# 321 Clinton Avenue, Brooklyn

Co-op · 12 units · built c. 1875 · Block 1930, Lot 5.

On Umarelli: https://umarelli.org/nyc/3019300005/321-clinton-avenue

More construction in Clinton Hill: https://umarelli.org/nyc/brooklyn/clinton-hill.md

Every lot on block 1930: https://umarelli.org/nyc/brooklyn/1930.md

## Building permits

- Alteration, filed Oct 28, 2026, estimated cost $4K, described as “Addition of handrail to existing building entry stair. No change in use, occupancy, or egress.”
- Alteration, filed Jul 2, 2026, estimated cost $15K, described as “Install new split a.c, system at APT#9 of an existing 3.5-story building with mechanical work as per plans filed herewith. No change in use, egress or certificate of occupancy.”
- Alteration, filed Feb 29, 2024, estimated cost $19K, described as “Structural repair work for existing exterior steel deck. No change in use, egress and occupancy.”
- Alteration, filed Feb 26, 2024, estimated cost $10K, described as “Install new a.c. System at APT#3 of existing 3.5 story building with mechanical work as per plans filed herewith. No change in use, egress or certificate of occupancy.”
- Alteration, filed Apr 28, 2023, estimated cost $5K, described as “Install new a.c. System at APT#5 of existing 3 story building with mechanical work as per plan filed herewith. No change in use, egress or certificate of occupancy.”
- Alteration, filed Jan 17, 2023, estimated cost $50K, described as “Add Structural support for new door & window openings in existing side & rear walls; Strengthen existing roof structure for proposed modifications to terrace in conjunction with B00530183-no change to use, egress or occupancy under this…”
- Alteration, filed Jun 4, 2021, estimated cost $94K, described as “Herewith file interior renovation of existing apartment. Work type to include installation of non-load bearing partition wall and doors, relocation of bathroom and kitchen. Existing stair to remain. No change in use, egress or occupancy…”

## Property taxes

- Assessment: $1,206,900
- 2026–27 tax: $144,900
- Market value (city estimate): $2,682,000
- Taxable value: $1,163,360
- Assessed land: $405,000
- Assessed improvements: $801,900

## Zoning

R6B: floor area ratio 2.39 built, above the 2.00 base zoning allows, which bonuses, transfers or older rules can permit.

## Recent sales

- Feb 2, 2026: $1,450,000
- Aug 9, 2023: $1,403,000
- Sep 15, 2022: $1,310,000
- May 18, 2022: $1,100,000
- Mar 30, 2021: $1,237,000

Open-market sales since 2016, from the Department of Finance’s sales files.

## Flood zone

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

## Landmarks

Part of Clinton Hill Historic District (Historic District). 32 Landmarks Preservation Commission permits are on file.

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