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Two family frame
147-11 21ST AVENUE
QUEENS · BIN 4624548
💬 Discuss this project
2023Year Built
2Stories
B2Building Class
R3AZoning
2,234 sfGross Floor Area
2Units
Two family frame · 3,333 sf lot · 0.67 FAR built · Flood zone X
Locations of Work
ArchitectureStructuralMechanicalPlumbingFire ProtectionCivil
Floor 210p · 1 filing · 20 docs
Floor 17p · 1 filing · 20 docs
Cellar11p · 1 filing · 20 docs
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
WHITESTONE BUILDERS2407/08/2026
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
09/12/2024$1.9M—— → —$861/sf building
10/28/2022$1.6M—Private party → WHITESTONE BUILDERS LLC— not available
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
BFS ARCHITECT PC805/14/2024
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
MASTORAS BUILDERS LLCGeneral Contractor903/21/2026
INFINITI ESC PLUMBING CORPlumbing107/08/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
BFS ARCHITECT PC7477705/14/2024
TRIANGLE INSPECTION & TES7495405/14/2024
Building Lifecycle
All (14)Filed (8)Permit Issued (4)Signed Off (2)
05/31/2024
Signed off — New Building
FILED HEREWITH FOR PLUMBING WORK IN CONJUNCTION WITH GC Q00836313-I1
Q00836313-S3
05/31/2024
Signed off — New Building
FILED HEREWITH FOR PLUMBING WORK IN CONJUNCTION WITH GC Q00836313-I1
Q00836313-S4
05/14/2024
Filed — New Building
FILED HEREWITH FOR PLUMBING WORK IN CONJUNCTION WITH GC Q00836313-I1
Q00836313-P6
04/09/2024
Permit issued — Curb Cut
Q00836313-S3-CC
04/04/2024
Filed — New Building
FILED HEREWITH FOR PLUMBING WORK IN CONJUNCTION WITH GC Q00836313-I1
Q00836313-P5
03/27/2024
Filed — New Building
FILED HEREWITH FOR PLUMBING WORK IN CONJUNCTION WITH GC Q00836313-I1
Q00836313-P4
03/05/2024
Filed — New Building
FILED HEREWITH FOR PLUMBING WORK IN CONJUNCTION WITH GC Q00836313-I1
Q00836313-P3
01/30/2024
Permit issued — Earth Work
Q00836313-I1-GC-CX
11/21/2023
Filed — New Building
FILED HEREWITH FOR PLUMBING WORK IN CONJUNCTION WITH GC Q00836313-I1
Q00836313-P1
09/27/2023
Permit issued — Plumbing
Q00836313-S4-PL
08/28/2023
Filed — New Building
FILED HEREWITH FOR PLUMBING WORK IN CONJUNCTION WITH GC Q00836313-I1
Q00836313-S4
07/20/2023
Permit issued — Mechanical Systems
Q00836313-I1-GC-CX
05/22/2023
Filed — New Building
FILED HEREWITH FOR PLUMBING WORK IN CONJUNCTION WITH GC Q00836313-I1
Q00836313-S3
03/17/2023
Filed — New Building
FILED HEREWITH FOR PLUMBING WORK IN CONJUNCTION WITH GC Q00836313-I1
Q00836313-I1
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWCurb CutSigned-offMASTORAS BUILDERS LLC04/09/2024
DOB NOWEarth WorkPermit IssuedMASTORAS BUILDERS LLC01/30/2024
DOB NOWPlumbingSigned-offINFINITI ESC PLUMBING COR09/27/2023
DOB NOWMechanical SystemsPermit IssuedMASTORAS BUILDERS LLC07/20/2023
1 project · most recent 05/14/2024
Air Conditioning Systems Associated Ducts and Piping Heating Systems Ventilation Systems
FiledStatusContractorScopeMake / Model / Capacity
05/14/2024Signed-offMASTORAS BUILDERS LLCAir Conditioning Systems, Associated Ducts and Piping, Heating Systems, Ventilation Systems
Cooling
Guardian RAC13L48B23SA 48,000 BTU · Condensing Unit ×2
