300 Harbor Court, Key Biscayne, FL 33149

Single family property built in 1964 with 2,172 sq ft of living area on a 0.19-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

$2,473,034

County assessed value (tax roll)

$741,510

Living area

2,172 sq ft

Lot size

0.19 acres (8,406 sq ft)

Year built

1964

Land use

Single family

FEMA flood zone

Not on file yet

County

Miami-Dade County, FL

Parcel ID

fl-23-2442320063530

At a glance

Who owns 300 Harbor Ct?: Miami-Dade County property records list SANDRA A BLOCK as the owner of record.
What is the county just value of 300 Harbor Ct?: $2,473,034 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-23-2442320063530 (Miami-Dade County).

Current owner

SANDRA A BLOCK

Owner contact info

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

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Nearby properties

310 Harbor Ct, Key Biscayne $2.2M · built 1958
283 Harbor Ct, Key Biscayne $5M · built 2012
275 Harbor Dr, Key Biscayne $2.6M · built 1958
305 Harbor Ct, Key Biscayne $2.8M · built 1964
291 Harbor Ct, Key Biscayne $2.2M · built 1963
265 Harbor Dr, Key Biscayne $3.2M · built 2015
299 Harbor Ct, Key Biscayne $2.6M · built 1957
285 Harbor Dr, Key Biscayne $2.5M · built 1988

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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