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Single Family ResidenceResidential
$1,780,423$682 / 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 95How 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

3151 MAINWAY DR

LOS ALAMITOS, CA 90720
5
Beds
3
Baths
2,610 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.
0.18 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.
6
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$1.8M
$1.7M low$1.9M high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,214 (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.$428,826 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$204,869
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$223,957
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$420,418

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyORANGE
Lot (acres)The size of the land the home sits on, from county records.0.18
HeatingThe type of heating system 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(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.

E
Hopkinson Elementary SchoolA+
Elementary · Grades KG–5 · 0.6 mi
M
Oak Middle SchoolA+
Middle · Grades 6–8 · 1.5 mi
H
Los Alamitos High SchoolA
High · Grades 9–12 · 1.9 mi

District: Los Alamitos Unified School District

Neighborhood · ZIP 90720These 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.64
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.104
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.370

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.33%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.0%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.21,327
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,707 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$132,372
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$182,538
Average tempThe average temperature here across a full year.63°F
Annual precipHow much rain and melted snow falls here in a typical year.12 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.75%

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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

3151 Mainway 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 more than 83% of homes in Los Alamitos 90720
  • Costs less per square foot than 73% of homes in Rossmoor
  • Bigger than 81% of homes in Orange County
  • Has a bigger lot than 74% of homes in Orange County
  • Older than 83% of homes in Orange County

What homes are worth in Los Alamitos 90720

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

This home
$709K$2.9M

This home is worth more than 83% of homes in Los Alamitos 90720.

How it measures up in Los Alamitos 90720

The dot is this home. The mark in the middle is the typical home in Los Alamitos 90720.

Estimated value$1,780,423
CheaperTypical $1,386,614Pricier

Pricier than 83% of homes nearby

Price per ft²$682
CheaperTypical $689Pricier

Pricier than 48% of homes nearby

Living area2,610 ft²
SmallerTypical 1,975 ft²Bigger

Bigger than 79% of homes nearby

Lot size0.18 ac
SmallerTypical 0.18 acBigger

Bigger than 63% of homes nearby

Year built1958
OlderTypical 1960Newer

Newer than 25% of homes nearby

How 3151 Mainway Dr ranks against every home in each area.
MeasureThis homeRossmoorLos Alamitos 90720Orange County
Estimated valuepricier than$1,780,42373% of homes83% of homes81% of homes
Price per ft²pricier than$68227% of homes48% of homes56% of homes
Living areabigger than2,610 ft²75% of homes79% of homes81% of homes
Lot sizebigger than0.18 ac56% of homes63% of homes74% of homes
Year builtnewer than195834% of homes25% of homes17% of homes

About 3151 Mainway Dr

How much is 3151 Mainway Dr, Los Alamitos, CA worth?

The TopHap Estimate for 3151 Mainway Dr, Los Alamitos, CA is $1,780,423 as of Sep 24, 2026. The likely range is $1,700,271 to $1,860,575. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3151 Mainway Dr, Los Alamitos, CA last sell?

3151 Mainway Dr, Los Alamitos, CA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 3151 Mainway Dr, Los Alamitos, CA?

3151 Mainway Dr, Los Alamitos, CA has 5 bedrooms, 3 bathrooms, 2,610 square feet of living space and a 0.18-acre lot.

When was 3151 Mainway Dr, Los Alamitos, CA built?

3151 Mainway Dr, Los Alamitos, CA was built in 1958, making it 68 years old. The building has 1 story.

What schools serve 3151 Mainway Dr, Los Alamitos, CA?

3151 Mainway Dr, Los Alamitos, CA is assigned to Hopkinson Elementary School (elementary), rated A+; Oak Middle School (middle), rated A+; Los Alamitos High School (high), rated A. All sit in Los Alamitos Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3151 Mainway Dr, Los Alamitos, CA compare to other homes in Los Alamitos 90720?

Among the 6,558 homes in Los Alamitos 90720, it is worth more than 83% of them ($1,780,423 against a typical $1,386,614), its price per square foot is higher than 48% of them ($682 against a typical $689), it is bigger than 79% of them (2,610 ft² against a typical 1,975 ft²), its lot is bigger than 63% of them (0.18 ac against a typical 0.18 ac) and it is newer than 25% of them (1958 against a typical 1960). Measured against all of Orange County, it is worth more than 81% 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 3151 Mainway Dr, Los Alamitos, CA?

The 2025 property tax bill for 3151 Mainway Dr, Los Alamitos, CA was $5,214. The county assessed it at $428,826.

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