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Two family brick
509 6 AVENUE
BROOKLYN · Park Slope · BIN 3023254
💬 Discuss this project
1899Year Built
2Stories
B1Building Class
R6BZoning
1,890 sfGross Floor Area
2Units
Rent Stabilized0 Open ViolationsFDNY Report ↗
Two family brick · 1,468 sf lot · 1.29 FAR built · Flood zone X
Locations of Work
ArchitectureStructuralElectricalMechanicalPlumbingFire ProtectionCivil
Permit Issued — active, not yet Signed-off
RoofUnder Construction50p · 1 filing · 20 docs
Floor 3Under Construction60p · 1 filing · 20 docs
Floor 2Under Construction59p · 2 filings · 20 docs
Floor 1Under Construction59p · 3 filings · 20 docs
CellarUnder Construction60p · 2 filings · 20 docs
BasementUnder Construction59p · 1 filing · 20 docs
Sub-BasementUnder Construction3p · 1 filing · 3 docs
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
09/30/2025$2.3M—Private party → Private party$1,217/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
APPEL ARCHITECTURE, DPC704/22/2026
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
J CALLAHAN CONSULTING1203/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
PTG GROUP LLCGeneral Contractor509/19/2026
YARKS NYC INCGeneral Contractor209/22/2026
RICHMOND P & H CO, INCFire Protection108/16/2026
RICHMOND PLUMBING & HEAT*General Contractor107/30/2026
RICHMOND PLBG & HTG CO INPlumbing106/28/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
TECHNICAL SYSTEMS REVIEW,7409504/22/2026
PILLORI ASSOCIATES2317102/03/2026
Building Lifecycle
All (118)Filed (7)Permit Issued (10)Violation (1)Objection (70)Special Inspection (30)
09/21/2026
Permit issued — Sidewalk Shed
B01443014-I1-SH
09/21/2026
Permit issued — Sidewalk Shed
B01443014-I1-SF
09/18/2026
Permit issued — Structural
B01322734-S1-ST
08/17/2026
Permit issued — General Construction
B01322734-I1-GC
08/14/2026
Permit issued — Sprinklers
B01322734-S4-EW-SP
08/13/2026
Objection resolved — Resolved
08/13/2026
Objection resolved — Addressed
08/13/2026
Objection resolved — Addressed
08/13/2026
Objection resolved — Resolved
08/13/2026
Objection resolved — Resolved
08/11/2026
Permit issued — Foundation
B01322734-S3-FO
08/04/2026
Objection resolved — Addressed
08/04/2026
Objection resolved — Addressed
07/29/2026
Permit issued — Mechanical Systems
B01322734-S5-MS
07/02/2026
Objection resolved — Addressed
07/02/2026
Special inspection requirement — Underpinning
Gregory Pillori
06/23/2026
Objection raised — Other
06/17/2026
Special inspection requirement — Structural Stability – Alterations of existing buildings
ALEKSANDR ABRAMOV
06/15/2026
Permit issued — Plumbing
B01322734-S2-PL
06/01/2026
Special inspection requirement — Maintenance information
ALEKSANDR ABRAMOV
05/06/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
ALEKSANDR ABRAMOV
05/06/2026
Special inspection requirement — Energy Code Compliance Inspections
ALEKSANDR ABRAMOV
05/06/2026
Special inspection requirement — Shutoff dampers
ALEKSANDR ABRAMOV
04/30/2026
Objection resolved — Resolved
04/22/2026
Filed — Alteration CO
CONVERSION OF A TWO-FAMILY RESIDENCE TO A SINGLE-FAMILY RESIDENCE. A NEW STORY IS PROPOSED AND A NEW CERTIFICATE OF OCCUPANCY WILL BE OBTAINED.
