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Single Family ResidenceResidential
$1,032,363$394 / 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 93How 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 $464,500 on May 12, 2004

27889 MARIPOSA ST

VALENCIA, CA 91355
4
Beds
3
Baths
2,621 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.
0.11 ac
Lot SizeThe size of the land the home sits on, from county records.
2004
Year BuiltThe year the home was originally built, according to county records.

Valuation

$1M
$959K low$1.1M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$464,500 · May 12, 2004

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$9,975 (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.$673,611 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$275,532
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$398,079
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$660,404

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyLOS ANGELES
Lot (acres)The size of the land the home sits on, from county records.0.11
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Central
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.

H
Valencia High SchoolA
High · Grades 9–12 · 0.2 mi
M
Rio Norte Junior High SchoolA
Middle · Grades 7–8 · 1.3 mi
E
Bridgeport Elementary SchoolA
Elementary · Grades KG–6 · 1.4 mi

District: William S. Hart Union High School District (9-12)

Neighborhood · ZIP 91355These 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.72
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.88
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.498

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.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.32%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.8%
PopulationHow many people live in this area.38,221
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,851 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$109,404
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$141,382
Average tempThe average temperature here across a full year.63°F
Annual precipHow much rain and melted snow falls here in a typical year.17 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.73%

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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

27889 Mariposa 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 88% of homes in Valencia 91355
  • Costs less per square foot than 89% of homes in Los Angeles County
  • Bigger than 91% of homes in Valencia 91355
  • Has a smaller lot than 91% of homes in Los Angeles County
  • Among the newest homes in Copperhill

What homes are worth in Valencia 91355

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

This home
$353K$1.5M

This home is worth more than 88% of homes in Valencia 91355.

How it measures up in Valencia 91355

The dot is this home. The mark in the middle is the typical home in Valencia 91355.

Estimated value$1,032,363
CheaperTypical $782,029Pricier

Pricier than 88% of homes nearby

Price per ft²$394
CheaperTypical $490Pricier

Pricier than 12% of homes nearby

Living area2,621 ft²
SmallerTypical 1,537 ft²Bigger

Bigger than 91% of homes nearby

Lot size0.11 ac
SmallerTypical 0.15 acBigger

Bigger than 20% of homes nearby

Year built2004
OlderTypical 1984Newer

Newer than almost all homes nearby

How 27889 Mariposa St ranks against every home in each area.
MeasureThis homeCopperhillValencia 91355Los Angeles County
Estimated valuepricier than$1,032,36373% of homes88% of homes67% of homes
Price per ft²pricier than$39425% of homes12% of homes11% of homes
Living areabigger than2,621 ft²75% of homes91% of homes84% of homes
Lot sizebigger than0.11 ac24% of homes20% of homes9% of homes
Year builtnewer than2004almost all homesalmost all homes93% of homes

About 27889 Mariposa St

How much is 27889 Mariposa St, Valencia, CA worth?

The TopHap Estimate for 27889 Mariposa St, Valencia, CA is $1,032,363 as of Oct 21, 2026. The likely range is $958,964 to $1,105,762. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 27889 Mariposa St, Valencia, CA last sell?

27889 Mariposa St, Valencia, CA last sold on May 12, 2004 for $464,500, according to the county's recorded deed.

How big is 27889 Mariposa St, Valencia, CA?

27889 Mariposa St, Valencia, CA has 4 bedrooms, 3 bathrooms, 2,621 square feet of living space and a 0.11-acre lot.

When was 27889 Mariposa St, Valencia, CA built?

27889 Mariposa St, Valencia, CA was built in 2004, making it 22 years old.

What schools serve 27889 Mariposa St, Valencia, CA?

27889 Mariposa St, Valencia, CA is assigned to Valencia High School (high), rated A; Rio Norte Junior High School (middle), rated A; Bridgeport Elementary School (elementary), rated A. All sit in William S. Hart Union High School District (9-12). Attendance boundaries change — confirm with the district before relying on an assignment.

How does 27889 Mariposa St, Valencia, CA compare to other homes in Valencia 91355?

Among the 10,505 homes in Valencia 91355, it is worth more than 88% of them ($1,032,363 against a typical $782,029), its price per square foot is higher than 12% of them ($394 against a typical $490), it is bigger than 91% of them (2,621 ft² against a typical 1,537 ft²), its lot is bigger than 20% of them (0.11 ac against a typical 0.15 ac) and it is newer than almost all of them (2004 against a typical 1984). Measured against all of Los Angeles County, it is worth more than 67% 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 27889 Mariposa St, Valencia, CA?

The 2025 property tax bill for 27889 Mariposa St, Valencia, CA was $9,975. The county assessed it at $673,611.

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