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Single Family ResidenceResidential
$6,376,630$706 / 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 94How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026

20 XAVIER CT

ALAMO, CA 94507
3
Beds
5.5
Baths
9,027 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.
0.6 ac
Lot SizeThe size of the land the home sits on, from county records.
2023
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
18
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
5
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$6.4M
$6M low$6.7M high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$66,080 (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.$6,102,374 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$1,910,174
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$4,192,200
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$5,867,720

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyCONTRA COSTA
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.2024
Lot (acres)The size of the land the home sits on, from county records.0.60
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.Yes

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Rancho Romero Elementary SchoolA
Elementary · Grades KG–5 · 0.5 mi
H
San Ramon High SchoolA+
High · Grades 9–12 · 1.1 mi
M
Stone Valley Middle SchoolA+
Middle · Grades 6–8 · 1.4 mi

District: San Ramon Valley Unified School District

Neighborhood · ZIP 94507These 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.48
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 100.567

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.44%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.8%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.13,817
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,241 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$216,734
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$278,668
Average tempThe average temperature here across a full year.58°F
Annual precipHow much rain and melted snow falls here in a typical year.23 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

20 Xavier 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.

  • Among the most valuable homes in Alamo 94507
  • Costs more per square foot than 82% of homes in Contra Costa County
  • Among the largest homes in Contra Costa County
  • Has a bigger lot than 94% of homes in Contra Costa County
  • Among the newest homes in Alamo 94507

What homes are worth in Alamo 94507

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

This home
$1.1M$5M

This home is worth more than almost all homes in Alamo 94507.

How it measures up in Alamo 94507

The dot is this home. The mark in the middle is the typical home in Alamo 94507.

Estimated value$6,376,630
CheaperTypical $2,450,471Pricier

Pricier than almost all homes nearby

Price per ft²$706
CheaperTypical $784Pricier

Pricier than 25% of homes nearby

Living area9,027 ft²
SmallerTypical 3,110 ft²Bigger

Bigger than almost all homes nearby

Lot size0.6 ac
SmallerTypical 0.51 acBigger

Bigger than 66% of homes nearby

Year built2023
OlderTypical 1977Newer

Newer than almost all homes nearby

How 20 Xavier Ct ranks against every home in each area.
MeasureThis homeAlamo 94507Contra Costa County
Estimated valuepricier than$6,376,630almost all homesalmost all homes
Price per ft²pricier than$70625% of homes82% of homes
Living areabigger than9,027 ft²almost all homesalmost all homes
Lot sizebigger than0.6 ac66% of homes94% of homes
Year builtnewer than2023almost all homesalmost all homes

About 20 Xavier Ct

How much is 20 Xavier Ct, Alamo, CA worth?

The TopHap Estimate for 20 Xavier Ct, Alamo, CA is $6,376,630 as of Aug 30, 2026. The likely range is $6,006,238 to $6,747,022. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 20 Xavier Ct, Alamo, CA last sell?

20 Xavier Ct, Alamo, CA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 20 Xavier Ct, Alamo, CA?

20 Xavier Ct, Alamo, CA has 3 bedrooms, 5.5 bathrooms, 9,027 square feet of living space and a 0.60-acre lot.

When was 20 Xavier Ct, Alamo, CA built?

20 Xavier Ct, Alamo, CA was built in 2023, making it 3 years old. The building has 2 stories.

What schools serve 20 Xavier Ct, Alamo, CA?

20 Xavier Ct, Alamo, CA is assigned to Rancho Romero Elementary School (elementary), rated A; San Ramon High School (high), rated A+; Stone Valley Middle School (middle), rated A+. All sit in San Ramon Valley Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 20 Xavier Ct, Alamo, CA compare to other homes in Alamo 94507?

Among the 5,469 homes in Alamo 94507, it is worth more than almost all of them ($6,376,630 against a typical $2,450,471), its price per square foot is higher than 25% of them ($706 against a typical $784), it is bigger than almost all of them (9,027 ft² against a typical 3,110 ft²), its lot is bigger than 66% of them (0.6 ac against a typical 0.51 ac) and it is newer than almost all of them (2023 against a typical 1977). Measured against all of Contra Costa County, it is worth more than almost all 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 20 Xavier Ct, Alamo, CA?

The 2025 property tax bill for 20 Xavier Ct, Alamo, CA was $66,080. The county assessed it at $6,102,374.

More homes on Xavier Ct

Closest homes

More homes in Alamo 94507

Assigned schools

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