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Residential (General/Single)Residential
$170,448$170 / 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 87How 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

821 BLACKMON ST

ROCK HILL, SC 29730
1
Baths
1,000 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 ac
Lot SizeThe size of the land the home sits on, from county records.
1973
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$170K
$148K low$193K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,775 (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.$8,778 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$2,160
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$6,618
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$8,491
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$146,300

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.46
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
10
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
91
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
82
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
48
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
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.Residential (General/Single)
CountyYork
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.2010
Lot (acres)The size of the land the home sits on, from county records.1.00
HeatingThe type of heating system in the home.None
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 · 40 ft²

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

E
Oakdale Elementary School
Elementary · Grades PK–5 · 1.8 mi
M
Saluda Trail Middle SchoolC+
Middle · Grades 6–8 · 1.9 mi
H
South Pointe High SchoolC-
High · Grades 9–12 · 2.1 mi

District: York School District 3

Neighborhood · ZIP 29730These 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.94
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.85

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.17%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.12%
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.64,639
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.525 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$65,373
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$82,333
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

821 Blackmon 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 87% of homes in York County
  • Costs less per square foot than 71% of homes in York County
  • Smaller than 91% of homes in York County
  • Has a bigger lot than 80% of homes in Rock Hill 29730
  • Older than 85% of homes in York County

What homes are worth in Rock Hill 29730

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

This home
$73K$696K

This home is worth more than 26% of homes in Rock Hill 29730.

How it measures up in Rock Hill 29730

The dot is this home. The mark in the middle is the typical home in Rock Hill 29730.

Estimated value$170,448
CheaperTypical $259,350Pricier

Pricier than 26% of homes nearby

Price per ft²$170
CheaperTypical $172Pricier

Pricier than 49% of homes nearby

Living area1,000 ft²
SmallerTypical 1,462 ft²Bigger

Bigger than 15% of homes nearby

Lot size1 ac
SmallerTypical 1 acBigger

Bigger than 80% of homes nearby

Year built1973
OlderTypical 1984Newer

Newer than 41% of homes nearby

How 821 Blackmon St ranks against every home in each area.
MeasureThis homeRock Hill 29730York County
Estimated valuepricier than$170,44826% of homes13% of homes
Price per ft²pricier than$17049% of homes29% of homes
Living areabigger than1,000 ft²15% of homes9% of homes
Lot sizebigger than1 ac80% of homes79% of homes
Year builtnewer than197341% of homes15% of homes

About 821 Blackmon St

How much is 821 Blackmon St, Rock Hill, SC worth?

The TopHap Estimate for 821 Blackmon St, Rock Hill, SC is $170,448 as of Sep 24, 2026. The likely range is $147,802 to $193,094. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 821 Blackmon St, Rock Hill, SC last sell?

821 Blackmon St, Rock Hill, SC last sold on Apr 2, 1990, according to the county's recorded deed.

How big is 821 Blackmon St, Rock Hill, SC?

821 Blackmon St, Rock Hill, SC has 1 bathrooms, 1,000 square feet of living space and a 1.00-acre lot.

When was 821 Blackmon St, Rock Hill, SC built?

821 Blackmon St, Rock Hill, SC was built in 1973, making it 53 years old. The building has 1 story.

What schools serve 821 Blackmon St, Rock Hill, SC?

821 Blackmon St, Rock Hill, SC is assigned to Oakdale Elementary School (elementary); Saluda Trail Middle School (middle), rated C+; South Pointe High School (high), rated C-. All sit in York School District 3. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 821 Blackmon St, Rock Hill, SC compare to other homes in Rock Hill 29730?

Among the 19,088 homes in Rock Hill 29730, it is worth more than 26% of them ($170,448 against a typical $259,350), its price per square foot is higher than 49% of them ($170 against a typical $172), it is bigger than 15% of them (1,000 ft² against a typical 1,462 ft²), its lot is bigger than 80% of them (1 ac against a typical 1 ac) and it is newer than 41% of them (1973 against a typical 1984). Measured against all of York County, it is worth more than 13% 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 821 Blackmon St, Rock Hill, SC?

The 2025 property tax bill for 821 Blackmon St, Rock Hill, SC was $3,775. The county assessed it at $8,778.

More homes on Blackmon St

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