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Miscellaneous one family
324 WEST 20 STREET
MANHATTAN · BIN 1013228
💬 Discuss this project
1858Year Built
3Stories
A9Building Class
R7BZoning
1,652 sfGross Floor Area
1Units
1 Open Violation ▸FDNY Report ↗
Miscellaneous one family · 1,495 sf lot · 1.11 FAR built · Flood zone X
Locations of Work
ArchitectureStructuralElectricalMechanicalPlumbing
Permit Issued — active, not yet Signed-off
RoofUnder Construction33p · 2 filings · 20 docs
Floor 3Under Construction21p · 1 filing · 20 docs
Floor 2Under Construction29p · 2 filings · 20 docs
Floor 1Under Construction23p · 1 filing · 20 docs
CellarUnder Construction35p · 2 filings · 20 docs
Sub-BasementUnder Construction21p · 1 filing · 20 docs
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
BEN HERZOG ARCHITECT PC503/17/2026
CELIN MUNOZ CONSULTING ENGINEER, PC303/17/2026
NY BUILDING ASSOCIATES INC201/07/2026
AEIS408/07/2024
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
BROOKLYN SOLARWORKS203/21/2026
ANZALONE ARCHITECTURE2003/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
J. COSTA CONSTRUCTION CORGeneral Contractor1307/08/2026
PROSTAR PLUMBING AND HEATPlumbing407/08/2026
BROOKYLN SOLARWORKS, LLCElectrical103/22/2026
BROOKLYN SOLARWORKS LLCGeneral Contractor104/09/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
BEN HERZOG ARCHITECT, PC1544303/17/2026
CELIN MUNOZ CONSULTING EN1064603/17/2026
NKM ENGINEERING PLLC6244201/07/2026
ARCHITECTURAL ENGINEERING6111408/07/2024
Building Lifecycle
All (98)Filed (14)Permit Issued (15)Signed Off (4)Violation (4)Inspection (7)Objection (24)Special Inspection (30)
07/27/2026
Signed off — Alteration
INTERIOR DEMO OF NON-BEARING PARITIONS AND FINISHES ONLY. NO CHANGE TO USE, EGRESS OR OCCUPANCY. RENOVATION FILED UNDER SEPARATE APPLICATION M00901911-I1.
M00986187-S1
07/27/2026
Signed off — Alteration
INTERIOR DEMO OF NON-BEARING PARITIONS AND FINISHES ONLY. NO CHANGE TO USE, EGRESS OR OCCUPANCY. RENOVATION FILED UNDER SEPARATE APPLICATION M00901911-I1.
M00986187-I1
07/15/2026
Signed off — Alteration
RENOVATE EXISTING 1 FAMILY RESIDENCE. DEMO AND CONSTRUCT WALLS, CABINETRY, AND FINISHES. INSTALL NEW ELEVATOR SHAFT FOR NEW PRIVATE ELEVATOR DEVICE. NO CHANGE TO BULK, USE, EGRESS, OR OCCUPANCY.
M00901911-S4
03/25/2026
Objection resolved — Addressed
03/24/2026
Objection resolved — Addressed
03/24/2026
Objection resolved — Addressed
03/24/2026
Objection resolved — Addressed
03/24/2026
Objection resolved — Addressed
03/18/2026
Objection raised — Cost
03/18/2026
Objection raised — Zoning
03/18/2026
Objection raised — Cost
03/18/2026
Objection raised — Zoning
03/18/2026
Objection raised — Mechanical
03/17/2026
Filed — Alteration
RENOVATE EXISTING 1 FAMILY RESIDENCE. DEMO AND CONSTRUCT WALLS, CABINETRY, AND FINISHES. INSTALL NEW ELEVATOR SHAFT FOR NEW PRIVATE ELEVATOR DEVICE. NO CHANGE TO BULK, USE, EGRESS, OR OCCUPANCY.
M00901911-P6
03/17/2026
Filed — Alteration
RENOVATE EXISTING 1 FAMILY RESIDENCE. DEMO AND CONSTRUCT WALLS, CABINETRY, AND FINISHES. INSTALL NEW ELEVATOR SHAFT FOR NEW PRIVATE ELEVATOR DEVICE. NO CHANGE TO BULK, USE, EGRESS, OR OCCUPANCY.
M00901911-P7
01/12/2026
Signed off — Alteration
INSTALL SOLAR PV SYSTEM ON THE EXISTING ROOFTOP. NO CHANGES TO USE, EGRESS OR OCCUPANCY.
