# 421 1st Street, Brooklyn

Two-family · built c. 1901 · Block 966, Lot 65.

On Umarelli: https://umarelli.org/nyc/3009660065/421-1-street

More construction in Park Slope: https://umarelli.org/nyc/brooklyn/park-slope.md

Every lot on block 966: https://umarelli.org/nyc/brooklyn/966.md

## Building permits

- Alteration, filed Oct 25, 2024, estimated cost $91K, described as “Renovate existing Apt #1 at basement level, new interior non load bearing partitions&finishes, enlarged masonry opening at rear wall, enlarged door&window, new bluestone patio at rear yard, installation of new a/c system. Pl to be filed as…”

## Property taxes

- Assessment: $281,100
- 2026–27 tax: $10,824
- Market value (city estimate): $4,685,000
- Taxable value: $53,741
- Assessed land: $43,740
- Assessed improvements: $237,360

## Zoning

R6B: floor area ratio 1.60 built, 2.00 allowed by base zoning.

## Flood zone

Current FEMA flood map: zone X, minimal flood hazard.

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