# 21 Essex Street, Brooklyn

Two-family · built c. 1910 · Block 3911, Lot 12.

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On Umarelli: https://umarelli.org/nyc/3039110012/21-essex-street

More construction in Cypress Hills: https://umarelli.org/nyc/brooklyn/cypress-hills.md

Every lot on block 3911: https://umarelli.org/nyc/brooklyn/3911.md

## 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.

From New York City and Jersey City public records, refreshed within a day of each release. Sources: https://umarelli.org/sources. Methodology and corrections: https://umarelli.org/methodology