← Back
BuildNYC
Condo, residential tower (mixed-use, multi-family elevator) [derived]
427 7TH AVENUE
BROOKLYN · Park Slope · BIN 3250907
💬 Discuss this project
1894Year Built
4Stories
RMBuilding Class
R6AZoning
6,465 sfGross Floor Area
11Units
Rent Stabilized0 Active ViolationsFDNY Report ↗
Condo, residential tower (mixed-use, multi-family elevator) [derived] · 2,446 sf lot · 2.64 FAR built · Flood zone X
Locations of Work
ArchitectureStructural
Names shown beside floors are taken automatically from the text of filed documents and may be incomplete or wrong.
Floor 1CHRM1p · 1 filing · 6 docs
CellarCHRM2p · 1 filing · 6 docs
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
427 7th Avenue Buyers Group303/21/2026
Toast 247203/21/2026
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
Cogen Architects111/28/2025
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
High Quality ConstructionGeneral Contractor203/21/2026
Switch Electric of the FiveElectrical103/21/2026
Mercury Building AssociatesGeneral Contractor107/08/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
Jian Engineering7397111/28/2025
Building Lifecycle
All (31)Filed (1)Permit Issued (2)Violation (23)Special Inspection (5)
05/20/2026
Permit issued — Structural
B01310128-I1-GC-CX
12/23/2025
Permit issued — General Construction
B01310128-I1-GC-CX
11/28/2025
Filed — Alteration
Provide new stairway within existing wood framing with new structural steel supporting beams, columns and concrete footings. Provide new communicating steel stair between cellar and 1st floors, provide new cellar access door at cellar, per drawings.
B01310128-I1
11/28/2025
Special inspection requirement — Tenant Protection Plan Compliance
JIAN DENG
11/10/2025
Special inspection requirement — Structural Steel - Details
JIAN DENG
11/10/2025
Special inspection requirement — Structural Stability – Alterations of existing buildings
JIAN DENG
11/10/2025
Special inspection requirement — Subgrade Inspections
JIAN DENG
10/28/2025
Special inspection requirement — Final
JIAN DENG
06/30/2023
Violation issued (DOB, closed)
V*-DOB VIOLATION - DISMISSED
06/30/2023
Violation issued (DOB, closed)
V*-DOB VIOLATION - DISMISSED
06/20/2023
Violation issued (DOB, closed)
V*-DOB VIOLATION - DISMISSED
06/20/2023
Violation issued (DOB, closed)
V*-DOB VIOLATION - DISMISSED
06/20/2023
Violation issued (DOB, closed)
V*-DOB VIOLATION - DISMISSED
02/18/2022
Violation issued (HPD, closed)
A
04/05/2021
Violation issued (HPD, closed)
A
10/28/2019
Violation issued (HPD, closed)
I
04/06/2018
Violation issued (DOB, closed)
V*-DOB VIOLATION - DISMISSED
02/24/2017
Violation issued (DOB, closed)
V*-DOB VIOLATION - DISMISSED
03/01/2013
Violation issued (DOB, closed)
V*-DOB VIOLATION - DISMISSED
12/13/2011
Violation issued (DOB, closed)
V*-DOB VIOLATION - DISMISSED
12/31/2009
Violation issued (DOB, closed)
V*-DOB VIOLATION - DISMISSED
04/27/2007
Violation issued (ECB, closed)
Boilers
01/19/2007
Violation issued (DOB, closed)
V*-DOB VIOLATION - DISMISSED
01/06/2006
Violation issued (DOB, closed)
V*-DOB VIOLATION - DISMISSED
01/06/2006
Violation issued (DOB, closed)
V*-DOB VIOLATION - DISMISSED
01/31/2005
Violation issued (DOB, closed)
V*-DOB VIOLATION - DISMISSED
06/06/1996
Violation issued (ECB, closed)
Boilers
06/06/1996
Violation issued (ECB, closed)
Boilers
09/13/1995
Violation issued (ECB, closed)
Construction
08/16/1993
Violation issued (DOB, closed)
V-DOB VIOLATION - ACTIVE
08/16/1993
Violation issued (DOB, closed)
V-DOB VIOLATION - ACTIVE
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWStructuralSigned-offMercury Building Associates05/20/2026
DOB NOWGeneral ConstructionSigned-offHigh Quality Construction12/23/2025
BISPLISSUEDNice Plumbing06/05/2017
BISOTISSUEDFinix U.S.A. Construction03/21/2017
BISPLISSUEDQMB Plumbing & Heating06/15/2015
BISOTISSUEDHenrysmith Property Management06/08/2015
BISEQISSUEDHKS Construction05/26/2015
BISOTISSUEDG.M. Construction & Home05/19/2015
BISFBISSUEDBlue Diamond Fuel Oil03/22/2007
BIS—ISSUEDShowman Fabricators01/25/1991
1 project · most recent 11/28/2025
Steel
FiledStatusContractorScope
11/28/2025Signed-offMercury Building AssociatesSteel
1 project · most recent 11/28/2025
Tenant Protection Plan 72 Hour
FiledStatusContractorScope
11/28/2025Signed-offMercury Building AssociatesTenant Protection Plan 72 Hour
▾Special Inspection Requirements (DOB NOW) — 5
DateRequirementInspectorRole
11/28/2025Tenant Protection Plan ComplianceJIAN DENGspecial
11/10/2025Structural Steel - DetailsJIAN DENGspecial
11/10/2025Structural Stability – Alterations of existing buildingsJIAN DENGspecial
11/10/2025Subgrade InspectionsJIAN DENGspecial
10/28/2025FinalJIAN DENGprogress
▾Tenants in the building
TenantSpaceFloorsRenovation projects
CHRMRetailCellar, Floor 1
Project B01310128 Alteration · Permit Entire · 11/28/2025
Names are taken automatically from the text of each project’s filed documents (title blocks and cover sheets) and screened to exclude owners, landlords and designers. They may be incomplete or wrong; check the filing.
