BROOKLYN

Twenty First Street Condominium

334 21ST STREET · BIN 3332166

💬 Discuss this project

—Year Built

—Stories

—Building Class

—Zoning

—Gross Floor Area

—Units

0 Active ViolationsFDNY Report ↗

Flood zone X

Locations of Work

ArchitectureStructuralElectricalMechanicalPlumbingFire ProtectionEquipmentGeneral

Names shown beside floors are taken automatically from the text of filed documents and may be incomplete or wrong.

RoofSprinkler system installation38p · 4 filings · 20 docs

Floor 4Sprinkler system installation13p · 5 filings · 20 docs

Floor 3Sprinkler system installation13p · 5 filings · 20 docs

Floor 2Sprinkler system installation13p · 5 filings · 20 docs

Floor 1Sprinkler system installation13p · 6 filings · 20 docs

CellarSprinkler system installation37p · 4 filings · 20 docs

Site & exteriorHeavy duty sidewalk shed13p · 2 filings · 6 docs

▾Owner History (Filing Record)

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

Owner	Filings	Most Recent
Tower	23	07/08/2026
Greenwood HTS	20	03/21/2026

▾Design Consultants (Architect / Engineer of Record)

Firm	Filings	Most Recent
Twig Consulting Engineers	6	10/03/2022
Paul Perdek, Prof. Engineering	3	08/17/2021
Structural Engineering Systems, PLL	1	09/22/2020
Green Design	2	05/20/2020

▾Filing Representatives (Expediters)

Representative	Filings	Most Recent
AE Design Solution	6	03/21/2026
Advanced Builders Services	4	03/21/2026
Atlantic Building Supply	4	03/21/2026
Z&T Engineering	6	03/21/2026

▾Contractors (License-Anchored)

Firm	Trade	Roles	Most Recent
B Contractors Group	Scaffold	13	07/08/2026
B Contractors Group	General Contractor	8	03/22/2026
Core Scaffold Systems	Scaffold	4	07/08/2026
Prime Piping & Heating	Plumbing	4	07/08/2026
Prime Piping & Heating	Fire Protection	2	07/08/2026
Prime Piping Heating	Plumbing	2	03/22/2026
Amok	Plumbing	1	07/08/2026
Amok	Fire Protection	1	07/08/2026
Alexander Zhitnik	Electrical	1	03/21/2026

▾Special Inspection Agencies

Agency	License #	Filings	Most Recent
Regional Testing	394	6	10/03/2022

Building Lifecycle

All (70)Filed (12)Permit Issued (17)Signed Off (7)Violation (1)Inspection (2)Objection (8)Special Inspection (23)

02/28/2023

Signed off — Alteration

sprinkler application filed in conjunction with NB application

B00396958-I1

02/28/2023

Signed off — Alteration

Plumbing system for new 4 story building

B00396925-I1

02/21/2023

Signed off — Alteration

PROPOSED MECHANICAL DESIGN FOR NEW 4 STORY , 4 APARTMENTS BUILDING IN CONJUNCTION WITH NB APPLICATION 321594878

B00215433-I1

02/10/2023

Inspection — Certified Sprinkler-SP-Fixtures-Finish

Certified

View inspection ↗

02/08/2023

Inspection — Certified Sprinkler-SP-Piping Dry/Wet-Hydrostatic Test

Certified

View inspection ↗

02/02/2023

Special inspection requirement — Fire-Resistant Penetrations and Joints

Paul Raymond

02/02/2023

Special inspection requirement — Sprinkler Systems

Paul Raymond

02/02/2023

Special inspection requirement — Post-installed Anchors

Paul Raymond

01/31/2023

Signed off — Alteration

B00214785-I1

01/26/2023

Objection resolved — Addressed

01/12/2023

Signed off — Alteration

B00294357-I1

01/06/2023

Objection resolved — Addressed

12/27/2022

Objection resolved — Addressed

12/12/2022

Signed off — Alteration

B00431151-I1

12/12/2022

Signed off — Alteration

INSTALLATION OF TEMPORARY PIPE SCAFFOLD AS PER PLANS. NO CHANGE IN USE, EGRESS OR OCCUPANCY.

