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BuildNYC
Single or multiple dwelling with stores or offices
506 51ST STREET
BROOKLYN · BIN 3337249
💬 Discuss this project
1931Year Built
3Stories
S9Building Class
C4-3AZoning
9,920 sfGross Floor Area
9Units
Rent Stabilized143 Active Violations 142 unresolved · 1 paperwork only 2 old, status unconfirmed ▸FDNY Report ↗
Single or multiple dwelling with stores or offices · Owner of record: Z & Y · 4,000 sf lot · 2.48 FAR built · Flood zone X
Locations of Work
StructuralElectricalMechanicalEquipmentCivilGeneral
Names shown beside floors are taken automatically from the text of filed documents and may be incomplete or wrong.
Permit Issued — active, not yet Signed-off
Floor 3Z&y LLC1 filing · 3 docs
Floor 2Z&y LLC3p · 3 filings · 9 docs
Floor 1Z&y LLCUnder Construction8p · 4 filings · 11 docs
CellarZ&y LLC3p · 6 filings · 20 docs
Site & exteriorInstallation of temporary sidewalk shed4p · 1 filing · 2 docs
Filed — no permit issuedZ&y LLC4p · 1 filing · 2 docs
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
Z&T Engineering1907/08/2026
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
NYC Special Contractors112/17/2025
Janha Building Ideas207/24/2025
Mje Professional Services105/09/2025
Alma Engineering210/02/2024
Thornton Tomasetti104/19/2024
Paul Perdek, Prof. Engineering307/11/2023
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
Jme Building Consulting603/21/2026
AE Design Solution603/21/2026
SNR Expediting Design203/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
Core Scaffold Systemsspecialty_contractor504/09/2026
Core Scaffold SystemsScaffold507/08/2026
United Five ConstructionGeneral Contractor407/08/2026
Reliable EnterprisesScaffold308/14/2026
Medco Electrical ContractingElectrical103/21/2026
Alpine Electrical ContractorElectrical103/21/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
Environmental Code Consulting5516104/19/2024
Building Lifecycle
All (137)Filed (10)Permit Issued (11)Signed Off (2)Violation (60)Objection (36)Special Inspection (18)
08/13/2026
Permit issued — Sidewalk Shed
B01223072-I1-SH
07/28/2026
Violation issued (ECB, open)
Construction
05/19/2026
Permit issued — Sidewalk Shed
B01223072-I1-SH
03/19/2026
Violation issued (ECB, closed)
Construction
02/25/2026
Violation issued (ECB, closed)
Construction
02/03/2026
Objection resolved — Addressed
02/03/2026
Objection resolved — Addressed
01/14/2026
Objection resolved — Addressed
12/30/2025
Signed off — Alteration
B00893236-I1
12/29/2025
Signed off — Alteration
INSTALLATION OF TEMPORARY SIDEWALK SHED AS PER PLANS. NO CHANGE IN USE, EGRESS OR OCCUPANCY.
B00879590-I1
12/24/2025
Objection resolved — Addressed
12/19/2025
Objection raised — Structural
12/19/2025
Objection raised — Admin
12/19/2025
Objection raised — Structural
12/19/2025
Objection raised — Structural
12/17/2025
Filed — Alteration
Install permanent load bearing structures to compensate for failed column
B01326019-I1
12/17/2025
Special inspection requirement — Tenant Protection Plan Compliance
12/16/2025
Special inspection requirement — Subgrade Inspections
11/28/2025
Special inspection requirement — Footing and Foundation
11/28/2025
Special inspection requirement — Structural Stability – Alterations of existing buildings
11/28/2025
Special inspection requirement — Final
11/28/2025
Special inspection requirement — Structural Steel - Details
11/28/2025
Special inspection requirement — Concrete - Cast-In-Place
10/29/2025
Violation issued (ECB, open)
Construction
10/29/2025
Violation issued (ECB, open)
Construction
10/29/2025
Violation issued (ECB, open)
Construction
10/27/2025
Violation issued (HPD, open)
A
10/27/2025
Violation issued (HPD, closed)
C
10/27/2025
Violation issued (HPD, open)
A
10/27/2025
Violation issued (HPD, closed)
B
10/27/2025
Violation issued (HPD, open)
A
10/27/2025
Violation issued (HPD, open)
A
10/27/2025
Violation issued (HPD, open)
A
10/27/2025
Violation issued (HPD, open)
A
10/24/2025
Violation issued (DOB, open)
V-DOB VIOLATION - ACTIVE
08/20/2025
Permit issued — Structural
B00893236-I1-ST
08/05/2025
Objection raised — Scope
08/05/2025
Objection raised — Structural
08/05/2025
Objection raised — Structural
08/05/2025
Objection raised — Structural
07/24/2025
Filed — Alteration
INSTALLATION OF TEMPORARY SHORING AS PER PLANS FILED HEREWITH. NO CHANGE TO USE, EGRESS OR OCCUPANCY UNDER THIS APPLICATION.
