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One family attached or semi-detached
20 PROSPECT PARK SW
BROOKLYN · Windsor Terrace-South Slope · BIN 3026738
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1899Year Built
3Stories
A5Building Class
R6AZoning
2,898 sfGross Floor Area
1Units
0 Open ViolationsFDNY Report ↗
One family attached or semi-detached · 1,615 sf lot · 1.79 FAR built · Flood zone X
Locations of Work
ArchitectureStructuralMechanicalPlumbing
Permit Issued — active, not yet Signed-off
Roof1p · 1 filing · 7 docs
Floor 3Under Construction7p · 1 filing · 20 docs
Floor 2Under Construction7p · 1 filing · 20 docs
Floor 1Under Construction17p · 1 filing · 20 docs
CellarUnder Construction26p · 1 filing · 20 docs
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
06/16/2017$2.8M—Private party → Private party$949/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
D'ANTONIO CONSULTING ENGINEERS407/16/2026
NY BUILDING ASSOCIATES INC108/25/2025
DOUGLAS KOCHER, RA208/21/2024
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
BROOKLYN SOLARWORKS103/21/2026
CODE803/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
A & K CREATIVE CONSTRUCT*General Contractor307/08/2026
SIGNORE & SONS PLBG CORPPlumbing208/05/2026
BROOKLYN SOLARWORKS LLCGeneral Contractor104/09/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
D'ANTONIO CONSULTING ENGI931407/16/2026
NKM ENGINEERING PLLC6244108/25/2025
CHEN ENGINEERING SERVICES1826108/21/2024
Building Lifecycle
All (89)Filed (7)Permit Issued (6)Signed Off (1)Violation (1)Inspection (6)Objection (38)Special Inspection (30)
08/04/2026
Special inspection requirement — HVAC-R and service water piping design and insulation
GAETANO D'ANTONIO
08/04/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
GAETANO D'ANTONIO
08/04/2026
Special inspection requirement — Energy Code Compliance Inspections
GAETANO D'ANTONIO
08/04/2026
Special inspection requirement — HVAC-R and service water heating equipment
GAETANO D'ANTONIO
08/04/2026
Special inspection requirement — HVAC-R and service water heating system controls
GAETANO D'ANTONIO
07/16/2026
Filed — Alteration
RENOVATION OF THE EXISTING TOWNHOUSE HVAC SYSTEM TO ENHANCE CELLAR TEMPERATURE CONTROL.
B01070166-P2
04/27/2026
Filed — Alteration
RENOVATION OF THE EXISTING TOWNHOUSE HVAC SYSTEM TO ENHANCE CELLAR TEMPERATURE CONTROL.
B01070166-P1
04/27/2026
Special inspection requirement — Energy Code Compliance Inspections
GAETANO D'ANTONIO
04/27/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
GAETANO D'ANTONIO
04/23/2026
Special inspection requirement — HVAC-R and service water heating system controls
GAETANO D'ANTONIO
04/23/2026
Special inspection requirement — HVAC-R and service water heating equipment
GAETANO D'ANTONIO
04/23/2026
Special inspection requirement — HVAC-R and service water piping design and insulation
GAETANO D'ANTONIO
01/16/2026
Signed off — Alteration
INSTALLATION OF SOLAR PV SYSTEM. NO CHANGE TO USE, EGRESS, OR OCCUPANCY.
B01274212-I1
08/29/2025
Inspection — Certified Gas-Gas-Piping-Roughing
Certified
View inspection ↗
08/25/2025
Filed — Alteration
INSTALLATION OF SOLAR PV SYSTEM. NO CHANGE TO USE, EGRESS, OR OCCUPANCY.
