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Over six families without stores
521 WEST 175 STREET
MANHATTAN · Washington Heights (South) · BIN 1063200
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1907Year Built
5Stories
C1Building Class
R7-2Zoning
16,310 sfGross Floor Area
21Units
Rent Stabilized29 Open Violations ▸
Over six families without stores · Owner of record: NZ 175 W. 521, LLC · 4,372 sf lot · 3.73 FAR built · Flood zone X
Locations of Work
Architecture
Floor 51 filing · 7 docs
Floor 4
Floor 3
Floor 2
Floor 1
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
580 LLC203/22/2026
NZ 175 W. 521, LLC103/22/2026
521 ASSOC103/21/2026
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
SEO ARCHITECT PLLC103/22/2023
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
G D BUILDERS & DESIGN INCGeneral Contractor107/08/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
SEO ARCHITECT PLLC5406103/22/2023
Building Lifecycle
All (69)Filed (1)Permit Issued (1)Signed Off (1)Violation (60)Special Inspection (6)
05/23/2026
Violation issued (HPD, closed)
C
05/08/2026
Violation issued (HPD, closed)
C
05/01/2026
Violation issued (HPD, closed)
B
05/01/2026
Violation issued (HPD, closed)
B
05/01/2026
Violation issued (HPD, closed)
B
05/01/2026
Violation issued (HPD, closed)
B
05/01/2026
Violation issued (HPD, open)
C
05/01/2026
Violation issued (HPD, closed)
B
05/01/2026
Violation issued (HPD, closed)
B
05/01/2026
Violation issued (HPD, closed)
B
05/01/2026
Violation issued (HPD, closed)
B
05/01/2026
Violation issued (HPD, closed)
B
05/01/2026
Violation issued (HPD, open)
C
05/01/2026
Violation issued (HPD, closed)
B
05/01/2026
Violation issued (HPD, closed)
B
05/01/2026
Violation issued (HPD, closed)
B
05/01/2026
Violation issued (HPD, closed)
B
05/01/2026
Violation issued (HPD, closed)
B
05/01/2026
Violation issued (HPD, closed)
B
05/01/2026
Violation issued (HPD, closed)
B
05/01/2026
Violation issued (HPD, closed)
C
05/01/2026
Violation issued (HPD, closed)
A
05/01/2026
Violation issued (HPD, open)
A
05/01/2026
Violation issued (HPD, closed)
B
05/01/2026
Violation issued (HPD, closed)
C
05/01/2026
Violation issued (HPD, open)
B
05/01/2026
Violation issued (HPD, closed)
B
05/01/2026
Violation issued (HPD, closed)
B
05/01/2026
Violation issued (HPD, closed)
B
05/01/2026
Violation issued (HPD, closed)
B
05/01/2026
Violation issued (HPD, closed)
B
05/01/2026
Violation issued (HPD, closed)
B
05/01/2026
Violation issued (HPD, closed)
B
08/02/2023
Signed off — Alteration
EXISTING APARTMENTS, UNIT #51(2-BR, 669 SF) AND UNIT #52(2-BR, 687 SF) TO BE CONVERTED INTO A NEW APARTMENT(UNIT#51,3-BR, 798 SF) AND AN APARTMENT(UNIT#52, 2-BR, 558 SF). NO CHANGE IN USE, EGRESS, OR OCCUPANCY.
M00847880-I1
03/27/2023
Permit issued — General Construction
M00847880-I1-GC
03/22/2023
Filed — Alteration
EXISTING APARTMENTS, UNIT #51(2-BR, 669 SF) AND UNIT #52(2-BR, 687 SF) TO BE CONVERTED INTO A NEW APARTMENT(UNIT#51,3-BR, 798 SF) AND AN APARTMENT(UNIT#52, 2-BR, 558 SF). NO CHANGE IN USE, EGRESS, OR OCCUPANCY.
M00847880-I1
03/22/2023
Special inspection requirement — Final
Kyuongmin Seo
03/22/2023
Special inspection requirement — Fire-Resistant Penetrations and Joints
Kyuongmin Seo
03/22/2023
Special inspection requirement — Fire-Resistance Rated Construction
Kyuongmin Seo
03/22/2023
Special inspection requirement — Lighting controls
Kyuongmin Seo
03/22/2023
Special inspection requirement — Interior lighting power
Kyuongmin Seo
03/22/2023
Special inspection requirement — Lighting in dwelling units
Kyuongmin Seo
09/10/2020
Violation issued (HPD, closed)
C
11/08/2019
Violation issued (DOB, closed)
V*-DOB VIOLATION - DISMISSED
04/06/2018
Violation issued (DOB, closed)
V*-DOB VIOLATION - DISMISSED
02/24/2017
Violation issued (DOB, closed)
V*-DOB VIOLATION - DISMISSED
03/15/2016
Violation issued (HPD, closed)
B
03/09/2016
Violation issued (HPD, closed)
C
03/09/2016
Violation issued (HPD, closed)
A
03/09/2016
Violation issued (HPD, closed)
C
03/09/2016
Violation issued (HPD, closed)
B
03/09/2016
Violation issued (HPD, open)
B
03/09/2016
Violation issued (HPD, closed)
A
03/09/2016
Violation issued (HPD, open)
C
03/09/2016
Violation issued (HPD, closed)
A
03/09/2016
Violation issued (HPD, closed)
C
10/02/2015
Violation issued (HPD, closed)
I
11/25/2014
Violation issued (HPD, closed)
A
03/12/2014
Violation issued (HPD, open)
C
03/12/2014
Violation issued (HPD, open)
B
Latest 60 of 69 events.