▾Documents — 60 on file (BIS + DOB NOW)
▸Plans & Drawings1
▸DOB NOWPlans/Sketch1
08/19/2026B01310128-I1Request digital key ↗
▸Applications & Permits14
▸BISWORK PERMIT APPLICATION6
06/05/2017340482310Open ↗
03/16/2017340482310Open ↗
06/22/2015321103818Open ↗
Showing 3 of 6 on file for this type
▸BISPLAN / WORK APPROVAL APPLICATION5
03/16/2017340482310Open ↗
08/07/2015321103818Open ↗
06/09/2015321103818Open ↗
Showing 3 of 5 on file for this type
▸BISPLAN - WORK & PERMITS - SUPPPORTING DOCUMENTATION2
09/01/2016321103818Open ↗
09/01/2016321103818Open ↗
▸DOB NOWLPC Approval/Permit1
08/13/2026B01310128-I1Open ↗
▸Seals & Professional Certifications15
▸BISPROFESSIONAL CERTIFICATION STATEMENT4
03/16/2017340482310Open ↗
06/09/2015321103818Open ↗
05/19/2015340261941Open ↗
Showing 3 of 4 on file for this type
▸BISREQUIRED ITEMS CHECKLIST FOR PROFESSIONAL CERTIFICATION2
03/16/2017340482310Open ↗
05/19/2015340261941Open ↗
▸BISPROFESSIONAL CERTIFIED CHECKLIST2
06/09/2015321103818Open ↗
05/18/2015321128114Open ↗
▸BISTECHNICAL REPORT STATEMENT OF RESPONSIBILITY2
03/16/2017340482310Open ↗
05/19/2015340261941Open ↗
▸BISTECHNICAL REPORT: RESPONSIBILITY/CERTIFICATION2
06/09/2015321103818Open ↗
05/18/2015321128114Open ↗
▸DOB NOWDPL-1: Design Professional Seal & Signature1
08/13/2026B01310128-I1Open ↗
▸DOB NOWProgress Inspector Seal & Signature1
08/27/2026B01310128-I1Open ↗
▸DOB NOWSpecial Inspector Seal & Signature1
08/27/2026B01310128-I1Open ↗
▸Trade Schedules & Equipment3
▸BISSELF-CERT PLUMBING NOTICE1
08/17/2015321103818Open ↗
▸BISSCHEDULE B - PLUMBING1
03/16/2017340482310Open ↗
▸BISSCHEDULE B - PLUMBING/SPRINKLER/STANDPIPE1
06/09/2015321103818Open ↗
▸Safety & Tenant Protection1
▸BISTENANT PROTECTION PLAN AND NOTES1
03/16/2017340482310Open ↗
▸Environmental & Asbestos4
▸BISASBESTOS: CERTIFICATION (DEP ACP5)3
03/16/2017340482310Open ↗
06/09/2015321103818Open ↗
05/18/2015321128114Open ↗
▸DOB NOWDEP ACP-5: Asbestos Assessment Report1
08/13/2026B01310128-I1Open ↗
▸Energy Compliance4
▸BISTECHNICAL REPORT: ENERGY CODE PROGRESS INSPS2
06/09/2015321103818Open ↗
05/18/2015321128114Open ↗
▸BISTECHNICAL REPORT STATEMENT OF RESPONSIBILITY FOR ENERGY CODE PROGRESS INSPECTIONS1
03/16/2017340482310Open ↗
▸BISTECHNICAL REPORT: ENERGY CODE - RESPONSIBILITY1
03/16/2017340482310Open ↗
▸Inspections & Test Reports2
▸BISTECHNICAL REPORT: RESPONSIBILITY2
03/16/2017340482310Open ↗
05/19/2015340261941Open ↗
▸Approvals, Objections & Sign-offs6
▸BISLANDMARKS APPROVAL3
03/16/2017340482310Open ↗
05/20/2015321128114Open ↗
05/19/2015340261941Open ↗
▸BISLETTERS - SUPPORTING DOCUMENTATION3
06/09/2015321103818Open ↗
05/19/2015340261941Open ↗
05/19/2015340261941Open ↗
▸Cost, Insurance & Ownership5
▸BISCOST AFFIDAVIT3
03/16/2017340482310Open ↗
06/09/2015321103818Open ↗
05/18/2015321128114Open ↗
▸BISCIVIL PENALTY AFFIDAVIT/REQUEST1
06/22/2015321103818Open ↗
▸BISCIVIL PENALTY AFFADAVIT/REQUEST1
03/21/2017340482310Open ↗
▸Filing & Intake Forms4
▸BISEFILING JOB APPLICATION COVER SHEET2
03/16/2017340482310Open ↗
05/19/2015340261941Open ↗
▸BISEFILING COVER SHEET2
06/09/2015321103818Open ↗
05/18/2015321128114Open ↗
▸Other Documents1
▸BISCONSTRUCTION - SUPPORTING DOCUMENTATION1
03/16/2017340482310Open ↗