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Two stories - detached, small or mid-size
2156 EAST 21 STREET
BROOKLYN · BIN 3198321
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1930Year Built
2Stories
A1Building Class
R4Zoning
1,336 sfGross Floor Area
1Units
3 Open Violations 2 unresolved · 1 paperwork only ▸FDNY Report ↗
Two stories - detached, small or mid-size · 2,250 sf lot · 0.59 FAR built · Flood zone X
Locations of Work
Architecture
Cellar2p · 1 filing · 9 docs
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
07/18/2024$900K—— → —$674/sf building
05/13/2024$661K—Private party → Private party$495/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
MSM ENGINEERING SERVICES, PLLC111/26/2025
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
MISTER EXPEDITER103/21/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
MSM ENGINEERING SERVICES,8449111/26/2025
Building Lifecycle
All (50)Filed (1)Violation (4)Objection (32)Special Inspection (13)
08/25/2026
Objection raised — Scope
07/07/2026
Objection resolved — Addressed
06/03/2026
Objection resolved — Addressed
06/03/2026
Objection resolved — Addressed
05/06/2026
Objection resolved — Addressed
05/06/2026
Objection resolved — Addressed
04/27/2026
Objection resolved — Addressed
04/13/2026
Objection resolved — Resolved
04/10/2026
Objection raised — Zoning
04/10/2026
Objection raised — Zoning
03/20/2026
Objection resolved — Addressed
03/20/2026
Objection resolved — Addressed
03/20/2026
Objection resolved — Addressed
03/12/2026
Objection raised — Scope
03/12/2026
Objection raised — Cost
02/02/2026
Objection resolved — Addressed
02/02/2026
Objection resolved — Addressed
01/20/2026
Objection raised — Scope
01/06/2026
Objection resolved — Addressed
12/29/2025
Objection raised — Zoning
12/10/2025
Objection resolved — Addressed
12/10/2025
Objection resolved — Addressed
12/09/2025
Objection raised — Scope
12/09/2025
Objection raised — Scope
12/08/2025
Objection raised — Plumbing
12/08/2025
Objection raised — Energy
12/08/2025
Objection raised — Zoning
12/08/2025
Objection raised — Scope
12/08/2025
Objection raised — Scope
12/08/2025
Objection raised — Scope
12/08/2025
Objection raised — Scope
12/08/2025
Objection raised — Scope
11/26/2025
Filed — Alteration
Herewith filing for horizontal enlargement, no change in use, layout, egress, or occupancy.
B01314972-I1
11/25/2025
Special inspection requirement — Air barrier - visual inspection
MOHAMED MAHMOUD
11/25/2025
Special inspection requirement — Structural Stability – Alterations of existing buildings
MOHAMED MAHMOUD
11/25/2025
Special inspection requirement — Fire-Resistant Penetrations and Joints
MOHAMED MAHMOUD
11/25/2025
Special inspection requirement — Energy Code Compliance Inspections
MOHAMED MAHMOUD
11/25/2025
Special inspection requirement — Fire-Resistance Rated Construction
MOHAMED MAHMOUD
11/25/2025
Special inspection requirement — Fenestration areas
MOHAMED MAHMOUD
11/25/2025
Special inspection requirement — Fenestration air leakage
MOHAMED MAHMOUD
11/25/2025
Special inspection requirement — Metering
MOHAMED MAHMOUD
11/25/2025
Special inspection requirement — Air barrier — testing
MOHAMED MAHMOUD
11/25/2025
Special inspection requirement — Permanent certificate
MOHAMED MAHMOUD
11/25/2025
Special inspection requirement — Fenestration and door U-factor and product ratings
MOHAMED MAHMOUD
11/25/2025
Special inspection requirement — Insulation placement and R values
MOHAMED MAHMOUD
11/06/2025
Special inspection requirement — Final
Feng Zhang
08/26/2025
Violation issued (ECB, open)
Construction
01/28/2025
