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Two stories - detached, small or mid-size
221 ST JOHN AVENUE
STATEN ISLAND · BIN 5011938
💬 Discuss this project
1915Year Built
2.5Stories
A1Building Class
R3XZoning
1,162 sfGross Floor Area
1Units
0 Open ViolationsFDNY Report ↗
Two stories - detached, small or mid-size · 6,000 sf lot · 0.19 FAR built · Flood zone X
Locations of Work
ArchitectureStructuralElectrical
Permit Issued — active, not yet Signed-off
Roof1 filing · 6 docs
Floor 3Under Construction13p · 1 filing · 20 docs
Floor 2Under Construction13p · 1 filing · 20 docs
Floor 1Under Construction13p · 1 filing · 20 docs
BasementUnder Construction13p · 1 filing · 20 docs
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
SLA CONTRACTORS107/22/2026
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
SIERRA CONSTRUCTION107/16/2026
NY BUILDING ASSOCIATES INC112/17/2025
NORTHLINE ARCHITECTS111/19/2025
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
JENNY FLORES EXPEDITING103/21/2026
S R SOLAR DESIGN203/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
SLA CONTRACTORS LLCGeneral Contractor407/22/2026
J SYNERGY GREEN INCGeneral Contractor104/09/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
NKM ENGINEERING PLLC6244112/17/2025
JIAN ENGINEERING PLLC7397111/19/2025
Building Lifecycle
All (35)Filed (3)Permit Issued (5)Violation (1)Objection (1)Special Inspection (25)
07/20/2026
Permit issued — Construction Fence
S01429113-I1-FN
07/16/2026
Filed — Alteration
Filing for construction fence.
S01429113-I1
07/09/2026
Permit issued — General Construction
S01318816-I1-ST
07/09/2026
Permit issued — Foundation
S01318816-I1-GC
07/09/2026
Permit issued — Structural
S01318816-I1-FO
01/12/2026
Objection raised — Scope
12/26/2025
Permit issued — Solar
S01324702-I1-SL
12/17/2025
Filed — Alteration
INSTALLATION OF SOLAR PANELS ON EXISTING ROOF. NO CHANGE IN USE, OCCUPANCY, OR EGRESS. NO CHANGE IN BULK
S01324702-I1
12/05/2025
Special inspection requirement — Fenestration areas
JIAN DENG
12/05/2025
Special inspection requirement — Protection of exposed foundation insulation
JIAN DENG
12/05/2025
Special inspection requirement — Permanent certificate
JIAN DENG
12/05/2025
Special inspection requirement — Maintenance information
JIAN DENG
12/05/2025
Special inspection requirement — Air barrier - visual inspection
JIAN DENG
12/05/2025
Special inspection requirement — Metering
JIAN DENG
12/05/2025
Special inspection requirement — Fenestration and door U-factor and product ratings
JIAN DENG
12/05/2025
Special inspection requirement — Insulation placement and R values
JIAN DENG
12/05/2025
Special inspection requirement — Air barrier — testing
JIAN DENG
12/05/2025
Special inspection requirement — Fenestration air leakage
JIAN DENG
11/25/2025
Special inspection requirement — Air barrier - visual inspection
NARESH MAHANGU
11/25/2025
Special inspection requirement — Fire-Resistant Penetrations and Joints
NARESH MAHANGU
11/25/2025
Special inspection requirement — Structural Stability – Alterations of existing buildings
NARESH MAHANGU
11/25/2025
Special inspection requirement — Energy Code Compliance Inspections
NARESH MAHANGU
11/25/2025
Special inspection requirement — Final
NARESH MAHANGU
11/19/2025
Filed — Alteration CO
HEREBY FILING FOR RENOVATION AND ENLARGEMENT TO EXISTING DWELLING.
S01318816-I1
11/13/2025
Special inspection requirement — Fire-Resistant Penetrations and Joints
JIAN DENG
11/13/2025
Special inspection requirement — Excavations - Sheeting, Shoring, and Bracing
JIAN DENG
11/13/2025
Special inspection requirement — Subsurface Investigations (Borings/Test Pits)
JIAN DENG
11/13/2025
Special inspection requirement — Wood – Prefabricated I-Joists
JIAN DENG
11/13/2025
Special inspection requirement — Construction Utilizing CLT or SCL, Type IV
JIAN DENG
11/13/2025
Special inspection requirement — Final
Douglas Templeton
11/13/2025
Special inspection requirement — Footing and Foundation
Douglas Templeton
11/13/2025
Special inspection requirement — Structural Steel - Details
JIAN DENG
11/13/2025
Special inspection requirement — Masonry
JIAN DENG
11/13/2025
Special inspection requirement — Structural Stability – Alterations of existing buildings
JIAN DENG
06/23/2010
Violation issued (ECB, closed)
Construction
