21 Essex Street, Brooklyn
Two-family · built c. 1910 · Block 3911, Lot 12.
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Building permits
- Alteration, filed Jul 15, 2021, estimated cost $21K, described as “Propose plumbing application in conjunction with application #340752199”
Property taxes
- Assessment
- $49,140
- 2026–27 tax
- $7,478
- Market value (city estimate)
- $819,000
- Taxable value
- $37,686
- Assessed land
- $16,980
- Assessed improvements
- $32,160
Zoning
R4: floor area ratio 1.02 built, above the 1.00 base zoning allows, which bonuses, transfers or older rules can permit.
Recent sales
- Oct 9, 2025: $1,130,000
- Sep 3, 2019: $350,000
Open-market sales since 2016, from the Department of Finance’s sales files.