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Single Family ResidenceResidential
$7,391,420$1,881 / ft²
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 95How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026
Last sold for $7,400,000 on Aug 7, 2026

651 21ST AVE S

NAPLES, FL 34102
0
Baths
3,930 ft²
Living AreaTotal finished area of the structures, from county records. Some counties include shared space like hallways or a building gym, so it may not match a listing.
0.33 ac
Lot SizeThe size of the land the home sits on, from county records.
2002
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$7.4M
$7M low$7.7M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$7,400,000 · Aug 7, 2026

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$75,576 (2025)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$7,970,635 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$7,246,032
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$9,201,050

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.131 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.100%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.1 percent flood zone

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyCOLLIER
Lot (acres)The size of the land the home sits on, from county records.0.33
ConstructionThe main material the home's frame and walls are built from.Masonry/Concrete Masonry Units (Cmus)
PoolWhether the property has a pool, and what kind, such as in-ground.Yes
ViewThe type of view from the property, or another feature of the site that affects value.Waterfront
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 495 ft²Boat access

Transaction History(2)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

M
Gulfview Middle SchoolA
Middle · Grades 6–8 · 1.5 mi
E
Lake Park Elementary SchoolA+
Elementary · Grades KG–5 · 3.0 mi
H
Naples High SchoolB-
High · Grades 9–12 · 3.4 mi

District: Collier County School District

Neighborhood · ZIP 34102These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.132
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.81
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.18

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.57%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.35%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.8%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.7%
PopulationHow many people live in this area.12,070
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,359 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$127,305
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$217,121
Average tempThe average temperature here across a full year.74°F
Annual precipHow much rain and melted snow falls here in a typical year.53 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.68%

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Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

How this home compares

651 21st Ave S measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Among the most valuable homes in Collier County
  • Costs more per square foot than 98% of homes in Collier County
  • Bigger than 97% of homes in Collier County
  • Has a bigger lot than 73% of homes in Collier County
  • Newer than 70% of homes in Naples 34102

What homes are worth in Naples 34102

Each bar is how many homes fall in that price range. The marker is this home.

This home
$204K$10M

This home is worth more than 88% of homes in Naples 34102.

How it measures up in Naples 34102

The dot is this home. The mark in the middle is the typical home in Naples 34102.

Estimated value$7,391,420
CheaperTypical $1,312,966Pricier

Pricier than 88% of homes nearby

Price per ft²$1881
CheaperTypical $931Pricier

Pricier than 79% of homes nearby

Living area3,930 ft²
SmallerTypical 1,585 ft²Bigger

Bigger than 91% of homes nearby

Lot size0.33 ac
SmallerTypical 0.32 acBigger

Bigger than 54% of homes nearby

Year built2002
OlderTypical 1987Newer

Newer than 70% of homes nearby

How 651 21st Ave S ranks against every home in each area.
MeasureThis homeAqualane ShoresNaples 34102Collier County
Estimated valuepricier than$7,391,42035% of homes88% of homesalmost all homes
Price per ft²pricier than$188116% of homes79% of homes98% of homes
Living areabigger than3,930 ft²80% of homes91% of homes97% of homes
Lot sizebigger than0.33 ac50% of homes54% of homes73% of homes
Year builtnewer than200251% of homes70% of homes64% of homes

About 651 21st Ave S

How much is 651 21st Ave S, Naples, FL worth?

The TopHap Estimate for 651 21st Ave S, Naples, FL is $7,391,420 as of Oct 21, 2026. The likely range is $7,046,564 to $7,736,275. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 651 21st Ave S, Naples, FL last sell?

651 21st Ave S, Naples, FL last sold on Aug 7, 2026 for $7,400,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 651 21st Ave S, Naples, FL?

651 21st Ave S, Naples, FL has 3,930 square feet of living space and a 0.33-acre lot.

When was 651 21st Ave S, Naples, FL built?

651 21st Ave S, Naples, FL was built in 2002, making it 24 years old. The building has 2 stories.

What schools serve 651 21st Ave S, Naples, FL?

651 21st Ave S, Naples, FL is assigned to Gulfview Middle School (middle), rated A; Lake Park Elementary School (elementary), rated A+; Naples High School (high), rated B-. All sit in Collier County School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 651 21st Ave S, Naples, FL compare to other homes in Naples 34102?

Among the 10,507 homes in Naples 34102, it is worth more than 88% of them ($7,391,420 against a typical $1,312,966), its price per square foot is higher than 79% of them ($1881 against a typical $931), it is bigger than 91% of them (3,930 ft² against a typical 1,585 ft²), its lot is bigger than 54% of them (0.33 ac against a typical 0.32 ac) and it is newer than 70% of them (2002 against a typical 1987). Measured against all of Collier County, it is worth more than almost all homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 651 21st Ave S, Naples, FL?

The 2025 property tax bill for 651 21st Ave S, Naples, FL was $75,576. The county assessed it at $7,970,635.

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