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4523 Mainmast Lane, Jacksonville, FL 32277

Single family property built in 2000 with 2,502 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
$356,437
County assessed value (tax roll)
$356,437
Living area
2,502 sq ft
Lot size
0.19 acres (8,359 sq ft)
Year built
2000
Land use
Single family
FEMA flood zone
Not on file yet
County
Duval County, FL
Parcel ID
fl-26-1123324335R

At a glance

Who owns 4523 Mainmast Ln?
Duval County property records list THOMAS JOHN C as the owner of record.
What is the county just value of 4523 Mainmast Ln?
$356,437 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-26-1123324335R (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 Mainmast Ln

All 16 properties on Mainmast Ln · ZIP 32277 (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