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Single Family ResidenceResidential
$642,849$393 / 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 89How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026

309 SANDCASTLE LN

ST SIMONS ISLAND, GA 31522
3
Beds
2
Baths
1,637 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.
0.1 ac
Lot SizeThe size of the land the home sits on, from county records.
1992
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
5
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$643K
$572K low$713K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,723 (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.$228,200 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$90,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$138,200
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$196,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$570,500

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.41
25
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
27
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
89
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
57
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
7
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.24 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.26%
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.0.2 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
StyleThe architectural style of the home, such as ranch or colonial.Ranch
CountyGlynn
Lot (acres)The size of the land the home sits on, from county records.0.10
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.Mat/Raft Foundation (Slab)
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Central
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.Patio · 150 ft²Porch · 85 ft²

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.

E
St. Simons Elementary SchoolA
Elementary · Grades KG–5 · 0.9 mi
M
Glynn Middle SchoolB-
Middle · Grades 6–8 · 5.3 mi
H
Glynn AcademyA+
High · Grades 9–12 · 5.8 mi

District: Glynn County School District

Neighborhood · ZIP 31522These 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.94
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.68
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.38

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.73%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.33%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.7%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.8%
PopulationHow many people live in this area.17,404
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.233 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$107,572
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$137,416
Average tempThe average temperature here across a full year.68°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.66%

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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

309 Sandcastle Ln 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 75% of homes in Glynn County
  • Costs more per square foot than 81% of homes in Glynn County
  • Has a smaller lot than 93% of homes in Glynn County

What homes are worth in Saint Simons Island 31522

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

This home
$280K$3.5M

This home is worth more than 40% of homes in Saint Simons Island 31522.

How it measures up in Saint Simons Island 31522

The dot is this home. The mark in the middle is the typical home in Saint Simons Island 31522.

Estimated value$642,849
CheaperTypical $736,698Pricier

Pricier than 40% of homes nearby

Price per ft²$393
CheaperTypical $385Pricier

Pricier than 52% of homes nearby

Living area1,637 ft²
SmallerTypical 1,870 ft²Bigger

Bigger than 38% of homes nearby

Lot size0.1 ac
SmallerTypical 0.24 acBigger

Bigger than 10% of homes nearby

Year built1992
OlderTypical 1990Newer

Newer than 53% of homes nearby

How 309 Sandcastle Ln ranks against every home in each area.
MeasureThis homeSaint Simons Island 31522Glynn County
Estimated valuepricier than$642,84940% of homes75% of homes
Price per ft²pricier than$39352% of homes81% of homes
Living areabigger than1,637 ft²38% of homes46% of homes
Lot sizebigger than0.1 ac10% of homes7% of homes
Year builtnewer than199253% of homes53% of homes

About 309 Sandcastle Ln

How much is 309 Sandcastle Ln, St Simons Island, GA worth?

The TopHap Estimate for 309 Sandcastle Ln, St Simons Island, GA is $642,849 as of Aug 30, 2026. The likely range is $572,411 to $713,287. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 309 Sandcastle Ln, St Simons Island, GA last sell?

309 Sandcastle Ln, St Simons Island, GA last sold on Oct 8, 2024, according to the county's recorded deed.

How big is 309 Sandcastle Ln, St Simons Island, GA?

309 Sandcastle Ln, St Simons Island, GA has 3 bedrooms, 2 bathrooms, 1,637 square feet of living space and a 0.10-acre lot.

When was 309 Sandcastle Ln, St Simons Island, GA built?

309 Sandcastle Ln, St Simons Island, GA was built in 1992, making it 34 years old. It is a ranch home. The building has 1 story.

What schools serve 309 Sandcastle Ln, St Simons Island, GA?

309 Sandcastle Ln, St Simons Island, GA is assigned to St. Simons Elementary School (elementary), rated A; Glynn Middle School (middle), rated B-; Glynn Academy (high), rated A+. All sit in Glynn County School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 309 Sandcastle Ln, St Simons Island, GA compare to other homes in Saint Simons Island 31522?

Among the 11,998 homes in Saint Simons Island 31522, it is worth more than 40% of them ($642,849 against a typical $736,698), its price per square foot is higher than 52% of them ($393 against a typical $385), it is bigger than 38% of them (1,637 ft² against a typical 1,870 ft²), its lot is bigger than 10% of them (0.1 ac against a typical 0.24 ac) and it is newer than 53% of them (1992 against a typical 1990). Measured against all of Glynn County, it is worth more than 75% 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 309 Sandcastle Ln, St Simons Island, GA?

The 2025 property tax bill for 309 Sandcastle Ln, St Simons Island, GA was $5,723. The county assessed it at $228,200.

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