B01226938-I1
07/16/2025
Violation issued (HPD, open)
C
07/16/2025
Violation issued (HPD, open)
A
07/16/2025
Violation issued (HPD, closed)
C
07/16/2025
Violation issued (HPD, open)
B
07/16/2025
Violation issued (HPD, closed)
C
07/16/2025
Violation issued (HPD, open)
B
07/16/2025
Violation issued (HPD, open)
A
07/16/2025
Violation issued (HPD, open)
A
07/16/2025
Violation issued (HPD, open)
A
07/16/2025
Violation issued (HPD, open)
B
07/16/2025
Violation issued (HPD, closed)
C
07/16/2025
Violation issued (HPD, open)
C
07/16/2025
Violation issued (HPD, closed)
C
07/16/2025
Violation issued (HPD, open)
A
07/16/2025
Violation issued (HPD, closed)
C
07/16/2025
Violation issued (HPD, open)
B
07/16/2025
Violation issued (HPD, open)
A
07/16/2025
Violation issued (HPD, open)
A
07/16/2025
Violation issued (HPD, open)
B
Latest 60 of 137 events.
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWSidewalk ShedPermit IssuedReliable Enterprises08/13/2026
DOB NOWSidewalk ShedPermit IssuedReliable Enterprises05/19/2026
DOB NOWStructuralSigned-offCore Scaffold Systems08/20/2025
DOB NOWSidewalk ShedSigned-offCore Scaffold Systems05/20/2025
DOB NOWSidewalk ShedPermit IssuedReliable Enterprises05/09/2025
DOB NOWEarth WorkPermit IssuedUnited Five Construction03/20/2025
DOB NOWEarth WorkPermit IssuedUnited Five Construction09/05/2024
DOB NOWStructuralSigned-offCore Scaffold Systems08/22/2024
DOB NOWSidewalk ShedSigned-offCore Scaffold Systems05/20/2024
DOB NOWStructuralSigned-offCore Scaffold Systems08/23/2023
DOB NOWSidewalk ShedSigned-offCore Scaffold Systems05/25/2023
BISMHISSUEDPlus K Construction10/07/2009
BISBLISSUEDCC Controlled Plumbing Co12/09/2004
BISEQISSUEDCru Mechanical & Heating12/27/2001
BISOTISSUEDCru Mechanical & Heating12/27/2001
2 projects · most recent 05/09/2025
FiledStatusContractorScope
05/09/2025Permit IssuedRichard Neu—
05/25/2023Permit IssuedSolas Electrical—
3 projects · most recent 12/17/2025
Steel Wood Concrete
FiledStatusContractorScope
12/17/2025——Steel
07/24/2025——Wood
10/02/2024——Steel, Concrete
2 projects · most recent 06/15/2025
Fence Sidewalk Shed
FiledStatusContractorScope
06/15/2025——Fence
05/09/2025Permit IssuedReliable EnterprisesSidewalk Shed
▾Special Inspection Requirements (DOB NOW) — 18
DateRequirementInspectorRole
12/17/2025Tenant Protection Plan Compliance—special
12/16/2025Subgrade Inspections—special
11/28/2025Footing and Foundation—progress
11/28/2025Structural Stability – Alterations of existing buildings—special
11/28/2025Final—progress
11/28/2025Structural Steel - Details—special
11/28/2025Concrete - Cast-In-Place—special
05/15/2025Structural Stability – Alterations of existing buildings—special
05/15/2025Final—progress
