Primarily 5-6 family with 1 store or office

231 20 STREET

BROOKLYN · BIN 3009201

💬 Discuss this project

1933Year Built

5Stories

S5Building Class

R6AZoning

9,689 sfGross Floor Area

7Units

1 Open Violation 0 unresolved · 1 paperwork only ▸

Primarily 5-6 family with 1 store or office · Owner of record: PERPETUAL COMPANY LLC · 3,474 sf lot · 2.79 FAR built · Flood zone X

Locations of Work

Fire Protection

Floor 41p · 1 filing · 3 docs

Floor 3

Floor 21p · 1 filing · 3 docs

Floor 1

Mezzanine1p · 1 filing · 3 docs

Cellar1p · 1 filing · 3 docs

▾Owner History (Filing Record)

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

Owner	Filings	Most Recent
PERPETUAL COMPANY	37	07/08/2026
DESIGN TECH CONSTRUCT COR	11	03/22/2026
JOHN J PALANCA.DESIGN TEC	2	03/22/2026
DESIGN TECH CONSTRUC COV	1	03/22/2026
DESIGN TECH CONSTRUCTION	1	03/22/2026
DESIGN TECH CONST COR	2	03/22/2026
J G CONSTRUCTION SRVCS	2	03/21/2026

▾Design Consultants (Architect / Engineer of Record)

Firm	Filings	Most Recent
SYED ENGINEERING, P.C.	1	10/26/2020
GUTH DECONZO CONSULTING ENGINEERS,	1	09/10/2020

▾Filing Representatives (Expediters)

Representative	Filings	Most Recent
WILLIAM VITACCO ASSOCIATES	1	03/21/2026

▾Contractors (License-Anchored)

Firm	Trade	Roles	Most Recent
A + SPRINKLER CORP	Fire Protection	3	07/08/2026

▾Special Inspection Agencies

Agency	License #	Filings	Most Recent
GUTH DECONZO CONSULTING E	1210	1	09/10/2020

Building Lifecycle

All (33)Filed (2)Permit Issued (3)Signed Off (1)Violation (26)Inspection (1)

04/11/2024

Signed off — Alteration

B00371210-I1

01/19/2024

Inspection — Certified Sprinkler-SP-Fixtures-Finish

Certified

View inspection ↗

08/02/2023

Permit issued — Sprinklers

B00371210-I1-EW-SP

02/10/2022

Permit issued — Sprinklers

B00371210-I1-EW-SP

09/15/2021

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

09/15/2021

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

09/09/2021

Violation issued (ECB, closed)

Construction

06/21/2021

Violation issued (ECB, closed)

Construction

06/21/2021

Violation issued (ECB, closed)

Unknown

06/21/2021

Violation issued (ECB, closed)

Construction

06/21/2021

Violation issued (ECB, closed)

Construction

06/14/2021

Permit issued — Sprinklers

B00371210-I1-EW-SP

10/26/2020

Filed — Alteration

INSTALLATION OF PIPE SCAFFOLDING

B00405285-I1

09/16/2020

Violation issued (ECB, closed)

Construction

09/16/2020

Violation issued (ECB, closed)

Construction

09/16/2020

Violation issued (ECB, closed)

Construction

09/16/2020

Violation issued (ECB, closed)

Construction

09/10/2020

Filed — Alteration

B00371210-I1

12/23/2019

Violation issued (ECB, closed)

Construction

12/23/2019

Violation issued (ECB, closed)

Construction

12/11/2019

Violation issued (ECB, closed)

Signs

12/11/2019

Violation issued (ECB, closed)

Construction

10/18/2016

Violation issued (ECB, closed)

Construction

08/24/2016

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

08/24/2016

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

08/24/2016

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

08/24/2016

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

08/24/2016

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

05/26/2016

Violation issued (ECB, open)

Construction

05/26/2016

Violation issued (ECB, closed)

Construction

05/26/2016

Violation issued (ECB, closed)

