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Two family frame
2506 EAST 21 STREET
BROOKLYN · Sheepshead Bay-Manhattan Beach-Gerritsen Beach · BIN 3203201
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1930Year Built
2Stories
B2Building Class
R4Zoning
2,160 sfGross Floor Area
2Units
FDNY Report ↗
Two family frame · 2,625 sf lot · 0.82 FAR built · Flood zone X500
Locations of Work
ArchitecturePlumbing
Floor 17p · 2 filings · 20 docs
Cellar7p · 2 filings · 20 docs
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
2506 MANAGEMENT1207/08/2026
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
03/29/2024$950K—— → —$440/sf building
02/23/2022$825K—— → —$382/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
-406/29/2022
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
MODERN BUILDING CONSULTANT403/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
JZ CONSTRUCTION GROUP INCGeneral Contractor107/08/2026
AMC PLBG, HTG & CLNG, INCPlumbing107/08/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
GREAT WALL CONSULTANT P.E5633406/29/2022
Building Lifecycle
All (29)Filed (4)Permit Issued (2)Signed Off (2)Inspection (5)Objection (4)Special Inspection (12)
10/28/2022
Signed off — Alteration
Proposed interior renovation at cellar & 1st floor for existing residential building with new partition work and finish work as per plan. No change in use, egress, or occupancy.
B00703030-I1
10/26/2022
Signed off — Alteration
Propose plumbing work at cellar & 1st floor for existing 2-family building in conjunction with construction #B00703030 as per plan. No change in use, egress, or occupancy.
B00706738-I1
10/26/2022
Inspection — Pass-Final General Construction Non-Directive 14
Pass
View inspection ↗
10/21/2022
Inspection — Certified Water and Sanitary-WS-Fixtures-Finish
Certified
View inspection ↗
10/05/2022
Inspection — Fail-Final General Construction Non-Directive 14
Fail
View inspection ↗
09/30/2022
Special inspection requirement — Fire-Resistance Rated Construction
MOHAMED MAHMOUD
09/30/2022
Special inspection requirement — Fire-Resistant Penetrations and Joints
Xiong Wei Wu
09/30/2022
Special inspection requirement — Interior lighting power
MOHAMED MAHMOUD
09/30/2022
Special inspection requirement — Energy Code Compliance Inspections
MOHAMED MAHMOUD
09/23/2022
Objection resolved — Addressed
08/12/2022
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Roughing
Certified
View inspection ↗
08/12/2022
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Underground
Certified
View inspection ↗
08/03/2022
Special inspection requirement — Fire-Resistant Penetrations and Joints
Xiong Wei Wu
08/03/2022
Special inspection requirement — Energy Code Compliance Inspections
MOHAMED MAHMOUD
07/28/2022
Objection resolved — Addressed
07/07/2022
Objection raised — Other
06/30/2022
Objection raised — Scope
06/29/2022
Filed — Alteration
Propose plumbing work at cellar & 1st floor for existing 2-family building in conjunction with construction #B00703030 as per plan. No change in use, egress, or occupancy.
B00706738-P1
06/29/2022
Special inspection requirement — Fire-Resistant Penetrations and Joints
Xiong Wei Wu
06/29/2022
Special inspection requirement — Energy Code Compliance Inspections
MOHAMED MAHMOUD
06/27/2022
Filed — Alteration
Proposed interior renovation at cellar & 1st floor for existing residential building with new partition work and finish work as per plan. No change in use, egress, or occupancy.
B00703030-P1
06/27/2022
Special inspection requirement — Interior lighting power
MOHAMED MAHMOUD
06/27/2022
Special inspection requirement — Fire-Resistance Rated Construction
MOHAMED MAHMOUD
06/27/2022
Special inspection requirement — Energy Code Compliance Inspections
MOHAMED MAHMOUD
06/27/2022
Special inspection requirement — Fire-Resistant Penetrations and Joints
Xiong Wei Wu
04/29/2022
Permit issued — Plumbing
B00706738-I1-PL
04/04/2022
Permit issued — General Construction
B00703030-I1-GC
03/25/2022
Filed — Alteration
Proposed interior renovation at cellar & 1st floor for existing residential building with new partition work and finish work as per plan. No change in use, egress, or occupancy.