05/15/2025Tenant Protection Plan Compliance—special
04/19/2024Tenant Protection Plan ComplianceDaniel Karpenspecial
04/18/2024FinalSeyed Ali Hashemi Nezhad Ashrafiprogress
12/22/2023Concrete - Cast-In-Place—special
11/10/2023Structural Stability – Alterations of existing buildings—special
09/26/2023Structural Steel - Details—special
09/26/2023Tenant Protection Plan Compliance—special
09/26/2023Final—progress
06/20/2023FinalPaul Perdekprogress
▾Documents — 56 on file (BIS + DOB NOW)
▸Plans & Drawings10
▸DOB NOWPlans/Sketch10
08/27/2026B00879590-I1Request digital key ↗
08/27/2026B00887187-I1Request digital key ↗
08/27/2026B00893236-I1Request digital key ↗
Showing 3 of 10 on file for this type
▸Applications & Permits9
▸BISPLAN / WORK APPROVAL APPLICATION7
01/04/2024340888454Open ↗
09/08/2023340888454Open ↗
04/20/2010320084859Open ↗
Showing 3 of 7 on file for this type
▸BISWORK PERMIT APPLICATION2
10/08/2009320084859Open ↗
10/08/2009320084859Open ↗
▸Seals & Professional Certifications17
▸DOB NOWDPL-1: Design Professional Seal & Signature10
08/27/2026B00879590-I1Open ↗
08/25/2026B01038139-I1Open ↗
08/23/2026B00939453-I1Open ↗
Showing 3 of 10 on file for this type
▸BISTECHNICAL REPORT: RESPONSIBILITY/CERTIFICATION2
10/20/2010320084859Open ↗
10/08/2009320084859Open ↗
▸DOB NOWProgress Inspector Seal & Signature2
09/01/2026B01038139-I1Open ↗
08/24/2026B00893236-I1Open ↗
▸BISPROFESSIONAL CERTIFIED CHECKLIST1
02/02/2010320084859Open ↗
▸BISPROFESSIONAL CERTIFICATION STATEMENT FORM1
10/08/2009320084859Open ↗
▸DOB NOWSpecial Inspector Seal & Signature1
09/01/2026B01038139-I1Open ↗
▸Trade Schedules & Equipment2
▸BISEQUIPMENT USE APPLICATION/PERMIT1
10/20/2010320084859Open ↗
▸BISEQUIPMENT USE PERMITS1
10/20/2010320084859Open ↗
▸Safety & Tenant Protection1
▸BISSTREET TREE CHECKLIST1
10/08/2009320084859Open ↗
▸Environmental & Asbestos6
▸DOB NOWDEP ACP-5: Asbestos Assessment Report5
08/19/2026B01326019-I1Open ↗
08/15/2026B00939453-I1Open ↗
08/13/2026B00893236-I1Open ↗
Showing 3 of 5 on file for this type
▸BISTHIS IS 'NOT AN ASBESTOS PROJECT'1
10/08/2009320084859Open ↗
▸Approvals, Objections & Sign-offs3
▸BISADMINISTRATIVE OBJECTIONS1
10/08/2009320084859Open ↗
▸BISLETTERS - SUPPORTING DOCUMENTATION1
10/20/2010320084859Open ↗
▸BISCERTIFICATE OF OCCUPANCY/LOC: REQUEST1
10/20/2010320084859Open ↗
▸Cost, Insurance & Ownership2
▸BISCOST AFFIDAVIT2
10/20/2010320084859Open ↗
10/08/2009320084859Open ↗
▸Filing & Intake Forms5
▸BISADDITIONAL INFORMATION4
05/10/2010320084859Open ↗
04/20/2010320084859Open ↗
03/12/2010320084859Open ↗
Showing 3 of 4 on file for this type
▸BISEFILING COVER SHEET1
10/08/2009320084859Open ↗
▸Other Documents1
▸DOB NOWAdjoining Owners Notification1
08/13/2026B01038139-I1Open ↗