129 Osborn Street, Brooklyn
Industrial · built c. 1930 · Block 3524, Lot 4.
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Building permits
- New Building — Mid-Rise, filed May 20, 2026, 165 units, 11 stories, described as “Propose a new 11-story mixed-use building (UG II for affordable housing and IIIB for community facility) as per the plan. Obtain the new C of O.”
- Demolition, filed May 27, 2026, estimated cost $20K, described as “Full demolition of 1 story commercial structure”
Property taxes
- Assessment
- $90,000
- 2026–27 tax
- $9,226
- Market value (city estimate)
- $200,000
- Taxable value
- $85,050
- Assessed land
- $17,100
- Assessed improvements
- $72,900
Zoning
R7A: floor area ratio 0.56 built, 4.00 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Apr 22, 2025: $3,500,000, sold with other lots
Open-market sales since 2016, from the Department of Finance’s sales files.
Board and land use applications
- Belmont Osborn Rezoning (City Planning 2020K0390): Zoning map change, Zoning text change, Completed, decided Dec 6, 2023. A zoning map amendment from R6/C1-3 and C4-3 to an R7A/C2-4 and a zoning text amendment to create an MIH area to facilitate two new 7 story developments, totaling appx. 210,000 SF (200 DUs), including appx. 34,000 SF of retail space, is…