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Miscellaneous one family
421 ALLEN AVENUE
BROOKLYN · BIN 3248517
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1930Year Built
2Stories
A9Building Class
R4Zoning
883 sfGross Floor Area
1Units
3 Open Violations ▸
Miscellaneous one family · 1,818 sf lot · 0.49 FAR built · Flood zone AE
Locations of Work
ArchitectureElectricalPlumbing
Floor 11p · 1 filing · 8 docs
Cellar3p · 1 filing · 8 docs
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
03/25/2021$525K—— → —$595/sf building
08/11/2014$349K—Private party → Private party$395/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
SYED A NAQVI ENGINEERING PLLC207/30/2026
Building Lifecycle
All (23)Filed (2)Violation (3)Objection (15)Special Inspection (3)
08/06/2026
Objection resolved — Addressed
08/03/2026
Objection raised — Other
07/30/2026
Filed — Alteration
Application to legalize cellar partition , three piece bathroom and , remove doors and replace windows.
B01404094-S2
07/30/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
06/20/2026
Objection resolved — Addressed
06/20/2026
Objection resolved — Resolved
06/20/2026
Objection resolved — Addressed
06/20/2026
Objection resolved — Addressed
06/08/2026
Objection raised — Other
06/08/2026
Objection raised — Other
06/08/2026
Objection raised — Other
06/08/2026
Objection raised — Other
06/08/2026
Objection raised — Other
06/08/2026
Objection raised — Other
06/08/2026
Objection raised — Other
06/08/2026
Objection raised — Cost
06/08/2026
Objection raised — Other
05/21/2026
Filed — Alteration
Application to legalize cellar partition , three piece bathroom and , remove doors and replace windows.
B01404094-I1
05/18/2026
Special inspection requirement — Mechanical Systems
05/18/2026
Special inspection requirement — Final
05/07/2026
Violation issued (ECB, open)
Construction
05/07/2026
Violation issued (ECB, open)
Construction
05/07/2026
Violation issued (ECB, open)
Unknown
Nothing on file for this building.
1 project · most recent 07/30/2026
Ventilation Systems
FiledStatusContractorScopeMake / Model / Capacity
07/30/2026——Ventilation Systems
Ventilation
Gree ×1
▾Special Inspection Requirements (DOB NOW) — 3
DateRequirementInspectorRole
07/30/2026Fire-Resistant Penetrations and Joints—special
05/18/2026Mechanical Systems—special
05/18/2026Final—progress
▾Documents — 8 on file (BIS + DOB NOW)
▸Plans & Drawings2
▸DOB NOWPlans/Sketch2
08/15/2026B01404094-S2Request digital key ↗
08/15/2026B01404094-I1Request digital key ↗
▸Zoning, Tax Lot & Property Records2
▸DOB NOWRestrictive Declaration/Easement 12
08/15/2026B01404094-S2Open ↗
08/15/2026B01404094-I1Open ↗
▸Seals & Professional Certifications2
▸DOB NOWDPL-1: Design Professional Seal & Signature2
08/16/2026B01404094-I1Open ↗
08/16/2026B01404094-S2Open ↗
▸Environmental & Asbestos2
▸DOB NOWDEP ACP-5: Asbestos Assessment Report2
08/15/2026B01404094-S2Open ↗
08/15/2026B01404094-I1Open ↗