# 171 Montrose Avenue, Brooklyn

Apartment building · 10 units · built 2025 · Block 3053, Lot 30.

On Umarelli: https://umarelli.org/nyc/3030530030/171-montrose-avenue

More construction in East Williamsburg: https://umarelli.org/nyc/brooklyn/east-williamsburg.md

## Building permits

- Major Renovation — Conversion, filed Oct 31, 2023, estimated cost $2.3M, 7 units added, 4 stories, described as “Herewith file alteration co to meet n.b. Requirements in order to convert an existing macaroni factory with two dwelling units to a four-story with penthouse nine (9) family dwelling with a community facility in the cellar. And to obtain a…”
- Alteration, filed Jul 27, 2023, estimated cost $1K, described as “Herewith file alteration to erect temporary construction plywood fence. In conjunction with dobnow alteration co application”

## Property taxes

- Assessment: $351,900
- 2026–27 tax: $28,808
- Market value (city estimate): $782,000
- Taxable value: $231,596
- Assessed land: $158,400
- Assessed improvements: $193,500

## Zoning

R6: floor area ratio 3.16 built, above the 2.43 base zoning allows, which bonuses, transfers or older rules can permit.

## Flood zone

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

## In the news

[171 Montrose Avenue Rises Above Street Level in Williamsburg, Brooklyn](https://newyorkyimby.com/2025/03/171-montrose-avenue-rises-above-street-level-in-williamsburg-brooklyn.html), New York YIMBY, Mar 16, 2025.

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