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One story - permanent living quarter
1255 MASON AVENUE
STATEN ISLAND · BIN 5054373
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1960Year Built
1Stories
A2Building Class
R3-1Zoning
960 sfGross Floor Area
1Units
FDNY Report ↗
One story - permanent living quarter · 4,000 sf lot · 0.24 FAR built · Flood zone X500
Locations of Work
Structural
Permit Issued — active, not yet Signed-off
Floor 2Under Construction3p · 1 filing · 20 docs
Floor 1Under Construction3p · 1 filing · 20 docs
CellarUnder Construction3p · 1 filing · 20 docs
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
NYX ENGINEERING, PLLC308/26/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
LXC CONSTRUCTION INCGeneral Contractor108/05/2026
NEW LAND CONSTRUCTION NYGeneral Contractor107/28/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
NYX ENGINEERING, PLLC6118103/24/2026
Building Lifecycle
All (36)Filed (3)Permit Issued (2)Objection (4)Special Inspection (27)
08/26/2026
Filed — ALT-CO - New Building with Existing Elements to Remain
HORIZONTAL AND VERTICAL ENLARGEMENT AS PER PLANS TO CONSTRUCT A 2-STORY 2-FAMILY RESIDENTIAL BUILDING AND OBTAIN NEW C OF O.
S01350349-S2
08/04/2026
Permit issued — Structural
S01350349-I1-GC-CX
07/27/2026
Permit issued — Construction Fence
S01350349-S1-FN
07/09/2026
Special inspection requirement — Sprinkler Systems
07/09/2026
Special inspection requirement — Maintenance information
07/09/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
07/09/2026
Special inspection requirement — Energy Code Compliance Inspections
07/09/2026
Special inspection requirement — HVAC-R and service water heating equipment
07/09/2026
Special inspection requirement — HVAC-R and service water heating system controls
07/09/2026
Special inspection requirement — HVAC-R and service water piping design and insulation
04/27/2026
Filed — ALT-CO - New Building with Existing Elements to Remain
HORIZONTAL AND VERTICAL ENLARGEMENT AS PER PLANS TO CONSTRUCT A 2-STORY 2-FAMILY RESIDENTIAL BUILDING AND OBTAIN NEW C OF O.
S01350349-S1
04/20/2026
Objection raised — Fire_Protection
04/20/2026
Objection raised — Cost
04/20/2026
Objection raised — Zoning
04/20/2026
Objection raised — Scope
03/24/2026
Filed — ALT-CO - New Building with Existing Elements to Remain
HORIZONTAL AND VERTICAL ENLARGEMENT AS PER PLANS TO CONSTRUCT A 2-STORY 2-FAMILY RESIDENTIAL BUILDING AND OBTAIN NEW C OF O.
S01350349-I1
03/24/2026
Special inspection requirement — Structural Wood Frame
Xiao Huang
03/19/2026
Special inspection requirement — Protection of exposed foundation insulation
Xiao Huang
03/19/2026
Special inspection requirement — Concrete - Cast-In-Place
Xiao Huang
03/19/2026
Special inspection requirement — Excavations - Sheeting, Shoring, and Bracing
Xiao Huang
03/19/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
Xiao Huang
03/19/2026
Special inspection requirement — Insulation placement and R values
Xiao Huang
03/19/2026
Special inspection requirement — Maintenance information
Xiao Huang
03/19/2026
Special inspection requirement — Permanent certificate
Xiao Huang
03/19/2026
Special inspection requirement — Energy Code Compliance Inspections
Xiao Huang
03/19/2026
Special inspection requirement — Fire-Resistance Rated Construction
Xiao Huang
03/19/2026
Special inspection requirement — Fenestration air leakage
Xiao Huang
03/19/2026
Special inspection requirement — Interior lighting power
Xiao Huang
03/19/2026
Special inspection requirement — Air barrier - visual inspection
Xiao Huang
03/19/2026
Special inspection requirement — Fenestration areas
Xiao Huang
03/19/2026
Special inspection requirement — Air barrier — testing
Xiao Huang
03/19/2026
Special inspection requirement — Fenestration and door U-factor and product ratings
Xiao Huang
03/19/2026
Special inspection requirement — Electric vehicle service equipment requirements
Xiao Huang
01/22/2026
