← Back
Four families
150 WILLOW STREET
BROOKLYN · BIN 3001775
💬 Discuss this project
1855Year Built
3.5Stories
C3Building Class
R6Zoning
6,575 sfGross Floor Area
4Units
Rent Stabilized5 Open Violations ▸FDNY Report ↗
Four families · Owner of record: TWO HATTON LLC · 2,525 sf lot · 2.6 FAR built · Flood zone X
Locations of Work
ArchitectureStructuralMechanicalPlumbingFire Protection
Roof53p · 4 filings · 20 docs
Bulkhead1p · 1 filing · 12 docs
Floor 452p · 5 filings · 20 docs
Floor 351p · 4 filings · 20 docs
Floor 244p · 1 filing · 20 docs
Floor 151p · 4 filings · 20 docs
Cellar61p · 4 filings · 20 docs
Basement50p · 2 filings · 20 docs
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
J G CONSTRUCTION SRVCS1103/22/2026
TWO HATTON LLC103/22/2026
SMR CRAFTWORKS INC 1103/22/2026
CRAFT WORKS INC SMR103/22/2026
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
07/06/2023$6.2M—Private party → TWO HATTON LLC$939/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
BAXT INGUI ARCHITECTS704/28/2026
RJD ENGINEERING LLC701/29/2026
D'HUY ENGINEERING, INC.201/21/2026
ASHRAF CORP103/14/2024
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
GAMILL ENGINEERING, PC2803/21/2026
KMA DESIGNS LLC203/21/2026
BAXT INGUI ARCHITECTS PC103/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
SMR CRAFTWORKS INCGeneral Contractor1307/08/2026
J & G CONSTRUCTION SVCSGeneral Contractor1203/21/2026
AQUEDUCT MECHANICAL CORPPlumbing207/08/2026
AQUEDUCT MECHANICAL CORPFire Protection107/08/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
MACIA INSPECTION & TESTIN4021604/28/2026
JSPECS,INC9429107/17/2023
Building Lifecycle
All (201)Filed (17)Permit Issued (16)Signed Off (7)Violation (43)Inspection (8)Objection (80)Special Inspection (30)
08/13/2026
Signed off — Alteration CO
GUT RENOVATION OF EXISTING 5-STORY RESIDENTIAL BUILDING. CHANGE OCCUPANCY FROM 4 FAMILIES TO 1 FAMILY. OBTAIN NEW CERTIFICATE OF OCCUPANCY.
B00901186-I1
05/06/2026
Violation issued (HPD, open)
A
05/05/2026
Signed off — Alteration
MECHANICAL WORK IN ASSOCIATION WITH GUT RENOVATION OF EXISTING 5-STORY RESIDENTIAL BUILDING. INSTALLATION OF VRF HEAT PUMP SYSTEM THROUGHOUT WITH ASSOCIATED DUCTS AND PIPING. INSTALLATION OF NEW ERV VENTILATION SYSTEM.
B00920609-I1
04/28/2026
Filed — Alteration CO
GUT RENOVATION OF EXISTING 5-STORY RESIDENTIAL BUILDING. CHANGE OCCUPANCY FROM 4 FAMILIES TO 1 FAMILY. OBTAIN NEW CERTIFICATE OF OCCUPANCY.
B00901186-P5
04/24/2026
Inspection — Pass-Final CND-Occupancy Inspection
Pass
View inspection ↗
04/13/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
CHUNG CHING JEN
04/13/2026
Special inspection requirement — Mechanical Systems
CHUNG CHING JEN
04/13/2026
Special inspection requirement — Final
CHUNG CHING JEN
04/01/2026
Objection resolved — Addressed
03/16/2026
Signed off — Alteration
STRUCTURAL IN CONJ WITH ALT-CO #B00901186-I1. 1ST FL MODIFICATIONS TO THE RELIEVING WALL, REPLACEMENT OF FRAMING AT THE EXTENSION ROOF, REVISION OF THE 4TH FL STAIR OPENING, REINFORCE OF THE ROOF & NEW BULKHEAD.