B00431170-I1

12/06/2022

Objection raised — Structural

12/06/2022

Objection raised — Mechanical

12/06/2022

Objection raised — Fire_Protection

10/03/2022

Filed — Alteration

sprinkler application filed in conjunction with NB application

B00396958-P1

09/29/2022

Permit issued — Structural

B00214785-I1-ST

09/25/2022

Special inspection requirement — Energy Code Compliance Inspections

Paul Raymond

09/25/2022

Special inspection requirement — Fire-Resistant Penetrations and Joints

Paul Raymond

09/22/2022

Objection resolved — Addressed

09/16/2022

Objection raised — Scope

09/14/2022

Filed — Alteration

Plumbing system for new 4 story building

B00396925-P1

07/26/2022

Permit issued — Mechanical Systems

B00215433-I1-MS

06/28/2022

Permit issued — Sprinklers

B00396958-I1-EW-SP

06/28/2022

Permit issued — Plumbing

B00396925-I1-PL

06/01/2022

Permit issued — Construction Fence

B00294357-I1-FN

12/02/2021

Permit issued — Sidewalk Shed

B00431151-I1-SH

12/02/2021

Permit issued — Supported Scaffold

B00431170-I1-SF

09/22/2021

Violation issued (ECB, closed)

Construction

08/17/2021

Filed — Alteration

INSTALLATION OF TEMPORARY PIPE SCAFFOLD AS PER PLANS. NO CHANGE IN USE, EGRESS OR OCCUPANCY.

B00431170-P1

06/30/2021

Permit issued — Plumbing

B00396925-I1-PL

06/30/2021

Permit issued — Sprinklers

B00396958-I1-EW-SP

06/08/2021

Permit issued — Construction Fence

B00294357-I1-FN

05/11/2021

Permit issued — Sprinklers

B00396958-I1-EW-SP

01/15/2021

Permit issued — Plumbing

B00396925-I1-PL

12/09/2020

Permit issued — Sidewalk Shed

B00431151-I1-SH

12/08/2020

Permit issued — Supported Scaffold

B00431170-I1-SF

12/07/2020

Filed — Alteration

B00431151-I1

12/07/2020

Filed — Alteration

INSTALLATION OF TEMPORARY PIPE SCAFFOLD AS PER PLANS. NO CHANGE IN USE, EGRESS OR OCCUPANCY.

B00431170-I1

11/16/2020

Permit issued — Construction Fence

B00294357-I1-FN

11/13/2020

Special inspection requirement — HVAC and service water heating equipment

Paul Raymond

11/13/2020

Special inspection requirement — Electrical energy consumption

Paul Raymond

11/13/2020

Special inspection requirement — HVAC insulation and sealing

Paul Raymond

11/13/2020

Special inspection requirement — Electrical motors

Paul Raymond

11/13/2020

Special inspection requirement — HVAC and service water heating system controls

Paul Raymond

11/13/2020

Special inspection requirement — Maintenance information

Paul Raymond

11/13/2020

Special inspection requirement — Final

Paul Raymond

11/13/2020

Special inspection requirement — Mechanical Systems

Paul Raymond

11/13/2020

Special inspection requirement — Shutoff dampers

Paul Raymond

11/11/2020

Filed — Alteration

PROPOSED MECHANICAL DESIGN FOR NEW 4 STORY , 4 APARTMENTS BUILDING IN CONJUNCTION WITH NB APPLICATION 321594878

B00215433-P1

09/22/2020

Filed — Alteration

B00214785-I1

09/16/2020

Special inspection requirement — Electrical energy consumption

09/16/2020

Special inspection requirement — HVAC and service water heating equipment

09/16/2020

Special inspection requirement — HVAC insulation and sealing

09/16/2020

Special inspection requirement — Electrical motors

09/16/2020

Special inspection requirement — Maintenance information

09/16/2020

Special inspection requirement — HVAC and service water heating system controls

Latest 60 of 70 events.

