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Large suburban residence
5221 20 AVENUE
BROOKLYN · BIN 3130105
💬 Discuss this project
1925Year Built
3Stories
A3Building Class
R5Zoning
1,800 sfGross Floor Area
1Units
0 Open ViolationsFDNY Report ↗
Large suburban residence · 5,000 sf lot · 0.36 FAR built · Flood zone X
Locations of Work
ArchitectureStructuralMechanicalFire Protection
Roof5p · 2 filings · 20 docs
Bulkhead1p · 1 filing · 20 docs
Floor 33p · 1 filing · 20 docs
Floor 26p · 2 filings · 20 docs
Floor 14p · 2 filings · 20 docs
Cellar8p · 2 filings · 20 docs
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
01/29/2014$1.5M—Private party → Private party$833/sf building
▾Design Consultants (Architect / Engineer of Record)
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
4444 PPPP CORP1803/21/2026
ASAP ASSOCIATES CORP203/21/2026
BINYAN EXPEDITING403/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
SEAMLESS BUILDERS INCGeneral Contractor303/21/2026
CITYSCAPE BUILDERS LLCGeneral Contractor104/09/2026
N TECH DESIGN OF AMERICAGeneral Contractor104/09/2026
Building Lifecycle
All (131)Filed (18)Permit Issued (2)Signed Off (2)Violation (5)Inspection (1)Objection (73)Special Inspection (30)
07/21/2026
Objection resolved — Addressed
07/16/2026
Objection resolved — Resolved
07/10/2026
Objection raised — Other
07/10/2026
Objection raised — Other
07/10/2026
Objection raised — Other
07/10/2026
Objection raised — Other
07/10/2026
Objection raised — Other
07/10/2026
Objection raised — Other
07/10/2026
Objection raised — Other
07/09/2026
Objection raised — Other
07/03/2026
Filed — New Building
Fire Sprinkler plans filed herewith.
B01371735-S4
07/03/2026
Objection resolved — Addressed
07/03/2026
Special inspection requirement — Structural Steel - Details
07/03/2026
Special inspection requirement — Structural Steel - Welding
07/03/2026
Special inspection requirement — Structural Steel - High Strength Bolting
07/03/2026
Special inspection requirement — Concrete - Cast-In-Place
06/29/2026
Objection raised — Other
06/24/2026
Filed — New Building
Fire Sprinkler plans filed herewith.
B01371735-S5
06/24/2026
Objection raised — Other
06/23/2026
Filed — New Building
Fire Sprinkler plans filed herewith.
B01371735-S2
06/23/2026
Filed — New Building
Fire Sprinkler plans filed herewith.
B01371735-S3
06/23/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
06/15/2026
Special inspection requirement — Excavations - Sheeting, Shoring, and Bracing
06/15/2026
Special inspection requirement — Subgrade Inspections
06/05/2026
Filed — New Building
Fire Sprinkler plans filed herewith.
B01371735-S1
05/26/2026
Special inspection requirement — Final
05/26/2026
Special inspection requirement — Sprinkler Systems
04/14/2026
Objection resolved — Resolved
04/14/2026
Objection resolved — Resolved
04/14/2026
Objection resolved — Resolved
04/14/2026
Objection resolved — Resolved
04/14/2026
Objection resolved — Resolved
04/14/2026
Objection resolved — Resolved
04/14/2026
Objection resolved — Resolved
04/14/2026
Objection resolved — Resolved
04/14/2026
Objection resolved — Resolved
04/14/2026
Objection resolved — Resolved
04/14/2026
Objection resolved — Resolved
04/14/2026
Objection resolved — Resolved
04/14/2026
Objection resolved — Resolved
04/14/2026
Objection resolved — Resolved
04/14/2026
Objection resolved — Resolved
04/14/2026
Objection resolved — Resolved
04/14/2026
Objection resolved — Resolved
04/14/2026
Objection resolved — Resolved
04/14/2026
Objection resolved — Resolved
04/14/2026
Objection resolved — Resolved
04/14/2026
Objection resolved — Resolved
04/14/2026
Objection resolved — Resolved
04/14/2026
Objection resolved — Resolved
04/14/2026
Objection resolved — Resolved
04/14/2026
Objection resolved — Resolved
04/03/2026
Objection raised — Zoning
04/02/2026
Objection raised — Admin
04/02/2026
Objection raised — Structural
04/02/2026
Objection raised — Other
04/02/2026
Objection raised — Fire_Protection
04/02/2026
Objection raised — Other
04/02/2026
Objection raised — Other
04/02/2026
Objection raised — Zoning
Latest 60 of 131 events.
