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523 WILLIAM Street, Key West, FL 33040

Church property built in 1909 with 6,903 sq ft of living area on a 0.31-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
$3,399,851
County assessed value (tax roll)
$3,399,851
Living area
6,903 sq ft
Lot size
0.31 acres (13,600 sq ft)
Year built
1909
Land use
Church
FEMA flood zone
Not on file yet
County
Monroe County, FL
Parcel ID
fl-54-0668 25 00008420000000

At a glance

Who owns 523 WILLIAM St?
Monroe County property records list CONGREGATIONAL CHURCH as the owner of record.
What is the county just value of 523 WILLIAM St?
$3,399,851 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 00008420000000 (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