B00920614-I1
03/10/2026
Permit issued — Foundation
B00920614-I1-ST
03/10/2026
Permit issued — Structural
B00920614-I1-FO
03/04/2026
Special inspection requirement — Final
CHUNG CHING JEN
03/04/2026
Special inspection requirement — Footing and Foundation
CHUNG CHING JEN
03/04/2026
Special inspection requirement — Structural Steel - Welding
CHUNG CHING JEN
03/04/2026
Special inspection requirement — Masonry
CHUNG CHING JEN
03/04/2026
Special inspection requirement — Structural Steel - Details
CHUNG CHING JEN
03/04/2026
Special inspection requirement — Wood – Seismic Resistance
CHUNG CHING JEN
03/04/2026
Special inspection requirement — Concrete - Cast-In-Place
CHUNG CHING JEN
03/04/2026
Special inspection requirement — Structural Stability – Alterations of existing buildings
CHUNG CHING JEN
03/04/2026
Special inspection requirement — Structural Cold-Formed Steel
CHUNG CHING JEN
03/04/2026
Special inspection requirement — Structural Steel - High Strength Bolting
CHUNG CHING JEN
03/04/2026
Special inspection requirement — Post-installed Anchors
CHUNG CHING JEN
02/25/2026
Objection resolved — Addressed
02/25/2026
Objection resolved — Addressed
02/25/2026
Objection resolved — Addressed
02/25/2026
Objection resolved — Addressed
02/23/2026
Objection resolved — Addressed
02/12/2026
Signed off — Alteration
PLUMBING INSTALLATION WORK IN ASSOCIATION WITH GUT RENOVATION OF EXISTING 5-STORY RESIDENTIAL BUILDING. INSTALLATION OF NEW PLUMBING FIXTURES THROUGHOUT WITH ASSOCIATED PIPING.
B00920602-I1
02/12/2026
Signed off — Alteration
SPRINKLER INSTALLATION WORK IN ASSOCIATION WITH GUT RENOVATION OF EXISTING 5-STORY RESIDENTIAL BUILDING. INSTALLATION OF NEW SPRINKLERS THROUGHOUT WITH ASSOCIATED PIPING AND BACKFLOW PREVENTER.
B00920606-I1
02/12/2026
Objection raised — Mechanical
02/12/2026
Objection raised — Inspections
02/12/2026
Objection raised — Scope
02/12/2026
Objection raised — Cost
02/12/2026
Objection raised — Scope
01/29/2026
Filed — Alteration
MECHANICAL WORK IN ASSOCIATION WITH GUT RENOVATION OF EXISTING 5-STORY RESIDENTIAL BUILDING. INSTALLATION OF VRF HEAT PUMP SYSTEM THROUGHOUT WITH ASSOCIATED DUCTS AND PIPING. INSTALLATION OF NEW ERV VENTILATION SYSTEM.
B00920609-P1
01/29/2026
Objection raised — Cost
01/23/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
CHUNG CHING JEN
01/23/2026
Special inspection requirement — Final
CHUNG CHING JEN
01/23/2026
Special inspection requirement — Mechanical Systems
CHUNG CHING JEN
01/21/2026
Filed — Alteration CO
GUT RENOVATION OF EXISTING 5-STORY RESIDENTIAL BUILDING. CHANGE OCCUPANCY FROM 4 FAMILIES TO 1 FAMILY. OBTAIN NEW CERTIFICATE OF OCCUPANCY.
B00901186-P4
01/21/2026
Filed — Alteration
STRUCTURAL IN CONJ WITH ALT-CO #B00901186-I1. 1ST FL MODIFICATIONS TO THE RELIEVING WALL, REPLACEMENT OF FRAMING AT THE EXTENSION ROOF, REVISION OF THE 4TH FL STAIR OPENING, REINFORCE OF THE ROOF & NEW BULKHEAD.