B01322734-S5
04/17/2026
Objection raised — Structural
04/15/2026
Special inspection requirement — HVAC-R and service water heating system controls
ALEKSANDR ABRAMOV
04/15/2026
Special inspection requirement — HVAC-R and service water heating equipment
ALEKSANDR ABRAMOV
04/15/2026
Special inspection requirement — HVAC-R and service water piping design and insulation
ALEKSANDR ABRAMOV
04/07/2026
Objection resolved — Addressed
04/07/2026
Special inspection requirement — Maintenance information
ALEKSANDR ABRAMOV
04/07/2026
Special inspection requirement — Lighting controls
ALEKSANDR ABRAMOV
03/25/2026
Objection raised — Energy
03/24/2026
Objection resolved — Addressed
03/20/2026
Objection resolved — Addressed
03/20/2026
Objection resolved — Addressed
03/20/2026
Objection resolved — Addressed
03/20/2026
Objection resolved — Addressed
03/20/2026
Special inspection requirement — HVAC-R and service water heating system controls
ALEKSANDR ABRAMOV
03/20/2026
Special inspection requirement — HVAC-R and service water heating equipment
ALEKSANDR ABRAMOV
03/18/2026
Special inspection requirement — Permanent certificate
ALEKSANDR ABRAMOV
03/12/2026
Objection resolved — Addressed
03/03/2026
Objection resolved — Addressed
03/03/2026
Objection resolved — Addressed
02/12/2026
Objection raised — Admin
02/12/2026
Objection raised — Structural
02/12/2026
Objection raised — Scope
02/12/2026
Objection raised — Scope
02/12/2026
Objection raised — Structural
02/12/2026
Objection raised — Structural
02/12/2026
Objection raised — Structural
02/12/2026
Objection raised — Other
02/12/2026
Objection resolved — Addressed
02/12/2026
Objection raised — Structural
02/12/2026
Objection resolved — Addressed
02/12/2026
Objection resolved — Addressed
02/12/2026
Objection resolved — Addressed
02/11/2026
Objection raised — Plumbing
02/11/2026
Objection raised — Other
02/11/2026
Objection raised — Cost
Latest 60 of 118 events.
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWSidewalk ShedPermit IssuedYARKS NYC INC09/21/2026
DOB NOWSidewalk ShedPermit IssuedYARKS NYC INC09/21/2026
DOB NOWStructuralPermit IssuedPTG GROUP LLC09/18/2026
DOB NOWGeneral ConstructionPermit IssuedPTG GROUP LLC08/17/2026
DOB NOWSprinklersPermit IssuedRICHMOND P & H CO, INC08/14/2026
DOB NOWFoundationPermit IssuedPTG GROUP LLC08/11/2026
DOB NOWMechanical SystemsPermit IssuedRICHMOND PLUMBING & HEAT*07/29/2026
DOB NOWPlumbingPermit IssuedRICHMOND PLBG & HTG CO IN06/15/2026
DOB NOWGeneral ConstructionPermit IssuedPTG GROUP LLC01/02/2026
DOB NOWGeneral ConstructionPermit IssuedPTG GROUP LLC11/07/2025
3 projects · most recent 09/21/2026
General Wiring
FiledStatusContractorScope
09/21/2026Permit IssuedRICHARD NEU—
08/12/2026Permit IssuedRJS ELECTRICAL CONTNG CORGeneral Wiring
11/03/2025Permit IssuedRJS ELECTRICAL CONTNG COR—
▾Special Inspection Requirements (DOB NOW) — 47
DateRequirementInspectorRole
07/02/2026UnderpinningGregory Pillorispecial
06/17/2026Structural Stability – Alterations of existing buildingsALEKSANDR ABRAMOVspecial
06/01/2026Maintenance informationALEKSANDR ABRAMOVenergy_progress
05/06/2026Fire-Resistant Penetrations and JointsALEKSANDR ABRAMOVspecial
