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Two family converted from one family
638 ST MARKS AVENUE
BROOKLYN · Crown Heights (North) · BIN 3030937
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1905Year Built
3Stories
B3Building Class
R6AZoning
2,816 sfGross Floor Area
2Units
FDNY Report ↗
Two family converted from one family · 1,568 sf lot · 1.8 FAR built · Flood zone X
Locations of Work
Architecture
Roof1p · 1 filing · 7 docs
Floor 11p · 1 filing · 7 docs
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
12/01/2023$1.7M—— → —$613/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
SQUARE ARCH, LLC209/02/2025
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
KAMTECH RESTORATION CORP403/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
KAMTECH RESTORATION CORPGeneral Contractor203/21/2026
BERGER QUALITY ELEC'L CONElectrical103/22/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
SQ. ARCH, LLC4802209/02/2025
Building Lifecycle
All (4)Filed (2)Permit Issued (1)Signed Off (1)
09/16/2025
Signed off — Alteration
ROOFTOP SOLAR INSTALLATION. NO CHANGE TO USE, OCCUPANCY OR EGRESS.
B01214196-I1
09/02/2025
Filed — Alteration
ROOFTOP SOLAR INSTALLATION. NO CHANGE TO USE, OCCUPANCY OR EGRESS.
B01214196-P1
05/09/2025
Permit issued — Solar
B01214196-I1-SL
04/22/2025
Filed — Alteration
ROOFTOP SOLAR INSTALLATION. NO CHANGE TO USE, OCCUPANCY OR EGRESS.
B01214196-I1
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWSolarSigned-offKAMTECH RESTORATION CORP05/09/2025
BISPLISSUEDCREATIVE PLUMBING IN11/14/2018
BIS—ISSUEDGUSTAVO CORONADO09/24/2010
BIS—ISSUEDGUSTAVO CORONADO06/24/2010
BIS—ISSUEDDADE CONSTRUCTION CO02/06/2001
2 projects · most recent 04/22/2025
General Wiring
FiledStatusContractorScope
04/22/2025CompleteBERGER QUALITY ELEC'L CON—
01/14/2019CompleteWHYNN ELECTRIC CORP.General Wiring
Nothing on file for this building.
▾Documents — 55 on file (BIS + DOB NOW)
▸Plans & Drawings2
▸DOB NOWPlans/Sketch2
08/20/2026B01214196-P1Request digital key ↗
08/20/2026B01214196-I1Request digital key ↗
▸Applications & Permits13
▸BISPLAN / WORK APPROVAL APPLICATION5
07/12/2019320130540Open ↗
08/23/2018321716915Open ↗
04/24/2010320130540Open ↗
Showing 3 of 5 on file for this type
▸BISWORK PERMIT APPLICATION4
11/16/2018321716915Open ↗
11/09/2018321716915Open ↗
09/27/2010320130540Open ↗
Showing 3 of 4 on file for this type
▸BISCERTIFICATE OF OCCUPANCY: APPLICATION3
11/20/2018321716915Open ↗
10/07/2011320130540Open ↗
01/24/2011320130540Open ↗
▸BISPLAN - WORK & PERMITS - SUPPPORTING DOCUMENTATION1
02/08/2019321716915Open ↗
▸Zoning, Tax Lot & Property Records1
▸BISADDRESS: NEW HOUSE NUMBER APPROVED1
08/23/2018321716915Open ↗
▸Seals & Professional Certifications7
▸BISTECHNICAL REPORT: RESPONSIBILITY/CERTIFICATION5
03/28/2019321716915Open ↗
11/09/2018321716915Open ↗
04/07/2010320130540Open ↗
Showing 3 of 5 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature2
08/20/2026B01214196-P1Open ↗
08/20/2026B01214196-I1Open ↗
▸Trade Schedules & Equipment4
▸BISSCHEDULE B - PLUMBING3
04/24/2010320130540Open ↗
04/07/2010320130540Open ↗
02/23/2010320130540Open ↗
▸BISSCHEDULE B - PLUMBING/SPRINKLER/STANDPIPE1
08/23/2018321716915Open ↗
▸Safety & Tenant Protection3
▸BISSTREET TREE CHECKLIST2
08/23/2018321716915Open ↗
02/23/2010320130540Open ↗
▸BISTenant Protection Plan and Notes1
08/23/2018321716915Open ↗
▸Environmental & Asbestos4
▸DOB NOWDEP ACP-5: Asbestos Assessment Report2
08/20/2026B01214196-P1Open ↗
08/20/2026B01214196-I1Open ↗
▸BISASBESTOS: CERTIFICATION (DEP ACP5)1
08/23/2018321716915Open ↗
▸BISASBESTOS EXEMPTION CERTIFICATION LETTER1
02/23/2010320130540Open ↗
▸Energy Compliance1
▸BISTECHNICAL REPORT: ENERGY CODE PROGRESS INSPS1
08/23/2018321716915Open ↗
▸Approvals, Objections & Sign-offs6
▸BISSCHEDULE A - OCCUPANCY / USE3
08/23/2018321716915Open ↗
04/28/2010320130540Open ↗
02/23/2010320130540Open ↗
▸BISADMINISTRATIVE OBJECTIONS1
02/23/2010320130540Open ↗
▸BISCERTIFICATE OF OCCUPANCY/LOC: REQUEST1
04/10/2019321716915Open ↗
▸DOB NOWUtility Company Final Acceptance Letter1
08/13/2026B01214196-I1Open ↗
▸Cost, Insurance & Ownership2
▸BISCOST AFFIDAVIT2
08/23/2018321716915Open ↗
02/23/2010320130540Open ↗
▸Filing & Intake Forms8
▸BISADDITIONAL INFORMATION3
03/08/2019321716915Open ↗
02/14/2019321716915Open ↗
08/23/2018321716915Open ↗
▸BISBOROUGH INTAKE FORM3
07/15/2019320130540Open ↗
04/10/2019321716915Open ↗
11/20/2018321716915Open ↗
▸BISEFILING COVER SHEET2
07/03/2018321716915Open ↗
02/23/2010320130540Open ↗
▸Other Documents4
▸BISPLOT DIAGRAM3
03/28/2019321716915Open ↗
08/23/2018321716915Open ↗
02/23/2010320130540Open ↗
▸BISCPC: HUDSON YARDS FINAL CERTIFICATION1
03/28/2019321716915Open ↗