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Two family frame
639 LEONARD STREET
BROOKLYN · BIN 3065632
💬 Discuss this project
1930Year Built
2Stories
B2Building Class
R6BZoning
3,459 sfGross Floor Area
2Units
0 Open ViolationsFDNY Report ↗
Two family frame · 2,500 sf lot · 1.38 FAR built · Flood zone X
Locations of Work
ArchitectureStructuralMechanicalPlumbingFire Protection
Permit Issued — active, not yet Signed-off
Roof4p · 2 filings · 20 docs
Floor 2Under Construction23p · 3 filings · 20 docs
Floor 1Under Construction21p · 1 filing · 20 docs
CellarUnder Construction19p · 1 filing · 20 docs
BasementUnder Construction27p · 4 filings · 20 docs
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
08/17/2022$2.2M—Private party → Private party$643/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
MANIFOLD ARCHITECTURE STUDIO PLLC512/22/2025
NY BUILDING ASSOCIATES INC210/29/2024
BLUE SKY DESIGN, INC.109/25/2023
JOSEPH K. BLUM CO. LLP104/11/2023
FLORINELA MURESAN103/15/2023
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
K M DOB CONSULTING1603/21/2026
BROOKLYN SOLARWORKS203/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
J. COSTA CONSTRUCTION CORGeneral Contractor1007/08/2026
MILL BROOK FIRE PROTECTIONFire Protection207/08/2026
BROOKLYN SOLARWORKS LLCGeneral Contractor203/21/2026
BROOKYLN SOLARWORKS, LLCElectrical103/22/2026
PROSTAR PLUMBING AND HEATPlumbing107/08/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
CHONG ENGINEERING P.C.7411512/22/2025
NKM ENGINEERING PLLC6244210/29/2024
BLUE SKY DESIGN, INC.1908109/25/2023
JOSEPH K. BLUM CO. LLP1741104/11/2023
MWB ENGINEERING7942203/15/2023
Building Lifecycle
All (107)Filed (10)Permit Issued (13)Signed Off (6)Violation (1)Inspection (11)Objection (36)Special Inspection (30)
06/09/2026
Inspection — Certified Remove/Cap - work done in accordance with code
Certified
View inspection ↗
06/08/2026
Inspection — Certified Sprinkler-SP-Fixtures-Finish
Certified
View inspection ↗
06/04/2026
Inspection — Certified Sprinkler-SP-Piping Dry/Wet-Hydrostatic Test
Certified
View inspection ↗
02/25/2026
Signed off — Alteration CO
CONVERSION OF EXISTING TWO FAMILIES WITH A DOCTOR'S OFFICE TO TWO FAMILIES ONLY. THE WORKSCOPE WILL BE INCLUDED PARTITIONS, FLOORINGS, CEILING, WINDOWS, AND REPLACEMENT OF ROOFING. THIS APPLICATION IS TO OBTAIN A NEW CERTIFICATE OF OCCUPANCY.
B00831320-I1
02/17/2026
Special inspection requirement — Fenestration areas
Kit von Dalwig
02/17/2026
Special inspection requirement — Fire-Resistance Rated Construction
Kit von Dalwig
02/17/2026
Special inspection requirement — Insulation placement and R values
Kit von Dalwig
02/17/2026
Special inspection requirement — Air barrier — testing
Kit von Dalwig
02/17/2026
Special inspection requirement — Permanent certificate
Kit von Dalwig
02/17/2026
Special inspection requirement — Energy Code Compliance Inspections
Kit von Dalwig
02/17/2026
Special inspection requirement — Fenestration air leakage
Kit von Dalwig
02/17/2026
Special inspection requirement — Fenestration and door U-factor and product ratings
Kit von Dalwig
02/17/2026
Special inspection requirement — Maintenance information
Kit von Dalwig
02/17/2026
Special inspection requirement — Metering
Kit von Dalwig
02/17/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
Tae Chong
02/17/2026
Special inspection requirement — Interior lighting power
Kit von Dalwig
02/17/2026
Special inspection requirement — Air barrier - visual inspection
Kit von Dalwig
02/03/2026
Permit issued — General Construction
B00831320-I1-GC
12/22/2025
Filed — Alteration CO
CONVERSION OF EXISTING TWO FAMILIES WITH A DOCTOR'S OFFICE TO TWO FAMILIES ONLY. THE WORKSCOPE WILL BE INCLUDED PARTITIONS, FLOORINGS, CEILING, WINDOWS, AND REPLACEMENT OF ROOFING. THIS APPLICATION IS TO OBTAIN A NEW CERTIFICATE OF OCCUPANCY.