B01274212-I1
08/25/2025
Permit issued — Solar
B01274212-I1-SL
08/19/2025
Special inspection requirement — Final
NARESH MAHANGU
08/19/2025
Special inspection requirement — Energy Code Compliance Inspections
NARESH MAHANGU
08/19/2025
Special inspection requirement — Structural Stability – Alterations of existing buildings
NARESH MAHANGU
08/19/2025
Special inspection requirement — Fire-Resistant Penetrations and Joints
NARESH MAHANGU
08/19/2025
Special inspection requirement — Air barrier - visual inspection
NARESH MAHANGU
08/13/2025
Inspection — Pass-Final CND-Occupancy Inspection
Pass
View inspection ↗
07/09/2025
Permit issued — Plumbing
B01070166-S3-PL
06/24/2025
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Roughing
Certified
View inspection ↗
06/24/2025
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Underground
Certified
View inspection ↗
06/04/2025
Violation issued (DOB, closed)
V*-DOB VIOLATION - DISMISSED
04/02/2025
Inspection — Pass-Final CND-Occupancy Inspection
Pass
View inspection ↗
03/12/2025
Permit issued — Plumbing
B01070166-S3-PL
01/28/2025
Permit issued — Mechanical Systems
B01070166-S2-MS
01/28/2025
Permit issued — General Construction
B01070166-I1-GC
01/28/2025
Permit issued — Structural
B01070166-S1-ST
11/08/2024
Objection resolved — Addressed
11/08/2024
Objection resolved — Addressed
10/04/2024
Objection resolved — Addressed
09/26/2024
Objection resolved — Addressed
09/26/2024
Objection resolved — Addressed
09/26/2024
Objection resolved — Addressed
09/23/2024
Inspection — Fail-Final CND-Occupancy Inspection
Fail
View inspection ↗
09/20/2024
Objection resolved — Addressed
09/20/2024
Objection resolved — Addressed
09/20/2024
Objection resolved — Addressed
09/20/2024
Objection resolved — Addressed
09/20/2024
Objection resolved — Addressed
09/20/2024
Objection resolved — Addressed
09/20/2024
Objection resolved — Addressed
09/20/2024
Objection resolved — Addressed
09/20/2024
Objection resolved — Addressed
09/10/2024
Objection resolved — Addressed
09/05/2024
Objection resolved — Addressed
09/05/2024
Objection resolved — Addressed
09/05/2024
Objection resolved — Addressed
09/03/2024
Objection raised — Fire_Protection
09/03/2024
Objection raised — Structural
09/03/2024
Objection raised — Structural
09/03/2024
Objection raised — Structural
09/03/2024
Objection raised — Mechanical
09/03/2024
Objection raised — Fire_Protection
09/03/2024
Objection raised — Admin
09/03/2024
Objection raised — Scope
09/03/2024
Objection raised — Scope
Latest 60 of 89 events.
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWSolarSigned-offBROOKLYN SOLARWORKS LLC08/25/2025
DOB NOWPlumbingPermit IssuedSIGNORE & SONS PLBG CORP07/09/2025
DOB NOWPlumbingPermit IssuedRELIABLE CUSTOM BUILDERS*03/12/2025
DOB NOWMechanical SystemsPermit IssuedA & K CREATIVE CONSTRUCT*01/28/2025
DOB NOWGeneral ConstructionPermit IssuedA & K CREATIVE CONSTRUCT*01/28/2025
DOB NOWStructuralPermit IssuedA & K CREATIVE CONSTRUCT*01/28/2025
BIS—ISSUEDA & K CREATIVE CONSTRUCT*01/22/2019