Permit / Filing Register

Source	Work Type	Status	Applicant	Issued
DOB NOW	Structural	Signed-off	B Contractors Group	09/29/2022
DOB NOW	Mechanical Systems	Signed-off	B Contractors Group	07/26/2022
DOB NOW	Sprinklers	Signed-off	Amb Mechanical	06/28/2022
DOB NOW	Plumbing	Signed-off	Prime Piping & Heating	06/28/2022
DOB NOW	Construction Fence	Signed-off	B Contractors Group	06/01/2022
DOB NOW	Sidewalk Shed	Signed-off	Core Scaffold Systems	12/02/2021
DOB NOW	Supported Scaffold	Signed-off	Core Scaffold Systems	12/02/2021
DOB NOW	Plumbing	Signed-off	Prime Piping & Heating	06/30/2021
DOB NOW	Sprinklers	Signed-off	Amb Mechanical	06/30/2021
DOB NOW	Construction Fence	Signed-off	B Contractors Group	06/08/2021
DOB NOW	Sprinklers	Signed-off	Amok	05/11/2021
DOB NOW	Plumbing	Signed-off	Amok	01/15/2021
DOB NOW	Sidewalk Shed	Signed-off	Core Scaffold Systems	12/09/2020
DOB NOW	Supported Scaffold	Signed-off	Core Scaffold Systems	12/08/2020
DOB NOW	Construction Fence	Signed-off	B Contractors Group	11/16/2020
DOB NOW	Construction Fence	Signed-off	B Contractors Group	06/25/2020
DOB NOW	Construction Fence	Signed-off	B Contractors Group	03/24/2020
BIS	—	ISSUED	B Contractors Group	06/02/2022
BIS	—	ISSUED	B Contractors Group	11/10/2020
BIS	—	ISSUED	B Contractors Group	08/31/2020
BIS	—	ISSUED	B Contractors Group	08/14/2020

2 projects · most recent 02/18/2023

General Wiring

Filed	Status	Contractor	Scope
02/18/2023	Complete	Fried Electric Co	General Wiring
12/03/2020	Complete	V. Vass Electric	—

▾Field Inspections (DOB CAP) — 2

Date	Type	Result	Report
02/10/2023	Certified Sprinkler-SP-Fixtures-Finish	Certified	View ↗
02/08/2023	Certified Sprinkler-SP-Piping Dry/Wet-Hydrostatic Test	Certified	View ↗

▾Special Inspection Requirements (DOB NOW) — 23

Date	Requirement	Inspector	Role
02/02/2023	Fire-Resistant Penetrations and Joints	Paul Raymond	special
02/02/2023	Sprinkler Systems	Paul Raymond	special
02/02/2023	Post-installed Anchors	Paul Raymond	special
09/25/2022	Energy Code Compliance Inspections	Paul Raymond	progress
09/25/2022	Fire-Resistant Penetrations and Joints	Paul Raymond	special
11/13/2020	HVAC and service water heating equipment	Paul Raymond	energy_progress
11/13/2020	Electrical energy consumption	Paul Raymond	energy_progress
11/13/2020	HVAC insulation and sealing	Paul Raymond	energy_progress
11/13/2020	Electrical motors	Paul Raymond	energy_progress
11/13/2020	HVAC and service water heating system controls	Paul Raymond	energy_progress
11/13/2020	Maintenance information	Paul Raymond	energy_progress
11/13/2020	Final	Paul Raymond	progress
11/13/2020	Mechanical Systems	Paul Raymond	special
11/13/2020	Shutoff dampers	Paul Raymond	energy_progress
09/16/2020	Electrical energy consumption	—	energy_progress
09/16/2020	HVAC and service water heating equipment	—	energy_progress
09/16/2020	HVAC insulation and sealing	—	energy_progress
09/16/2020	Electrical motors	—	energy_progress
09/16/2020	Maintenance information	—	energy_progress
09/16/2020	HVAC and service water heating system controls	—	energy_progress
09/16/2020	Shutoff dampers	—	energy_progress
09/16/2020	Mechanical Systems	—	special
09/16/2020	Final	—	progress

▾Documents — 235 on file (BIS + DOB NOW)

▸Plans & Drawings12

▸DOB NOWPlans/Sketch - Sprinkler2

09/02/2026B00396958-I1Request digital key ↗

08/14/2026B00396958-P1Request digital key ↗

▸DOB NOWPlans/Sketch - Construction Fence2

09/02/2026B00294357-I1Request digital key ↗

08/15/2026B00294357-P1Request digital key ↗

▸DOB NOWPlans/Sketch - Supported Scaffold2

09/02/2026B00431170-I1Request digital key ↗

08/15/2026B00431170-P1Request digital key ↗

▸DOB NOWPlans/Sketch - Plumbing2

09/02/2026B00396925-I1Request digital key ↗

08/14/2026B00396925-P1Request digital key ↗

▸DOB NOWPlans/Sketch - Mechanical Systems2

09/02/2026B00215433-I1Request digital key ↗

08/15/2026B00215433-P1Request digital key ↗

▸DOB NOWPlans/Sketch - Sidewalk Shed1

09/02/2026B00431151-I1Request digital key ↗

▸DOB NOWPlans/Sketch - Structural1

09/02/2026B00214785-I1Request digital key ↗

▸Applications & Permits55

▸BISPLAN / WORK APPROVAL APPLICATION36

03/22/2023321594878Open ↗

03/07/2023321594878Open ↗

08/23/2022321594878Open ↗

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▸BISWORK PERMIT APPLICATION14

