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20 Island Drive, Key Biscayne, FL 33149

Single family property built in 1973 with 4,996 sq ft of living area on a 0.38-acre lot in Key Biscayne, Miami-Dade County. Facts below come from the county property appraiser's public record.

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County just value (tax roll) — not a market value
$8,283,566
County assessed value (tax roll)
$2,289,250
Living area
4,996 sq ft
Lot size
0.38 acres (16,500 sq ft)
Year built
1973
Land use
Single family
FEMA flood zone
Not on file yet
County
Miami-Dade County, FL
Parcel ID
fl-23-2452050240140

At a glance

Who owns 20 Island Dr?
Miami-Dade County property records list JOSE M MARQUINA &W RANDY L as the owner of record.
What is the county just value of 20 Island Dr?
$8,283,566 on the Miami-Dade County tax roll (as of January 1). Just value is the property appraiser's figure for property taxes — not a market value.
What is the parcel ID?
fl-23-2452050240140 (Miami-Dade County).

Current owner

Owner contact info

Phones, emails and mailing addresses from public Florida records are available to members.

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More on Island Dr

All 63 properties on Island Dr · ZIP 33149 (Key Biscayne). Values are county just values (tax roll), not market values.

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Source: Florida Department of Revenue parcel roll; data refreshed Jun 25, 2026. Values are county tax-roll figures, not appraisals. How to read these values · Data sources