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWFull DemolitionSigned-offN TECH DESIGN OF AMERICA03/18/2026
DOB NOWGeneral ConstructionSigned-offSEAMLESS BUILDERS INC08/25/2022
2 projects · most recent 07/03/2026
Gas Storm Water/Sanitary
FiledStatusContractorScope
07/03/2026——Gas, Storm, Water/Sanitary
05/02/2024——Gas, Storm, Water/Sanitary
2 projects · most recent 07/03/2026
Steel Concrete
FiledStatusContractorScope
07/03/2026——Steel, Concrete
05/02/2024——2 scope_items
1 project · most recent 04/04/2024
Fence
FiledStatusContractorScope
04/04/2024——Fence
▾Field Inspections (DOB CAP) — 1
DateTypeResultReport
09/06/2022Pass-Final General Construction Non-Directive 14PassView ↗
▾Special Inspection Requirements (DOB NOW) — 53
DateRequirementInspectorRole
07/03/2026Structural Steel - Details—special
07/03/2026Structural Steel - Welding—special
07/03/2026Structural Steel - High Strength Bolting—special
07/03/2026Concrete - Cast-In-Place—special
06/23/2026Fire-Resistant Penetrations and Joints—special
06/15/2026Excavations - Sheeting, Shoring, and Bracing—special
06/15/2026Subgrade Inspections—special
05/26/2026Final—progress
05/26/2026Sprinkler Systems—special
05/22/2024Electric vehicle service equipment requirements—energy_progress
05/22/2024Insulation placement and R values—energy_progress
05/22/2024Fenestration air leakage—energy_progress
05/22/2024Post-installed Anchors—special
05/22/2024Maintenance information—energy_progress
05/22/2024Interior lighting power—energy_progress
05/22/2024Permanent certificate—energy_progress
05/22/2024Air barrier — testing —energy_progress
05/22/2024Fenestration and door U-factor and product ratings—energy_progress
05/22/2024Air barrier - visual inspection—energy_progress
05/22/2024Fire-Resistant Penetrations and Joints—special
05/22/2024Masonry—special
05/22/2024Structural Stability – Alterations of existing buildings—special
05/22/2024Chimneys and vents—special
05/22/2024Subgrade Inspections—special
05/22/2024Energy Code Compliance Inspections—progress
Latest 25 of 53.
▾Documents — 78 on file (BIS + DOB NOW)
▸Plans & Drawings18
▸DOB NOWPlans/Sketch18
08/28/2026B00781616-I1Request digital key ↗
08/26/2026B00955131-S1Request digital key ↗
08/26/2026B00955131-S3Request digital key ↗
Showing 3 of 18 on file for this type
▸Applications & Permits1
▸BISBPP-5 - Authorization to the Department of Transportation1
08/20/2024340906997Open ↗
▸Zoning, Tax Lot & Property Records5
▸DOB NOWZD1: DOB Zoning Diagram3
08/16/2026B01371735-I1Open ↗
08/13/2026B00955131-P1Open ↗
08/13/2026B00955131-I1Open ↗
▸DOB NOWHouse Number Verification: TOPO Stamp2
08/16/2026B01371735-I1Open ↗
08/13/2026B00955131-I1Open ↗
▸Seals & Professional Certifications19
▸DOB NOWDPL-1: Design Professional Seal & Signature17
08/28/2026B00781616-I1Open ↗
08/26/2026B00955131-I1Open ↗
08/26/2026B00955131-S1Open ↗
Showing 3 of 17 on file for this type
▸BISAPPLICANT OWNER SIGNATURE1
08/20/2024340906997Open ↗
▸DOB NOWCONTRACTOR SEAL & SIGNATURE1
08/19/2026B01323830-I1Open ↗
▸Trade Schedules & Equipment6
▸DOB NOWDEP: Sewer Certification (Sanitary/Storm)2
08/13/2026B00955131-I1Open ↗
08/13/2026B00955131-P1Open ↗
▸DOB NOWWater Cut-Off1
08/13/2026B01323830-I1Open ↗
▸DOB NOWGas Cut-Off1
08/13/2026B01323830-I1Open ↗
▸DOB NOWSewer Cut-Off1
08/13/2026B01323830-I1Open ↗
▸DOB NOWElectric Cut-Off1
08/13/2026B01323830-I1Open ↗
▸Safety & Tenant Protection4
▸BISBPP: STREET TREES SITE PLAN1
08/20/2024340906997Open ↗
▸BISSTREET TREE CHECKLIST1
08/20/2024340906997Open ↗
▸DOB NOWStreet Tree Checklist1
08/16/2026B01371735-I1Open ↗
▸DOB NOWParks Department Acknowledgment Letter for Street Trees Plan1
08/13/2026B00955131-I1Open ↗
▸Environmental & Asbestos10
▸DOB NOWDEP ACP-5: Asbestos Assessment Report9
08/28/2026B00781616-I1Open ↗
08/26/2026B00955131-I1Open ↗
08/26/2026B00955131-S2Open ↗
Showing 3 of 9 on file for this type
▸DOB NOWRodent Control1
08/13/2026B01323830-I1Open ↗
▸Inspections & Test Reports1
▸DOB NOWGeotechnical Report (BC 1803.6)1
08/13/2026B00955131-S2Open ↗
▸Filing & Intake Forms1
▸BISEFILING JOB APPLICATION COVER SHEET1
08/20/2024340906997Open ↗
▸Other Documents13
▸DOB NOWProperty Ownership Certification4
08/26/2026B00955131-I1Open ↗
08/19/2026B01323830-I1Open ↗
08/16/2026B01371735-I1Open ↗
Showing 3 of 4 on file for this type
▸DOB NOWLocal Law 92/94 of 2019 Sustainable Roof Zone3
08/16/2026B01371735-I1Open ↗
08/13/2026B00955131-P1Open ↗
08/13/2026B00955131-I1Open ↗
▸DOB NOWSite Survey: Initial2
08/13/2026B00955131-P1Open ↗
08/13/2026B00955131-I1Open ↗
▸BISBPP - SUPPORTING DOCUMENTATION1
08/20/2024340906997Open ↗
▸DOB NOWStructure Photographs1
08/13/2026B01323830-I1Open ↗
▸DOB NOWCommunity Board Notification1
08/19/2026B01323830-I1Open ↗
▸DOB NOWFull Demo: 10-Day Notice1
08/19/2026B01323830-I1Open ↗