01/22/2021321594878Open ↗

11/12/2020321594878Open ↗

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▸BISBPP-5 - Authorization to the Department of Transportation4

02/19/2021322021940Open ↗

01/07/2020322021940Open ↗

05/28/2019340658960Open ↗

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▸BISCERTIFICATE OF OCCUPANCY: APPLICATION1

07/29/2022321594878Open ↗

▸Zoning, Tax Lot & Property Records18

▸BISTAX LOT: TENTATIVE LOT NUMBER ISSUED4

07/22/2022322108811Open ↗

01/23/2020321594878Open ↗

01/03/2020321594878Open ↗

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▸BISZONING EXHIBIT I: CERTIFICATION3

07/22/2022322108811Open ↗

01/03/2020321594878Open ↗

06/21/2019321384355Open ↗

▸BISADDRESS: NEW HOUSE NUMBER APPROVED3

01/23/2020321594878Open ↗

01/03/2020321594878Open ↗

05/29/2019321384355Open ↗

▸BISZONING EXHIBIT III:DESC. & OWNRSHP.STMNT3

07/22/2022322108811Open ↗

01/03/2020321594878Open ↗

05/29/2019321384355Open ↗

▸BISZONING DIAGRAM2

02/14/2020321594878Open ↗

01/23/2020321594878Open ↗

▸BISRESTRICTION: RESTRICTIVE DECLARATION1

10/23/2020321594878Open ↗

▸BISVERIFY TAX LOT1

11/22/2022321594878Open ↗

▸BISCO OBJ: VERIFY ADDRESS-TOPO STAMP1

02/06/2023321594878Open ↗

▸Seals & Professional Certifications34

▸DOB NOWDPL-1: Design Professional Seal & Signature12

09/02/2026B00431151-I1Open ↗

09/02/2026B00431170-I1Open ↗

09/02/2026B00431170-P1Open ↗

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▸DOB NOWProgress Inspector Seal & Signature9

08/30/2026B00396925-I1Open ↗

08/24/2026B00215433-I1Open ↗

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▸DOB NOWSpecial Inspector Seal & Signature5