Construction

05/26/2016

Violation issued (ECB, closed)

Construction

05/26/2016

Violation issued (ECB, closed)

Construction

Permit / Filing Register

Source	Work Type	Status	Applicant	Issued
DOB NOW	Sprinklers	Signed-off	A + SPRINKLER CORP	08/02/2023
DOB NOW	Sprinklers	Signed-off	A + SPRINKLER CORP	02/10/2022
DOB NOW	Sprinklers	Signed-off	A + SPRINKLER CORP	06/14/2021
BIS	PL	ISSUED	A. M. PLUMBING COMPANY	07/13/2023
BIS	—	ISSUED	DESIGN TECH CONSTRUCT COR	06/27/2023
BIS	EQ	ISSUED	DESIGN TECH CONSTRUCT COR	04/19/2021
BIS	—	ISSUED	DESIGN TECH CONSTRUCT COR	03/12/2021
BIS	EQ	ISSUED	DYNAMIC INSTALLATION CORP.	09/25/2020
BIS	EQ	ISSUED	DESIGN TECH CONSTRUCT COR	03/27/2020
BIS	EQ	ISSUED	DESIGN TECH CONSTRUCT COR	03/24/2020
BIS	EQ	ISSUED	DYNAMIC INSTALLATION CORP.	09/04/2019
BIS	EQ	ISSUED	DESIGN TECH CONSTRUCT COR	03/20/2019
BIS	EQ	ISSUED	DESIGN TECH CONSTRUCT COR	03/20/2019
BIS	—	ISSUED	DESIGN TECH CONSTRUCT COR	03/20/2019
BIS	EQ	ISSUED	DYNAMIC INSTALLATION CORP.	08/16/2018
BIS	EQ	ISSUED	DESIGN TECH CONSTRUCT COR	03/21/2018
BIS	—	ISSUED	DESIGN TECH CONSTRUCT COR	03/01/2018
BIS	EQ	ISSUED	DESIGN TECH CONSTRUCT COR	02/28/2018
BIS	EQ	ISSUED	DYNAMIC INSTALLATION CORP.	08/11/2017
BIS	—	ISSUED	DESIGN TECH CONSTRUCT COR	07/21/2016
BIS	EQ	ISSUED	DESIGN TECH CONSTRUCT COR	07/21/2016
BIS	EQ	ISSUED	DESIGN TECH CONSTRUCT COR	05/17/2016
BIS	EQ	ISSUED	DYNAMIC INSTALLATION CORP.	03/30/2016
BIS	EQ	ISSUED	DESIGN TECH CONSTRUCT COR	01/27/2016
BIS	—	ISSUED	DESIGN TECH CONSTRUCT COR	06/22/2015
BIS	—	ISSUED	DESIGN TECH CONSTRUCT COR	01/15/2015
BIS	EQ	ISSUED	DESIGN TECH CONSTRUCT COR	01/14/2015

1 project · most recent 06/14/2024

General Wiring

Filed	Status	Contractor	Scope
06/14/2024	Complete	SUNBIRD ELECTRICAL CONTR	General Wiring

1 project · most recent 10/26/2020

Scaffold

Filed	Status	Contractor	Scope
10/26/2020	—	—	Scaffold

▾Field Inspections (DOB CAP) — 1

Date	Type	Result	Report
01/19/2024	Certified Sprinkler-SP-Fixtures-Finish	Certified	View ↗

▾Documents — 212 on file (BIS + DOB NOW)