M01187115-I1
01/09/2026
Special inspection requirement — Final
NARESH MAHANGU
01/09/2026
Special inspection requirement — Energy Code Compliance Inspections
NARESH MAHANGU
01/09/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
NARESH MAHANGU
01/09/2026
Special inspection requirement — Air barrier - visual inspection
NARESH MAHANGU
01/07/2026
Filed — Alteration
INSTALL SOLAR PV SYSTEM ON THE EXISTING ROOFTOP. NO CHANGES TO USE, EGRESS OR OCCUPANCY.
M01187115-P1
12/02/2025
Permit issued — General Construction
M00986187-I1-GC
12/02/2025
Permit issued — General Construction
M00901911-I1-GC
12/01/2025
Special inspection requirement — Final
Benjamin Herzog
12/01/2025
Special inspection requirement — Fire-Resistance Rated Construction
Benjamin Herzog
12/01/2025
Special inspection requirement — Lighting in dwelling units
Benjamin Herzog
12/01/2025
Special inspection requirement — Insulation placement and R values
Benjamin Herzog
12/01/2025
Special inspection requirement — Exterior lighting power
Benjamin Herzog
12/01/2025
Special inspection requirement — Air barrier - visual inspection
Benjamin Herzog
12/01/2025
Special inspection requirement — Fenestration air leakage
Benjamin Herzog
12/01/2025
Special inspection requirement — Fire-Resistant Penetrations and Joints
Benjamin Herzog
12/01/2025
Special inspection requirement — Structural Stability – Alterations of existing buildings
Celin Munoz
12/01/2025
Special inspection requirement — Energy Code Compliance Inspections
Benjamin Herzog
12/01/2025
Special inspection requirement — Fenestration areas
Benjamin Herzog
12/01/2025
Special inspection requirement — Fenestration and door U-factor and product ratings
Benjamin Herzog
12/01/2025
Special inspection requirement — Fireplaces
Benjamin Herzog
12/01/2025
Special inspection requirement — Concrete - Cast-In-Place
Celin Munoz
12/01/2025
Special inspection requirement — Masonry
Celin Munoz
12/01/2025
Special inspection requirement — Post-installed Anchors
Celin Munoz
12/01/2025
Special inspection requirement — Structural Stability – Alterations of existing buildings
Celin Munoz
12/01/2025
Special inspection requirement — Structural Steel - Details
Celin Munoz
12/01/2025
Special inspection requirement — Structural Steel - High Strength Bolting
Celin Munoz
12/01/2025
Special inspection requirement — Structural Steel - Welding
Celin Munoz
12/01/2025
Special inspection requirement — Subgrade Inspections
Celin Munoz
12/01/2025
Special inspection requirement — Subsurface Investigations (Borings/Test Pits)
SAMER ABOU-GHAIDA
12/01/2025
Special inspection requirement — Final
Celin Munoz
12/01/2025
Special inspection requirement — Footing and Foundation
Celin Munoz
12/01/2025
Special inspection requirement — Structural Wood Frame
Celin Munoz
10/24/2025
Permit issued — Plumbing
M00901911-S3-PL
10/23/2025
Inspection — Pass-Final PL - Up to 3 Requested Floors
Pass
View inspection ↗
09/15/2025
Inspection — Certified Remove/Cap - work done in accordance with code
Certified
View inspection ↗
06/25/2025
Permit issued — General Construction
M00901911-I1-GC
06/25/2025
Permit issued — General Construction
M00986187-I1-GC
06/20/2025
Inspection — Certified Water and Sanitary-WS-Fixtures-Finish
Certified
View inspection ↗
06/17/2025
Permit issued — Plumbing
M00986187-S1-PL
03/14/2025
Permit issued — Solar
M01187115-I1-SL
03/12/2025
Filed — Alteration
INSTALL SOLAR PV SYSTEM ON THE EXISTING ROOFTOP. NO CHANGES TO USE, EGRESS OR OCCUPANCY.
M01187115-I1
10/04/2024
Inspection — Pass-Final PL - Up to 3 Requested Floors
Pass
View inspection ↗
09/18/2024
Permit issued — Plumbing
M00901911-S3-PL
09/17/2024
Inspection — Fail-Final PL - Up to 3 Requested Floors
Fail
View inspection ↗
Latest 60 of 98 events.
