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Two family converted from one family
471 JEFFERSON AVENUE
BROOKLYN · BIN 3052171
💬 Discuss this project
1899Year Built
2Stories
B3Building Class
R6BZoning
2,700 sfGross Floor Area
2Units
FDNY Report ↗
Two family converted from one family · 2,000 sf lot · 1.35 FAR built · Flood zone X
Locations of Work
ArchitectureStructuralMechanicalPlumbing
Roof33p · 4 filings · 20 docs
Floor 235p · 4 filings · 20 docs
Floor 126p · 2 filings · 17 docs
Cellar31p · 4 filings · 20 docs
Basement1p · 1 filing · 7 docs
Sub-Basement26p · 2 filings · 17 docs
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
09/17/2021$1.6M—— → —$611/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
NICOLE WIZNITZER, RA306/20/2023
BLACK BOX ENGINEERING206/20/2023
KEVIN GALLEN PE LLC204/06/2022
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
JON PAUL DESIGN & CONSULTING1403/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
M DADDIO INCGeneral Contractor1007/08/2026
CBB PLUMBING CORPPlumbing207/08/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
BLACK BOX ENGINEERING7196306/20/2023
DOMANI INSPECTION SERVICE843406/20/2023
Building Lifecycle
All (59)Filed (7)Permit Issued (8)Signed Off (1)Inspection (7)Objection (6)Special Inspection (30)
04/11/2025
Inspection — Certified Storm Drainage-ST-Fixtures-Finish
Certified
View inspection ↗
04/11/2025
Inspection — Certified Water and Sanitary-WS-Fixtures-Finish
Certified
View inspection ↗
01/14/2025
Signed off — Alteration
B00701382-I1
11/06/2024
Permit issued — Structural
B00701382-I1-ST
10/16/2024
Inspection — Pass-Final CND-Occupancy Inspection
Pass
View inspection ↗
10/10/2024
Inspection — Fail-Final CND-Occupancy Inspection
Fail
View inspection ↗
07/23/2024
Inspection — Pass-Final PL - Up to 3 Requested Floors
Pass
View inspection ↗
06/28/2024
Permit issued — Plumbing
B00699130-I1-PL
06/27/2024
Permit issued — General Construction
B00685969-I1-GC
04/18/2024
Inspection — Pass-Final CND-Occupancy Inspection
Pass
View inspection ↗
09/15/2023
Inspection — Pass-Final PL - Up to 9 Requested Floors
Pass
View inspection ↗
08/25/2023
Special inspection requirement — Final
David Bueno
08/25/2023
Special inspection requirement — Structural Wood Frame
David Bueno
08/25/2023
Special inspection requirement — Structural Steel - Welding
David Bueno
08/25/2023
Special inspection requirement — Post-installed Anchors
David Bueno
08/25/2023
Special inspection requirement — Structural Steel - Details
David Bueno
08/25/2023
Special inspection requirement — Concrete - Cast-In-Place
David Bueno
08/25/2023
Special inspection requirement — Structural Steel - High Strength Bolting
David Bueno
08/25/2023
Special inspection requirement — Structural Stability – Alterations of existing buildings
David Bueno
08/24/2023
Objection resolved — Addressed
08/24/2023
Special inspection requirement — Interior lighting power
JOHN MCMONAGLE
08/24/2023
Special inspection requirement — Insulation placement and R values
JOHN MCMONAGLE
08/24/2023
Special inspection requirement — Fenestration and door U-factor and product ratings
JOHN MCMONAGLE
08/24/2023
Special inspection requirement — Air barrier - visual inspection
JOHN MCMONAGLE
08/24/2023
Special inspection requirement — Lighting in dwelling units
JOHN MCMONAGLE
08/24/2023
Special inspection requirement — Fenestration areas
JOHN MCMONAGLE
08/24/2023
Special inspection requirement — Fenestration air leakage
JOHN MCMONAGLE
08/24/2023
Special inspection requirement — Chimneys and vents
JOHN MCMONAGLE
08/24/2023
Special inspection requirement — Structural Stability – Alterations of existing buildings
JOHN MCMONAGLE
08/24/2023
Special inspection requirement — Fire-Resistant Penetrations and Joints
JOHN MCMONAGLE
08/24/2023
Special inspection requirement — Post-installed Anchors
JOHN MCMONAGLE
08/24/2023
Special inspection requirement — Energy Code Compliance Inspections
JOHN MCMONAGLE
08/24/2023
Special inspection requirement — Fire-Resistance Rated Construction
JOHN MCMONAGLE
08/21/2023
Objection resolved — Addressed
07/31/2023
Objection raised — Scope
07/31/2023
Objection raised — Scope
06/29/2023
Objection resolved — Addressed
06/26/2023
Objection raised — Scope
06/20/2023
Filed — Alteration
RENOVATE EXISTING 2-FAMILY DWELLING, INCLUDING PARTITIONS & COSMETIC FINISHES AS PER PLANS FILED HEREWITH. MS, PL, & ST WORKTYPES FILED SEPARATELY THROUGH DOBNOW. NO CHANGE TO EGRESS, USE OR OCCUPANCY.
