← Back
Two stories - detached, small or mid-size
423 99 STREET
BROOKLYN · BIN 3430126
💬 Discuss this project
2025Year Built
—Stories
A1Building Class
R4BZoning
4,490 sfGross Floor Area
1Units
2 Open Violations ▸FDNY Report ↗
Two stories - detached, small or mid-size · Owner of record: 423 99 STREET LLC · 5,000 sf lot · 0.9 FAR built · Flood zone X
Locations of Work
ArchitectureStructuralMechanicalPlumbingCivil
Permit Issued — active, not yet Signed-off
RoofUnder Construction37p · 1 filing · 20 docs
Floor 2Under Construction36p · 1 filing · 20 docs
Floor 1Under Construction38p · 2 filings · 20 docs
CellarUnder Construction38p · 2 filings · 20 docs
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
ALPHA SCAFFOLDING INC503/22/2026
360 GENERAL CONTRACTING I203/22/2026
L AND L CONSTRUCTION DEVE303/22/2026
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
11/14/2023$1.4M—— → —— not available
04/19/2022$990K—Private party → Private party— not available
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
NYX ENGINEERING, PLLC912/18/2025
AARON MCDONALD ARCHITECT111/05/2025
ALWAYS FAST SERVICES CORP110/02/2025
JAY ZHU ENGINEERING DESIGN PC107/14/2025
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
NYX ENGINEERING, PLLC203/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
L&L CONSTRUCTION DEVELOPGeneral Contractor604/09/2026
360 GENERAL CONTRACTING IGeneral Contractor507/08/2026
ALPHA SCAFFOLDING INCGeneral Contractor303/21/2026
W.R. PLBG AND HTG CORPPlumbing207/08/2026
RICHARD NEUElectrical103/22/2026
LL CUSTOM HOMES LLCGeneral Contractor107/08/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
NKM ENGINEERING PLLC6244812/18/2025
AARON MCDONALD ARCHITECT5118111/05/2025
Building Lifecycle
All (71)Filed (11)Permit Issued (13)Signed Off (2)Violation (7)Objection (8)Special Inspection (30)
07/18/2026
Violation issued (ECB, open)
Unknown
07/18/2026
Violation issued (ECB, open)
Construction
06/16/2026
Permit issued — Construction Fence
B00970556-I1-FN
06/16/2026
Permit issued — Mechanical Systems
B00999775-I1-GC-CX
04/30/2026
Permit issued — Plumbing
B00999775-S5-PL
04/07/2026
Signed off — Alteration
INSTALLATION OF TEMPORARY HEAVY DUTY SIDEWALK SHED AS PER PLANS. NO CHANGE IN USE, EGRESS OR OCCUPANCY. SIDEWALK SHED SHALL COMPLY WITH CHAPTER #33 OF 2022 THE NYC BUILDING CODE. LIVE LOAD 300PSF.
B01294341-I1
01/15/2026
Violation issued (ECB, closed)
Unknown
01/07/2026
Special inspection requirement — Permanent certificate
NARESH MAHANGU
01/07/2026
Special inspection requirement — HVAC-R and service water heating equipment
NARESH MAHANGU
01/07/2026
Special inspection requirement — Maintenance information
NARESH MAHANGU
01/07/2026
Special inspection requirement — Interior lighting power
NARESH MAHANGU
01/07/2026
Special inspection requirement — Fenestration and door U-factor and product ratings
NARESH MAHANGU
01/07/2026
Special inspection requirement — Ventilation and air distribution system
NARESH MAHANGU
01/07/2026
Special inspection requirement — HVAC-R and service water heating system controls
NARESH MAHANGU
01/07/2026
Special inspection requirement — Insulation placement and R values
NARESH MAHANGU
01/07/2026
Special inspection requirement — Fenestration air leakage
NARESH MAHANGU
01/07/2026
Special inspection requirement — Air barrier — testing
NARESH MAHANGU
01/07/2026
Special inspection requirement — Air barrier - visual inspection
NARESH MAHANGU
01/07/2026
Special inspection requirement — Electric vehicle service equipment requirements
NARESH MAHANGU
01/07/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
NARESH MAHANGU
01/07/2026
Special inspection requirement — Mechanical Systems
NARESH MAHANGU
01/07/2026
Special inspection requirement — Masonry
NARESH MAHANGU
01/07/2026
Special inspection requirement — Final
YUNHO LEE
01/07/2026
Special inspection requirement — Fire-Resistance Rated Construction
NARESH MAHANGU
01/07/2026
Special inspection requirement — Energy Code Compliance Inspections
NARESH MAHANGU
01/07/2026
Special inspection requirement — HVAC-R and service water piping design and insulation
NARESH MAHANGU
01/07/2026
Special inspection requirement — Fenestration areas
NARESH MAHANGU
12/18/2025
Filed — New Building
PROPOSE A DETACHED ONE-FAMILY DWELLING WITH IN-HOUSE GARAGE.