Special inspection requirement — Footing and Foundation
Xiao Huang
01/22/2026
Special inspection requirement — Final
YUNHO LEE
01/22/2026
Special inspection requirement — Structural Stability – Alterations of existing buildings
Xiao Huang
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWStructuralPermit IssuedLXC CONSTRUCTION INC08/04/2026
DOB NOWConstruction FencePermit IssuedNEW LAND CONSTRUCTION NY07/27/2026
1 project · most recent 08/13/2026
General Wiring
FiledStatusContractorScope
08/13/2026Permit IssuedKWONG MING ELECTRIC INCGeneral Wiring
1 project · most recent 08/26/2026
Wood
FiledStatusContractorScope
08/26/2026Permit IssuedLXC CONSTRUCTION INCWood
1 project · most recent 08/26/2026
Fence
FiledStatusContractorScope
08/26/2026Permit IssuedLXC CONSTRUCTION INCFence
▾Special Inspection Requirements (DOB NOW) — 27
DateRequirementInspectorRole
07/09/2026Sprinkler Systems—special
07/09/2026Maintenance information—energy_progress
07/09/2026Fire-Resistant Penetrations and Joints—special
07/09/2026Energy Code Compliance Inspections—progress
07/09/2026HVAC-R and service water heating equipment—energy_progress
07/09/2026HVAC-R and service water heating system controls—energy_progress
07/09/2026HVAC-R and service water piping design and insulation—energy_progress
03/24/2026Structural Wood FrameXiao Huangprogress
03/19/2026Protection of exposed foundation insulationXiao Huangenergy_progress
03/19/2026Concrete - Cast-In-PlaceXiao Huangspecial
03/19/2026Excavations - Sheeting, Shoring, and BracingXiao Huangspecial
03/19/2026Fire-Resistant Penetrations and JointsXiao Huangspecial
03/19/2026Insulation placement and R valuesXiao Huangenergy_progress
03/19/2026Maintenance informationXiao Huangenergy_progress
03/19/2026Permanent certificateXiao Huangenergy_progress
03/19/2026Energy Code Compliance InspectionsXiao Huangprogress
03/19/2026Fire-Resistance Rated ConstructionXiao Huangprogress
03/19/2026Fenestration air leakageXiao Huangenergy_progress
03/19/2026Interior lighting powerXiao Huangenergy_progress
03/19/2026Air barrier - visual inspectionXiao Huangenergy_progress
03/19/2026Fenestration areasXiao Huangenergy_progress
03/19/2026Air barrier — testing Xiao Huangenergy_progress
03/19/2026Fenestration and door U-factor and product ratingsXiao Huangenergy_progress
03/19/2026Electric vehicle service equipment requirementsXiao Huangenergy_progress
01/22/2026Footing and FoundationXiao Huangprogress
Latest 25 of 27.
▾Documents — 26 on file (BIS + DOB NOW)
▸Plans & Drawings2
▸DOB NOWPlans/Sketch2
08/17/2026S01350349-S1Request digital key ↗
08/17/2026S01350349-I1Request digital key ↗
▸Zoning, Tax Lot & Property Records4
▸DOB NOWZD1: DOB Zoning Diagram2
08/17/2026S01350349-I1Open ↗
08/13/2026S01350349-I1Open ↗
▸DOB NOWZoning Exhibit form (1-5)1
08/17/2026S01350349-I1Open ↗
▸DOB NOWHouse Number Verification: TOPO Stamp1
08/13/2026S01350349-I1Open ↗
▸Seals & Professional Certifications12
▸DOB NOWProgress Inspector Seal & Signature8
09/23/2026S01350349-P1Open ↗
09/23/2026S01350349-P1Open ↗
09/23/2026S01350349-P1Open ↗
Showing 3 of 8 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature2
08/17/2026S01350349-S1Open ↗
08/17/2026S01350349-I1Open ↗
▸DOB NOWSpecial Inspector Seal & Signature2
09/23/2026S01350349-P1Open ↗
08/30/2026S01350349-I1Open ↗
▸Trade Schedules & Equipment1
▸DOB NOWDEP: Sewer Certification (Sanitary/Storm)1
08/17/2026S01350349-I1Open ↗
▸Safety & Tenant Protection1
▸DOB NOWParks Department Acknowledgment Letter for Street Trees Plan1
08/17/2026S01350349-I1Open ↗
▸Inspections & Test Reports2
▸DOB NOWGeotechnical Report (BC 1803.6)2
08/17/2026S01350349-I1Open ↗
08/13/2026S01350349-I1Open ↗
▸Other Documents4
▸DOB NOWSite Survey: Initial1
08/13/2026S01350349-I1Open ↗
▸DOB NOWProperty Ownership Certification1
08/17/2026S01350349-I1Open ↗
▸DOB NOWLocal Law 92/94 of 2019 Sustainable Roof Zone1
08/13/2026S01350349-I1Open ↗
▸DOB NOWAdjoining Owners Notification1
08/17/2026S01350349-I1Open ↗