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Single Family ResidenceResidential
$759,473$415 / 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 90How 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

640 SPARK ST

MOUNT PLEASANT, SC 29464
4
Beds
2
Baths
1,829 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.
0.46 ac
Lot SizeThe size of the land the home sits on, from county records.
1986
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$759K
$687K low$832K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$231 (2024)

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.35
100
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
30
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
49
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.84 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.97%
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 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
CountyCharleston
Lot (acres)The size of the land the home sits on, from county records.0.46
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
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.Porch · 21 ft²

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

E
James B. Edwards Elementary School
Elementary · Grades PK–5 · 0.8 mi
H
Lucy Garrett Beckham High SchoolA
High · Grades 9–12 · 1.4 mi
M
Moultrie Middle SchoolA+
Middle · Grades 6–8 · 2.0 mi

District: Charleston County School District

Neighborhood · ZIP 29464These 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.69
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.86
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.344

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.91%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.42%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.0%
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.54,918
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,518 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$111,069
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$147,355
Average tempThe average temperature here across a full year.66°F
Annual precipHow much rain and melted snow falls here in a typical year.49 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

640 Spark 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 68% of homes in Mount Pleasant 29464
  • Costs less per square foot than 72% of homes in Mount Pleasant 29464
  • Has a bigger lot than 85% of homes in Mount Pleasant 29464

What homes are worth in Mount Pleasant 29464

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

This home
$340K$3.9M

This home is worth more than 32% of homes in Mount Pleasant 29464.

How it measures up in Mount Pleasant 29464

The dot is this home. The mark in the middle is the typical home in Mount Pleasant 29464.

Estimated value$759,473
CheaperTypical $971,883Pricier

Pricier than 32% of homes nearby

Price per ft²$415
CheaperTypical $472Pricier

Pricier than 28% of homes nearby

Living area1,829 ft²
SmallerTypical 1,926 ft²Bigger

Bigger than 45% of homes nearby

Lot size0.46 ac
SmallerTypical 0.25 acBigger

Bigger than 85% of homes nearby

Year built1986
OlderTypical 1988Newer

Newer than 45% of homes nearby

How 640 Spark St ranks against every home in each area.
MeasureThis homeMount Pleasant 29464Charleston County
Estimated valuepricier than$759,47332% of homes61% of homes
Price per ft²pricier than$41528% of homes64% of homes
Living areabigger than1,829 ft²45% of homes55% of homes
Lot sizebigger than0.46 ac85% of homes80% of homes
Year builtnewer than198645% of homes47% of homes

About 640 Spark St

How much is 640 Spark St, Mount Pleasant, SC worth?

The TopHap Estimate for 640 Spark St, Mount Pleasant, SC is $759,473 as of Sep 24, 2026. The likely range is $687,016 to $831,930. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 640 Spark St, Mount Pleasant, SC last sell?

640 Spark St, Mount Pleasant, SC last sold on Dec 26, 1984, according to the county's recorded deed.

How big is 640 Spark St, Mount Pleasant, SC?

640 Spark St, Mount Pleasant, SC has 4 bedrooms, 2 bathrooms, 1,829 square feet of living space and a 0.46-acre lot.

When was 640 Spark St, Mount Pleasant, SC built?

640 Spark St, Mount Pleasant, SC was built in 1986, making it 40 years old. It is a ranch home. The building has 1 story.

What schools serve 640 Spark St, Mount Pleasant, SC?

640 Spark St, Mount Pleasant, SC is assigned to James B. Edwards Elementary School (elementary); Lucy Garrett Beckham High School (high), rated A; Moultrie Middle School (middle), rated A+. All sit in Charleston County School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 640 Spark St, Mount Pleasant, SC compare to other homes in Mount Pleasant 29464?

Among the 19,180 homes in Mount Pleasant 29464, it is worth more than 32% of them ($759,473 against a typical $971,883), its price per square foot is higher than 28% of them ($415 against a typical $472), it is bigger than 45% of them (1,829 ft² against a typical 1,926 ft²), its lot is bigger than 85% of them (0.46 ac against a typical 0.25 ac) and it is newer than 45% of them (1986 against a typical 1988). Measured against all of Charleston County, it is worth more than 61% 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 640 Spark St, Mount Pleasant, SC?

The 2024 property tax bill for 640 Spark St, Mount Pleasant, SC was $231.

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