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Single Family ResidenceResidential
$245,619$130 / 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 84How 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

646 CALHOUN ST

SUMMERVILLE, SC 29485
4
Beds
2
Baths
1,890 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.
0.32 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.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$246K
$206K low$286K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$567 (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.$2,890 (2024)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$2,890
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$174,500

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.0.32
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
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, Detached
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 · 100 ft²Patio · 100 ft²Porch · 300 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
Ladson Elementary School
Elementary · Grades 1–5 · 3.6 mi
M
Deer Park Middle SchoolC-
Middle · Grades 6–8 · 7.2 mi
H
R. B. Stall High SchoolD-
High · Grades 9–12 · 7.4 mi

District: Charleston County School District

Neighborhood · ZIP 29485These 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.91
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.83
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.395

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.22%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.9.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.63,839
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,309 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$85,410
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$105,320
Average tempThe average temperature here across a full year.65°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%

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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

646 Calhoun 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 less than 96% of homes in Summerville 29485
  • Among the lowest price per square foot in Summerville 29485
  • Has a bigger lot than 78% of homes in Summerville 29485
  • Among the oldest homes in Summerville 29485

What homes are worth in Summerville 29485

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

This home
$224K$674K

This home is worth more than 4% of homes in Summerville 29485.

How it measures up in Summerville 29485

The dot is this home. The mark in the middle is the typical home in Summerville 29485.

Estimated value$245,619
CheaperTypical $385,130Pricier

Pricier than 4% of homes nearby

Price per ft²$130
CheaperTypical $204Pricier

Cheaper than almost all homes nearby

Living area1,890 ft²
SmallerTypical 1,875 ft²Bigger

Bigger than 51% of homes nearby

Lot size0.32 ac
SmallerTypical 0.21 acBigger

Bigger than 78% of homes nearby

Year built1960
OlderTypical 2004Newer

Older than almost all homes nearby

How 646 Calhoun St ranks against every home in each area.
MeasureThis homeSummerville 29485Charleston County
Estimated valuepricier than$245,6194% of homes7% of homes
Price per ft²pricier than$130almost no homesalmost no homes
Living areabigger than1,890 ft²51% of homes58% of homes
Lot sizebigger than0.32 ac78% of homes66% of homes
Year builtnewer than1960almost no homes17% of homes

About 646 Calhoun St

How much is 646 Calhoun St, Summerville, SC worth?

The TopHap Estimate for 646 Calhoun St, Summerville, SC is $245,619 as of Sep 24, 2026. The likely range is $205,591 to $285,647. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

How big is 646 Calhoun St, Summerville, SC?

646 Calhoun St, Summerville, SC has 4 bedrooms, 2 bathrooms, 1,890 square feet of living space and a 0.32-acre lot.

When was 646 Calhoun St, Summerville, SC built?

646 Calhoun St, Summerville, SC was built in 1960, making it 66 years old. It is a ranch home. The building has 1 story.

What schools serve 646 Calhoun St, Summerville, SC?

646 Calhoun St, Summerville, SC is assigned to Ladson Elementary School (elementary); Deer Park Middle School (middle), rated C-; R. B. Stall High School (high), rated D-. All sit in Charleston County School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 646 Calhoun St, Summerville, SC compare to other homes in Summerville 29485?

Among the 21,355 homes in Summerville 29485, it is worth more than 4% of them ($245,619 against a typical $385,130), its price per square foot is higher than almost none of them ($130 against a typical $204), it is bigger than 51% of them (1,890 ft² against a typical 1,875 ft²), its lot is bigger than 78% of them (0.32 ac against a typical 0.21 ac) and it is newer than almost none of them (1960 against a typical 2004). Measured against all of Charleston County, it is worth more than 7% 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 646 Calhoun St, Summerville, SC?

The 2024 property tax bill for 646 Calhoun St, Summerville, SC was $567. The county assessed it at $2,890.

More homes on Calhoun St

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Assigned schools

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