B00831320-P2
12/10/2025
Special inspection requirement — Fenestration and door U-factor and product ratings
Kit von Dalwig
12/10/2025
Special inspection requirement — Fire-Resistance Rated Construction
Kit von Dalwig
12/10/2025
Special inspection requirement — Fenestration air leakage
Kit von Dalwig
12/10/2025
Special inspection requirement — Air barrier - visual inspection
Kit von Dalwig
12/10/2025
Special inspection requirement — Energy Code Compliance Inspections
Kit von Dalwig
12/10/2025
Special inspection requirement — Metering
Kit von Dalwig
12/10/2025
Special inspection requirement — Insulation placement and R values
Kit von Dalwig
12/10/2025
Special inspection requirement — Maintenance information
Kit von Dalwig
12/10/2025
Special inspection requirement — Air barrier — testing
Kit von Dalwig
12/10/2025
Special inspection requirement — Interior lighting power
Kit von Dalwig
12/10/2025
Special inspection requirement — Fire-Resistant Penetrations and Joints
Tae Chong
12/10/2025
Special inspection requirement — Fenestration areas
Kit von Dalwig
12/10/2025
Special inspection requirement — Permanent certificate
Kit von Dalwig
12/02/2025
Inspection — Pass-Final CND-Occupancy Inspection
Pass
View inspection ↗
10/14/2025
Signed off — Alteration
INSTALLATION OF AIR CONDITIONING UNITS AND VENTILATORS WITH DUCTWORK.
B00833569-I1
10/07/2025
Signed off — Alteration
INSTALLATION OF PLUMBING FIXTURES AND SPRINKLER SYSTEMS.
B00833582-I1
08/25/2025
Inspection — Pass-Final CND-Occupancy Inspection
Pass
View inspection ↗
07/30/2025
Signed off — Alteration
INSTALLATION OF REAR ROOF TERRACE @2ND FL., REMOVAL AND RECONFIGURATION OF ALL INTERIOR WALLS, NEW OVERSIZED WINDOW OPENINGS, NEW STEEL DECK, SUNKEN PATIO, AND REINFORCEMENT OF EXISTING ATTIC FRAMING.
B00834262-I1
06/20/2025
Inspection — Certified Sprinkler-SP-Fixtures-Finish
Certified
View inspection ↗
06/16/2025
Inspection — Certified Sprinkler-SP-Piping Dry/Wet-Hydrostatic Test
Certified
View inspection ↗
06/11/2025
Permit issued — Plumbing
B00833582-I1-EW-SP
03/19/2025
Signed off — Alteration
INSTALLATION OF SOLAR PV SYSTEM. NO CHANGE TO USE, EGRESS, OR OCCUPANCY.
B01074591-I1
12/04/2024
Signed off — Alteration
INSTALLATION OF TEMPORARY CONSTRUCTION WOOD FENCE PER PLAN SUBMITTED DURING ALTERATION WORK. THE WORK SHALL COMPLY WITH THE 2014 BUILDING CODE CHAPTER 33.
B00837665-I1
10/29/2024
Filed — Alteration
INSTALLATION OF SOLAR PV SYSTEM. NO CHANGE TO USE, EGRESS, OR OCCUPANCY.
B01074591-P1
10/29/2024
Special inspection requirement — Fire-Resistant Penetrations and Joints
NARESH MAHANGU
10/29/2024
Special inspection requirement — Fire-Resistant Penetrations and Joints
NARESH MAHANGU
10/29/2024
Special inspection requirement — Structural Stability – Alterations of existing buildings
NARESH MAHANGU
10/29/2024
Special inspection requirement — Energy Code Compliance Inspections
NARESH MAHANGU
07/15/2024
Filed — Alteration
INSTALLATION OF SOLAR PV SYSTEM. NO CHANGE TO USE, EGRESS, OR OCCUPANCY.
