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Single Family ResidenceResidential
$191,987$141 / 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 89How 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 $85,500 on Oct 4, 2021

421 UNION ST

KINGSPORT, TN 37660
1
Baths
1,363 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.
0.31 ac
Lot SizeThe size of the land the home sits on, from county records.
1950
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

$192K
$170K low$214K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$85,500 · Oct 4, 2021

Tax & Assessment

Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$55,150 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$6,475
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$48,675
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$28,075
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$220,600

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.12 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
CountySullivan
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.1985
Lot (acres)The size of the land the home sits on, from county records.0.31
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.Footing
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Yes
CoolingThe type of cooling or air conditioning in the home.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Carport (Unspecified)
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 · 124 ft²Patio · 280 ft²

Transaction History(3)

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
Andrew Jackson Elementary SchoolC
Elementary · Grades KG–5 · 1.1 mi
M
John Sevier Middle SchoolB+
Middle · Grades 6–8 · 2.3 mi
H
Dobyns-Bennett High SchoolA-
High · Grades 9–12 · 3.4 mi

District: Kingsport City School District

Neighborhood · ZIP 37660These 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.126
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.115
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.115

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.89%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.15%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.18%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.42,434
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.662 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$50,632
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$71,029
Average tempThe average temperature here across a full year.57°F
Annual precipHow much rain and melted snow falls here in a typical year.44 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.53%

Owner Tools

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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

421 Union 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 70% of homes in Sullivan County
  • Costs less per square foot than 77% of homes in Sullivan County
  • Has a smaller lot than 73% of homes in Sullivan County
  • Older than 78% of homes in Sullivan County

What homes are worth in Kingsport 37660

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

This home
$63K$750K

This home is worth more than 40% of homes in Kingsport 37660.

How it measures up in Kingsport 37660

The dot is this home. The mark in the middle is the typical home in Kingsport 37660.

Estimated value$191,987
CheaperTypical $221,237Pricier

Pricier than 40% of homes nearby

Price per ft²$141
CheaperTypical $161Pricier

Pricier than 33% of homes nearby

Living area1,363 ft²
SmallerTypical 1,344 ft²Bigger

Bigger than 52% of homes nearby

Lot size0.31 ac
SmallerTypical 0.38 acBigger

Bigger than 37% of homes nearby

Year built1950
OlderTypical 1968Newer

Newer than 27% of homes nearby

How 421 Union St ranks against every home in each area.
MeasureThis homeKingsport 37660Sullivan County
Estimated valuepricier than$191,98740% of homes30% of homes
Price per ft²pricier than$14133% of homes23% of homes
Living areabigger than1,363 ft²52% of homes48% of homes
Lot sizebigger than0.31 ac37% of homes27% of homes
Year builtnewer than195027% of homes22% of homes

About 421 Union St

How much is 421 Union St, Kingsport, TN worth?

The TopHap Estimate for 421 Union St, Kingsport, TN is $191,987 as of Aug 30, 2026. The likely range is $169,999 to $213,975. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 421 Union St, Kingsport, TN last sell?

421 Union St, Kingsport, TN last sold on Oct 4, 2021 for $85,500, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 421 Union St, Kingsport, TN?

421 Union St, Kingsport, TN has 1 bathrooms, 1,363 square feet of living space and a 0.31-acre lot.

When was 421 Union St, Kingsport, TN built?

421 Union St, Kingsport, TN was built in 1950, making it 76 years old. The building has 1 story.

What schools serve 421 Union St, Kingsport, TN?

421 Union St, Kingsport, TN is assigned to Andrew Jackson Elementary School (elementary), rated C; John Sevier Middle School (middle), rated B+; Dobyns-Bennett High School (high), rated A-. All sit in Kingsport City School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 421 Union St, Kingsport, TN compare to other homes in Kingsport 37660?

Among the 15,855 homes in Kingsport 37660, it is worth more than 40% of them ($191,987 against a typical $221,237), its price per square foot is higher than 33% of them ($141 against a typical $161), it is bigger than 52% of them (1,363 ft² against a typical 1,344 ft²), its lot is bigger than 37% of them (0.31 ac against a typical 0.38 ac) and it is newer than 27% of them (1950 against a typical 1968). Measured against all of Sullivan County, it is worth more than 30% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

More homes on Union St

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Assigned schools

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