B00920614-P1
01/21/2026
Special inspection requirement — Fenestration air leakage
CHUNG CHING JEN
01/21/2026
Special inspection requirement — Lighting in dwelling units
CHUNG CHING JEN
01/21/2026
Special inspection requirement — Insulation placement and R values
CHUNG CHING JEN
01/21/2026
Special inspection requirement — Air barrier - visual inspection
CHUNG CHING JEN
01/21/2026
Special inspection requirement — Fenestration and door U-factor and product ratings
CHUNG CHING JEN
01/21/2026
Special inspection requirement — Permanent certificate
CHUNG CHING JEN
01/21/2026
Special inspection requirement — Energy Code Compliance Inspections
CHUNG CHING JEN
01/21/2026
Special inspection requirement — Tenant Protection Plan Compliance
01/21/2026
Special inspection requirement — Fenestration areas
CHUNG CHING JEN
01/21/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
CHUNG CHING JEN
01/21/2026
Special inspection requirement — Structural Stability – Alterations of existing buildings
CHUNG CHING JEN
01/21/2026
Special inspection requirement — Fire-Resistance Rated Construction
CHUNG CHING JEN
11/18/2025
Violation issued (HPD, open)
I
10/30/2025
Permit issued — General Construction
B00901186-I1-GC
09/26/2025
Filed — Alteration CO
GUT RENOVATION OF EXISTING 5-STORY RESIDENTIAL BUILDING. CHANGE OCCUPANCY FROM 4 FAMILIES TO 1 FAMILY. OBTAIN NEW CERTIFICATE OF OCCUPANCY.
B00901186-P3
09/26/2025
Special inspection requirement — Tenant Protection Plan Compliance
09/12/2025
Inspection — Pass-Final PL - Up to 3 Requested Floors
Pass
View inspection ↗
09/08/2025
Filed — Alteration CO
GUT RENOVATION OF EXISTING 5-STORY RESIDENTIAL BUILDING. CHANGE OCCUPANCY FROM 4 FAMILIES TO 1 FAMILY. OBTAIN NEW CERTIFICATE OF OCCUPANCY.
B00901186-P2
Latest 60 of 201 events.
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWFoundationSigned-offTAP METRO ELECTRIC, LLC03/10/2026
DOB NOWStructuralSigned-offTAP METRO ELECTRIC, LLC03/10/2026
DOB NOWGeneral ConstructionPermit IssuedTAP METRO ELECTRIC, LLC10/30/2025
DOB NOWSidewalk ShedSigned-offJ & G CONSTRUCTION SVCS02/28/2025
DOB NOWSupported ScaffoldSigned-offJ & G CONSTRUCTION SVCS02/28/2025
DOB NOWPlumbingSigned-offAQUEDUCT MECHANICAL CORP11/15/2024
DOB NOWGeneral ConstructionPermit IssuedTAP METRO ELECTRIC, LLC09/25/2024
DOB NOWMechanical SystemsSigned-offTAP METRO ELECTRIC, LLC08/14/2024
DOB NOWSprinklersSigned-offAQUEDUCT MECHANICAL CORP07/23/2024
DOB NOWGeneral ConstructionPermit IssuedTAP METRO ELECTRIC, LLC07/12/2024
DOB NOWSupported ScaffoldSigned-offJ & G CONSTRUCTION SVCS03/15/2024
DOB NOWSidewalk ShedSigned-offJ & G CONSTRUCTION SVCS03/15/2024
DOB NOWGeneral ConstructionPermit IssuedTAP METRO ELECTRIC, LLC12/19/2023
DOB NOWPlumbingSigned-offAQUEDUCT MECHANICAL CORP12/07/2023
DOB NOWGeneral ConstructionSigned-offTAP METRO ELECTRIC, LLC11/28/2023
DOB NOWGeneral ConstructionSigned-offTAP METRO ELECTRIC, LLC08/08/2023
1 project · most recent 01/29/2026