B00999775-P4
12/12/2025
Special inspection requirement — Electric vehicle service equipment requirements
NARESH MAHANGU
12/12/2025
Special inspection requirement — Masonry
NARESH MAHANGU
12/12/2025
Special inspection requirement — Mechanical Systems
NARESH MAHANGU
12/12/2025
Special inspection requirement — Energy Code Compliance Inspections
NARESH MAHANGU
12/12/2025
Special inspection requirement — Final
YUNHO LEE
12/12/2025
Special inspection requirement — Fire-Resistance Rated Construction
NARESH MAHANGU
12/12/2025
Special inspection requirement — Permanent certificate
NARESH MAHANGU
12/12/2025
Special inspection requirement — HVAC-R and service water heating equipment
NARESH MAHANGU
12/12/2025
Special inspection requirement — Air barrier - visual inspection
NARESH MAHANGU
12/12/2025
Special inspection requirement — Fenestration areas
NARESH MAHANGU
11/17/2025
Permit issued — General Construction
B00999775-I1-GC-CX
11/12/2025
Signed off — New Building
PROPOSE A DETACHED ONE-FAMILY DWELLING WITH IN-HOUSE GARAGE.
B00999775-S6
11/07/2025
Permit issued — Plumbing
B01313506-I1-PL
11/05/2025
Filed — Alteration
INSTALL GAS PLUMBING FIXTURES IN EXISTING 2 STORY BUILDING, PLUMBING, WORK AS PER PLAN, NO CHANGE ON EGRESS, USE, OR OCCUPANCY.
B01313506-I1
10/02/2025
Filed — Alteration
INSTALLATION OF TEMPORARY HEAVY DUTY SIDEWALK SHED AS PER PLANS. NO CHANGE IN USE, EGRESS OR OCCUPANCY. SIDEWALK SHED SHALL COMPLY WITH CHAPTER #33 OF 2022 THE NYC BUILDING CODE. LIVE LOAD 300PSF.
B01294341-I1
10/02/2025
Permit issued — Sidewalk Shed
B01294341-I1-SH
07/14/2025
Filed — New Building
PROPOSE A DETACHED ONE-FAMILY DWELLING WITH IN-HOUSE GARAGE.
B00999775-S5
06/18/2025
Permit issued — Construction Fence
B00970556-I1-FN
04/22/2025
Violation issued (ECB, closed)
Construction
04/22/2025
Violation issued (ECB, closed)
Construction
04/20/2025
Violation issued (ECB, closed)
Construction
04/08/2025
Permit issued — General Construction
B00999775-S4-GC
04/08/2025
Permit issued — Foundation
B00999775-S4-ST
04/08/2025
Permit issued — Earth Work
B00999775-S4-FO-EA
03/26/2025
Filed — New Building
PROPOSE A DETACHED ONE-FAMILY DWELLING WITH IN-HOUSE GARAGE.
B00999775-P2
03/26/2025
Filed — New Building
PROPOSE A DETACHED ONE-FAMILY DWELLING WITH IN-HOUSE GARAGE.
B00999775-P1
03/26/2025
Permit issued — Support of Excavation
B00999775-S6-SE
01/08/2025
Violation issued (ECB, closed)
Construction
12/23/2024
Permit issued — Construction Fence
B00970556-I1-FN
12/09/2024
Objection resolved — Addressed
11/12/2024
Objection resolved — Addressed
11/07/2024
Objection resolved — Addressed
Latest 60 of 71 events.