B01074591-I1
07/15/2024
Permit issued — Solar
B01074591-I1-SL
07/10/2024
Permit issued — Structural
B00834262-I1-ST
07/10/2024
Permit issued — Construction Fence
B00837665-I1-FN
07/10/2024
Permit issued — Mechanical Systems
B00833569-I1-MS
07/09/2024
Permit issued — General Construction
B00831320-I1-GC
04/26/2024
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Roughing
Certified
View inspection ↗
04/19/2024
Inspection — Certified Storm Drainage-ST-Piping-Underground
Certified
View inspection ↗
04/19/2024
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Roughing
Certified
View inspection ↗
04/19/2024
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Underground
Certified
View inspection ↗
03/29/2024
Objection resolved — Addressed
03/18/2024
Objection raised — Other
03/15/2024
Filed — Alteration CO
CONVERSION OF EXISTING TWO FAMILIES WITH A DOCTOR'S OFFICE TO TWO FAMILIES ONLY. THE WORKSCOPE WILL BE INCLUDED PARTITIONS, FLOORINGS, CEILING, WINDOWS, AND REPLACEMENT OF ROOFING. THIS APPLICATION IS TO OBTAIN A NEW CERTIFICATE OF OCCUPANCY.
B00831320-P1
Latest 60 of 107 events.
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWGeneral ConstructionPermit IssuedJ COSTA CONSTRUCTION COR02/03/2026
DOB NOWPlumbingSigned-offLEGUCI PIPING&HEATING LLC06/11/2025
DOB NOWSolarSigned-offBROOKLYN SOLARWORKS LLC07/15/2024
DOB NOWStructuralSigned-offJ COSTA CONSTRUCTION COR07/10/2024
DOB NOWConstruction FenceSigned-offJ COSTA CONSTRUCTION COR07/10/2024
DOB NOWMechanical SystemsSigned-offJ COSTA CONSTRUCTION COR07/10/2024
DOB NOWGeneral ConstructionPermit IssuedJ COSTA CONSTRUCTION COR07/09/2024
DOB NOWPlumbingSigned-offPROSTAR PLUMBING AND HEAT11/17/2023
DOB NOWPlumbingSigned-offLEGUCI PIPING&HEATING LLC11/14/2023
DOB NOWGeneral ConstructionPermit IssuedJ COSTA CONSTRUCTION COR07/28/2023
DOB NOWStructuralSigned-offJ COSTA CONSTRUCTION COR07/14/2023
DOB NOWMechanical SystemsSigned-offJ COSTA CONSTRUCTION COR07/12/2023
DOB NOWConstruction FenceSigned-offJ COSTA CONSTRUCTION COR07/11/2023
3 projects · most recent 09/25/2024
General Wiring
FiledStatusContractorScope
09/25/2024CompleteBROOKYLN SOLARWORKS, LLC—
05/23/2024CompleteSURE ELEC'L CONTR'G CORP.General Wiring
02/23/2024CompleteSURE ELEC'L CONTR'G CORP.—
▾Field Inspections (DOB CAP) — 11
DateTypeResultReport
06/09/2026Certified Remove/Cap - work done in accordance with codeCertifiedView ↗
06/08/2026Certified Sprinkler-SP-Fixtures-FinishCertifiedView ↗
06/04/2026Certified Sprinkler-SP-Piping Dry/Wet-Hydrostatic TestCertifiedView ↗
12/02/2025Pass-Final CND-Occupancy InspectionPassView ↗
08/25/2025Pass-Final CND-Occupancy InspectionPassView ↗
06/20/2025Certified Sprinkler-SP-Fixtures-FinishCertifiedView ↗
06/16/2025Certified Sprinkler-SP-Piping Dry/Wet-Hydrostatic TestCertifiedView ↗
04/26/2024Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
04/19/2024Certified Storm Drainage-ST-Piping-UndergroundCertifiedView ↗
04/19/2024Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
04/19/2024Certified Water and Sanitary-WS-Sanitary Piping-UndergroundCertifiedView ↗
▾Special Inspection Requirements (DOB NOW) — 62
DateRequirementInspectorRole
02/17/2026Fenestration air leakageKit von Dalwigenergy_progress
02/17/2026Fire-Resistant Penetrations and JointsTae Chongspecial