Goodman GSXH504810 48,000 BTU · Condensing Unit ×2
Heating
Weil-Mclain GWI-058-N-T 58,000 BTU · Boiler ×2
Ventilation
Delta SLM501 50 CFM ×10
Adp BCRMC6948S3N3 48,000 BTU ×1
BVRMC3948S3N4 48,000 BTU ×1
Air King ES248ADA 150 CFM · Kitchen Exhaust ×4
Panasonic FV-10VEC2 (1.2 CFM/WATT) 1 CFM · Erv ×4
Comfort Aire AHG48-0A 1,740 CFM · Fan Coil Indoor ×2
Ducts & Piping
Weil-Mclain GV90+3 65,000 BTU · Boiler ×2
1 project · most recent 05/14/2024
Sprinkler System
FiledStatusContractorScope
05/14/2024——Sprinkler System
1 project · most recent 05/14/2024
Gas Plumbing-Sprinkler Storm Water/Sanitary
FiledStatusContractorScope
05/14/2024Signed-offINFINITI ESC PLUMBING CORGas, Plumbing-Sprinkler, Storm, Water/Sanitary
1 project · most recent 08/24/2023
General Wiring
FiledStatusContractorScope
08/24/2023CompletePOWER SURGE ELECTRIC, INCGeneral Wiring
1 project · most recent 05/14/2024
FiledStatusContractorScope
05/14/2024Signed-offMASTORAS BUILDERS LLC2 scope_items
▾Field Inspections (DOB CAP) — 7
DateTypeResultReport
07/03/2024Pass-Final CND-Occupancy InspectionPassView ↗
06/11/2024Pass-Final CND-Occupancy InspectionPassView ↗
05/17/2024Pass-Final Curb Cut Non-Directive 14PassView ↗
10/05/2023Certified Gas-Gas-Piping-RoughingCertifiedView ↗
10/05/2023Certified Storm Drainage-ST-Piping-RoughingCertifiedView ↗
10/05/2023Certified Storm Drainage-ST-Piping-UndergroundCertifiedView ↗
10/05/2023Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
▾Special Inspection Requirements (DOB NOW) — 92
DateRequirementInspectorRole
05/30/2024Heating SystemsBelal Salimspecial
05/30/2024Electric vehicle service equipment requirementsBelal Salimenergy_progress
05/30/2024Air barrier — testing Belal Salimenergy_progress
05/30/2024Fenestration and door U-factor and product ratingsBelal Salimenergy_progress
05/30/2024HVAC-R and service water piping design and insulationBelal Salimenergy_progress
05/30/2024Insulation placement and R valuesBelal Salimenergy_progress
05/30/2024HVAC-R and service water heating system controlsBelal Salimenergy_progress
05/30/2024Air barrier - visual inspectionBelal Salimenergy_progress
05/30/2024Maintenance informationBelal Salimenergy_progress
05/30/2024Fenestration air leakageBelal Salimenergy_progress
05/30/2024MeteringBelal Salimenergy_progress
05/30/2024HVAC-R and service water heating equipmentBelal Salimenergy_progress
05/30/2024Ventilation and air distribution systemBelal Salimenergy_progress
05/30/2024Duct leakage testing, insulation and designBelal Salimenergy_progress
05/30/2024Interior lighting powerBelal Salimenergy_progress
05/30/2024Fenestration areasBelal Salimenergy_progress
05/30/2024Permanent certificateBelal Salimenergy_progress
05/30/2024FinalBelal Salimprogress
05/30/2024Energy Code Compliance InspectionsBelal Salimprogress
05/30/2024Fire-Resistance Rated ConstructionBelal Salimprogress
05/30/2024Footing and FoundationBelal Salimprogress
05/30/2024Concrete - Cast-In-PlaceBelal Salimspecial
05/30/2024MasonryBelal Salimspecial
05/30/2024Mechanical SystemsBelal Salimspecial
05/30/2024Private On-Site Storm Water Disposal Systems-, and Detention Facilities, InstallationBelal Salimspecial
Latest 25 of 92.
