21005 3RD Avenue, Cudjoe Key, FL 33042
Single family property built in 1991 with 1,503 sq ft of living area on a 0.20-acre lot in Cudjoe Key, Monroe County. Facts below come from the county property appraiser's public record.
County just value (tax roll) — not a market value
$704,511
County assessed value (tax roll)
$539,047
Living area
1,503 sq ft
Lot size
0.20 acres (8,626 sq ft)
Year built
1991
Land use
Single family
FEMA flood zone
Not on file yet
County
Monroe County, FL
Parcel ID
fl-54-2966 28 00172790000000
At a glance
- Who owns 21005 3RD Ave?
- Monroe County property records list OBREIN SIOBHAN as the owner of record.
- What is the county just value of 21005 3RD Ave?
- $704,511 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-54-2966 28 00172790000000 (Monroe County).
Current owner
- OBREIN SIOBHAN
Owner contact info
Phones, emails and mailing addresses from public Florida records are available to members.
See plansMore on 3rd Ave
- 21006 3rd Ave $1M · built 1992
- 21025 3rd Ave $970K · built 1989
- 21026 3rd Ave $932K · built 1987
- 21036 3rd Ave $827K · built 1969
- 21045 3rd Ave $2.1M · built 1973
- 21046 3rd Ave $845K · built 1968
- 21056 3rd Ave $933K · built 1978
- 21066 3rd Ave $795K · built 1974
- 21075 3rd Ave $1.1M · built 2004
- 21076 3rd Ave $1.3M · built 1992
All 11 properties on 3rd Ave · ZIP 33042 (Cudjoe Key). Values are county just values (tax roll), not market values.
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Source: Florida Department of Revenue parcel roll; data refreshed Jun 23, 2026. Values are county tax-roll figures, not appraisals. How to read these values · Data sources