2022
Filed — Alteration
JOB FILED HEREWITH TO CONVERT EXISTING 3-FAMILY TO 2-FAMILY WITH INTERIOR RENOVATION OF AS PER PLANS, INCLUDING NEW FINISHES AND NONLOADBEARING PARTITIONS. OBTAIN NEW SCHEDULE OF OCCUPANCY.
B00457516-P4
11/09/2022
Violation issued (HPD, open)
I
05/31/2022
Signed off — Alteration
JOB FILED HEREWITH TO CONVERT EXISTING 3-FAMILY TO 2-FAMILY WITH INTERIOR RENOVATION OF AS PER PLANS, INCLUDING NEW FINISHES AND NONLOADBEARING PARTITIONS. OBTAIN NEW SCHEDULE OF OCCUPANCY.
B00457516-S1
03/01/2022
Violation issued (HPD, open)
A
03/01/2022
Violation issued (HPD, open)
I
02/15/2022
Inspection — Fail-Final PL - Up to 3 Requested Floors
Fail
View inspection ↗
02/05/2022
Permit issued — General Construction
B00480949-I1-GC
11/22/2021
Special inspection requirement — Fire-Resistant Penetrations and Joints
EMILY LUI
11/22/2021
Special inspection requirement — Lighting in dwelling units
EMILY LUI
08/18/2021
Inspection — Certified Gas-Gas-Piping-Roughing
Certified
View inspection ↗
08/18/2021
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Roughing
Certified
View inspection ↗
08/13/2021
Special inspection requirement — Fire-Resistant Penetrations and Joints
EMILY LUI
08/06/2021
Filed — Alteration
JOB FILED HEREWITH TO CONVERT EXISTING 3-FAMILY TO 2-FAMILY WITH INTERIOR RENOVATION OF AS PER PLANS, INCLUDING NEW FINISHES AND NONLOADBEARING PARTITIONS. OBTAIN NEW SCHEDULE OF OCCUPANCY.
B00457516-P3
08/02/2021
Special inspection requirement — Fire-Resistant Penetrations and Joints
EMILY LUI
07/12/2021
Filed — Alteration
JOB FILED HEREWITH TO CONVERT EXISTING 3-FAMILY TO 2-FAMILY WITH INTERIOR RENOVATION OF AS PER PLANS, INCLUDING NEW FINISHES AND NONLOADBEARING PARTITIONS. OBTAIN NEW SCHEDULE OF OCCUPANCY.
B00457516-P2
07/12/2021
Filed — Alteration
JOB FILED HEREWITH TO CONVERT EXISTING 3-FAMILY TO 2-FAMILY WITH INTERIOR RENOVATION OF AS PER PLANS, INCLUDING NEW FINISHES AND NONLOADBEARING PARTITIONS. OBTAIN NEW SCHEDULE OF OCCUPANCY.
B00457516-P1
06/17/2021
Permit issued — Plumbing
B00457516-S1-PL
06/11/2021
Filed — Alteration
JOB FILED HEREWITH TO CONVERT EXISTING 3-FAMILY TO 2-FAMILY WITH INTERIOR RENOVATION OF AS PER PLANS, INCLUDING NEW FINISHES AND NONLOADBEARING PARTITIONS. OBTAIN NEW SCHEDULE OF OCCUPANCY.
B00457516-S1
05/28/2021
Permit issued — General Construction
B00457516-I1-GC
04/30/2021
Objection resolved — Addressed
04/30/2021
Objection resolved — Addressed
04/30/2021
Objection resolved — Addressed
04/24/2021
Objection raised — Other
04/24/2021
Objection raised — Other
04/16/2021
Filed — Alteration CO
Job filed herewith to obtain new schedule of occupancy as per plans filed under separate DOBNOW Job#B00457516-I1 to convert ex. 3-family to 2-family.
B00480949-I1
04/16/2021
Objection resolved — Addressed
04/12/2021
Violation issued (HPD, open)
A
04/07/2021
Objection resolved — Addressed
03/23/2021
Objection resolved — Addressed
03/09/2021
Objection raised — Other
03/09/2021
Objection raised — Other
03/09/2021
Objection raised — Other
03/09/2021
Objection raised — Other
03/04/2021
Filed — Alteration
JOB FILED HEREWITH TO CONVERT EXISTING 3-FAMILY TO 2-FAMILY WITH INTERIOR RENOVATION OF AS PER PLANS, INCLUDING NEW FINISHES AND NONLOADBEARING PARTITIONS. OBTAIN NEW SCHEDULE OF OCCUPANCY.
B00457516-I1
10/31/2019
Violation issued (HPD, closed)
I
Latest 60 of 64 events.
