515 21st Avenue S, Naples, FL 34102
Single family property built in 1971 with 3,147 sq ft of living area on a 0.34-acre lot in Naples, Collier County. Facts below come from the county property appraiser's public record.
County just value (tax roll) — not a market value
$4,863,008
County assessed value (tax roll)
$1,074,763
Living area
3,147 sq ft
Lot size
0.34 acres (15,000 sq ft)
Year built
1971
Land use
Single family
FEMA flood zone
Not on file yet
County
Collier County, FL
Parcel ID
fl-21-01881480000
At a glance
- Who owns 515 21st Ave S?
- Collier County property records list HERMES AND JOAN KOOP CMTY as the owner of record.
- What is the county just value of 515 21st Ave S?
- $4,863,008 on the Collier 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-21-01881480000 (Collier County).
Current owner
- HERMES AND JOAN KOOP CMTY
Owner contact info
Phones, emails and mailing addresses from public Florida records are available to members.
See plansMore on 21st Ave S
- 255 21st Ave S $9.5M · built 2023
- 305 21st Ave S $14.4M · built 2018
- 351 21st Ave S $5.5M · built 1995
- 375 21st Ave S $11.9M · built 2024
- 395 21st Ave S $4M
- 421 21st Ave S $7.8M · built 1999
- 451 21st Ave S $11.3M · built 2010
- 481 21st Ave S $11.5M · built 2017
- 505 21st Ave S $12.9M · built 2021
- 512 21st Ave S $8.7M · built 2007
- 518 21st Ave S $8.6M · built 2021
- 531 21st Ave S $7.6M · built 1999
- 550 21st Ave S $6.5M · built 2001
- 567 21st Ave S $7.5M · built 1999
- 575 21st Ave S $8.3M · built 2002
- 595 21st Ave S $8.2M · built 2002
- 605 21st Ave S $4.3M · built 1978
- 606 21st Ave S $4.4M · built 1970
- 625 21st Ave S $4M
- 628 21st Ave S $7.5M · built 2014
All 33 properties on 21st Ave S · ZIP 34102 (Naples). Values are county just values (tax roll), not market values.
Nearby properties
- 505 21st Ave S, Naples $12.9M · built 2021
- 567 21st Ave S, Naples $7.5M · built 1999
- 512 21st Ave S, Naples $8.7M · built 2007
- 550 21st Ave S, Naples $6.5M · built 2001
- 2025 5th St S, Naples $2.9M
- 299 Little Harbour Ln, Naples $7M · built 1999
- 595 21st Ave S, Naples $8.2M · built 2002
- 2155 Winds Dr, Naples $2.6M · built 1972
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Source: Florida Department of Revenue parcel roll; data refreshed Jun 24, 2026. Values are county tax-roll figures, not appraisals. How to read these values · Data sources