B00685969-P2
06/20/2023
Filed — Alteration
B00701382-P1
06/13/2023
Special inspection requirement — Fenestration and door U-factor and product ratings
JOHN MCMONAGLE
06/13/2023
Special inspection requirement — Fenestration areas
JOHN MCMONAGLE
06/13/2023
Special inspection requirement — Chimneys and vents
JOHN MCMONAGLE
06/13/2023
Special inspection requirement — Fire-Resistant Penetrations and Joints
JOHN MCMONAGLE
06/13/2023
Special inspection requirement — Post-installed Anchors
David Bueno
06/13/2023
Special inspection requirement — Structural Stability – Alterations of existing buildings
David Bueno
06/13/2023
Special inspection requirement — Energy Code Compliance Inspections
JOHN MCMONAGLE
06/13/2023
Special inspection requirement — Fire-Resistance Rated Construction
JOHN MCMONAGLE
06/13/2023
Special inspection requirement — Interior lighting power
JOHN MCMONAGLE
05/05/2023
Permit issued — Plumbing
B00699130-I1-PL
05/04/2023
Permit issued — Mechanical Systems
B00699019-I1-MS
02/27/2023
Permit issued — General Construction
B00685969-I1-GC
01/11/2023
Permit issued — Structural
B00701382-I1-ST
08/23/2022
Permit issued — Structural
B00701382-I1-ST
07/11/2022
Filed — Alteration
RENOVATE EXISTING 2-FAMILY DWELLING, INCLUDING PARTITIONS & COSMETIC FINISHES AS PER PLANS FILED HEREWITH. MS, PL, & ST WORKTYPES FILED SEPARATELY THROUGH DOBNOW. NO CHANGE TO EGRESS, USE OR OCCUPANCY.
B00685969-P1
04/07/2022
Filed — Alteration
B00701382-I1
04/06/2022
Filed — Alteration
PL WORKTYPE FILED IN CONJUNCTION WITH DOB NOW #B00685969. NO CHANGE TO EGRESS, USE OR OCCUPANCY.
B00699130-I1
04/05/2022
Filed — Alteration
MECHANICAL SYSTEMS FILING IN CONJUNCTION WITH RENOVATION FILED UNDER DOBNOW #B00685969-I1, AS PER PLANS FILED HEREWITH. NO CHANGE TO EGRESS, USE OR OCCUPANCY.
B00699019-I1
04/04/2022
Filed — Alteration
RENOVATE EXISTING 2-FAMILY DWELLING, INCLUDING PARTITIONS & COSMETIC FINISHES AS PER PLANS FILED HEREWITH. MS, PL, & ST WORKTYPES FILED SEPARATELY THROUGH DOBNOW. NO CHANGE TO EGRESS, USE OR OCCUPANCY.
B00685969-I1
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWStructuralSigned-offM DADDIO INC11/06/2024
DOB NOWPlumbingPermit IssuedCBB PLUMBING CORP06/28/2024
DOB NOWGeneral ConstructionPermit IssuedM DADDIO INC06/27/2024
DOB NOWPlumbingPermit IssuedCBB PLUMBING CORP05/05/2023
DOB NOWMechanical SystemsSigned-offM DADDIO INC05/04/2023
DOB NOWGeneral ConstructionPermit IssuedM DADDIO INC02/27/2023
DOB NOWStructuralSigned-offM DADDIO INC01/11/2023
DOB NOWStructuralSigned-offM DADDIO INC08/23/2022
1 project · most recent 04/05/2022
Associated Ducts and Piping Heating and Air Conditioning Systems Heating Systems Refrigeration Systems Ventilation Systems
FiledStatusContractorScopeMake / Model / Capacity
04/05/2022Signed-offM DADDIO INCAssociated Ducts and Piping, Heating and Air Conditioning Systems, Heating Systems, Refrigeration Systems
Heat / Cool
Mitsubishi Electric PUMY-P60NKMU-3 5 tons · Vrf Outdoor ×1
Heating
Nvent Nuheat 2,457 BTU · Electric Heater ×3
Indeeco BBI #903U00350B 1,194 BTU · Radiant ×1
Ventilation
Renewaire EV Premium M 170 CFM · Erv ×1
Refrigeration
Cellarcool WM 2500-S 2,101 BTU ×1
Ducts & Piping
N/A n/a 3,120 CFM · Ductwork ×1
1 project · most recent 04/06/2022
Gas Storm Water/Sanitary
FiledStatusContractorScope
04/06/2022Permit IssuedCBB PLUMBING CORPGas, Storm, Water/Sanitary
2 projects · most recent 06/11/2025
