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Miscellaneous one family
1421 EAST 9 STREET
BROOKLYN · Mapleton-Midwood (West) · BIN 3174015
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1920Year Built
2.5Stories
A9Building Class
R5Zoning
1,368 sfGross Floor Area
1Units
FDNY Report ↗
Miscellaneous one family · 4,000 sf lot · 0.34 FAR built · Flood zone X
Locations of Work
ArchitectureElectricalGeneral
Filed — no permit issued25p · 1 filing · 6 docs
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
07/21/2025$3.2M—— → —$2,339/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
BOHN ARCHITECTURE AND DESIGN107/20/2026
Building Lifecycle
All (27)Filed (1)Objection (18)Special Inspection (8)
09/15/2026
Objection resolved — Resolved
09/11/2026
Objection resolved — Resolved
09/11/2026
Objection resolved — Resolved
09/11/2026
Objection resolved — Resolved
09/11/2026
Objection resolved — Resolved
09/11/2026
Objection resolved — Resolved
09/11/2026
Objection resolved — Resolved
09/11/2026
Objection resolved — Resolved
09/11/2026
Objection resolved — Resolved
07/28/2026
Objection raised — Other
07/28/2026
Objection raised — Structural
07/28/2026
Objection raised — Other
07/28/2026
Objection raised — Admin
07/28/2026
Objection raised — Other
07/28/2026
Objection raised — Other
07/28/2026
Objection raised — Other
07/28/2026
Objection raised — Other
07/28/2026
Objection raised — Other
07/20/2026
Filed — ALT-CO - New Building with Existing Elements to Remain
alteration applicaiton to comply with NB regulation to renovate and enlarge an existing 2 story building into a 3 story building.
B01422623-I1
07/16/2026
Special inspection requirement — Air barrier - visual inspection
07/16/2026
Special inspection requirement — Fenestration and door U-factor and product ratings
07/16/2026
Special inspection requirement — Air barrier — testing
07/16/2026
Special inspection requirement — Insulation placement and R values
07/16/2026
Special inspection requirement — Fenestration areas
07/16/2026
Special inspection requirement — Fenestration air leakage
07/16/2026
Special inspection requirement — Permanent certificate
06/25/2026
Special inspection requirement — Structural Stability – Alterations of existing buildings
Nothing on file for this building.
Nothing on file for this building.
▾Special Inspection Requirements (DOB NOW) — 8
DateRequirementInspectorRole
07/16/2026Air barrier - visual inspection—energy_progress
07/16/2026Fenestration and door U-factor and product ratings—energy_progress
07/16/2026Air barrier — testing —energy_progress
07/16/2026Insulation placement and R values—energy_progress
07/16/2026Fenestration areas—energy_progress
07/16/2026Fenestration air leakage—energy_progress
07/16/2026Permanent certificate—energy_progress
06/25/2026Structural Stability – Alterations of existing buildings—special
▾Documents — 6 on file (BIS + DOB NOW)
▸Plans & Drawings1
▸DOB NOWPlans/Sketch1
08/15/2026B01422623-I1Request digital key ↗
▸Zoning, Tax Lot & Property Records2
▸DOB NOWZD1: DOB Zoning Diagram1
08/15/2026B01422623-I1Open ↗
▸DOB NOWZoning Exhibit form (1-5)1
08/15/2026B01422623-I1Open ↗
▸Seals & Professional Certifications1
▸DOB NOWDPL-1: Design Professional Seal & Signature1
08/16/2026B01422623-I1Open ↗
▸Environmental & Asbestos1
▸DOB NOWDEP ACP-5: Asbestos Assessment Report1
08/15/2026B01422623-I1Open ↗
▸Other Documents1
▸DOB NOWSite Survey: Initial1
08/15/2026B01422623-I1Open ↗