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWConstruction FencePermit IssuedSLA CONTRACTORS LLC07/20/2026
DOB NOWGeneral ConstructionPermit IssuedSLA CONTRACTORS LLC07/09/2026
DOB NOWFoundationPermit IssuedSLA CONTRACTORS LLC07/09/2026
DOB NOWStructuralPermit IssuedSLA CONTRACTORS LLC07/09/2026
DOB NOWSolarPermit IssuedJ SYNERGY GREEN12/26/2025
1 job · most recent 12/16/2025
FiledStatusContractorScope
12/16/2025Permit IssuedGREEN LIGHT ELECL & MECH—
1 job · most recent 11/19/2025
Steel Concrete Masonry Wood
FiledStatusContractorScope
11/19/2025Permit IssuedSLA CONTRACTORS LLCSteel, Concrete, Masonry, Wood
1 job · most recent 12/17/2025
FiledStatusContractorScope
12/17/2025Permit IssuedJ SYNERGY GREEN INC52 panels, 22.88 kw, 1,399.24 roof_area_sqft
1 job · most recent 07/16/2026
Fence
FiledStatusContractorScope
07/16/2026Permit IssuedSLA CONTRACTORS LLCFence
▾Special Inspection Requirements (DOB NOW) — 25
DateRequirementInspectorRole
12/05/2025Fenestration areasJIAN DENGenergy_progress
12/05/2025Protection of exposed foundation insulationJIAN DENGenergy_progress
12/05/2025Permanent certificateJIAN DENGenergy_progress
12/05/2025Maintenance informationJIAN DENGenergy_progress
12/05/2025Air barrier - visual inspectionJIAN DENGenergy_progress
12/05/2025MeteringJIAN DENGenergy_progress
12/05/2025Fenestration and door U-factor and product ratingsJIAN DENGenergy_progress
12/05/2025Insulation placement and R valuesJIAN DENGenergy_progress
12/05/2025Air barrier — testing JIAN DENGenergy_progress
12/05/2025Fenestration air leakageJIAN DENGenergy_progress
11/25/2025Air barrier - visual inspectionNARESH MAHANGUenergy_progress
11/25/2025Fire-Resistant Penetrations and JointsNARESH MAHANGUspecial
11/25/2025Structural Stability – Alterations of existing buildingsNARESH MAHANGUspecial
11/25/2025Energy Code Compliance InspectionsNARESH MAHANGUprogress
11/25/2025FinalNARESH MAHANGUprogress
11/13/2025Fire-Resistant Penetrations and JointsJIAN DENGspecial
11/13/2025Excavations - Sheeting, Shoring, and BracingJIAN DENGspecial
11/13/2025Subsurface Investigations (Borings/Test Pits)JIAN DENGspecial
11/13/2025Wood – Prefabricated I-JoistsJIAN DENGspecial
11/13/2025Construction Utilizing CLT or SCL, Type IVJIAN DENGspecial
11/13/2025FinalDouglas Templetonprogress
11/13/2025Footing and FoundationDouglas Templetonprogress
11/13/2025Structural Steel - DetailsJIAN DENGspecial
11/13/2025MasonryJIAN DENGspecial
11/13/2025Structural Stability – Alterations of existing buildingsJIAN DENGspecial
▾Documents — 31 on file (BIS + DOB NOW)
▸Plans & Drawings3
▸DOB NOWPlans/Sketch3
08/17/2026S01318816-I1Request digital key ↗
08/17/2026S01324702-I1Request digital key ↗
08/16/2026S01429113-I1Request digital key ↗
▸Zoning, Tax Lot & Property Records4
▸DOB NOWZD1: DOB Zoning Diagram2
08/17/2026S01318816-I1Open ↗
08/13/2026S01318816-I1Open ↗
▸DOB NOWHouse Number Verification: TOPO Stamp1
08/13/2026S01318816-I1Open ↗
▸DOB NOWZoning Exhibit form (1-5)1
08/17/2026S01318816-I1Open ↗
▸Seals & Professional Certifications10
▸DOB NOWProgress Inspector Seal & Signature4
09/01/2026S01318816-I1Open ↗
09/01/2026S01318816-I1Open ↗
08/22/2026S01324702-I1Open ↗
Showing 3 of 4 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature3
08/16/2026S01429113-I1Open ↗
08/13/2026S01318816-I1Open ↗
08/13/2026S01324702-I1Open ↗
▸DOB NOWSpecial Inspector Seal & Signature3
09/01/2026S01318816-I1Open ↗
09/01/2026S01318816-I1Open ↗
08/22/2026S01324702-I1Open ↗
▸Safety & Tenant Protection2
▸DOB NOWParks Department Acknowledgment Letter for Street Trees Plan1
08/17/2026S01318816-I1Open ↗
▸DOB NOWStreet Tree Checklist1
08/13/2026S01318816-I1Open ↗
▸Environmental & Asbestos3
▸DOB NOWDEP ACP-5: Asbestos Assessment Report3
08/17/2026S01318816-I1Open ↗
08/13/2026S01324702-I1Open ↗
08/13/2026S01318816-I1Open ↗
▸Inspections & Test Reports3
▸DOB NOWGeotechnical Report (BC 1803.6)1
08/13/2026S01318816-I1Open ↗
▸DOB NOWTR4 Test Report and Plot Diagram1
08/13/2026S01318816-I1Open ↗
▸DOB NOWSOIL REPORT1
08/13/2026S01318816-I1Open ↗
▸Other Documents6
▸DOB NOWPlot Diagram2
08/17/2026S01318816-I1Open ↗
08/13/2026S01318816-I1Open ↗
▸DOB NOWProperty Ownership Certification2
08/17/2026S01318816-I1Open ↗
08/13/2026S01318816-I1Open ↗
▸DOB NOWSite Survey: Initial1
08/13/2026S01318816-I1Open ↗
▸DOB NOWLocal Law 92/94 of 2019 Sustainable Roof Zone1
08/13/2026S01318816-I1Open ↗