02/17/2026Energy Code Compliance InspectionsKit von Dalwigprogress
02/17/2026Fire-Resistance Rated ConstructionKit von Dalwigprogress
02/17/2026Air barrier - visual inspectionKit von Dalwigenergy_progress
02/17/2026Permanent certificateKit von Dalwigenergy_progress
02/17/2026Interior lighting powerKit von Dalwigenergy_progress
02/17/2026Fenestration areasKit von Dalwigenergy_progress
02/17/2026Air barrier — testing Kit von Dalwigenergy_progress
02/17/2026MeteringKit von Dalwigenergy_progress
02/17/2026Maintenance informationKit von Dalwigenergy_progress
02/17/2026Insulation placement and R valuesKit von Dalwigenergy_progress
02/17/2026Fenestration and door U-factor and product ratingsKit von Dalwigenergy_progress
12/10/2025Fenestration air leakageKit von Dalwigenergy_progress
12/10/2025Fenestration and door U-factor and product ratingsKit von Dalwigenergy_progress
12/10/2025Fire-Resistance Rated ConstructionKit von Dalwigprogress
12/10/2025Energy Code Compliance InspectionsKit von Dalwigprogress
12/10/2025Fire-Resistant Penetrations and JointsTae Chongspecial
12/10/2025MeteringKit von Dalwigenergy_progress
12/10/2025Permanent certificateKit von Dalwigenergy_progress
12/10/2025Air barrier — testing Kit von Dalwigenergy_progress
12/10/2025Insulation placement and R valuesKit von Dalwigenergy_progress
12/10/2025Maintenance informationKit von Dalwigenergy_progress
12/10/2025Fenestration areasKit von Dalwigenergy_progress
12/10/2025Interior lighting powerKit von Dalwigenergy_progress
Latest 25 of 62.
▾Documents — 68 on file (BIS + DOB NOW)
▸Plans & Drawings10
▸DOB NOWPlans/Sketch10
08/27/2026B00837665-I1Request digital key ↗
08/27/2026B00833569-I1Request digital key ↗
08/27/2026B00833582-I1Request digital key ↗
Showing 3 of 10 on file for this type
▸Zoning, Tax Lot & Property Records1
▸DOB NOWHouse Number Verification: TOPO Stamp1
08/13/2026B00831320-I1Open ↗
▸Seals & Professional Certifications37
▸DOB NOWProgress Inspector Seal & Signature16
09/05/2026B00831320-P2Open ↗
09/05/2026B00831320-P2Open ↗
09/01/2026B00831320-I1Open ↗
Showing 3 of 16 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature11
09/05/2026B00831320-P2Open ↗
09/01/2026B00831320-I1Open ↗
08/28/2026B00834262-P1Open ↗
Showing 3 of 11 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature10
08/27/2026B00833569-I1Open ↗
08/27/2026B00834262-I1Open ↗
08/27/2026B00834262-P1Open ↗
Showing 3 of 10 on file for this type
▸Safety & Tenant Protection6
▸DOB NOWStreet Tree Checklist3
08/13/2026B00831320-I1Open ↗
08/13/2026B00831320-P1Open ↗
08/13/2026B00831320-P2Open ↗
▸DOB NOWParks Department Acknowledgment Letter for Street Trees Plan1
08/13/2026B00831320-I1Open ↗
▸DOB NOWStreet Trees Site Plan1
08/13/2026B00831320-I1Open ↗
▸DOB NOWStreet Tree Sign Off1
08/13/2026B00831320-I1Open ↗
▸Environmental & Asbestos9
▸DOB NOWDEP ACP-5: Asbestos Assessment Report9
08/27/2026B00833569-I1Open ↗
08/25/2026B00831320-P2Open ↗
08/25/2026B00831320-I1Open ↗
Showing 3 of 9 on file for this type
▸Approvals, Objections & Sign-offs1
▸DOB NOWUtility Company Final Acceptance Letter1
08/13/2026B01074591-I1Open ↗
▸Other Documents4
▸DOB NOWProperty Ownership Certification3
08/25/2026B00831320-P2Open ↗
08/25/2026B00831320-I1Open ↗
08/15/2026B00831320-P1Open ↗
▸DOB NOWFinal Survey1
08/13/2026B00831320-I1Open ↗