08/30/2026B00396925-I1Open ↗

08/24/2026B00215433-I1Open ↗

08/22/2026B00396958-I1Open ↗

Showing 3 of 5 on file for this type

▸BISTECHNICAL REPORT: RESPONSIBILITY/CERTIFICATION4

09/28/2020321594878Open ↗

Showing 3 of 4 on file for this type

▸BISPROFESSIONAL CERTIFICATION STATEMENT1

12/26/2018340646634Open ↗

▸BISAPPLICANT OWNER SIGNATURE1

01/31/2019340658960Open ↗

▸BISTECHNICAL REPORT STATEMENT OF RESPONSIBILITY1

12/26/2018340646634Open ↗

▸BISREQUIRED ITEMS CHECKLIST FOR PROFESSIONAL CERTIFICATION1

12/26/2018340646634Open ↗

▸Trade Schedules & Equipment5

▸BIS* SEWER CONNECTION: DEP SD1 & SD22

01/23/2020321594878Open ↗

05/29/2019321384355Open ↗

▸BISSCHEDULE B - PLUMBING1

12/26/2018340646634Open ↗

▸BISDETECTOR:SMOKE-CERT. OF INSTALLATION1

02/27/2023321594878Open ↗

▸BISFA - FDNY APPROVAL : FD-FAA1

02/27/2023321594878Open ↗

▸Safety & Tenant Protection9

▸BISSTREET TREE CHECKLIST5

02/08/2021322021940Open ↗

12/08/2020321594878Open ↗

02/22/2020321594878Open ↗

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▸BISSTREET TREES SITE PLAN2

02/08/2021322021940Open ↗

05/14/2019340658960Open ↗

▸BISSTREET TREE SIGNOFF1

09/01/2022321594878Open ↗

▸BISSTREET TREES: RECEIPT OF STREET TREES SITE PLAN1

08/13/2020321594878Open ↗

▸Energy Compliance8

▸BISTECHNICAL REPORT: ENERGY CODE - RESPONSIBILITY4

02/27/2023321594878Open ↗

08/13/2020321594878Open ↗

01/23/2020321594878Open ↗

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▸BISTECHNICAL REPORT: ENERGY CODE PROGRESS INSPS2

09/28/2020321594878Open ↗

▸BISTECHNICAL REPORT STATEMENT OF RESPONSIBILITY FOR ENERGY CODE PROGRESS INSPECTIONS1

12/26/2018340646634Open ↗

▸BISAS-BUILT ENERGY ANALYSIS1

02/27/2023321594878Open ↗

▸Inspections & Test Reports28

▸BISTECHNICAL REPORT: RESPONSIBILITY15

03/01/2023321594878Open ↗

02/27/2023321594878Open ↗

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▸BISTECHNICAL REPORT: CONCRETE/TEST CYLINDER2

03/27/2023321594878Open ↗

09/28/2020321594878Open ↗

▸BISHYDRAULIC FLOW CALCULATIONS2

12/26/2018340646634Open ↗

10/01/2018321384355Open ↗

▸BISHYDRO FLOW TEST LETTER2

05/29/2019321384355Open ↗

12/26/2018340646634Open ↗

▸BISSOIL REPORT2

01/23/2020321594878Open ↗

10/01/2018321384355Open ↗

▸BISTR2: CONCRETE FIELD TESTING TECHNICAL REPORT1

08/13/2020321594878Open ↗

▸BISDEMOLITION (DM) JOB SIGNOFF1

08/13/2020321594878Open ↗

▸BISTECHNICAL REPORT: CONCRETE DESIGN MIX1

09/28/2020321594878Open ↗

▸BISTECHNICAL REPORT: SOIL INSPECTION1

03/27/2023321594878Open ↗

▸BISTR3: CONCRETE DESIGN MIX TECHNICAL REPORT1

08/13/2020321594878Open ↗

▸Approvals, Objections & Sign-offs19

▸BISSCHEDULE A - OCCUPANCY / USE12

03/22/2023321594878Open ↗

08/23/2022321594878Open ↗

08/19/2022321594878Open ↗

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▸BISLETTERS - SUPPORTING DOCUMENTATION6

07/29/2022321594878Open ↗

06/28/2022322108811Open ↗

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▸BISBPP-8 - Request Items for Builders Pavement Plan Signoff1

02/13/2023322021940Open ↗

▸Cost, Insurance & Ownership5

▸BISPROJECT SPECIFIC GENERAL LIABILITY INSURANCE2

11/12/2020321594878Open ↗

10/26/2020321594878Open ↗

▸BISCOST AFFIDAVIT2

02/27/2019321907905Open ↗

12/26/2018340646634Open ↗

▸BISPROJECT-SPECIFIC GL INSURANCE1

09/28/2020321594878Open ↗

▸Filing & Intake Forms31

▸BISADDITIONAL INFORMATION15

03/27/2023321594878Open ↗

03/22/2023321594878Open ↗

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▸BISEFILING COVER SHEET6

07/09/2022322108811Open ↗

01/07/2020322021940Open ↗

01/02/2020321594878Open ↗

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▸BISBOROUGH INTAKE FORM5

01/19/2021340658960Open ↗

08/15/2019321907905Open ↗

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▸BISBPP: CHECKLIST IN LIEU OF PLANS-ALT33

02/19/2021322021940Open ↗

01/07/2020322021940Open ↗

05/22/2019340658960Open ↗

▸BISEFILING JOB APPLICATION COVER SHEET2

01/31/2019340658960Open ↗

12/26/2018340646634Open ↗

▸Other Documents11

▸BISBPP - SUPPORTING DOCUMENTATION5

02/19/2021322021940Open ↗

02/08/2021322021940Open ↗

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▸BISPLOT DIAGRAM3

06/28/2022322108811Open ↗

01/03/2020321594878Open ↗

10/02/2018321384355Open ↗

▸BISRP-6021

05/29/2019321384355Open ↗

▸BISPD-11

05/29/2019321384355Open ↗

▸BISPARKS DEPT PAYMENT OF ONE OFF SITE TREE1

03/27/2023321594878Open ↗