# 5804 18th Avenue, Brooklyn

Parochial school · built c. 1931 · Block 5504, Lot 37.

On Umarelli: https://umarelli.org/nyc/3055040037/5804-18-avenue

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

Every lot on block 5504: https://umarelli.org/nyc/brooklyn/5504.md

## Building permits

- Alteration, filed Jun 11, 2026, described as “Installation of temporary sidewalk shed as per plans. No change in use, egress or occupancy.”
- Alteration, filed Jun 11, 2026, described as “Installation of temporary pipe scaffold as per plans. No change in use, egress or occupancy.”
- Alteration, filed Jan 22, 2026, estimated cost $176K, described as “Reface exterior wall with stucco and replace windows as per plan. No change in use, egress or occupancy.”

## Property taxes

- Assessment: $758,700
- Market value (city estimate): $1,686,000
- Taxable value: $0
- Assessed land: $67,500
- Assessed improvements: $691,200

## Tax breaks

- Nonprofit exemption (religious school), with no end date, about $82,304 a year below the full tax.

## Zoning

R5: floor area ratio 2.20 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