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Single Family ResidenceResidential
$820,777$451 / 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 98How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026
Last sold for $820,000 on Jun 26, 2026

509 20TH ST

SAINT AUGUSTINE, FL 32084
3
Beds
2
Baths
1,818 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.
0.23 ac
Lot SizeThe size of the land the home sits on, from county records.
2004
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$821K
$803K low$839K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$820,000 · Jun 26, 2026

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,801 (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.$303,099 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$295,130
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$765,354

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.35 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.96%
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 coastal 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
CountyST. JOHNS
Lot (acres)The size of the land the home sits on, from county records.0.23
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
CoolingThe type of cooling or air conditioning in the home.Central
FireplaceWhether the home has a fireplace, and what kind.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
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 · 290 ft²Porch · 358 ft²

Transaction History(3)

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

Foreclosure Filings(1)

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

M
Sebastian Middle SchoolA-
Middle · Grades 6–8 · 2.4 mi
H
St. Augustine High SchoolB
High · Grades 9–12 · 2.5 mi
E
Ketterlinus Elementary SchoolA
Elementary · Grades KG–5 · 3.2 mi

District: St. Johns County School District

Neighborhood · ZIP 32084These 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.143
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.76
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.27

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.90%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.21%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.12%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.9%
PopulationHow many people live in this area.41,882
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.894 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$73,117
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$86,137
Average tempThe average temperature here across a full year.70°F
Annual precipHow much rain and melted snow falls here in a typical year.51 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.63%

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

509 20th St 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.

  • Worth more than 92% of homes in Saint Augustine 32084
  • Costs more per square foot than 93% of homes in St. Johns County
  • Bigger than 69% of homes in Saint Augustine 32084
  • Newer than 78% of homes in Vilano Beach

What homes are worth in Saint Augustine 32084

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

This home
$148K$1.5M

This home is worth more than 92% of homes in Saint Augustine 32084.

How it measures up in Saint Augustine 32084

The dot is this home. The mark in the middle is the typical home in Saint Augustine 32084.

Estimated value$820,777
CheaperTypical $347,491Pricier

Pricier than 92% of homes nearby

Price per ft²$451
CheaperTypical $215Pricier

Pricier than 90% of homes nearby

Living area1,818 ft²
SmallerTypical 1,509 ft²Bigger

Bigger than 69% of homes nearby

Lot size0.23 ac
SmallerTypical 0.18 acBigger

Bigger than 64% of homes nearby

Year built2004
OlderTypical 2004Newer

Newer than 52% of homes nearby

How 509 20th St ranks against every home in each area.
MeasureThis homeVilano BeachSaint Augustine 32084St. Johns County
Estimated valuepricier than$820,77754% of homes92% of homes84% of homes
Price per ft²pricier than$45162% of homes90% of homes93% of homes
Living areabigger than1,818 ft²39% of homes69% of homes42% of homes
Lot sizebigger than0.23 ac49% of homes64% of homes53% of homes
Year builtnewer than200478% of homes52% of homes45% of homes

About 509 20th St

How much is 509 20th St, Saint Augustine, FL worth?

The TopHap Estimate for 509 20th St, Saint Augustine, FL is $820,777 as of Sep 24, 2026. The likely range is $802,937 to $838,617. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 509 20th St, Saint Augustine, FL last sell?

509 20th St, Saint Augustine, FL last sold on Jun 26, 2026 for $820,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 509 20th St, Saint Augustine, FL?

509 20th St, Saint Augustine, FL has 3 bedrooms, 2 bathrooms, 1,818 square feet of living space and a 0.23-acre lot.

When was 509 20th St, Saint Augustine, FL built?

509 20th St, Saint Augustine, FL was built in 2004, making it 22 years old. The building has 1 story.

What schools serve 509 20th St, Saint Augustine, FL?

509 20th St, Saint Augustine, FL is assigned to Sebastian Middle School (middle), rated A-; St. Augustine High School (high), rated B; Ketterlinus Elementary School (elementary), rated A. All sit in St. Johns County School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 509 20th St, Saint Augustine, FL compare to other homes in Saint Augustine 32084?

Among the 17,265 homes in Saint Augustine 32084, it is worth more than 92% of them ($820,777 against a typical $347,491), its price per square foot is higher than 90% of them ($451 against a typical $215), it is bigger than 69% of them (1,818 ft² against a typical 1,509 ft²), its lot is bigger than 64% of them (0.23 ac against a typical 0.18 ac) and it is newer than 52% of them (2004 against a typical 2004). Measured against all of St. Johns County, it is worth more than 84% 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 509 20th St, Saint Augustine, FL?

The 2025 property tax bill for 509 20th St, Saint Augustine, FL was $3,801. The county assessed it at $303,099.

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