B00703030-I1
03/25/2022
Filed — Alteration
Propose plumbing work at cellar & 1st floor for existing 2-family building in conjunction with construction #B00703030 as per plan. No change in use, egress, or occupancy.
B00706738-I1
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWPlumbingSigned-offAMC PLBG, HTG & CLNG, INC04/29/2022
DOB NOWGeneral ConstructionSigned-offJZ CONSTRUCTION GROUP INC04/04/2022
1 project · most recent 05/05/2022
General Wiring
FiledStatusContractorScope
05/05/2022CompleteFIRST STAR ELECTRIC INCGeneral Wiring
▾Field Inspections (DOB CAP) — 5
DateTypeResultReport
10/26/2022Pass-Final General Construction Non-Directive 14PassView ↗
10/21/2022Certified Water and Sanitary-WS-Fixtures-FinishCertifiedView ↗
10/05/2022Fail-Final General Construction Non-Directive 14FailView ↗
08/12/2022Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
08/12/2022Certified Water and Sanitary-WS-Sanitary Piping-UndergroundCertifiedView ↗
▾Special Inspection Requirements (DOB NOW) — 12
DateRequirementInspectorRole
09/30/2022Fire-Resistance Rated ConstructionMOHAMED MAHMOUDprogress
09/30/2022Fire-Resistant Penetrations and JointsXiong Wei Wuspecial
09/30/2022Interior lighting powerMOHAMED MAHMOUDenergy_progress
09/30/2022Energy Code Compliance InspectionsMOHAMED MAHMOUDprogress
08/03/2022Fire-Resistant Penetrations and JointsXiong Wei Wuspecial
08/03/2022Energy Code Compliance InspectionsMOHAMED MAHMOUDprogress
06/29/2022Fire-Resistant Penetrations and JointsXiong Wei Wuspecial
06/29/2022Energy Code Compliance InspectionsMOHAMED MAHMOUDprogress
06/27/2022Interior lighting powerMOHAMED MAHMOUDenergy_progress
06/27/2022Fire-Resistance Rated ConstructionMOHAMED MAHMOUDprogress
06/27/2022Energy Code Compliance InspectionsMOHAMED MAHMOUDprogress
06/27/2022Fire-Resistant Penetrations and JointsXiong Wei Wuspecial
▾Documents — 29 on file (BIS + DOB NOW)
▸Plans & Drawings4
▸DOB NOWPlans/Sketch4
08/30/2026B00703030-I1Request digital key ↗
08/30/2026B00706738-I1Request digital key ↗
08/15/2026B00706738-P1Request digital key ↗
Showing 3 of 4 on file for this type
▸Zoning, Tax Lot & Property Records4
▸DOB NOWRestrictive Declaration/Easement 14
08/30/2026B00703030-I1Open ↗
08/13/2026B00706738-I1Open ↗
08/13/2026B00706738-P1Open ↗
Showing 3 of 4 on file for this type
▸Seals & Professional Certifications16
▸DOB NOWProgress Inspector Seal & Signature8
08/29/2026B00706738-P1Open ↗
08/28/2026B00706738-I1Open ↗
08/26/2026B00703030-P1Open ↗
Showing 3 of 8 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature4
08/30/2026B00703030-I1Open ↗
08/30/2026B00706738-P1Open ↗
08/30/2026B00706738-I1Open ↗
Showing 3 of 4 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature4
08/29/2026B00706738-P1Open ↗
08/28/2026B00706738-I1Open ↗
08/26/2026B00703030-P1Open ↗
Showing 3 of 4 on file for this type
▸Environmental & Asbestos4
▸DOB NOWDEP ACP-5: Asbestos Assessment Report4
08/30/2026B00703030-I1Open ↗
08/30/2026B00706738-I1Open ↗
08/15/2026B00706738-P1Open ↗
Showing 3 of 4 on file for this type
▸Energy Compliance1
▸DOB NOWEN2: As Built Energy Analysis1
08/13/2026B00703030-I1Open ↗