Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$486,810$686 / 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 92How 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

21 AVONDALE AVE

CHARLESTON, SC 29407
2
Beds
1
Baths
710 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.
0.35 ac
Lot SizeThe size of the land the home sits on, from county records.
1941
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$487K
$450K low$523K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,967 (2024)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$12,180 (2024)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$12,180
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$286,400

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.61 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.80%

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.Bungalow
CountyCharleston
Lot (acres)The size of the land the home sits on, from county records.0.35
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.Mat/Raft Foundation (Slab)
HeatingThe type of heating system in the home.Forced Air
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
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Porch · 150 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. Andrew's School of Math & ScienceB+
Elementary · Grades PK–5 · 0.5 mi
H
West Ashley High SchoolB
High · Grades 9–12 · 5.8 mi
M
C.E. Williams Middle SchoolC
Middle · Grades 6–8 · 5.8 mi

District: Charleston County School District

Neighborhood · ZIP 29407These 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.106
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.88
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.349

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.92%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.32%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.11%
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.37,520
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,108 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$83,865
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$108,457
Average tempThe average temperature here across a full year.66°F
Annual precipHow much rain and melted snow falls here in a typical year.48 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.63%

Owner Tools

Do you own this home?
Claim this home

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

21 Avondale 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.

  • Costs more per square foot than 95% of homes in Charleston 29407
  • Smaller than 98% of homes in Charleston 29407
  • Has a bigger lot than 78% of homes in Charleston 29407
  • Older than 96% of homes in Charleston 29407

What homes are worth in Charleston 29407

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

This home
$217K$2.1M

This home is worth more than 36% of homes in Charleston 29407.

How it measures up in Charleston 29407

The dot is this home. The mark in the middle is the typical home in Charleston 29407.

Estimated value$486,810
CheaperTypical $575,250Pricier

Pricier than 36% of homes nearby

Price per ft²$686
CheaperTypical $357Pricier

Pricier than 95% of homes nearby

Living area710 ft²
SmallerTypical 1,554 ft²Bigger

Bigger than 2% of homes nearby

Lot size0.35 ac
SmallerTypical 0.26 acBigger

Bigger than 78% of homes nearby

Year built1941
OlderTypical 1965Newer

Newer than 4% of homes nearby

How 21 Avondale Ave ranks against every home in each area.
MeasureThis homeCharleston 29407Charleston County
Estimated valuepricier than$486,81036% of homes36% of homes
Price per ft²pricier than$68695% of homes85% of homes
Living areabigger than710 ft²2% of homes2% of homes
Lot sizebigger than0.35 ac78% of homes71% of homes
Year builtnewer than19414% of homes6% of homes

About 21 Avondale Ave

How much is 21 Avondale Ave, Charleston, SC worth?

The TopHap Estimate for 21 Avondale Ave, Charleston, SC is $486,810 as of Sep 24, 2026. The likely range is $450,181 to $523,439. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

How big is 21 Avondale Ave, Charleston, SC?

21 Avondale Ave, Charleston, SC has 2 bedrooms, 1 bathrooms, 710 square feet of living space and a 0.35-acre lot.

When was 21 Avondale Ave, Charleston, SC built?

21 Avondale Ave, Charleston, SC was built in 1941, making it 85 years old. It is a bungalow home. The building has 1 story.

What schools serve 21 Avondale Ave, Charleston, SC?

21 Avondale Ave, Charleston, SC is assigned to St. Andrew's School of Math & Science (elementary), rated B+; West Ashley High School (high), rated B; C.E. Williams Middle School (middle), rated C. All sit in Charleston County School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Avondale Ave, Charleston, SC compare to other homes in Charleston 29407?

Among the 12,242 homes in Charleston 29407, it is worth more than 36% of them ($486,810 against a typical $575,250), its price per square foot is higher than 95% of them ($686 against a typical $357), it is bigger than 2% of them (710 ft² against a typical 1,554 ft²), its lot is bigger than 78% of them (0.35 ac against a typical 0.26 ac) and it is newer than 4% of them (1941 against a typical 1965). Measured against all of Charleston County, it is worth more than 36% 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 21 Avondale Ave, Charleston, SC?

The 2024 property tax bill for 21 Avondale Ave, Charleston, SC was $3,967. The county assessed it at $12,180.

More homes on Avondale Ave

Closest homes

More homes in Charleston 29407

Assigned schools

Explore the area

See this home in context

Open 21 Avondale Ave on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map