Heating and Air Conditioning Systems Ventilation Systems
FiledStatusContractorScopeMake / Model / Capacity
01/29/2026Signed-offSMR CRAFTWORKS INCHeating and Air Conditioning Systems, Ventilation Systems
Heat / Cool
Mitsubishi Electric PEFY-P08NMAU-E4 9,000 BTU · Vrf Indoor ×8
MXZ-SM48NAMHZ2-U1 54,000 BTU · Condensing Unit ×4
PEFY-P12NMAU-E4 13,500 BTU · Vrf Indoor ×4
PVFY-P18NAMU-E1 20,000 BTU · Vrf Indoor ×4
PVFY-P08NAMU-E1 9,000 BTU · Vrf Indoor ×2
PVFY-P12NAMU-E1 13,500 BTU · Vrf Indoor ×2
Ventilation
Zehnder COMFO AIR Q450 203 CFM · Erv ×4
3 projects · most recent 01/12/2026
General Wiring
FiledStatusContractorScope
01/12/2026CompleteSUPER CHARGED ELEC. INC.General Wiring
03/15/2024CompleteRICHARD NEU—
01/05/2024CompleteSUPER CHARGED ELEC. INC.—
▾Field Inspections (DOB CAP) — 8
DateTypeResultReport
04/24/2026Pass-Final CND-Occupancy InspectionPassView ↗
09/12/2025Pass-Final PL - Up to 3 Requested FloorsPassView ↗
08/21/2025Certified Sprinkler-SP-Fixtures-FinishCertifiedView ↗
08/18/2025Certified Sprinkler-SP-Piping Dry/Wet-Hydrostatic TestCertifiedView ↗
12/13/2024Certified Gas-Gas-Piping-RoughingCertifiedView ↗
12/13/2024Certified Storm Drainage-ST-Piping-RoughingCertifiedView ↗
12/13/2024Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
10/02/2024Certified Water and Sanitary-WS-Sanitary Piping-UndergroundCertifiedView ↗
▾Special Inspection Requirements (DOB NOW) — 71
DateRequirementInspectorRole
04/13/2026Mechanical SystemsCHUNG CHING JENspecial
04/13/2026Fire-Resistant Penetrations and JointsCHUNG CHING JENspecial
04/13/2026FinalCHUNG CHING JENprogress
03/04/2026Post-installed AnchorsCHUNG CHING JENspecial
03/04/2026MasonryCHUNG CHING JENspecial
03/04/2026Structural Steel - High Strength BoltingCHUNG CHING JENspecial
03/04/2026Wood – Seismic ResistanceCHUNG CHING JENspecial
03/04/2026FinalCHUNG CHING JENprogress
03/04/2026Structural Cold-Formed SteelCHUNG CHING JENspecial
03/04/2026Concrete - Cast-In-PlaceCHUNG CHING JENspecial
03/04/2026Footing and FoundationCHUNG CHING JENprogress
03/04/2026Structural Steel - DetailsCHUNG CHING JENspecial
03/04/2026Structural Stability – Alterations of existing buildingsCHUNG CHING JENspecial
03/04/2026Structural Steel - WeldingCHUNG CHING JENspecial
01/23/2026Mechanical SystemsCHUNG CHING JENspecial
01/23/2026Fire-Resistant Penetrations and JointsCHUNG CHING JENspecial
01/23/2026FinalCHUNG CHING JENprogress
01/21/2026Fenestration areasCHUNG CHING JENenergy_progress
01/21/2026Permanent certificateCHUNG CHING JENenergy_progress
01/21/2026Insulation placement and R valuesCHUNG CHING JENenergy_progress
01/21/2026Fenestration air leakageCHUNG CHING JENenergy_progress
01/21/2026Fire-Resistance Rated ConstructionCHUNG CHING JENprogress
01/21/2026Tenant Protection Plan Compliance—special
01/21/2026Energy Code Compliance InspectionsCHUNG CHING JENprogress
01/21/2026Lighting in dwelling unitsCHUNG CHING JENenergy_progress
Latest 25 of 71.
