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Single Family ResidenceResidential
$120,414$112 / 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 88How 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
Last sold for $1,000 on Jan 13, 1998

129 MARK ST

UNION, SC 29379
1.5
Baths
1,073 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.
1.65 ac
Lot SizeThe size of the land the home sits on, from county records.
1
StoriesHow many floors the home has above ground.

Valuation

$120K
$106K low$135K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$1,000 · Jan 13, 1998

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$61 (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.$2,350 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$250
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$2,100
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$58,650
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$121,100

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.57
64
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
12
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
83
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
94
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
33
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.30 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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.minimal

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
CountyUNION
Lot (acres)The size of the land the home sits on, from county records.1.65
PoolWhether the property has a pool, and what kind, such as in-ground.No

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

E
Monarch Elementary SchoolB
Elementary · Grades PK–5 · 0.4 mi
H
Union County High SchoolD+
High · Grades 9–12 · 1.8 mi
M
Sims Middle SchoolB-
Middle · Grades 6–8 · 3.0 mi

District: Union County School District

Neighborhood · ZIP 29379These 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.123
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.92
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.98

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.87%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.12%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.23%
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.18,493
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.72 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$46,299
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$60,588
Average tempThe average temperature here across a full year.61°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.61%

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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

129 Mark 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.

  • Smaller than 69% of homes in Union 29379

What homes are worth in Union 29379

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

This home
$45K$424K

This home is worth more than 36% of homes in Union 29379.

How it measures up in Union 29379

The dot is this home. The mark in the middle is the typical home in Union 29379.

Estimated value$120,414
CheaperTypical $146,798Pricier

Pricier than 36% of homes nearby

Price per ft²$112
CheaperTypical $108Pricier

Pricier than 55% of homes nearby

Living area1,073 ft²
SmallerTypical 1,252 ft²Bigger

Bigger than 31% of homes nearby

Lot size1.65 ac
SmallerTypical 2.26 acBigger

Bigger than 40% of homes nearby

How 129 Mark St ranks against every home in each area.
MeasureThis homeUnion 29379Union County
Estimated valuepricier than$120,41436% of homes37% of homes
Price per ft²pricier than$11255% of homes55% of homes
Living areabigger than1,073 ft²31% of homes32% of homes
Lot sizebigger than1.65 ac40% of homes36% of homes

About 129 Mark St

How much is 129 Mark St, Union, SC worth?

The TopHap Estimate for 129 Mark St, Union, SC is $120,414 as of Aug 30, 2026. The likely range is $105,553 to $135,275. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 129 Mark St, Union, SC last sell?

129 Mark St, Union, SC last sold on Jan 13, 1998 for $1,000, according to the county's recorded deed.

How big is 129 Mark St, Union, SC?

129 Mark St, Union, SC has 1.5 bathrooms, 1,073 square feet of living space and a 1.65-acre lot.

What schools serve 129 Mark St, Union, SC?

129 Mark St, Union, SC is assigned to Monarch Elementary School (elementary), rated B; Union County High School (high), rated D+; Sims Middle School (middle), rated B-. All sit in Union County School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 129 Mark St, Union, SC compare to other homes in Union 29379?

Among the 7,969 homes in Union 29379, it is worth more than 36% of them ($120,414 against a typical $146,798), its price per square foot is higher than 55% of them ($112 against a typical $108), it is bigger than 31% of them (1,073 ft² against a typical 1,252 ft²) and its lot is bigger than 40% of them (1.65 ac against a typical 2.26 ac). Measured against all of Union County, it is worth more than 37% 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 129 Mark St, Union, SC?

The 2025 property tax bill for 129 Mark St, Union, SC was $61. The county assessed it at $2,350.

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