4001 18th Avenue, Brooklyn
Public school · built c. 1933 · Block 5416, Lot 48.
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.