▾Documents — 132 on file (BIS + DOB NOW)
▸Plans & Drawings16
▸DOB NOWPlans/Sketch16
08/26/2026B00920606-P2Request digital key ↗
08/26/2026B00920606-I1Request digital key ↗
08/26/2026B00920606-P1Request digital key ↗
Showing 3 of 16 on file for this type
▸Applications & Permits12
▸DOB NOWLPC Approval/Permit12
08/26/2026B00920614-I1Open ↗
08/18/2026B00920609-I1Open ↗
08/17/2026B00901186-P5Open ↗
Showing 3 of 12 on file for this type
▸Zoning, Tax Lot & Property Records7
▸DOB NOWZD1: DOB Zoning Diagram6
08/17/2026B00901186-P5Open ↗
08/13/2026B00901186-P4Open ↗
08/13/2026B00901186-P3Open ↗
Showing 3 of 6 on file for this type
▸DOB NOWHouse Number Verification: TOPO Stamp1
08/15/2026B00901186-I1Open ↗
▸Seals & Professional Certifications42
▸DOB NOWDPL-1: Design Professional Seal & Signature18
08/26/2026B00920606-I1Open ↗
08/26/2026B00920602-I1Open ↗
08/26/2026B00920602-P1Open ↗
Showing 3 of 18 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature13
09/01/2026B00920606-P1Open ↗
08/30/2026B00920606-I1Open ↗
08/27/2026B00901186-P3Open ↗
Showing 3 of 13 on file for this type
▸DOB NOWProgress Inspector Seal & Signature11
08/27/2026B00901186-P3Open ↗
08/27/2026B00901186-P3Open ↗
08/27/2026B00920614-I1Open ↗
Showing 3 of 11 on file for this type
▸Safety & Tenant Protection6
▸DOB NOWStreet Tree Checklist6
08/17/2026B00901186-P5Open ↗
08/17/2026B00901186-P4Open ↗
08/17/2026B00901186-P2Open ↗
Showing 3 of 6 on file for this type
▸Environmental & Asbestos5
▸DOB NOWDEP ACP-20/ACP-21: Asbestos Project Conditional Completion Form/Asbestos Project Completion Form5
08/26/2026B00920602-I1Open ↗
08/15/2026B00901186-I1Open ↗
08/13/2026B00920606-I1Open ↗
Showing 3 of 5 on file for this type
▸Inspections & Test Reports3
▸DOB NOWHydrant Flow Test Letter3
08/26/2026B00920606-P1Open ↗
08/26/2026B00920606-P2Open ↗
08/26/2026B00920606-I1Open ↗
▸Approvals, Objections & Sign-offs1
▸DOB NOWLandmark Approval1
08/13/2026B00912324-I1Open ↗
▸Other Documents40
▸DOB NOWProof of Historic Building12
08/26/2026B00920614-I1Open ↗
08/18/2026B00920609-I1Open ↗
08/17/2026B00901186-P5Open ↗
Showing 3 of 12 on file for this type
▸DOB NOWSite Survey: Initial6
08/17/2026B00901186-P5Open ↗
08/13/2026B00901186-P4Open ↗
08/13/2026B00901186-P2Open ↗
Showing 3 of 6 on file for this type
▸DOB NOWLocal Law 92/94 of 2019 Sustainable Roof Zone6
08/17/2026B00901186-P5Open ↗
08/13/2026B00901186-P4Open ↗
08/13/2026B00901186-P2Open ↗
Showing 3 of 6 on file for this type
▸DOB NOWPlot Diagram6
08/17/2026B00901186-P5Open ↗
08/13/2026B00901186-I1Open ↗
08/13/2026B00901186-P4Open ↗
Showing 3 of 6 on file for this type
▸DOB NOWProperty Ownership Certification6
08/17/2026B00901186-P3Open ↗
08/17/2026B00901186-P5Open ↗
08/17/2026B00901186-P4Open ↗
Showing 3 of 6 on file for this type
▸DOB NOWHydraulic Calculations3
08/26/2026B00920606-P1Open ↗
08/26/2026B00920606-I1Open ↗
08/13/2026B00920606-P2Open ↗
▸DOB NOWFinal Survey1
08/15/2026B00901186-I1Open ↗