# 73 Martense Street, Brooklyn

Two-family · built c. 1930 · Block 5086, Lot 57.

On Umarelli: https://umarelli.org/nyc/3050860057/73-martense-street

More construction in Flatbush: https://umarelli.org/nyc/brooklyn/flatbush.md

## Building permits

- New Building — Multi-Family, filed Aug 10, 2026, 49 units, 6 stories, described as “New six (6) story, cellar and penthouse, forty nine (49) dwelling unit building.”

## Property taxes

- Assessment: $94,620
- 2026–27 tax: $8,733
- Market value (city estimate): $1,577,000
- Taxable value: $43,965
- Assessed land: $24,900
- Assessed improvements: $69,720

## Zoning

R7A: floor area ratio 0.64 built, 4.00 allowed by base zoning.

## Recent sales

- Dec 16, 2025: $718,289

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

## Flood zone

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

## In the news

[Permits Filed for 73 Martense Street in Flatbush, Brooklyn](https://newyorkyimby.com/2026/08/permits-filed-for-73-martense-street-in-flatbush-brooklyn.html), New York YIMBY, Aug 13, 2026.

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