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18 S 20th Avenue, Jacksonville Beach, FL 32250

Single family property built in 1980 with 1,749 sq ft of living area on a 0.03-acre lot in Jacksonville Beach, Duval 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
$436,849
County assessed value (tax roll)
$345,586
Living area
1,749 sq ft
Lot size
0.03 acres (1,398 sq ft)
Year built
1980
Land use
Single family
FEMA flood zone
Not on file yet
County
Duval County, FL
Parcel ID
fl-26-1793790000R

At a glance

Who owns 18 S 20th Ave?
Duval County property records list GALLAGHER WILLIAM R ET AL as the owner of record.
What is the county just value of 18 S 20th Ave?
$436,849 on the Duval 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-26-1793790000R (Duval 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 S 20th Ave

All 9 properties on S 20th Ave · ZIP 32250 (Jacksonville Beach). 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