# 33 Bay 20th Street, Brooklyn

Apartment building · 5 units · built 2025 · Block 6371, Lot 35.

On Umarelli: https://umarelli.org/nyc/3063710035/33-bay-20-street

More construction in Bath Beach: https://umarelli.org/nyc/brooklyn/bath-beach.md

## Building permits

- New Building — Multi-Family, filed Nov 5, 2021, estimated cost $924K, 5 units, 4 stories, described as “New 4 story residential building with five dwelling units.”
- Alteration, filed Apr 4, 2026, estimated cost $9K, described as “Installation of 300PSF sidewalk shed as per plans. All equipment shall comply with ch #33 of the NYC code 2022. No change in use, occupancy or egress under this application.”
- Alteration, filed Mar 4, 2026, estimated cost $30K, described as “Installation of pipe scaffolding and needle beam as per plans. All equipment shall comply with chapter # 33 of the 2022 code. No change in use occupancy or egress under this application.”
- Alteration, filed Oct 30, 2025, estimated cost $5K, described as “Installation of temporary construction fence as per plan.”
- Alteration, filed Jul 17, 2022, estimated cost $1K, described as “Construction wood fence filed for 40.00 linear feet.”

## Property taxes

- Assessment: $226,350
- 2026–27 tax: $3,119
- Market value (city estimate): $503,000
- Taxable value: $25,078
- Assessed land: $226,350

## Zoning

R5: floor area ratio 1.87 built, above the 1.50 base zoning allows, which bonuses, transfers or older rules can permit.

## Recent sales

- Jan 13, 2021: $1,060,000

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