05/06/2026Energy Code Compliance InspectionsALEKSANDR ABRAMOVprogress
05/06/2026Shutoff dampersALEKSANDR ABRAMOVenergy_progress
04/15/2026HVAC-R and service water heating system controlsALEKSANDR ABRAMOVenergy_progress
04/15/2026HVAC-R and service water heating equipmentALEKSANDR ABRAMOVenergy_progress
04/15/2026HVAC-R and service water piping design and insulationALEKSANDR ABRAMOVenergy_progress
04/07/2026Maintenance informationALEKSANDR ABRAMOVenergy_progress
04/07/2026Lighting controlsALEKSANDR ABRAMOVenergy_progress
03/20/2026HVAC-R and service water heating system controlsALEKSANDR ABRAMOVenergy_progress
03/20/2026HVAC-R and service water heating equipmentALEKSANDR ABRAMOVenergy_progress
03/18/2026Permanent certificateALEKSANDR ABRAMOVenergy_progress
01/29/2026Fire-Resistant Penetrations and JointsALEKSANDR ABRAMOVspecial
01/29/2026Post-installed AnchorsALEKSANDR ABRAMOVspecial
01/27/2026FinalALEKSANDR ABRAMOVprogress
01/27/2026Sprinkler SystemsALEKSANDR ABRAMOVspecial
01/27/2026Mechanical SystemsALEKSANDR ABRAMOVspecial
01/16/2026Energy Code Compliance InspectionsALEKSANDR ABRAMOVprogress
01/16/2026Structural Stability – Alterations of existing buildingsGregory Pillorispecial
01/16/2026Footing and FoundationGregory Pilloriprogress
01/16/2026FinalGregory Pilloriprogress
01/13/2026HVAC-R and service water piping design and insulationALEKSANDR ABRAMOVenergy_progress
01/13/2026Maintenance informationALEKSANDR ABRAMOVenergy_progress
Latest 25 of 47.
▾Documents — 52 on file (BIS + DOB NOW)
▸Plans & Drawings7
▸DOB NOWPlans/Sketch7
08/20/2026B01303750-I1Request digital key ↗
08/17/2026B01322734-S5Request digital key ↗
08/15/2026B01322734-S1Request digital key ↗
Showing 3 of 7 on file for this type
▸Zoning, Tax Lot & Property Records4
▸DOB NOWZD1: DOB Zoning Diagram2
08/15/2026B01322734-I1Open ↗
08/13/2026B01322734-I1Open ↗
▸DOB NOWHouse Number Verification: TOPO Stamp1
08/13/2026B01322734-I1Open ↗
▸DOB NOWZoning Exhibit form (1-5)1
08/15/2026B01322734-I1Open ↗
▸Seals & Professional Certifications26
▸DOB NOWSpecial Inspector Seal & Signature10
09/01/2026B01322734-I1Open ↗
08/27/2026B01322734-S5Open ↗
08/27/2026B01322734-S5Open ↗
Showing 3 of 10 on file for this type
▸DOB NOWProgress Inspector Seal & Signature9
09/01/2026B01322734-I1Open ↗
09/01/2026B01322734-I1Open ↗
08/27/2026B01322734-S5Open ↗
Showing 3 of 9 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature7
08/17/2026B01322734-S5Open ↗
08/13/2026B01322734-S4Open ↗
08/13/2026B01322734-S3Open ↗
Showing 3 of 7 on file for this type
▸Safety & Tenant Protection1
▸DOB NOWStreet Tree Checklist1
08/13/2026B01322734-I1Open ↗
▸Environmental & Asbestos9
▸DOB NOWDEP ACP-5: Asbestos Assessment Report9
08/17/2026B01322734-S5Open ↗
08/14/2026B01322734-S2Open ↗
08/13/2026B01322734-S5Open ↗
Showing 3 of 9 on file for this type
▸Other Documents5
▸DOB NOWPlot Diagram2
08/13/2026B01322734-I1Open ↗
08/13/2026B01322734-S3Open ↗
▸DOB NOWProperty Ownership Certification1
08/13/2026B01322734-I1Open ↗
▸DOB NOWLocal Law 92/94 of 2019 Sustainable Roof Zone1
08/13/2026B01322734-I1Open ↗
▸DOB NOWSite Survey: Initial1
08/13/2026B01322734-I1Open ↗