4566 Mainmast Lane, Jacksonville, FL 32277

Single family property built in 1999 with 2,529 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

$350,085

County assessed value (tax roll)

$179,962

Living area

2,529 sq ft

Lot size

0.19 acres (8,257 sq ft)

Year built

1999

Land use

Single family

FEMA flood zone

Not on file yet

County

Duval County, FL

Parcel ID

fl-26-1123324025R

At a glance

Who owns 4566 Mainmast Ln?: Duval County property records list JAPOUR JOHN A as the owner of record.
What is the county just value of 4566 Mainmast Ln?: $350,085 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-26-1123324025R (Duval County).

Current owner

JAPOUR JOHN A

Owner contact info

Phones, emails and mailing addresses from public Florida records are available to members.

See plans

Nearby properties

4558 Mainmast Ln, Jacksonville $301K · built 1999
4565 Mainmast Ln, Jacksonville $344K · built 1998
4559 Mainmast Ln, Jacksonville $273K · built 2000
4574 Royal Port Dr, Jacksonville $343K · built 1998
4568 Royal Port Dr, Jacksonville $319K · built 1999
4580 Royal Port Dr, Jacksonville $301K · built 2001
4546 Mainmast Ln, Jacksonville $341K · built 2001
4561 Royal Port Dr, Jacksonville $327K · built 1999

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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