BISPLISSUEDSO PLUMBING & HEATING INC07/18/2018
BIS—ISSUEDA & K CREATIVE CONSTRUCT*06/21/2018
1 project · most recent 07/16/2026
Gas Water/Sanitary
FiledStatusContractorScope
07/16/2026Permit IssuedSIGNORE & SONS PLBG CORPGas, Water/Sanitary
3 projects · most recent 08/19/2025
General Wiring
FiledStatusContractorScope
08/19/2025CompleteBROOKYLN SOLARWORKS, LLC—
02/10/2025Permit IssuedLENS ELECTRIC, INCGeneral Wiring
06/30/2018CompleteLENS ELECTRIC, INCGeneral Wiring
1 project · most recent 07/16/2026
Steel Concrete Masonry Wood
FiledStatusContractorScope
07/16/2026Permit IssuedSIGNORE & SONS PLBG CORPSteel, Concrete, Masonry, Wood
▾Field Inspections (DOB CAP) — 6
DateTypeResultReport
08/29/2025Certified Gas-Gas-Piping-RoughingCertifiedView ↗
08/13/2025Pass-Final CND-Occupancy InspectionPassView ↗
06/24/2025Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
06/24/2025Certified Water and Sanitary-WS-Sanitary Piping-UndergroundCertifiedView ↗
04/02/2025Pass-Final CND-Occupancy InspectionPassView ↗
09/23/2024Fail-Final CND-Occupancy InspectionFailView ↗
▾Special Inspection Requirements (DOB NOW) — 43
DateRequirementInspectorRole
08/04/2026HVAC-R and service water piping design and insulationGAETANO D'ANTONIOenergy_progress
08/04/2026Fire-Resistant Penetrations and JointsGAETANO D'ANTONIOspecial
08/04/2026Energy Code Compliance InspectionsGAETANO D'ANTONIOprogress
08/04/2026HVAC-R and service water heating equipmentGAETANO D'ANTONIOenergy_progress
08/04/2026HVAC-R and service water heating system controlsGAETANO D'ANTONIOenergy_progress
04/27/2026Energy Code Compliance InspectionsGAETANO D'ANTONIOprogress
04/27/2026Fire-Resistant Penetrations and JointsGAETANO D'ANTONIOspecial
04/23/2026HVAC-R and service water heating system controlsGAETANO D'ANTONIOenergy_progress
04/23/2026HVAC-R and service water heating equipmentGAETANO D'ANTONIOenergy_progress
04/23/2026HVAC-R and service water piping design and insulationGAETANO D'ANTONIOenergy_progress
08/19/2025FinalNARESH MAHANGUprogress
08/19/2025Energy Code Compliance InspectionsNARESH MAHANGUprogress
08/19/2025Structural Stability – Alterations of existing buildingsNARESH MAHANGUspecial
08/19/2025Fire-Resistant Penetrations and JointsNARESH MAHANGUspecial
08/19/2025Air barrier - visual inspectionNARESH MAHANGUenergy_progress
08/21/2024Insulation placement and R valuesDouglas Kocherenergy_progress
08/21/2024Interior lighting powerDouglas Kocherenergy_progress
08/21/2024Fenestration and door U-factor and product ratingsDouglas Kocherenergy_progress
08/21/2024Fenestration areasDouglas Kocherenergy_progress
08/21/2024Fenestration air leakageDouglas Kocherenergy_progress
08/21/2024Air barrier - visual inspectionDouglas Kocherenergy_progress
08/21/2024MeteringDouglas Kocherenergy_progress
08/19/2024Permanent certificateGAETANO D'ANTONIOenergy_progress
08/19/2024HVAC-R and service water piping design and insulationGAETANO D'ANTONIOenergy_progress
08/19/2024Duct leakage testing, insulation and designGAETANO D'ANTONIOenergy_progress
Latest 25 of 43.