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWConstruction FencePermit Issued360 GENERAL CONTRACTING I06/16/2026
DOB NOWMechanical SystemsPermit Issued360 GENERAL CONTRACTING I06/16/2026
DOB NOWPlumbingPermit IssuedW.R. PLBG AND HTG CORP04/30/2026
DOB NOWGeneral ConstructionPermit Issued360 GENERAL CONTRACTING I11/17/2025
DOB NOWPlumbingPermit IssuedW.R. PLBG AND HTG CORP11/07/2025
DOB NOWSidewalk ShedSigned-offALPHA SCAFFOLDING INC10/02/2025
DOB NOWConstruction FencePermit Issued360 GENERAL CONTRACTING I06/18/2025
DOB NOWGeneral ConstructionPermit IssuedL&L CONSTRUCTION DEVELOP04/08/2025
DOB NOWFoundationPermit IssuedL&L CONSTRUCTION DEVELOP04/08/2025
DOB NOWEarth WorkPermit IssuedL&L CONSTRUCTION DEVELOP04/08/2025
DOB NOWSupport of ExcavationSigned-offL&L CONSTRUCTION DEVELOP03/26/2025
DOB NOWConstruction FencePermit Issued360 GENERAL CONTRACTING I12/23/2024
DOB NOWConstruction FencePermit IssuedLL CUSTOM HOMES LLC12/22/2023
1 project · most recent 12/18/2025
Ventilation Systems
FiledStatusContractorScopeMake / Model / Capacity
12/18/2025Permit Issued360 GENERAL CONTRACTING IVentilation Systems
Ventilation
Fotile ×4
2 projects · most recent 12/18/2025
Storm Water/Sanitary Gas
FiledStatusContractorScope
12/18/2025Permit IssuedW.R. PLBG AND HTG CORPStorm, Water/Sanitary
11/05/2025Permit IssuedW.R. PLBG AND HTG CORPGas
3 projects · most recent 10/03/2025
General Wiring
FiledStatusContractorScope
10/03/2025CompleteRICHARD NEU—
08/19/2025Permit IssuedY ELECTRIC INCGeneral Wiring
08/19/2025Permit IssuedY ELECTRIC INC—
1 project · most recent 12/18/2025
Steel
FiledStatusContractorScope
12/18/2025Permit Issued360 GENERAL CONTRACTING ISteel
1 project · most recent 12/12/2023
Fence
FiledStatusContractorScope
12/12/2023Permit Issued360 GENERAL CONTRACTING IFence
1 project · most recent 12/18/2025
Earthwork
FiledStatusContractorScope
12/18/2025Permit Issued360 GENERAL CONTRACTING IEarthwork
▾Special Inspection Requirements (DOB NOW) — 52
DateRequirementInspectorRole
01/07/2026Permanent certificateNARESH MAHANGUenergy_progress
01/07/2026HVAC-R and service water heating equipmentNARESH MAHANGUenergy_progress
01/07/2026Maintenance informationNARESH MAHANGUenergy_progress
01/07/2026Interior lighting powerNARESH MAHANGUenergy_progress
01/07/2026Fenestration and door U-factor and product ratingsNARESH MAHANGUenergy_progress
01/07/2026Ventilation and air distribution systemNARESH MAHANGUenergy_progress
01/07/2026HVAC-R and service water heating system controlsNARESH MAHANGUenergy_progress
01/07/2026Insulation placement and R valuesNARESH MAHANGUenergy_progress
01/07/2026Fenestration air leakageNARESH MAHANGUenergy_progress
01/07/2026Air barrier — testing NARESH MAHANGUenergy_progress
01/07/2026Air barrier - visual inspectionNARESH MAHANGUenergy_progress
01/07/2026Electric vehicle service equipment requirementsNARESH MAHANGUenergy_progress
01/07/2026Fire-Resistant Penetrations and JointsNARESH MAHANGUspecial
01/07/2026Mechanical SystemsNARESH MAHANGUspecial
01/07/2026MasonryNARESH MAHANGUspecial
01/07/2026FinalYUNHO LEEprogress
01/07/2026Fire-Resistance Rated ConstructionNARESH MAHANGUprogress
01/07/2026Energy Code Compliance InspectionsNARESH MAHANGUprogress
01/07/2026HVAC-R and service water piping design and insulationNARESH MAHANGUenergy_progress
01/07/2026Fenestration areasNARESH MAHANGUenergy_progress
12/12/2025Electric vehicle service equipment requirementsNARESH MAHANGUenergy_progress
12/12/2025MasonryNARESH MAHANGUspecial
12/12/2025Mechanical SystemsNARESH MAHANGUspecial
12/12/2025Energy Code Compliance InspectionsNARESH MAHANGUprogress
12/12/2025FinalYUNHO LEEprogress
Latest 25 of 52.
