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646 WILLIAM Street, Key West, FL 33040

Multi-family (fewer than 10 units) property built in 1928 with 2,599 sq ft of living area on a 0.10-acre lot in Key West, Monroe 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
$1,567,206
County assessed value (tax roll)
$1,567,206
Living area
2,599 sq ft
Lot size
0.10 acres (4,370 sq ft)
Year built
1928
Land use
Multi-family (fewer than 10 units)
FEMA flood zone
Not on file yet
County
Monroe County, FL
Parcel ID
fl-54-0668 25 00018810000000

At a glance

Who owns 646 WILLIAM St?
Monroe County property records list VALDES JOSEPH as the owner of record.
What is the county just value of 646 WILLIAM St?
$1,567,206 on the Monroe 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-54-0668 25 00018810000000 (Monroe 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 William St

All 133 properties on William St · ZIP 33040 (Key West). 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