▾Documents — 134 on file (BIS + DOB NOW)
▸Plans & Drawings7
▸DOB NOWPlans/Sketch7
08/20/2026B01274212-I1Request digital key ↗
08/17/2026B01070166-P1Request digital key ↗
08/17/2026B01070166-P2Request digital key ↗
Showing 3 of 7 on file for this type
▸Applications & Permits15
▸BISPLAN / WORK APPROVAL APPLICATION9
04/23/2021321713632Open ↗
08/26/2020321713632Open ↗
08/21/2020321713632Open ↗
Showing 3 of 9 on file for this type
▸BISPLAN - WORK & PERMITS - SUPPPORTING DOCUMENTATION3
05/23/2019321713632Open ↗
09/19/2018321713632Open ↗
09/19/2018321713632Open ↗
▸BISWORK PERMIT APPLICATION2
07/19/2018321713632Open ↗
06/21/2018321713632Open ↗
▸BISCERTIFICATE OF OCCUPANCY: APPLICATION1
08/30/2019321713632Open ↗
▸Zoning, Tax Lot & Property Records2
▸BISVERIFY TAX LOT1
06/25/2021321713632Open ↗
▸BISCO OBJ: VERIFY ADDRESS-TOPO STAMP1
06/25/2021321713632Open ↗
▸Seals & Professional Certifications59
▸DOB NOWProgress Inspector Seal & Signature29
09/29/2026B01274212-I1Open ↗
09/29/2026B01274212-I1Open ↗
09/20/2026B01070166-S1Open ↗
Showing 3 of 29 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature12
09/29/2026B01274212-I1Open ↗
09/20/2026B01070166-S1Open ↗
09/20/2026B01070166-S1Open ↗
Showing 3 of 12 on file for this type
▸BISTECHNICAL REPORT: RESPONSIBILITY/CERTIFICATION11
10/22/2019321713632Open ↗
10/22/2019321713632Open ↗
10/22/2019321713632Open ↗
Showing 3 of 11 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature7
08/17/2026B01070166-P2Open ↗
08/17/2026B01070166-P1Open ↗
08/17/2026B01070166-I1Open ↗
Showing 3 of 7 on file for this type
▸Trade Schedules & Equipment6
▸BISEQUIPMENT USE APPLICATION/PERMIT2
06/29/2021321713632Open ↗
06/25/2021321713632Open ↗
▸BISEQUIPMENT USE PERMITS2
06/29/2021321713632Open ↗
06/25/2021321713632Open ↗
▸BISSCHEDULE B - PLUMBING/SPRINKLER/STANDPIPE2
03/30/2018321713632Open ↗
10/10/2017321663687Open ↗
▸Safety & Tenant Protection3
▸BISTenant Protection Plan and Notes2
03/30/2018321713632Open ↗
10/10/2017321663687Open ↗
▸BISSTREET TREE CHECKLIST1
03/30/2018321713632Open ↗
▸Environmental & Asbestos8
▸DOB NOWDEP ACP-5: Asbestos Assessment Report7
08/17/2026B01070166-P2Open ↗
08/17/2026B01070166-P1Open ↗
08/17/2026B01070166-S2Open ↗
Showing 3 of 7 on file for this type
▸BISASBESTOS: CERTIFICATION (DEP ACP5)1
05/24/2018321713632Open ↗
▸Energy Compliance5
▸BISTECHNICAL REPORT: ENERGY CODE PROGRESS INSPS5
10/22/2019321713632Open ↗
10/22/2019321713632Open ↗
10/22/2019321713632Open ↗
Showing 3 of 5 on file for this type
▸Approvals, Objections & Sign-offs6
▸BISSCHEDULE A - OCCUPANCY / USE5
04/23/2021321713632Open ↗
08/26/2020321713632Open ↗
08/21/2020321713632Open ↗
Showing 3 of 5 on file for this type
▸DOB NOWUtility Company Final Acceptance Letter1
08/13/2026B01274212-I1Open ↗
▸Cost, Insurance & Ownership9
▸BISCOST AFFIDAVIT9
06/25/2021321713632Open ↗
10/25/2018321713632Open ↗
10/25/2018321713632Open ↗
Showing 3 of 9 on file for this type
▸Filing & Intake Forms11
▸BISADDITIONAL INFORMATION5
04/23/2021321713632Open ↗
10/25/2018321713632Open ↗
10/25/2018321713632Open ↗
Showing 3 of 5 on file for this type
▸BISEFILING COVER SHEET4
03/30/2018321713632Open ↗
03/30/2018321713632Open ↗
03/30/2018321713632Open ↗
Showing 3 of 4 on file for this type
▸BISBOROUGH INTAKE FORM2
02/14/2020321663687Open ↗
08/30/2019321713632Open ↗
▸Other Documents3
▸BISARA Supporting Document2
10/22/2019321713632Open ↗
10/22/2019321713632Open ↗
▸BISPLOT DIAGRAM1
03/30/2018321713632Open ↗