Two family converted from one family

412 DEAN STREET

BROOKLYN · Park Slope · BIN 3018426

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1910Year Built

3Stories

B3Building Class

R6BZoning

3,360 sfGross Floor Area

2Units

3 Open Violations ▸FDNY Report ↗

Two family converted from one family · 2,000 sf lot · 1.68 FAR built · Flood zone X

Locations of Work

No floor-level scope or drawing coverage on file for this building.

▾Owner History (Filing Record)

Companies and organizations named on filings. Individual owners are not shown.

Owner	Filings	Most Recent
J G CONSTRUCTION SRVCS	7	03/22/2026

▾Sales History (ACRIS)

Date	Price	Unit	Seller → Buyer	$/sf
04/25/2014	$2.4M	—	Private party → Private party	$699/sf building

▾Design Consultants (Architect / Engineer of Record)

Firm	Filings	Most Recent
RIGID STRUCTURAL DESIGN, LLC	1	07/16/2024
MOHAMMAD AHEAD, PE	1	09/02/2021

▾Filing Representatives (Expediters)

Representative	Filings	Most Recent
ARSENAL BUILDING CONSULTANTS LLC	2	03/21/2026
Rigid Structural Design, LLC	1	03/21/2026

▾Contractors (License-Anchored)

Firm	Trade	Roles	Most Recent
J & G CONSTRUCTION SVCS	General Contractor	6	03/21/2026
INTERSYSTEMS INSTAL S&S	General Contractor	3	03/21/2026

Building Lifecycle

All (10)Filed (2)Permit Issued (3)Signed Off (2)Violation (3)

09/30/2024

Signed off — Alteration

Installation of a temporarily supported scaffold per plan submitted. Work shall comply with 2022 building codes chapter 33. No change in use, egress and/or occupancy with this application.

B01080845-I1

07/17/2024

Permit issued — Supported Scaffold

B01080845-I1-SF

07/16/2024

Filed — Alteration

Installation of a temporarily supported scaffold per plan submitted. Work shall comply with 2022 building codes chapter 33. No change in use, egress and/or occupancy with this application.

B01080845-I1

08/03/2022

Signed off — Alteration

B00586885-I1

09/02/2021

Filed — Alteration

B00586885-I1

09/02/2021

Permit issued — Sidewalk Shed

B00586885-I1-SF

09/02/2021

Permit issued — Supported Scaffold

B00586885-I1-SH

02/20/2004

Violation issued (HPD, open)

02/20/2004

Violation issued (HPD, open)

02/20/2004

Violation issued (HPD, open)

Permit / Filing Register

Source	Work Type	Status	Applicant	Issued
DOB NOW	Supported Scaffold	Signed-off	INTERSYSTEMS INSTAL S&S	07/17/2024
DOB NOW	Sidewalk Shed	Signed-off	J & G CONSTRUCTION SVCS	09/02/2021
DOB NOW	Supported Scaffold	Signed-off	J & G CONSTRUCTION SVCS	09/02/2021
BIS	OT	ISSUED	REDLINE CONSTRUCTION & MA	07/26/2017
BIS	OT	ISSUED	REDLINE CONSTRUCTION & MA	06/10/2015
BIS	OT	ISSUED	REDLINE CONSTRUCTION & MA	05/19/2015
BIS	PL	ISSUED	TRISTAR PLUMBING & HTG IN	04/17/2015
BIS	OT	ISSUED	REDLINE CONSTRUCTION & MA	02/10/2015

1 project · most recent 08/06/2021

Filed	Status	Contractor	Scope
08/06/2021	Permit Issued	RICHARD NEU	—

Nothing on file for this building.

▾Documents — 49 on file (BIS + DOB NOW)

▸Plans & Drawings2

▸DOB NOWPlans/Sketch2

09/01/2026B00586885-I1Request digital key ↗

08/24/2026B01080845-I1Request digital key ↗

▸Applications & Permits14

▸BISPLAN / WORK APPROVAL APPLICATION7

09/28/2023320984271Open ↗

07/08/2016320984271Open ↗

05/03/2016320984271Open ↗

Showing 3 of 7 on file for this type

▸BISWORK PERMIT APPLICATION5

07/26/2017320984271Open ↗

06/12/2015320984271Open ↗

05/19/2015320984271Open ↗

Showing 3 of 5 on file for this type

▸BISPLAN - WORK & PERMITS - SUPPPORTING DOCUMENTATION1

06/21/2016320984271Open ↗

▸BISNon-Directive 14 Construction Sign Off Including Sign Applications1

08/04/2016320984271Open ↗

▸Zoning, Tax Lot & Property Records1

▸BISEASEMENT AND RESTRICTIVE DECLARATIONS - SUPPPORTING DOCUMENTATION1

08/04/2016320984271Open ↗

▸Seals & Professional Certifications6

▸BISTECHNICAL REPORT: RESPONSIBILITY/CERTIFICATION2

10/22/2014320984271Open ↗

02/13/2015320984271Open ↗

▸DOB NOWDPL-1: Design Professional Seal & Signature2

09/01/2026B00586885-I1Open ↗

08/13/2026B01080845-I1Open ↗

▸BISPROFESSIONAL CERTIFICATION STATEMENT1

10/22/2014320984271Open ↗

▸BISPROFESSIONAL CERTIFIED CHECKLIST1

10/22/2014320984271Open ↗

▸Trade Schedules & Equipment8

▸BISSCHEDULE B - PLUMBING/SPRINKLER/STANDPIPE6

05/03/2016320984271Open ↗

08/19/2015320984271Open ↗

07/30/2015320984271Open ↗

Showing 3 of 6 on file for this type

▸BISPLUMBING - SUPPORTING DOCUMENTATION2

05/09/2016320984271Open ↗

04/20/2016320984271Open ↗

▸Safety & Tenant Protection1

▸BISSTREET TREE CHECKLIST1

10/22/2014320984271Open ↗

▸Environmental & Asbestos1

▸BISASBESTOS: CERTIFICATION (DEP ACP5)1

10/22/2014320984271Open ↗

▸Energy Compliance4

▸BISTECHNICAL REPORT: ENERGY CODE - RESPONSIBILITY2

10/05/2023320984271Open ↗

08/10/2023320984271Open ↗

▸BISTECHNICAL REPORT: ENERGY CODE PROGRESS INSPS1

10/22/2014320984271Open ↗

▸BISAS-BUILT ENERGY ANALYSIS1

08/10/2023320984271Open ↗

▸Inspections & Test Reports2

▸BISTECHNICAL REPORT: RESPONSIBILITY2

10/05/2023320984271Open ↗

08/10/2023320984271Open ↗

▸Approvals, Objections & Sign-offs3

▸BISADMINISTRATIVE OBJECTIONS2

10/22/2014320984271Open ↗

▸BISCERTIFICATE OF OCCUPANCY/LOC: REQUEST1

10/10/2023320984271Open ↗

▸Cost, Insurance & Ownership2

▸BISCOST AFFIDAVIT2

08/11/2023320984271Open ↗

10/22/2014320984271Open ↗

▸Filing & Intake Forms5

▸BISADDITIONAL INFORMATION4

06/23/2016320984271Open ↗

08/21/2015320984271Open ↗

07/07/2015320984271Open ↗

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▸BISEFILING COVER SHEET1

10/22/2014320984271Open ↗