# 578 Ralph Avenue, Brooklyn

Co-op · 17 units · built c. 1922 · Block 1387, Lot 52.

On Umarelli: https://umarelli.org/nyc/3013870052/578-ralph-avenue

More construction in Crown Heights: https://umarelli.org/nyc/brooklyn/crown-heights.md

Every lot on block 1387: https://umarelli.org/nyc/brooklyn/1387.md

## Building permits

- Alteration, filed May 15, 2024, estimated cost $68K, described as “Add separate Navien heater unit on each apartment, all as shown on attached drawings submitted. REVISE DRAWINGS SHOWING AS BUILT CONDITIONS. REVISED DRAWINGS TO SATISFY PLUMBING INSPECTION.”
- Alteration, filed Apr 24, 2023, estimated cost $3K, described as “Install additional plumbing fixture at store at 1st floor, all as shown on drawings.”
- Alteration, filed Sep 29, 2022, estimated cost $8K, described as “Erect new awning to resolve ecb violation 39064309Y. No change in use, egress or certificate of occupancy.”

## Property taxes

- Assessment: $441,900
- 2026–27 tax: $43,186
- Market value (city estimate): $982,000
- Taxable value: $347,181
- Assessed land: $14,850
- Assessed improvements: $427,050

## Tax breaks

- Article XI exemption, through Jun 30, 2029, about $6,386 a year below the full tax.

## Zoning

R6: floor area ratio 3.60 built, above the 2.43 base zoning allows, which bonuses, transfers or older rules can permit.

## Recent sales

- Aug 7, 2025: $162,500
- Mar 28, 2024: $170,000
- May 10, 2022: $125,000
- Apr 8, 2022: $55,000
- Dec 1, 2016: $52,500
- Dec 1, 2016: $62,500

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

## 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