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWGeneral ConstructionSigned-offG D BUILDERS & DESIGN INC03/27/2023
BISOTISSUEDG D BUILDERS & DESIGN INC11/13/2019
BISFBISSUEDSTEPHEN BRAUN12/06/2007
BISBLISSUEDALFRED ALLEGRETTI10/18/1995
Nothing on file for this building.
▾Special Inspection Requirements (DOB NOW) — 6
DateRequirementInspectorRole
03/22/2023FinalKyuongmin Seoprogress
03/22/2023Fire-Resistant Penetrations and JointsKyuongmin Seospecial
03/22/2023Fire-Resistance Rated ConstructionKyuongmin Seoprogress
03/22/2023Lighting controlsKyuongmin Seoenergy_progress
03/22/2023Interior lighting powerKyuongmin Seoenergy_progress
03/22/2023Lighting in dwelling unitsKyuongmin Seoenergy_progress
▾Documents — 32 on file (BIS + DOB NOW)
▸Plans & Drawings1
▸DOB NOWPlans/Sketch1
08/31/2026M00847880-I1Request digital key ↗
▸Applications & Permits5
▸BISWORK PERMIT APPLICATION3
11/14/2019123789338Open ↗
12/06/2007110030635Open ↗
12/06/2007110030635Open ↗
▸BISPLAN / WORK APPROVAL APPLICATION2
11/14/2019123789338Open ↗
11/26/2007110030635Open ↗
▸Seals & Professional Certifications9
▸DOB NOWProgress Inspector Seal & Signature3
08/27/2026M00847880-I1Open ↗
08/27/2026M00847880-I1Open ↗
08/27/2026M00847880-I1Open ↗
▸BISTECHNICAL REPORT: RESPONSIBILITY/CERTIFICATION2
12/19/2019123789338Open ↗
12/19/2019123789338Open ↗
▸BISPROFESSIONAL CERTIFICATION STATEMENT1
11/14/2019123789338Open ↗
▸BISPROFESSIONAL CERTIFIED CHECKLIST1
11/14/2019123789338Open ↗
▸DOB NOWDPL-1: Design Professional Seal & Signature1
08/31/2026M00847880-I1Open ↗
▸DOB NOWSpecial Inspector Seal & Signature1
08/27/2026M00847880-I1Open ↗
▸Trade Schedules & Equipment1
▸BISSCHEDULE C - HEATING & COMBUSTION EQUIPMENT1
11/26/2007110030635Open ↗
▸Safety & Tenant Protection1
▸BISTenant Protection Plan and Notes1
11/14/2019123789338Open ↗
▸Environmental & Asbestos3
▸BISTHIS IS 'NOT AN ASBESTOS PROJECT'1
11/26/2007110030635Open ↗
▸BISASBESTOS: CERTIFICATION (DEP ACP5)1
11/14/2019123789338Open ↗
▸DOB NOWDEP ACP-5: Asbestos Assessment Report1
08/31/2026M00847880-I1Open ↗
▸Energy Compliance3
▸BISTECHNICAL REPORT: ENERGY CODE PROGRESS INSPS2
12/19/2019123789338Open ↗
12/19/2019123789338Open ↗
▸BISAS-BUILT ENERGY ANALYSIS1
12/19/2019123789338Open ↗
▸Inspections & Test Reports1
▸BISNOTIF.-PROPOSED STEAM/HOT WATER INSPECTION1
11/26/2007110030635Open ↗
▸Approvals, Objections & Sign-offs2
▸BISCERTIFICATE OF OCCUPANCY/LOC: REQUEST1
12/19/2019123789338Open ↗
▸BISADMINISTRATIVE OBJECTIONS1
11/26/2007110030635Open ↗
▸Cost, Insurance & Ownership4
▸BISCOST AFFIDAVIT4
12/19/2019123789338Open ↗
11/14/2019123789338Open ↗
12/06/2007110030635Open ↗
Showing 3 of 4 on file for this type
▸Filing & Intake Forms2
▸BISEFILING COVER SHEET1
11/14/2019123789338Open ↗
▸BISBOROUGH INTAKE FORM1
12/19/2019123789338Open ↗