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Two family brick
28-12 21 AVENUE
QUEENS · BIN 4017751
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1930Year Built
3Stories
B1Building Class
R5BZoning
1,998 sfGross Floor Area
2Units
Two family brick · Owner of record: IRVLAND LLC · 1,800 sf lot · 1.11 FAR built · Flood zone X
Locations of Work
Plumbing
Floor 11p · 1 filing · 20 docs
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
07/10/2025$900K—— → —$450/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
SQUARE ARCH, LLC401/30/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
NAN TONG JIN YI CONSTRUCTGeneral Contractor104/09/2026
ROCK E SMALL PLBG&HTG INCPlumbing107/08/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
HUAN DESIGN INC7669401/30/2026
SQ. ARCH, LLC4802401/30/2026
Building Lifecycle
All (33)Filed (4)Permit Issued (2)Signed Off (2)Inspection (5)Special Inspection (20)
08/07/2026
Inspection — Pass-Final General Construction Non-Directive 14
Pass
View inspection ↗
05/28/2026
Signed off — Alteration
TO PROPOSE PLUMBING WOR OF EXISTING TWO FAMILY HOUSE ON CELLAR, 001 AND 002 FLOOR AS PER PLAN FILED HEREWITH. NO CHANGE OF USE, EGRESS OR CERTIFICATE OF OCCUPANCY.
Q01279114-I1
05/28/2026
Signed off — Alteration
TO PROPOSE PLUMBING WOR OF EXISTING TWO FAMILY HOUSE ON CELLAR, 001 AND 002 FLOOR AS PER PLAN FILED HEREWITH. NO CHANGE OF USE, EGRESS OR CERTIFICATE OF OCCUPANCY.
Q01279114-S1
02/03/2026
Special inspection requirement — Tenant Protection Plan Compliance
ZHENHUAN XU
02/03/2026
Special inspection requirement — Mechanical Systems
ZHENHUAN XU
02/03/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
Kaijin Liang
02/03/2026
Special inspection requirement — Energy Code Compliance Inspections
Kaijin Liang
02/03/2026
Special inspection requirement — Final
Kaijin Liang
02/03/2026
Special inspection requirement — HVAC-R and service water heating system controls
Kaijin Liang
02/03/2026
Special inspection requirement — HVAC-R and service water piping design and insulation
Kaijin Liang
02/03/2026
Special inspection requirement — HVAC-R and service water heating equipment
Kaijin Liang
02/03/2026
Special inspection requirement — Interior lighting power
Kaijin Liang
02/03/2026
Special inspection requirement — Duct leakage testing, insulation and design
Kaijin Liang
01/30/2026
Filed — Alteration
TO PROPOSE PLUMBING WOR OF EXISTING TWO FAMILY HOUSE ON CELLAR, 001 AND 002 FLOOR AS PER PLAN FILED HEREWITH. NO CHANGE OF USE, EGRESS OR CERTIFICATE OF OCCUPANCY.
Q01279114-P2
01/29/2026
Filed — Alteration
TO PROPOSE PLUMBING WOR OF EXISTING TWO FAMILY HOUSE ON CELLAR, 001 AND 002 FLOOR AS PER PLAN FILED HEREWITH. NO CHANGE OF USE, EGRESS OR CERTIFICATE OF OCCUPANCY.
Q01279114-P3
01/27/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
Kaijin Liang
01/27/2026
Special inspection requirement — Mechanical Systems
ZHENHUAN XU
01/27/2026
Special inspection requirement — Tenant Protection Plan Compliance
ZHENHUAN XU
01/27/2026
Special inspection requirement — Energy Code Compliance Inspections
Kaijin Liang
01/27/2026
Special inspection requirement — Final
Kaijin Liang
01/27/2026
Special inspection requirement — HVAC-R and service water heating equipment
Kaijin Liang
01/27/2026
Special inspection requirement — Duct leakage testing, insulation and design
Kaijin Liang
01/27/2026
Special inspection requirement — HVAC-R and service water piping design and insulation
Kaijin Liang
01/27/2026
Special inspection requirement — HVAC-R and service water heating system controls
Kaijin Liang
01/27/2026
Special inspection requirement — Interior lighting power
Kaijin Liang
11/26/2025
Inspection — Certified Gas-Gas-Piping-Roughing
Certified
View inspection ↗
11/26/2025
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Roughing
Certified
View inspection ↗
11/26/2025
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Underground
Certified
View inspection ↗
11/24/2025
Inspection — Certified Remove/Cap - work done in accordance with code
Certified
View inspection ↗
09/11/2025
Permit issued — General Construction
Q01279114-I1-GC-CX
09/10/2025
Permit issued — Plumbing
Q01279114-S1-PL
09/04/2025
Filed — Alteration
TO PROPOSE PLUMBING WOR OF EXISTING TWO FAMILY HOUSE ON CELLAR, 001 AND 002 FLOOR AS PER PLAN FILED HEREWITH. NO CHANGE OF USE, EGRESS OR CERTIFICATE OF OCCUPANCY.
