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Three families
5120 9 AVENUE
BROOKLYN · Sunset Park (East)-Borough Park (West) · BIN 3138166
💬 Discuss this project
1955Year Built
2Stories
C0Building Class
R6Zoning
2,822 sfGross Floor Area
3Units
0 Open ViolationsFDNY Report ↗
Three families · 2,408 sf lot · 1.17 FAR built · Flood zone X
Locations of Work
ArchitectureStructuralElectrical
Bulkhead3p · 1 filing · 14 docs
Floor 64p · 1 filing · 14 docs
Floor 5
Floor 4
Floor 3
Floor 23p · 1 filing · 14 docs
Floor 12p · 1 filing · 14 docs
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
11/18/2014$1.4M—Private party → Private party$482/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
YANG ENGINEERING LLC112/11/2023
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
SD DESIGN STUDIO203/21/2026
Building Lifecycle
All (45)Filed (1)Violation (2)Objection (24)Special Inspection (18)
12/03/2024
Objection resolved — Addressed
10/07/2024
Objection resolved — Addressed
09/17/2024
Objection resolved — Addressed
09/17/2024
Objection resolved — Addressed
09/17/2024
Objection resolved — Addressed
09/17/2024
Objection resolved — Addressed
05/29/2024
Objection resolved — Addressed
05/29/2024
Objection resolved — Addressed
03/23/2024
Objection resolved — Addressed
03/23/2024
Objection resolved — Addressed
01/23/2024
Objection resolved — Addressed
01/23/2024
Objection resolved — Addressed
01/16/2024
Objection raised — Zoning
01/16/2024
Objection raised — Fire_Protection
01/16/2024
Objection raised — Zoning
01/16/2024
Objection raised — Zoning
01/16/2024
Objection raised — Fire_Protection
01/16/2024
Objection raised — Accessibility
01/16/2024
Objection raised — Accessibility
01/16/2024
Objection raised — Fire_Protection
01/16/2024
Objection raised — Fire_Protection
01/16/2024
Objection raised — Energy
01/16/2024
Objection raised — Zoning
12/20/2023
Objection raised — Zoning
12/11/2023
Filed — ALT-CO - New Building with Existing Elements to Remain
PROPOSED VERTICAL AND HORIZONTAL ENLARGEMENT OF AN EXISTING 2-STORY TWO-FAMILY BUILDING TO A 6-STORY TEN-FAMILY MIXED-USE BUILDING AS PER PLAN. OBTAIN NEW CERTIFICATE OF OCCUPANCY.
B00974718-I1
12/11/2023
Special inspection requirement — Structural Stability – Alterations of existing buildings
12/11/2023
Special inspection requirement — Concrete - Cast-In-Place
12/11/2023
Special inspection requirement — Exterior Insulation and Finish Systems (EIFS)
12/11/2023
Special inspection requirement — Fire-Resistant Penetrations and Joints
12/11/2023
Special inspection requirement — Energy Code Compliance Inspections
12/11/2023
Special inspection requirement — Fire-Resistance Rated Construction
12/11/2023
Special inspection requirement — Air barrier — testing
12/11/2023
Special inspection requirement — Fenestration air leakage
12/11/2023
Special inspection requirement — Insulation placement and R values
12/11/2023
Special inspection requirement — Fenestration and door U-factor and product ratings
12/11/2023
Special inspection requirement — Interior lighting power
12/11/2023
Special inspection requirement — Air barrier - visual inspection
12/11/2023
Special inspection requirement — Exterior lighting power
12/11/2023
Special inspection requirement — Lighting in dwelling units
12/11/2023
Special inspection requirement — Fenestration areas
12/11/2023
Special inspection requirement — Lighting controls
12/11/2023
Special inspection requirement — Metering
12/11/2023
Special inspection requirement — Protection of exposed foundation insulation
05/30/2018
Violation issued (ECB, closed)
Construction
01/30/1997
Violation issued (ECB, closed)
Plumbing
Nothing on file for this building.
Nothing on file for this building.
▾Special Inspection Requirements (DOB NOW) — 18
DateRequirementInspectorRole
12/11/2023Structural Stability – Alterations of existing buildings—special
12/11/2023Concrete - Cast-In-Place—special
12/11/2023Exterior Insulation and Finish Systems (EIFS)—special
12/11/2023Fire-Resistant Penetrations and Joints—special
12/11/2023Energy Code Compliance Inspections—progress
12/11/2023Fire-Resistance Rated Construction—progress
12/11/2023Air barrier — testing —energy_progress
12/11/2023Fenestration air leakage—energy_progress
12/11/2023Insulation placement and R values—energy_progress
12/11/2023Fenestration and door U-factor and product ratings—energy_progress
12/11/2023Interior lighting power—energy_progress
12/11/2023Air barrier - visual inspection—energy_progress
12/11/2023Exterior lighting power—energy_progress
12/11/2023Lighting in dwelling units—energy_progress
12/11/2023Fenestration areas—energy_progress
12/11/2023Lighting controls—energy_progress
12/11/2023Metering—energy_progress
12/11/2023Protection of exposed foundation insulation—energy_progress
▾Documents — 15 on file (BIS + DOB NOW)
▸Plans & Drawings2
▸DOB NOWPlans/Sketch2
08/26/2026B00974718-P1Request digital key ↗
08/14/2026B00974718-I1Request digital key ↗
▸Zoning, Tax Lot & Property Records4
▸DOB NOWZD1: DOB Zoning Diagram2
08/13/2026B00974718-P1Open ↗
08/13/2026B00974718-I1Open ↗
▸DOB NOWZoning Exhibit form (1-5)2
08/13/2026B00974718-I1Open ↗
08/13/2026B00974718-P1Open ↗
▸Seals & Professional Certifications3
▸DOB NOWDPL-1: Design Professional Seal & Signature2
08/26/2026B00974718-P1Open ↗
08/26/2026B00974718-I1Open ↗
▸BISTECHNICAL REPORT STATEMENT OF RESPONSIBILITY1
10/28/2024340913186Open ↗
▸Other Documents6
▸DOB NOWLocal Law 92/94 of 2019 Sustainable Roof Zone2
08/13/2026B00974718-P1Open ↗
08/13/2026B00974718-I1Open ↗
▸DOB NOWProperty Ownership Certification2
08/26/2026B00974718-P1Open ↗
08/14/2026B00974718-I1Open ↗
▸DOB NOWSite Survey: Initial2
08/13/2026B00974718-I1Open ↗
08/13/2026B00974718-P1Open ↗