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Single Family ResidenceResidential
$425,600$159 / 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 91How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026
Last sold for $494,900 on Oct 28, 2025

CARDIFF ST

UNION, KY 41091
4
Beds
2.5
Baths
2,669 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.
0.24 ac
Lot SizeThe size of the land the home sits on, from county records.
2025
Year BuiltThe year the home was originally built, according to county records.

Valuation

$426K
$386K low$466K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$494,900 · Oct 28, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$671 (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.$60,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$60,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$60,000

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.40
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
22
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
81
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
85
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
13
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.Single Family Residence
CountyBOONE
Lot (acres)The size of the land the home sits on, from county records.0.23
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(1)

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.

M
Ballyshannon Middle SchoolA
Middle · Grades 6–8 · 0.3 mi
E
Longbranch Elementary SchoolA+
Elementary · Grades KG–5 · 1.1 mi
H
Randall K. Cooper High SchoolB
High · Grades 9–12 · 1.2 mi

District: Boone County School District

Neighborhood · ZIP 41091These 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.207
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.44

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.31%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.2.7%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.6%
PopulationHow many people live in this area.26,024
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.497 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$132,353
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$149,272
Average tempThe average temperature here across a full year.54°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.55%

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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

Cardiff 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 more than 76% of homes in Boone County
  • Costs less per square foot than 84% of homes in Union 41091
  • Bigger than 85% of homes in Boone County
  • Has a smaller lot than 70% of homes in Union 41091
  • Among the newest homes in Union 41091

What homes are worth in Union 41091

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

This home
$190K$968K

This home is worth more than 49% of homes in Union 41091.

How it measures up in Union 41091

The dot is this home. The mark in the middle is the typical home in Union 41091.

Estimated value$425,600
CheaperTypical $428,276Pricier

Pricier than 49% of homes nearby

Price per ft²$159
CheaperTypical $192Pricier

Pricier than 16% of homes nearby

Living area2,669 ft²
SmallerTypical 2,246 ft²Bigger

Bigger than 67% of homes nearby

Lot size0.24 ac
SmallerTypical 0.33 acBigger

Bigger than 30% of homes nearby

Year built2025
OlderTypical 2004Newer

Newer than almost all homes nearby

How Cardiff St ranks against every home in each area.
MeasureThis homeUnion 41091Boone County
Estimated valuepricier than$425,60049% of homes76% of homes
Price per ft²pricier than$15916% of homes22% of homes
Living areabigger than2,669 ft²67% of homes85% of homes
Lot sizebigger than0.24 ac30% of homes36% of homes
Year builtnewer than2025almost all homesalmost all homes

About Cardiff St

How much is Cardiff St, Union, KY worth?

The TopHap Estimate for Cardiff St, Union, KY is $425,600 as of Oct 21, 2026. The likely range is $385,512 to $465,688. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did Cardiff St, Union, KY last sell?

Cardiff St, Union, KY last sold on Oct 28, 2025 for $494,900, according to the county's recorded deed.

How big is Cardiff St, Union, KY?

Cardiff St, Union, KY has 4 bedrooms, 2.5 bathrooms, 2,669 square feet of living space and a 0.23-acre lot.

When was Cardiff St, Union, KY built?

Cardiff St, Union, KY was built in 2025, making it 1 years old.

What schools serve Cardiff St, Union, KY?

Cardiff St, Union, KY is assigned to Ballyshannon Middle School (middle), rated A; Longbranch Elementary School (elementary), rated A+; Randall K. Cooper High School (high), rated B. All sit in Boone County School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does Cardiff St, Union, KY compare to other homes in Union 41091?

Among the 9,801 homes in Union 41091, it is worth more than 49% of them ($425,600 against a typical $428,276), its price per square foot is higher than 16% of them ($159 against a typical $192), it is bigger than 67% of them (2,669 ft² against a typical 2,246 ft²), its lot is bigger than 30% of them (0.24 ac against a typical 0.33 ac) and it is newer than almost all of them (2025 against a typical 2004). Measured against all of Boone County, it is worth more than 76% 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 Cardiff St, Union, KY?

The 2025 property tax bill for Cardiff St, Union, KY was $671. The county assessed it at $60,000.

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