# 174 Martense Street, Brooklyn

Two-family · built c. 1915 · Block 5090, Lot 41.

On Umarelli: https://umarelli.org/nyc/3050900041/174-martense-street

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

## Building permits

- Alteration, filed Feb 2, 2026, estimated cost $5K, described as “Application filed herewith for installation of a temporary construction fence. No change in occupancy or egress”
- Major Renovation — Enlargement, filed Sep 24, 2024, estimated cost $2.2M, 10 units added, 4 stories, described as “Proposed alteration type 1 to existing 2 story + cellar building. Vertical and horizontal enlargement. Proposed 4 story + cellar + penthouse residential use building.”

## Property taxes

- Assessment: $65,160
- 2026–27 tax: $7,763
- Market value (city estimate): $1,086,000
- Taxable value: $39,124
- Assessed land: $21,660
- Assessed improvements: $43,500

## Zoning

R7-1: floor area ratio 0.97 built, 3.44 allowed by base zoning.

## Recent sales

- Sep 11, 2024: $1,250,000
- Sep 21, 2018: $600,000

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

## Flood zone

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

## In the news

[Permits Filed for 174 Martense Street in Flatbush, Brooklyn](https://newyorkyimby.com/2024/09/permits-filed-for-174-martense-street-in-flatbush-brooklyn.html), New York YIMBY, Sep 26, 2024.

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