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5109 San Juan Avenue, Jacksonville, FL 32210

Office building (one story) property built in 1946 with 803 sq ft of living area on a 0.19-acre lot in Jacksonville, 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
$133,669
County assessed value (tax roll)
$133,669
Living area
803 sq ft
Lot size
0.19 acres (8,247 sq ft)
Year built
1946
Land use
Office building (one story)
FEMA flood zone
Not on file yet
County
Duval County, FL
Parcel ID
fl-26-0685990000R

At a glance

Who owns 5109 San Juan Ave?
Duval County property records list KNOEPFEL ALVIN E JR as the owner of record.
What is the county just value of 5109 San Juan Ave?
$133,669 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-26-0685990000R (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 San Juan Ave

All 290 properties on San Juan Ave · ZIP 32210 (Jacksonville). 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