General Wiring
FiledStatusContractorScope
06/11/2025CompleteACCURATE ELEC'L CORP.General Wiring
05/19/2025CompleteACCURATE ELEC'L CORP.3 meters, 3 new_meters
▾Field Inspections (DOB CAP) — 7
DateTypeResultReport
04/11/2025Certified Storm Drainage-ST-Fixtures-FinishCertifiedView ↗
04/11/2025Certified Water and Sanitary-WS-Fixtures-FinishCertifiedView ↗
10/16/2024Pass-Final CND-Occupancy InspectionPassView ↗
10/10/2024Fail-Final CND-Occupancy InspectionFailView ↗
07/23/2024Pass-Final PL - Up to 3 Requested FloorsPassView ↗
04/18/2024Pass-Final CND-Occupancy InspectionPassView ↗
09/15/2023Pass-Final PL - Up to 9 Requested FloorsPassView ↗
▾Special Inspection Requirements (DOB NOW) — 59
DateRequirementInspectorRole
08/25/2023FinalDavid Buenoprogress
08/25/2023Structural Wood FrameDavid Buenoprogress
08/25/2023Structural Steel - WeldingDavid Buenospecial
08/25/2023Post-installed AnchorsDavid Buenospecial
08/25/2023Structural Steel - DetailsDavid Buenospecial
08/25/2023Concrete - Cast-In-PlaceDavid Buenospecial
08/25/2023Structural Steel - High Strength BoltingDavid Buenospecial
08/25/2023Structural Stability – Alterations of existing buildingsDavid Buenospecial
08/24/2023Interior lighting powerJOHN MCMONAGLEenergy_progress
08/24/2023Insulation placement and R valuesJOHN MCMONAGLEenergy_progress
08/24/2023Fenestration and door U-factor and product ratingsJOHN MCMONAGLEenergy_progress
08/24/2023Air barrier - visual inspectionJOHN MCMONAGLEenergy_progress
08/24/2023Lighting in dwelling unitsJOHN MCMONAGLEenergy_progress
08/24/2023Fenestration areasJOHN MCMONAGLEenergy_progress
08/24/2023Fenestration air leakageJOHN MCMONAGLEenergy_progress
08/24/2023Chimneys and ventsJOHN MCMONAGLEspecial
08/24/2023Structural Stability – Alterations of existing buildingsJOHN MCMONAGLEspecial
08/24/2023Fire-Resistant Penetrations and JointsJOHN MCMONAGLEspecial
08/24/2023Post-installed AnchorsJOHN MCMONAGLEspecial
08/24/2023Energy Code Compliance InspectionsJOHN MCMONAGLEprogress
08/24/2023Fire-Resistance Rated ConstructionJOHN MCMONAGLEprogress
06/13/2023Fenestration and door U-factor and product ratingsJOHN MCMONAGLEenergy_progress
06/13/2023Fenestration areasJOHN MCMONAGLEenergy_progress
06/13/2023Chimneys and ventsJOHN MCMONAGLEspecial
06/13/2023Fire-Resistant Penetrations and JointsJOHN MCMONAGLEspecial
Latest 25 of 59.
▾Documents — 30 on file (BIS + DOB NOW)
▸Plans & Drawings7
▸DOB NOWPlans/Sketch7
08/30/2026B00699019-I1Request digital key ↗
08/30/2026B00699130-I1Request digital key ↗
08/30/2026B00701382-P1Request digital key ↗
Showing 3 of 7 on file for this type
▸Seals & Professional Certifications19
▸DOB NOWDPL-1: Design Professional Seal & Signature7
08/30/2026B00699019-I1Open ↗
08/30/2026B00701382-P1Open ↗
08/30/2026B00701382-I1Open ↗
Showing 3 of 7 on file for this type
▸DOB NOWProgress Inspector Seal & Signature7
09/20/2026B00685969-P2Open ↗
09/20/2026B00685969-P2Open ↗
08/28/2026B00701382-I1Open ↗
Showing 3 of 7 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature5
09/20/2026B00685969-P2Open ↗
09/20/2026B00685969-P2Open ↗
08/28/2026B00701382-I1Open ↗
Showing 3 of 5 on file for this type
▸Environmental & Asbestos4
▸DOB NOWDEP ACP-20/ACP-21: Asbestos Project Conditional Completion Form/Asbestos Project Completion Form4
08/30/2026B00699019-I1Open ↗
08/30/2026B00701382-I1Open ↗
08/27/2026B00685969-I1Open ↗
Showing 3 of 4 on file for this type