▸Plans & Drawings2

▸DOB NOWPlans/Sketch - Sprinkler1

09/02/2026B00371210-I1Request digital key ↗

▸DOB NOWPlans/Sketch - Supported Scaffold1

09/02/2026B00405285-I1Request digital key ↗

▸Applications & Permits62

▸BISWORK PERMIT APPLICATION33

07/14/2023320593354Open ↗

07/07/2023320593354Open ↗

06/29/2023320593354Open ↗

Showing 3 of 33 on file for this type

▸BISPLAN / WORK APPROVAL APPLICATION29

10/24/2025340112318Open ↗

06/26/2025320593354Open ↗

04/01/2025320593354Open ↗

Showing 3 of 29 on file for this type

▸Zoning, Tax Lot & Property Records2

▸BISCO OBJ: VERIFY ADDRESS-TOPO STAMP1

02/19/2024320593354Open ↗

▸BISZoning Diagram (ZD1)1

04/30/2014320593354Open ↗

▸Seals & Professional Certifications15

▸BISTECHNICAL REPORT: RESPONSIBILITY-CERTIFICATION6

04/30/2014320593354Open ↗

Showing 3 of 6 on file for this type

▸BISTECHNICAL REPORT STATEMENT OF RESPONSIBILITY2

06/08/2016340387959Open ↗

03/28/2016340364661Open ↗

▸BISREQUIRED ITEMS CHECKLIST FOR PROFESSIONAL CERTIFICATION2

06/08/2016340387959Open ↗

03/28/2016340364661Open ↗

▸BISPROFESSIONAL CERTIFICATION STATEMENT2

06/08/2016340387959Open ↗

03/28/2016340364661Open ↗

▸DOB NOWDPL-1: Design Professional Seal & Signature2

09/02/2026B00405285-I1Open ↗

08/13/2026B00371210-I1Open ↗

▸BISApplicant / Owner Signature1

02/12/2014340112318Open ↗

▸Trade Schedules & Equipment15

▸BISSCHEDULE B - PLUMBING11

01/04/2024320593354Open ↗

12/29/2023320593354Open ↗

12/13/2023320593354Open ↗

Showing 3 of 11 on file for this type

▸BISHVAC & SERVICE WATER HEATING EQUIPMENT1

12/07/2025320593354Open ↗

▸BISHVAC & SERVICE WATER HEATING SYSTEM CONTROLS1

12/07/2025320593354Open ↗

▸BISSCHEDULE C - HEATING & COMBUSTION EQUIPMENT1

04/24/2014320593354Open ↗

▸BISDETECTOR:SMOKE-CERT. OF INSTALLATION1

09/03/2025320593354Open ↗

▸Safety & Tenant Protection3

▸BISDEMOLITION SUBMITTAL CERTIFICATION FORM1

01/24/2015320593354Open ↗

▸BISSTREET TREES: RECEIPT OF STREET TREES SITE PLAN1

09/24/2014320593354Open ↗

▸BISST-1 Street Tree Checklist1

04/30/2014320593354Open ↗

▸Environmental & Asbestos3

▸BISACP5 ASBESTOS: CERTIFICATION (DEP ACP5)2

04/24/2014320593354Open ↗

Showing 1 of 2 on file for this type

▸DOB NOWDEP ACP-5: Asbestos Assessment Report1

08/13/2026B00371210-I1Open ↗

▸Energy Compliance10

▸BISINTERIOR LIGHTING POWER1

12/07/2025320593354Open ↗

▸BIS* DUCT LEAKAGE TESTING1

12/07/2025320593354Open ↗

▸BISFENESTRATION U-FACTOR & PRODUCT RATING1

12/07/2025320593354Open ↗

▸BISFENESTRATION AREAS1

12/07/2025320593354Open ↗

▸BISTECHNICAL REPORT: ENERGY CODE - RESPONSIBILITY1

09/24/2014320593354Open ↗

▸BISINSULATION PLACEMENT & R VALUES1

12/07/2025320593354Open ↗

▸BISLIGHTING IN DWELLING UNITS1

12/07/2025320593354Open ↗

▸BISENERGY CODE COMPLIANCE INSPECTIONS1

12/07/2025320593354Open ↗

▸BISLIGHTING CONTROLS1

