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Single Family ResidenceResidential
$479,662$285 / 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 94How 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

3280 21ST AVE SW

NAPLES, FL 34117
0
Baths
1,683 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.
2.5 ac
Lot SizeThe size of the land the home sits on, from county records.
1988
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$480K
$453K low$506K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,712 (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.$185,996 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$181,106
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$509,594

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.120 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.80%
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
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.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 594 ft²

Transaction History(1)

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.

H
Golden Gate High SchoolC-
High · Grades 9–12 · 2.3 mi
E
Big Cypress Elementary SchoolA-
Elementary · Grades KG–5 · 2.6 mi
M
Oakridge Middle SchoolA
Middle · Grades 6–8 · 5.3 mi

District: Collier County School District

Neighborhood · ZIP 34117These 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.15
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 100.14

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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.17%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.19,634
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.146 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$89,869
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$114,563
Average tempThe average temperature here across a full year.75°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%

Owner Tools

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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

3280 21st Ave Sw 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.

  • Costs less per square foot than 66% of homes in Collier County
  • Has a bigger lot than 95% of homes in Collier County
  • Older than 81% of homes in Naples 34117

What homes are worth in Naples 34117

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

This home
$277K$1.4M

This home is worth more than 37% of homes in Naples 34117.

How it measures up in Naples 34117

The dot is this home. The mark in the middle is the typical home in Naples 34117.

Estimated value$479,662
CheaperTypical $522,843Pricier

Pricier than 37% of homes nearby

Price per ft²$285
CheaperTypical $312Pricier

Pricier than 35% of homes nearby

Living area1,683 ft²
SmallerTypical 1,709 ft²Bigger

Bigger than 48% of homes nearby

Lot size2.5 ac
SmallerTypical 2.27 acBigger

Bigger than 68% of homes nearby

Year built1988
OlderTypical 2000Newer

Newer than 19% of homes nearby

How 3280 21st Ave Sw ranks against every home in each area.
MeasureThis homeNaples 34117Collier County
Estimated valuepricier than$479,66237% of homes40% of homes
Price per ft²pricier than$28535% of homes34% of homes
Living areabigger than1,683 ft²48% of homes53% of homes
Lot sizebigger than2.5 ac68% of homes95% of homes
Year builtnewer than198819% of homes29% of homes

About 3280 21st Ave Sw

How much is 3280 21st Ave Sw, Naples, FL worth?

The TopHap Estimate for 3280 21st Ave Sw, Naples, FL is $479,662 as of Oct 21, 2026. The likely range is $453,144 to $506,180. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3280 21st Ave Sw, Naples, FL last sell?

3280 21st Ave Sw, Naples, FL last sold on Jan 1, 1900, according to the county's recorded deed.

When was 3280 21st Ave Sw, Naples, FL built?

3280 21st Ave Sw, Naples, FL was built in 1988, making it 38 years old. The building has 1 story.

What schools serve 3280 21st Ave Sw, Naples, FL?

3280 21st Ave Sw, Naples, FL is assigned to Golden Gate High School (high), rated C-; Big Cypress Elementary School (elementary), rated A-; Oakridge Middle School (middle), rated A. All sit in Collier County School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3280 21st Ave Sw, Naples, FL compare to other homes in Naples 34117?

Among the 6,299 homes in Naples 34117, it is worth more than 37% of them ($479,662 against a typical $522,843), its price per square foot is higher than 35% of them ($285 against a typical $312), it is bigger than 48% of them (1,683 ft² against a typical 1,709 ft²), its lot is bigger than 68% of them (2.5 ac against a typical 2.27 ac) and it is newer than 19% of them (1988 against a typical 2000). Measured against all of Collier County, it is worth more than 40% of 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 3280 21st Ave Sw, Naples, FL?

The 2025 property tax bill for 3280 21st Ave Sw, Naples, FL was $1,712. The county assessed it at $185,996.

More homes on 21st Ave Sw

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Assigned schools

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