Q01279114-I1
09/04/2025
Filed — Alteration
TO PROPOSE PLUMBING WOR OF EXISTING TWO FAMILY HOUSE ON CELLAR, 001 AND 002 FLOOR AS PER PLAN FILED HEREWITH. NO CHANGE OF USE, EGRESS OR CERTIFICATE OF OCCUPANCY.
Q01279114-S1
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWGeneral ConstructionSigned-offNAN TONG JIN YI CONSTRUCT09/11/2025
DOB NOWPlumbingSigned-offROCK E SMALL PLBG&HTG INC09/10/2025
1 project · most recent 10/27/2025
General Wiring
FiledStatusContractorScope
10/27/2025CompleteINTELOGIC ELECTRIC, INC.General Wiring
▾Field Inspections (DOB CAP) — 5
DateTypeResultReport
08/07/2026Pass-Final General Construction Non-Directive 14PassView ↗
11/26/2025Certified Gas-Gas-Piping-RoughingCertifiedView ↗
11/26/2025Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
11/26/2025Certified Water and Sanitary-WS-Sanitary Piping-UndergroundCertifiedView ↗
11/24/2025Certified Remove/Cap - work done in accordance with codeCertifiedView ↗
▾Special Inspection Requirements (DOB NOW) — 20
DateRequirementInspectorRole
02/03/2026Tenant Protection Plan ComplianceZHENHUAN XUspecial
02/03/2026Mechanical SystemsZHENHUAN XUspecial
02/03/2026Fire-Resistant Penetrations and JointsKaijin Liangspecial
02/03/2026Energy Code Compliance InspectionsKaijin Liangprogress
02/03/2026FinalKaijin Liangprogress
02/03/2026HVAC-R and service water heating system controlsKaijin Liangenergy_progress
02/03/2026HVAC-R and service water piping design and insulationKaijin Liangenergy_progress
02/03/2026HVAC-R and service water heating equipmentKaijin Liangenergy_progress
02/03/2026Interior lighting powerKaijin Liangenergy_progress
02/03/2026Duct leakage testing, insulation and designKaijin Liangenergy_progress
01/27/2026Fire-Resistant Penetrations and JointsKaijin Liangspecial
01/27/2026Mechanical SystemsZHENHUAN XUspecial
01/27/2026Tenant Protection Plan ComplianceZHENHUAN XUspecial
01/27/2026Energy Code Compliance InspectionsKaijin Liangprogress
01/27/2026FinalKaijin Liangprogress
01/27/2026HVAC-R and service water heating equipmentKaijin Liangenergy_progress
01/27/2026Duct leakage testing, insulation and designKaijin Liangenergy_progress
01/27/2026HVAC-R and service water piping design and insulationKaijin Liangenergy_progress
01/27/2026HVAC-R and service water heating system controlsKaijin Liangenergy_progress
01/27/2026Interior lighting powerKaijin Liangenergy_progress
▾Documents — 20 on file (BIS + DOB NOW)
▸Plans & Drawings4
▸DOB NOWPlans/Sketch4
08/17/2026Q01279114-S1Request digital key ↗
08/17/2026Q01279114-I1Request digital key ↗
08/17/2026Q01279114-P2Request digital key ↗
Showing 3 of 4 on file for this type
▸Seals & Professional Certifications12
▸DOB NOWDPL-1: Design Professional Seal & Signature4
08/17/2026Q01279114-S1Open ↗
08/17/2026Q01279114-I1Open ↗
08/17/2026Q01279114-P3Open ↗
Showing 3 of 4 on file for this type
▸DOB NOWProgress Inspector Seal & Signature4
08/31/2026Q01279114-P2Open ↗
08/31/2026Q01279114-P2Open ↗
08/25/2026Q01279114-I1Open ↗
Showing 3 of 4 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature4
08/31/2026Q01279114-P2Open ↗
08/31/2026Q01279114-P2Open ↗
08/25/2026Q01279114-I1Open ↗
Showing 3 of 4 on file for this type
▸Environmental & Asbestos4
▸DOB NOWDEP ACP-5: Asbestos Assessment Report4
08/17/2026Q01279114-P2Open ↗
08/17/2026Q01279114-I1Open ↗
08/17/2026Q01279114-P3Open ↗
Showing 3 of 4 on file for this type