# 5923 20th Avenue, Brooklyn

Four-family with store · built c. 1931 · Block 5514, Lot 1.

On Umarelli: https://umarelli.org/nyc/3055140001/5923-20-avenue

More construction in Borough Park: https://umarelli.org/nyc/brooklyn/borough-park.md

Every lot on block 5514: https://umarelli.org/nyc/brooklyn/5514.md

## Building permits

- Alteration, filed Jul 28, 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 Jul 27, 2021, estimated cost $10K, described as “Modification to existing gas piping on roof for the replacement of natural gas generator. Generator filed under separate DOB # B00501137. No change in use, egress, or occupancy.”
- Alteration, filed Jul 26, 2021, estimated cost $35K, described as “Replace existing non-emergency generator from existing platform with new non-emergency 50 kw generator on roof. Related plumbing filed under DOB # B00501161. No change in use, egress, or occupancy.”
- Alteration, filed Jul 26, 2021, estimated cost $21K, described as “Modification of existing VERIZON site. Replacement of (6) antennas and (9) RRH units. Installation of (4) microwave dishes.”

## Property taxes

- Assessment: $513,900
- 2026–27 tax: $15,600
- Market value (city estimate): $1,142,000
- Taxable value: $125,410
- Assessed land: $139,050
- Assessed improvements: $374,850

## Zoning

R5: floor area ratio 2.40 built, above the 1.50 base zoning allows, which bonuses, transfers or older rules can permit.

## 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