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Rural ResidenceResidential
$1,200,405$437 / 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 89How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026

540 LOS ALTOS CT

SANTA ROSA, CA 95403
4
Beds
3
Baths
2,750 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.
0.96 ac
Lot SizeThe size of the land the home sits on, from county records.
1989
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
8
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

$1.2M
$1.1M low$1.3M high
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$614,705
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$491,764
Loan-to-ValueHow much is still owed on the home compared to what it is worth. 80% means loans equal 80% of our estimate, so it shifts when the estimate does.50%
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$322,700
SCME MORTGAGE BANKERS INC · recorded Oct 21, 2003
2nd MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$263,000
CALIBER HOME LOANS INC

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$9,501 (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.$686,347 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$208,290
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$478,057
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$686,347

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.21
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
78
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
27
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
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.Rural Residence
CountySonoma
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.1990
Lot (acres)The size of the land the home sits on, from county records.0.96
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
HeatingThe type of heating system in the home.None
CoolingThe type of cooling or air conditioning in the home.Yes
FireplaceWhether the home has a fireplace, and what kind.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached

Transaction History(3)

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
San Miguel Elementary SchoolB+
Elementary · Grades KG–6 · 0.5 mi
H
Piner High SchoolC
High · Grades 9–12 · 3.7 mi
M
Hilliard Comstock Middle SchoolF
Middle · Grades 7–8 · 3.9 mi

District: Santa Rosa High School District

Neighborhood · ZIP 95403These 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.104
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.86
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.511

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.19%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.9.4%
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.43,826
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,997 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$96,508
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$119,029
Average tempThe average temperature here across a full year.58°F
Annual precipHow much rain and melted snow falls here in a typical year.37 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.78%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
Company ownedWhether the owner is a company or trust rather than a person.Yes

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

540 Los Altos 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 93% of homes in Santa Rosa 95403
  • Costs less per square foot than 69% of homes in Sonoma County
  • Bigger than 92% of homes in Santa Rosa 95403
  • Has a bigger lot than 89% of homes in Santa Rosa 95403
  • Newer than 71% of homes in Sonoma County

What homes are worth in Santa Rosa 95403

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

This home
$303K$2M

This home is worth more than 93% of homes in Santa Rosa 95403.

How it measures up in Santa Rosa 95403

The dot is this home. The mark in the middle is the typical home in Santa Rosa 95403.

Estimated value$1,200,405
CheaperTypical $710,150Pricier

Pricier than 93% of homes nearby

Price per ft²$437
CheaperTypical $439Pricier

Pricier than 49% of homes nearby

Living area2,750 ft²
SmallerTypical 1,635 ft²Bigger

Bigger than 92% of homes nearby

Lot size0.96 ac
SmallerTypical 0.15 acBigger

Bigger than 89% of homes nearby

Year built1989
OlderTypical 1989Newer

Newer than 51% of homes nearby

How 540 Los Altos Ct ranks against every home in each area.
MeasureThis homeLarkfield-WikiupSanta Rosa 95403Sonoma County
Estimated valuepricier than$1,200,40586% of homes93% of homes83% of homes
Price per ft²pricier than$43741% of homes49% of homes31% of homes
Living areabigger than2,750 ft²89% of homes92% of homes92% of homes
Lot sizebigger than0.96 ac81% of homes89% of homes83% of homes
Year builtnewer than198967% of homes51% of homes71% of homes

About 540 Los Altos Ct

How much is 540 Los Altos Ct, Santa Rosa, CA worth?

The TopHap Estimate for 540 Los Altos Ct, Santa Rosa, CA is $1,200,405 as of Jul 14, 2026. The likely range is $1,066,452 to $1,334,358. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

How big is 540 Los Altos Ct, Santa Rosa, CA?

540 Los Altos Ct, Santa Rosa, CA has 4 bedrooms, 3 bathrooms, 2,750 square feet of living space and a 0.96-acre lot.

When was 540 Los Altos Ct, Santa Rosa, CA built?

540 Los Altos Ct, Santa Rosa, CA was built in 1989, making it 37 years old. The building has 2 stories.

What schools serve 540 Los Altos Ct, Santa Rosa, CA?

540 Los Altos Ct, Santa Rosa, CA is assigned to San Miguel Elementary School (elementary), rated B+; Piner High School (high), rated C; Hilliard Comstock Middle School (middle), rated F. All sit in Santa Rosa High School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 540 Los Altos Ct, Santa Rosa, CA compare to other homes in Santa Rosa 95403?

Among the 12,533 homes in Santa Rosa 95403, it is worth more than 93% of them ($1,200,405 against a typical $710,150), its price per square foot is higher than 49% of them ($437 against a typical $439), it is bigger than 92% of them (2,750 ft² against a typical 1,635 ft²), its lot is bigger than 89% of them (0.96 ac against a typical 0.15 ac) and it is newer than 51% of them (1989 against a typical 1989). Measured against all of Sonoma County, it is worth more than 83% 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 540 Los Altos Ct, Santa Rosa, CA?

The 2025 property tax bill for 540 Los Altos Ct, Santa Rosa, CA was $9,501. The county assessed it at $686,347.

Closest homes

More homes in Santa Rosa 95403

Assigned schools

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