▾Documents — 91 on file (BIS + DOB NOW)
▸Plans & Drawings13
▸DOB NOWPlans/Sketch13
08/26/2026B00970556-I1Request digital key ↗
08/23/2026B00999775-I1Request digital key ↗
08/23/2026B00999775-P1Request digital key ↗
Showing 3 of 13 on file for this type
▸Applications & Permits1
▸BISBPP-5 - Authorization to the Department of Transportation1
10/31/2024340913845Open ↗
▸Zoning, Tax Lot & Property Records8
▸DOB NOWZD1: DOB Zoning Diagram4
08/13/2026B00999775-P5Open ↗
08/13/2026B00999775-I1Open ↗
08/13/2026B00999775-P3Open ↗
Showing 3 of 4 on file for this type
▸DOB NOWZoning Exhibit form (1-5)4
08/13/2026B00999775-P5Open ↗
08/13/2026B00999775-P4Open ↗
08/13/2026B00999775-P3Open ↗
Showing 3 of 4 on file for this type
▸Seals & Professional Certifications31
▸DOB NOWDPL-1: Design Professional Seal & Signature13
08/23/2026B00999775-S6Open ↗
08/23/2026B00999775-I1Open ↗
08/23/2026B00999775-S1Open ↗
Showing 3 of 13 on file for this type
▸DOB NOWProgress Inspector Seal & Signature10
09/01/2026B00999775-P4Open ↗
09/01/2026B00999775-P4Open ↗
09/01/2026B00999775-P4Open ↗
Showing 3 of 10 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature6
09/01/2026B00999775-P4Open ↗
08/30/2026B00999775-P1Open ↗
08/29/2026B00999775-I1Open ↗
Showing 3 of 6 on file for this type
▸BISAPPLICANT OWNER SIGNATURE1
10/31/2024340913845Open ↗
▸BISTECHNICAL REPORT STATEMENT OF RESPONSIBILITY1
10/31/2024340913845Open ↗
▸Trade Schedules & Equipment2
▸DOB NOWDEP: Sewer Certification (Sanitary/Storm)2
08/13/2026B00999775-P2Open ↗
08/13/2026B00999775-S4Open ↗
▸Safety & Tenant Protection11
▸DOB NOWStreet Tree Checklist6
08/23/2026B00999775-I1Open ↗
08/23/2026B00999775-P4Open ↗
08/23/2026B00999775-P2Open ↗
Showing 3 of 6 on file for this type
▸DOB NOWParks Department Acknowledgment Letter for Street Trees Plan2
08/13/2026B00999775-S4Open ↗
08/13/2026B00999775-I1Open ↗
▸BISSTREET TREES: RECEIPT OF STREET TREES SITE PLAN1
11/08/2024340913845Open ↗
▸BISBPP: STREET TREES SITE PLAN1
10/31/2024340913845Open ↗
▸BISSTREET TREE CHECKLIST1
11/08/2024340913845Open ↗
▸Inspections & Test Reports2
▸DOB NOWGeotechnical Report (BC 1803.6)2
08/13/2026B00999775-S6Open ↗
08/13/2026B00999775-S4Open ↗
▸Approvals, Objections & Sign-offs1
▸BISBPP-8 - Request Items for Builders Pavement Plan Signoff1
11/01/2024340913845Open ↗
▸Filing & Intake Forms3
▸BISEFILING JOB APPLICATION COVER SHEET1
11/01/2024340913845Open ↗
▸BISADDITIONAL INFORMATION1
11/08/2024340913845Open ↗
▸BISBPP: CHECKLIST IN LIEU OF PLANS-ALT31
11/08/2024340913845Open ↗
▸Other Documents19
▸DOB NOWSite Survey: Initial6
08/13/2026B00999775-I1Open ↗
08/13/2026B00999775-S4Open ↗
08/13/2026B00999775-P3Open ↗
Showing 3 of 6 on file for this type
▸DOB NOWLocal Law 92/94 of 2019 Sustainable Roof Zone6
08/13/2026B00999775-P3Open ↗
08/13/2026B00999775-P4Open ↗
08/13/2026B00999775-S4Open ↗
Showing 3 of 6 on file for this type
▸DOB NOWProperty Ownership Certification4
08/23/2026B00999775-P5Open ↗
08/23/2026B00999775-I1Open ↗
08/23/2026B00999775-P3Open ↗
Showing 3 of 4 on file for this type
▸DOB NOWAdjoining Owners Notification2
08/13/2026B00999775-S4Open ↗
08/13/2026B00999775-S6Open ↗
▸BISBPP: PHOTOS-SIGNED/SEALED BY APPLICANT1
11/08/2024340913845Open ↗