# 4001 18th Avenue, Brooklyn

Public school · built c. 1933 · Block 5416, Lot 48.

On Umarelli: https://umarelli.org/nyc/3054160048/211-webster-avenue

More construction in Ocean Parkway: https://umarelli.org/nyc/brooklyn/ocean-parkway.md

## Building permits

- New Building — Non-residential, filed Nov 4, 2026, 5 stories, described as “Filing herewith new building as per plans.”
- Alteration, filed Jul 20, 2026, estimated cost $63K, described as “Herebwith filing for early work - removal of existing temporary classroom building in school playyard as per plans. No change of use. Egress, or occupancy.”
- Alteration, filed Jul 17, 2026, estimated cost $56K, described as “Herewith filing for removal of metal canopy as per plans. No change of use. Egress, or occupancy.”
- Alteration, filed Jul 17, 2026, estimated cost $120K, described as “Herewith filing for removals in main building as per plans. No change of use. Egress, or occupancy.”
- Alteration, filed Jul 16, 2026, estimated cost $830K, described as “Herewith filing earthwork consisting of existing site feature removals, pavement placement and backfill for site stabilization as per plans. No change of use. Egress, or occupancy.”
- Alteration, filed Jul 16, 2026, estimated cost $2.4M, described as “Herewith filing for soe removals as per plans. No change of use. Egress, or occupancy.”

## Property taxes

- Assessment: $3,754,800
- Market value (city estimate): $8,344,000
- Taxable value: $0
- Assessed land: $810,000
- Assessed improvements: $2,944,800

## Zoning

R6A (part of the lot is R5): floor area ratio 0.77 built, 3.00 allowed by base zoning.

## 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