# 150-23 21st Avenue, Queens

Two-family · built 1955 · Block 4690, Lot 14.

On Umarelli: https://umarelli.org/nyc/4046900014/150-23-21-avenue

More construction in Whitestone: https://umarelli.org/nyc/queens/whitestone.md

## Building permits

- Alteration, filed Apr 24, 2026, estimated cost $48K, described as “Installation of Solar panels on existing roof structure, No change in use, egress or occupancy.”
- Alteration, filed Jun 3, 2025, estimated cost $1K, described as “Installation of construction fence as per the plans filed herewith. No change in use, occupancy or egress.”
- Major Renovation — Enlargement, filed May 2, 2025, estimated cost $1.5M, 1 unit added, 2 stories, described as “Propose horizontal and vertical enlargement for a two-family detached residence. Obtain a new c of o.”
- Demolition, filed Apr 18, 2025, estimated cost $5K, described as “Full demolition of 1-story garage.”

## Property taxes

- Assessment: $41,220
- 2026–27 tax: $8,179
- Market value (city estimate): $687,000
- Taxable value: $41,220
- Assessed land: $15,840
- Assessed improvements: $25,380

## Zoning

R3A: floor area ratio 0.75 built, 0.75 allowed by base zoning.

## Recent sales

- Apr 1, 2025: $1,355,000

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

## Flood zone

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

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