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Single Family ResidenceResidential

37 21ST AVE

ISLE OF PALMS, SC 29451
3
Beds
1
Baths
1,289 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.
0.28 ac
Lot SizeThe size of the land the home sits on, from county records.
1960
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$13,845 (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.$1,035,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$922,200
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$112,800
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$54,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,309,900

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.67 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.99%

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
CountyCHARLESTON
Lot (acres)The size of the land the home sits on, from county records.0.28
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
CoolingThe type of cooling or air conditioning in the home.Central
PoolWhether the property has a pool, and what kind, such as in-ground.No

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.

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

E
Sullivan's Island Elementary School
Elementary · Grades PK–5 · 3.9 mi
M
Moultrie Middle SchoolA+
Middle · Grades 6–8 · 5.0 mi
H
Wando High SchoolA
High · Grades 9–12 · 6.6 mi

District: Charleston County School District

Neighborhood · ZIP 29451These 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.130
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.80
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.291

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.55%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.31%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.5,565
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.443 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$158,034
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$228,227
Average tempThe average temperature here across a full year.65°F
Annual precipHow much rain and melted snow falls here in a typical year.50 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.63%

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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

37 21st Ave 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.

  • Smaller than 80% of homes in Isle of Palms 29451
  • Older than 93% of homes in Isle of Palms 29451

How it measures up in Isle of Palms 29451

The dot is this home. The mark in the middle is the typical home in Isle of Palms 29451.

Living area1,289 ft²
SmallerTypical 2,054 ft²Bigger

Bigger than 20% of homes nearby

Lot size0.28 ac
SmallerTypical 0.25 acBigger

Bigger than 57% of homes nearby

Year built1960
OlderTypical 1986Newer

Newer than 7% of homes nearby

How 37 21st Ave ranks against every home in each area.
MeasureThis homeIsle of Palms 29451Charleston County
Living areabigger than1,289 ft²20% of homes28% of homes
Lot sizebigger than0.28 ac57% of homes60% of homes
Year builtnewer than19607% of homes17% of homes

About 37 21st Ave

When did 37 21st Ave, Isle Of Palms, SC last sell?

37 21st Ave, Isle Of Palms, SC last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 37 21st Ave, Isle Of Palms, SC?

37 21st Ave, Isle Of Palms, SC has 3 bedrooms, 1 bathrooms, 1,289 square feet of living space and a 0.28-acre lot.

When was 37 21st Ave, Isle Of Palms, SC built?

37 21st Ave, Isle Of Palms, SC was built in 1960, making it 66 years old. It is a ranch home. The building has 1 story.

What schools serve 37 21st Ave, Isle Of Palms, SC?

37 21st Ave, Isle Of Palms, SC is assigned to Sullivan's Island Elementary School (elementary); Moultrie Middle School (middle), rated A+; Wando High School (high), rated A. All sit in Charleston County School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 37 21st Ave, Isle Of Palms, SC compare to other homes in Isle of Palms 29451?

Among the 4,578 homes in Isle of Palms 29451, it is bigger than 20% of them (1,289 ft² against a typical 2,054 ft²), its lot is bigger than 57% of them (0.28 ac against a typical 0.25 ac) and it is newer than 7% of them (1960 against a typical 1986). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 37 21st Ave, Isle Of Palms, SC?

The 2025 property tax bill for 37 21st Ave, Isle Of Palms, SC was $13,845. The county assessed it at $1,035,000.

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