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Single Family ResidenceResidential
$703,060$703 / 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 96How 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 $450,000 on Jan 27, 2006

18311 COMPANARIO DR

ROWLAND HEIGHTS, CA 91748
3
Beds
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.
0.15 ac
Lot SizeThe size of the land the home sits on, from county records.
1958
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
7
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$703K
$673K low$733K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$450,000 · Jan 27, 2006

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,293 (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.$569,789 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$455,922
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$113,867
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$558,620

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.Ranch
CountyLOS ANGELES
Lot (acres)The size of the land the home sits on, from county records.0.15
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Rock / Gravel
HeatingThe type of heating system in the home.Floor/Wall Furnace
CoolingThe type of cooling or air conditioning in the home.Window A/C
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(11)

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
Jellick Elementary SchoolC+
Elementary · Grades KG–6 · 0.3 mi
M
Alvarado Intermediate SchoolB
Middle · Grades 7–8 · 0.7 mi
H
John A. Rowland High SchoolA-
High · Grades 9–12 · 1.3 mi

District: Rowland Unified School District

Neighborhood · ZIP 91748These 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.60
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.108
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.400

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.28%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.9.6%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.7%
PopulationHow many people live in this area.41,340
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,384 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$79,796
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$99,738
Average tempThe average temperature here across a full year.64°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

18311 Companario Dr 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 88% of homes in Rowland Heights 91748
  • Costs more per square foot than 98% of homes in Rowland Heights 91748
  • Smaller than 95% of homes in Rowland Heights 91748
  • Has a smaller lot than 72% of homes in Rowland Heights 91748
  • Older than 98% of homes in Rowland Heights 91748

What homes are worth in Rowland Heights 91748

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

This home
$436K$1.9M

This home is worth more than 12% of homes in Rowland Heights 91748.

How it measures up in Rowland Heights 91748

The dot is this home. The mark in the middle is the typical home in Rowland Heights 91748.

Estimated value$703,060
CheaperTypical $920,965Pricier

Pricier than 12% of homes nearby

Price per ft²$703
CheaperTypical $523Pricier

Pricier than 98% of homes nearby

Living area1,000 ft²
SmallerTypical 1,742 ft²Bigger

Bigger than 5% of homes nearby

Lot size0.15 ac
SmallerTypical 0.17 acBigger

Bigger than 28% of homes nearby

Year built1958
OlderTypical 1973Newer

Newer than 2% of homes nearby

How 18311 Companario Dr ranks against every home in each area.
MeasureThis homeRowland Heights 91748Los Angeles County
Estimated valuepricier than$703,06012% of homes32% of homes
Price per ft²pricier than$70398% of homes73% of homes
Living areabigger than1,000 ft²5% of homes12% of homes
Lot sizebigger than0.15 ac28% of homes35% of homes
Year builtnewer than19582% of homes53% of homes

About 18311 Companario Dr

How much is 18311 Companario Dr, Rowland Heights, CA worth?

The TopHap Estimate for 18311 Companario Dr, Rowland Heights, CA is $703,060 as of Sep 24, 2026. The likely range is $672,628 to $733,492. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18311 Companario Dr, Rowland Heights, CA last sell?

18311 Companario Dr, Rowland Heights, CA last sold on Jan 27, 2006 for $450,000, according to the county's recorded deed. TopHap holds 5 recorded sales for this parcel.

How big is 18311 Companario Dr, Rowland Heights, CA?

18311 Companario Dr, Rowland Heights, CA has 3 bedrooms, 1 bathrooms, 1,000 square feet of living space and a 0.15-acre lot.

When was 18311 Companario Dr, Rowland Heights, CA built?

18311 Companario Dr, Rowland Heights, CA was built in 1958, making it 68 years old. It is a ranch home. The building has 1 story.

What schools serve 18311 Companario Dr, Rowland Heights, CA?

18311 Companario Dr, Rowland Heights, CA is assigned to Jellick Elementary School (elementary), rated C+; Alvarado Intermediate School (middle), rated B; John A. Rowland High School (high), rated A-. All sit in Rowland Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 18311 Companario Dr, Rowland Heights, CA compare to other homes in Rowland Heights 91748?

Among the 10,791 homes in Rowland Heights 91748, it is worth more than 12% of them ($703,060 against a typical $920,965), its price per square foot is higher than 98% of them ($703 against a typical $523), it is bigger than 5% of them (1,000 ft² against a typical 1,742 ft²), its lot is bigger than 28% of them (0.15 ac against a typical 0.17 ac) and it is newer than 2% of them (1958 against a typical 1973). Measured against all of Los Angeles County, it is worth more than 32% 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 18311 Companario Dr, Rowland Heights, CA?

The 2025 property tax bill for 18311 Companario Dr, Rowland Heights, CA was $7,293. The county assessed it at $569,789.

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