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWGeneral ConstructionSigned-offCUBE BUILDERS GROUP INC02/09/2023
DOB NOWGeneral ConstructionPermit IssuedCUBE BUILDERS GROUP INC02/09/2023
DOB NOWGeneral ConstructionPermit IssuedCUBE BUILDERS GROUP INC02/05/2022
DOB NOWPlumbingSigned-offT & T PLUMBING INC06/17/2021
DOB NOWGeneral ConstructionSigned-offCUBE BUILDERS GROUP INC05/28/2021
1 project · most recent 06/16/2021
General Wiring
FiledStatusContractorScope
06/16/2021CompleteUNITED ELEC'L CONT'G CORPGeneral Wiring
▾Field Inspections (DOB CAP) — 9
DateTypeResultReport
07/17/2025Pass-Final CND-Occupancy InspectionPassView ↗
10/16/2023Pass-Final CND-Occupancy InspectionPassView ↗
06/21/2023Pass-Final CND-Occupancy InspectionPassView ↗
05/03/2023Pass-Final General Construction Non-Directive 14PassView ↗
03/03/2023Fail-Final General Construction Non-Directive 14FailView ↗
02/16/2023Fail-Final General Construction Non-Directive 14FailView ↗
02/15/2022Fail-Final PL - Up to 3 Requested FloorsFailView ↗
08/18/2021Certified Gas-Gas-Piping-RoughingCertifiedView ↗
08/18/2021Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
▾Special Inspection Requirements (DOB NOW) — 8
DateRequirementInspectorRole
04/27/2023Lighting in dwelling unitsEMILY LUIenergy_progress
04/27/2023Fire-Resistant Penetrations and JointsEMILY LUIspecial
04/21/2023Lighting in dwelling unitsEMILY LUIenergy_progress
04/21/2023Fire-Resistant Penetrations and JointsEMILY LUIspecial
11/22/2021Fire-Resistant Penetrations and JointsEMILY LUIspecial
11/22/2021Lighting in dwelling unitsEMILY LUIenergy_progress
08/13/2021Fire-Resistant Penetrations and JointsEMILY LUIspecial
08/02/2021Fire-Resistant Penetrations and JointsEMILY LUIspecial
▾Documents — 44 on file (BIS + DOB NOW)
▸Plans & Drawings12
▸DOB NOWPlans/Sketch8
09/01/2026B00457516-P2Request digital key ↗
09/01/2026B00457516-P3Request digital key ↗
09/01/2026B00457516-S1Request digital key ↗
Showing 3 of 8 on file for this type
▸DOB NOWPlans/Sketch - General Construction4
09/01/2026B00457516-P1Request digital key ↗
09/01/2026B00457516-P4Request digital key ↗
09/01/2026B00457516-P5Request digital key ↗
Showing 3 of 4 on file for this type
▸Zoning, Tax Lot & Property Records6
▸DOB NOWZoning Exhibit form (1-5)5
08/13/2026B00480949-P2Open ↗
08/13/2026B00480949-P1Open ↗
08/13/2026B00480949-P2Open ↗
Showing 3 of 5 on file for this type
▸DOB NOWHouse Number Verification: TOPO Stamp1
08/13/2026B00480949-I1Open ↗
▸Seals & Professional Certifications17
▸DOB NOWDPL-1: Design Professional Seal & Signature9
09/01/2026B00457516-I1Open ↗
09/01/2026B00457516-S1Open ↗
09/01/2026B00457516-P1Open ↗
Showing 3 of 9 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature5
09/23/2026B00457516-I1Open ↗
08/25/2026B00457516-P4Open ↗
08/23/2026B00457516-S1Open ↗
Showing 3 of 5 on file for this type
▸DOB NOWProgress Inspector Seal & Signature3
08/25/2026B00457516-I1Open ↗
08/25/2026B00457516-P4Open ↗
08/23/2026B00457516-P5Open ↗
▸Safety & Tenant Protection4
▸DOB NOWStreet Tree Checklist4
08/15/2026B00480949-P2Open ↗
08/15/2026B00480949-P2Open ↗
08/14/2026B00480949-I1Open ↗
Showing 3 of 4 on file for this type
▸Environmental & Asbestos3
▸DOB NOWDEP ACP-20/ACP-21: Asbestos Project Conditional Completion Form/Asbestos Project Completion Form3
09/01/2026B00457516-S1Open ↗
08/14/2026B00457516-I1Open ↗
08/14/2026B00480949-I1Open ↗
▸Energy Compliance1
▸DOB NOWEN2: As Built Energy Analysis.1
08/13/2026B00457516-I1Open ↗
▸Other Documents1
▸DOB NOWFinal Survey1
08/13/2026B00480949-I1Open ↗