Violation issued (ECB, open)
Construction
12/05/2024
Violation issued (DOB, open)
V-DOB VIOLATION - ACTIVE
09/12/2017
Violation issued (ECB, closed)
Construction
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
BISOTISSUEDCENTURION SOLAR ENERGY11/04/2020
1 project · most recent 12/01/2020
FiledStatusContractorScope
12/01/2020CompleteBERGER QUALITY ELEC'L CON—
1 project · most recent 11/26/2025
FiledStatusContractorScope
11/26/2025——1 scope_items
▾Special Inspection Requirements (DOB NOW) — 13
DateRequirementInspectorRole
11/25/2025Air barrier - visual inspectionMOHAMED MAHMOUDenergy_progress
11/25/2025Structural Stability – Alterations of existing buildingsMOHAMED MAHMOUDspecial
11/25/2025Fire-Resistant Penetrations and JointsMOHAMED MAHMOUDspecial
11/25/2025Energy Code Compliance InspectionsMOHAMED MAHMOUDprogress
11/25/2025Fire-Resistance Rated ConstructionMOHAMED MAHMOUDprogress
11/25/2025Fenestration areasMOHAMED MAHMOUDenergy_progress
11/25/2025Fenestration air leakageMOHAMED MAHMOUDenergy_progress
11/25/2025MeteringMOHAMED MAHMOUDenergy_progress
11/25/2025Air barrier — testing MOHAMED MAHMOUDenergy_progress
11/25/2025Permanent certificateMOHAMED MAHMOUDenergy_progress
11/25/2025Fenestration and door U-factor and product ratingsMOHAMED MAHMOUDenergy_progress
11/25/2025Insulation placement and R valuesMOHAMED MAHMOUDenergy_progress
11/06/2025FinalFeng Zhangprogress
▾Documents — 29 on file (BIS + DOB NOW)
▸Plans & Drawings1
▸DOB NOWPlans/Sketch1
08/15/2026B01314972-I1Request digital key ↗
▸Applications & Permits2
▸BISPLAN / WORK APPROVAL APPLICATION1
10/30/2020340781050Open ↗
▸BISWORK PERMIT APPLICATION1
11/04/2020340781050Open ↗
▸Zoning, Tax Lot & Property Records3
▸DOB NOWZD1: DOB Zoning Diagram2
08/15/2026B01314972-I1Open ↗
08/13/2026B01314972-I1Open ↗
▸DOB NOWZoning Exhibit form (1-5)1
08/13/2026B01314972-I1Open ↗
▸Seals & Professional Certifications4
▸BISREQUIRED ITEMS CHECKLIST FOR PROFESSIONAL CERTIFICATION1
10/30/2020340781050Open ↗
▸BISPROFESSIONAL CERTIFICATION STATEMENT1
10/30/2020340781050Open ↗
▸BISTECHNICAL REPORT STATEMENT OF RESPONSIBILITY1
10/30/2020340781050Open ↗
▸DOB NOWDPL-1: Design Professional Seal & Signature1
08/19/2026B01314972-I1Open ↗
▸Safety & Tenant Protection1
▸BISTENANT PROTECTION PLAN AND NOTES1
10/30/2020340781050Open ↗
▸Environmental & Asbestos2
▸BISASBESTOS: CERTIFICATION (DEP ACP5)1
10/30/2020340781050Open ↗
▸DOB NOWDEP ACP-5: Asbestos Assessment Report1
08/15/2026B01314972-I1Open ↗
▸Energy Compliance6
▸BISTECHNICAL REPORT: ENERGY CODE - RESPONSIBILITY2
06/10/2021340781050Open ↗
10/30/2020340781050Open ↗
▸BISTECHNICAL REPORT STATEMENT OF RESPONSIBILITY FOR ENERGY CODE PROGRESS INSPECTIONS1
10/30/2020340781050Open ↗
▸BISPTA4: SOLAR TAX ABATEMENT APPLICATION (PRELIMINARY)1
10/30/2020340781050Open ↗
▸BISPTA4: SOLAR TAX ABATEMENT APPLICATION (FINAL)1
06/10/2021340781050Open ↗
▸BISAS-BUILT ENERGY ANALYSIS1
06/10/2021340781050Open ↗
▸Inspections & Test Reports2
▸BISTECHNICAL REPORT: RESPONSIBILITY2
06/10/2021340781050Open ↗
10/30/2020340781050Open ↗
▸Approvals, Objections & Sign-offs1
▸BISCERTIFICATE OF OCCUPANCY/LOC: REQUEST1
06/10/2021340781050Open ↗
▸Cost, Insurance & Ownership2
▸BISCOST AFFIDAVIT2
06/10/2021340781050Open ↗
10/30/2020340781050Open ↗
▸Filing & Intake Forms1
▸BISEFILING JOB APPLICATION COVER SHEET1
10/30/2020340781050Open ↗
▸Other Documents4
▸BISTax Abatement Miscellaneous1
06/10/2021340781050Open ↗
▸DOB NOWLocal Law 92/94 of 2019 Sustainable Roof Zone1
08/13/2026B01314972-I1Open ↗
▸DOB NOWPlot Diagram1
08/13/2026B01314972-I1Open ↗
▸DOB NOWSite Survey: Initial1
08/13/2026B01314972-I1Open ↗