12/07/2025320593354Open ↗

▸BIS* HVAC INSULATION AND SEALING1

12/07/2025320593354Open ↗

▸Inspections & Test Reports21

▸BISTECHNICAL REPORT: RESPONSIBILITY8

05/24/2023340387959Open ↗

11/22/2021320593354Open ↗

Showing 3 of 8 on file for this type

▸BISTECHNICAL REPORT: CONCRETE DESIGN MIX2

01/24/2015320593354Open ↗

▸BISSTRUCTURAL STABILITY - ALTERATIONS OF EXISTING BUILDINGS1

12/07/2025320593354Open ↗

▸BISFIRE-RESISTANT PENETRATIONS AND JOINTS (FIRESTOP)1

12/07/2025320593354Open ↗

▸BISFIRE-RESISTIVE RATED CONSTRUCTION1

12/07/2025320593354Open ↗

▸BIS* EXIT SIGNS1

12/07/2025320593354Open ↗

▸BISSTRUCTURAL STEEL - HIGH STRENGTH BOLTING1

12/07/2025320593354Open ↗

▸BISSTRUCTURAL STEEL - WELDING1

12/07/2025320593354Open ↗

▸BISHYDRO FLOW TEST LETTER1

06/24/2014340112318Open ↗

▸BISSoil Report1

04/30/2014320593354Open ↗

▸BISTECHNICAL REPORT: CONCRETE/TEST CYLINDER1

01/24/2015320593354Open ↗

▸BISTECHNICAL REPORT: SOIL INSPECTION1

04/30/2014320593354Open ↗

▸BISMECHANICAL SYSTEMS1

12/07/2025320593354Open ↗

▸Approvals, Objections & Sign-offs13

▸BISLETTERS - SUPPORTING DOCUMENTATION6

02/17/2021320593354Open ↗

06/16/2016340387959Open ↗

01/24/2015320593354Open ↗

Showing 3 of 6 on file for this type

▸BISSCHEDULE A - OCCUPANCY / USE4

11/05/2020320593354Open ↗

10/26/2020320593354Open ↗

10/07/2020320593354Open ↗

Showing 3 of 4 on file for this type

▸BISCERTIFICATE OF OCCUPANCY/LOC: REQUEST1

05/25/2023340387959Open ↗

▸BISFINAL1

05/24/2023340387959Open ↗

▸BISCCD1-Construction Code Determination1

04/24/2014320593354Open ↗

▸Cost, Insurance & Ownership16

▸BISPROJECT-SPECIFIC GL INSURANCE9

06/29/2023320593354Open ↗

03/16/2021320593354Open ↗

02/17/2021320593354Open ↗

Showing 3 of 9 on file for this type

▸BISCOST AFFIDAVIT4

03/31/2025320593354Open ↗

04/30/2014320593354Open ↗

Showing 3 of 4 on file for this type

▸BISAcord 25 (Acord Certificate of Liability Insurance)2

03/16/2021320593354Open ↗

01/24/2015320593354Open ↗

▸BISCIVIL PENALTY AFFIDAVIT/REQUEST1

02/17/2021320593354Open ↗

▸Filing & Intake Forms29

▸BISBOROUGH INTAKE FORM12

06/29/2023320593354Open ↗

06/28/2023320593354Open ↗

04/20/2021320593354Open ↗

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▸BISADDITIONAL INFORMATION10

05/15/2024320593354Open ↗

Showing 3 of 10 on file for this type

▸BISeFiling Job Application Cover Sheet7

04/24/2014320593354Open ↗

Showing 3 of 7 on file for this type

▸Other Documents9

▸BISEXTERNAL FORMS - SUPPORTING DOCUMENTATION5

07/22/2016320593354Open ↗

03/28/2016340364661Open ↗

07/06/2015320593354Open ↗

Showing 3 of 5 on file for this type

▸BISVESTIBULES1

12/07/2025320593354Open ↗

▸BISMAINTENANCE INFORMATION1

12/07/2025320593354Open ↗

▸BISPERMANENT CERTIFICATE1

12/07/2025320593354Open ↗

▸BISUnknown1

12/23/2020320593354Open ↗