▾Documents — 73 on file (BIS + DOB NOW)
▸Plans & Drawings8
▸DOB NOWPlans/Sketch8
08/22/2026Q00836313-S4Request digital key ↗
08/22/2026Q00836313-P3Request digital key ↗
08/22/2026Q00836313-P4Request digital key ↗
Showing 3 of 8 on file for this type
▸Zoning, Tax Lot & Property Records6
▸DOB NOWZD1: DOB Zoning Diagram3
08/13/2026Q00836313-I1Open ↗
08/13/2026Q00836313-P5Open ↗
08/13/2026Q00836313-P1Open ↗
▸DOB NOWZoning Exhibit form (1-5)2
08/13/2026Q00836313-I1Open ↗
08/13/2026Q00836313-P5Open ↗
▸DOB NOWHouse Number Verification: TOPO Stamp1
08/13/2026Q00836313-I1Open ↗
▸Seals & Professional Certifications32
▸DOB NOWProgress Inspector Seal & Signature12
09/01/2026Q00836313-P4Open ↗
09/01/2026Q00836313-P4Open ↗
09/01/2026Q00836313-P1Open ↗
Showing 3 of 12 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature12
09/01/2026Q00836313-P4Open ↗
09/01/2026Q00836313-P4Open ↗
09/01/2026Q00836313-P1Open ↗
Showing 3 of 12 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature8
08/13/2026Q00836313-P4Open ↗
08/13/2026Q00836313-P5Open ↗
08/13/2026Q00836313-P6Open ↗
Showing 3 of 8 on file for this type
▸Trade Schedules & Equipment3
▸DOB NOWDEP: Sewer Certification (Sanitary/Storm)3
08/13/2026Q00836313-I1Open ↗
08/13/2026Q00836313-P1Open ↗
08/13/2026Q00836313-P5Open ↗
▸Safety & Tenant Protection6
▸DOB NOWStreet Tree Checklist3
08/13/2026Q00836313-P5Open ↗
08/13/2026Q00836313-I1Open ↗
08/13/2026Q00836313-P1Open ↗
▸DOB NOWStreet Tree Sign Off1
08/13/2026Q00836313-I1Open ↗
▸DOB NOWStreet Trees Site Plan1
08/13/2026Q00836313-I1Open ↗
▸DOB NOWParks Department Acknowledgment Letter for Street Trees Plan1
08/13/2026Q00836313-I1Open ↗
▸Inspections & Test Reports7
▸DOB NOWSOIL REPORT3
08/13/2026Q00836313-P5Open ↗
08/13/2026Q00836313-I1Open ↗
08/13/2026Q00836313-P1Open ↗
▸DOB NOWGeotechnical Report (BC 1803.6)3
08/13/2026Q00836313-P1Open ↗
08/13/2026Q00836313-I1Open ↗
08/13/2026Q00836313-P5Open ↗
▸DOB NOWTR4 Test Report and Plot Diagram1
08/13/2026Q00836313-I1Open ↗
▸Other Documents11
▸DOB NOWSite Survey: Initial3
08/13/2026Q00836313-P5Open ↗
08/13/2026Q00836313-P1Open ↗
08/13/2026Q00836313-I1Open ↗
▸DOB NOWLocal Law 92/94 of 2019 Sustainable Roof Zone3
08/13/2026Q00836313-I1Open ↗
08/13/2026Q00836313-P5Open ↗
08/13/2026Q00836313-P1Open ↗
▸DOB NOWProperty Ownership Certification3
08/13/2026Q00836313-I1Open ↗
08/13/2026Q00836313-P1Open ↗
08/13/2026Q00836313-P5Open ↗
▸DOB NOWFinal Survey1
08/13/2026Q00836313-I1Open ↗
▸DOB NOWAdjoining Owners Notification1
08/13/2026Q00836313-I1Open ↗