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWGeneral ConstructionSigned-offJ COSTA CONSTRUCTION COR12/02/2025
DOB NOWGeneral ConstructionPermit IssuedJ COSTA CONSTRUCTION COR12/02/2025
DOB NOWPlumbingSigned-offPROSTAR PLUMBING AND HEAT10/24/2025
DOB NOWGeneral ConstructionPermit IssuedJ COSTA CONSTRUCTION COR06/25/2025
DOB NOWGeneral ConstructionSigned-offJ COSTA CONSTRUCTION COR06/25/2025
DOB NOWPlumbingSigned-offPROSTAR PLUMBING AND HEAT06/17/2025
DOB NOWSolarSigned-offBROOKLYN SOLARWORKS LLC03/14/2025
DOB NOWPlumbingSigned-offPROSTAR PLUMBING AND HEAT09/18/2024
DOB NOWStructuralSigned-offJ COSTA CONSTRUCTION COR08/15/2024
DOB NOWMechanical SystemsPermit IssuedJ COSTA CONSTRUCTION COR08/15/2024
DOB NOWGeneral ConstructionPermit IssuedJ COSTA CONSTRUCTION COR07/10/2024
DOB NOWGeneral ConstructionSigned-offJ COSTA CONSTRUCTION COR07/09/2024
DOB NOWGeneral ConstructionPermit IssuedJ COSTA CONSTRUCTION COR02/16/2024
DOB NOWPlumbingSigned-offPROSTAR PLUMBING AND HEAT02/05/2024
DOB NOWGeneral ConstructionSigned-offJ COSTA CONSTRUCTION COR02/02/2024
BISPLISSUEDADVANCED PLUMBING MECH06/13/2000
BIS—ISSUEDOWNER SAME12/08/1998
BISPLISSUEDACCESS PLBG & HTG CORP10/21/1998
BISOTISSUEDGOOD-WILL MECHANICAL CORP.08/10/1998
1 project · most recent 03/17/2026
Air Conditioning Systems Ventilation Systems
FiledStatusContractorScopeMake / Model / Capacity
03/17/2026Permit IssuedJ. COSTA CONSTRUCTION CORAir Conditioning Systems, Ventilation Systems
Cooling
Mitsubishi Electric MXZ-SM36NAM2 36,000 BTU · Condensing Unit ×2
MXZ-SM48NAM2 48,000 BTU · Condensing Unit ×2
Ventilation
Panasonic FV-0511VF1 80 CFM · Exhaust Fan ×10
Greenheck G-090-VG 400 CFM · Kitchen Exhaust ×2
KSQ-7-M1-VG 400 CFM · Makeup Air ×2
SP-A110 103 CFM · Exhaust Fan ×2
2 projects · most recent 03/17/2026
Gas Water/Sanitary Storm
FiledStatusContractorScope
03/17/2026Signed-offPROSTAR PLUMBING AND HEATGas, Storm, Water/Sanitary
01/22/2024Signed-offPROSTAR PLUMBING AND HEATGas, Water/Sanitary
2 projects · most recent 07/10/2025
General Wiring
FiledStatusContractorScope
07/10/2025CompleteBROOKYLN SOLARWORKS, LLC—
09/17/2024Permit IssuedJSP ELECTL CNTNG CORPGeneral Wiring
1 project · most recent 03/17/2026
Steel Concrete Masonry Wood
FiledStatusContractorScope
03/17/2026Permit IssuedJ. COSTA CONSTRUCTION CORSteel, Concrete, Masonry, Wood
▾Field Inspections (DOB CAP) — 7
DateTypeResultReport
10/23/2025Pass-Final PL - Up to 3 Requested FloorsPassView ↗
09/15/2025Certified Remove/Cap - work done in accordance with codeCertifiedView ↗
06/20/2025Certified Water and Sanitary-WS-Fixtures-FinishCertifiedView ↗
10/04/2024Pass-Final PL - Up to 3 Requested FloorsPassView ↗
09/17/2024Fail-Final PL - Up to 3 Requested FloorsFailView ↗
09/12/2024Certified Remove/Cap - work done in accordance with codeCertifiedView ↗
08/23/2024Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
▾Special Inspection Requirements (DOB NOW) — 59
DateRequirementInspectorRole
01/09/2026FinalNARESH MAHANGUprogress
01/09/2026Energy Code Compliance InspectionsNARESH MAHANGUprogress
01/09/2026Fire-Resistant Penetrations and JointsNARESH MAHANGUspecial
01/09/2026Air barrier - visual inspectionNARESH MAHANGUenergy_progress
