490 S Mashta Dr, Key Biscayne, FL 33149
490 S Mashta Dr, Key Biscayne, FL 33149: 6,369 sq ft living area, 0.37 acre lot, built 1991, single family, county just value $11,609,868 (tax roll). Miami-Dade County record: parcel map.
- Parcel ID: fl-23-2452050170200
- County: Miami-Dade County, FL
- Land use: Single family
- Lot size: 0.37 acres (16,271 sq ft)
- Living area: 6,369 sq ft
- Year built: 1991
- County just value (tax roll) — not a market value: $11,609,868
- County assessed value (tax roll): $6,760,859
- FEMA flood zone: Not on file yet
Full property report · Open in interactive map
Source: Florida county property appraiser public records and FEMA NFHL; data refreshed Jun 25, 2026. Values are county tax-roll figures, not appraisals.