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Single Family ResidenceResidential
$603,349$222 / 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
Last sold for $600,000 on Sep 17, 2025

15 KNOLLS CT

COPPEROPOLIS, CA 95228
4
Beds
3
Baths
2,723 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.
0.43 ac
Lot SizeThe size of the land the home sits on, from county records.
2003
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
4
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$603K
$541K low$666K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$600,000 · Sep 17, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$9,565 (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.$667,468 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$152,647
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$514,821
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$654,381

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.8 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.6%
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
StyleThe architectural style of the home, such as ranch or colonial.Modern
CountyCALAVERAS
Lot (acres)The size of the land the home sits on, from county records.0.43
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
CoolingThe type of cooling or air conditioning in the home.Central
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(6)

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
Copperopolis Elementary SchoolC-
Elementary · Grades KG–6 · 4.8 mi
M
Mark Twain Elementary SchoolD
Middle · Grades KG–8 · 12.2 mi
H
Bret Harte Union High SchoolB-
High · Grades 9–12 · 12.5 mi

District: Bret Harte Union High School District

Neighborhood · ZIP 95228These 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.131
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.82
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.79

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.72%
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.7.3%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.4,554
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.51 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$94,159
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$111,153
Average tempThe average temperature here across a full year.61°F
Annual precipHow much rain and melted snow falls here in a typical year.24 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.78%

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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

15 Knolls Ct 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 87% of homes in Calaveras County
  • Costs less per square foot than 85% of homes in Copperopolis 95228
  • Bigger than 93% of homes in Calaveras County
  • Newer than 86% of homes in Calaveras County

What homes are worth in Copperopolis 95228

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

This home
$272K$2.2M

This home is worth more than 61% of homes in Copperopolis 95228.

How it measures up in Copperopolis 95228

The dot is this home. The mark in the middle is the typical home in Copperopolis 95228.

Estimated value$603,349
CheaperTypical $532,119Pricier

Pricier than 61% of homes nearby

Price per ft²$222
CheaperTypical $265Pricier

Pricier than 15% of homes nearby

Living area2,723 ft²
SmallerTypical 1,840 ft²Bigger

Bigger than 84% of homes nearby

Lot size0.43 ac
SmallerTypical 0.33 acBigger

Bigger than 60% of homes nearby

Year built2003
OlderTypical 1996Newer

Newer than 66% of homes nearby

How 15 Knolls Ct ranks against every home in each area.
MeasureThis homeCopperopolis 95228Calaveras County
Estimated valuepricier than$603,34961% of homes87% of homes
Price per ft²pricier than$22215% of homes17% of homes
Living areabigger than2,723 ft²84% of homes93% of homes
Lot sizebigger than0.43 ac60% of homes48% of homes
Year builtnewer than200366% of homes86% of homes

About 15 Knolls Ct

How much is 15 Knolls Ct, Copperopolis, CA worth?

The TopHap Estimate for 15 Knolls Ct, Copperopolis, CA is $603,349 as of Sep 24, 2026. The likely range is $541,125 to $665,573. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 15 Knolls Ct, Copperopolis, CA last sell?

15 Knolls Ct, Copperopolis, CA last sold on Sep 17, 2025 for $600,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 15 Knolls Ct, Copperopolis, CA?

15 Knolls Ct, Copperopolis, CA has 4 bedrooms, 3 bathrooms, 2,723 square feet of living space and a 0.43-acre lot.

When was 15 Knolls Ct, Copperopolis, CA built?

15 Knolls Ct, Copperopolis, CA was built in 2003, making it 23 years old. It is a modern home. The building has 1 story.

What schools serve 15 Knolls Ct, Copperopolis, CA?

15 Knolls Ct, Copperopolis, CA is assigned to Copperopolis Elementary School (elementary), rated C-; Mark Twain Elementary School (middle), rated D; Bret Harte Union High School (high), rated B-. All sit in Bret Harte Union High School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 15 Knolls Ct, Copperopolis, CA compare to other homes in Copperopolis 95228?

Among the 2,746 homes in Copperopolis 95228, it is worth more than 61% of them ($603,349 against a typical $532,119), its price per square foot is higher than 15% of them ($222 against a typical $265), it is bigger than 84% of them (2,723 ft² against a typical 1,840 ft²), its lot is bigger than 60% of them (0.43 ac against a typical 0.33 ac) and it is newer than 66% of them (2003 against a typical 1996). Measured against all of Calaveras County, it is worth more than 87% 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 15 Knolls Ct, Copperopolis, CA?

The 2025 property tax bill for 15 Knolls Ct, Copperopolis, CA was $9,565. The county assessed it at $667,468.

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