12/01/2025FinalBenjamin Herzogprogress
12/01/2025Fire-Resistance Rated ConstructionBenjamin Herzogprogress
12/01/2025Lighting in dwelling unitsBenjamin Herzogenergy_progress
12/01/2025Insulation placement and R valuesBenjamin Herzogenergy_progress
12/01/2025Exterior lighting powerBenjamin Herzogenergy_progress
12/01/2025Air barrier - visual inspectionBenjamin Herzogenergy_progress
12/01/2025Fenestration air leakageBenjamin Herzogenergy_progress
12/01/2025Fire-Resistant Penetrations and JointsBenjamin Herzogspecial
12/01/2025Structural Stability – Alterations of existing buildingsCelin Munozspecial
12/01/2025Energy Code Compliance InspectionsBenjamin Herzogprogress
12/01/2025Fenestration areasBenjamin Herzogenergy_progress
12/01/2025Fenestration and door U-factor and product ratingsBenjamin Herzogenergy_progress
12/01/2025FireplacesBenjamin Herzogenergy_progress
12/01/2025Concrete - Cast-In-PlaceCelin Munozspecial
12/01/2025MasonryCelin Munozspecial
12/01/2025Post-installed AnchorsCelin Munozspecial
12/01/2025Structural Stability – Alterations of existing buildingsCelin Munozspecial
12/01/2025Structural Steel - DetailsCelin Munozspecial
12/01/2025Structural Steel - High Strength BoltingCelin Munozspecial
12/01/2025Structural Steel - WeldingCelin Munozspecial
12/01/2025Subgrade InspectionsCelin Munozspecial
Latest 25 of 59.
▾Documents — 97 on file (BIS + DOB NOW)
▸Plans & Drawings14
▸DOB NOWPlans/Sketch14
08/28/2026M00986187-I1Request digital key ↗
08/28/2026M00986187-S1Request digital key ↗
08/24/2026M01187115-I1Request digital key ↗
Showing 3 of 14 on file for this type
▸Applications & Permits14
▸DOB NOWLPC Approval/Permit14
08/18/2026M00901911-P2Open ↗
08/18/2026M00901911-S2Open ↗
08/18/2026M00901911-S4Open ↗
Showing 3 of 14 on file for this type
▸Seals & Professional Certifications55
▸DOB NOWSpecial Inspector Seal & Signature24
09/28/2026M00901911-P4Open ↗
09/02/2026M00901911-P2Open ↗
09/02/2026M00901911-P2Open ↗
Showing 3 of 24 on file for this type
▸DOB NOWProgress Inspector Seal & Signature17
09/28/2026M00901911-P4Open ↗
09/28/2026M00901911-P4Open ↗
09/02/2026M00901911-P2Open ↗
Showing 3 of 17 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature14
08/24/2026M01187115-P1Open ↗
08/24/2026M01187115-I1Open ↗
08/18/2026M00901911-P2Open ↗
Showing 3 of 14 on file for this type
▸Environmental & Asbestos8
▸DOB NOWDEP ACP-5: Asbestos Assessment Report4
08/24/2026M01187115-P1Open ↗
08/24/2026M01187115-I1Open ↗
08/13/2026M00986187-I1Open ↗
Showing 3 of 4 on file for this type
▸DOB NOWDEP ACP-20/ACP-21: Asbestos Project Conditional Completion Form/Asbestos Project Completion Form4
08/13/2026M00901911-I1Open ↗
08/13/2026M00901911-S2Open ↗
08/13/2026M00901911-S3Open ↗
Showing 3 of 4 on file for this type
▸Inspections & Test Reports4
▸DOB NOWSOIL REPORT3
08/18/2026M00901911-P2Open ↗
08/18/2026M00901911-S4Open ↗
08/13/2026M00901911-P7Open ↗
▸DOB NOWTR4 Test Report and Plot Diagram1
08/13/2026M00901911-S4Open ↗
▸Approvals, Objections & Sign-offs1
▸DOB NOWUtility Company Final Acceptance Letter1
08/13/2026M01187115-I1Open ↗
▸Other Documents1
▸DOB NOWAdjoining Owners Notification1
08/13/2026M00901911-S4Open ↗