Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$789,877$587 / 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 Aug 30, 2026
Last sold for $475,000 on Jan 11, 2019

340 HELENA ST

LOS ALAMOS, CA 93440
3
Beds
2
Baths
1,346 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.
1959
Year BuiltThe year the home was originally built, according to county records.

Valuation

$790K
$749K low$831K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$475,000 · Jan 11, 2019

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,926 (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.$742,845 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$424,483
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$318,362
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$728,280

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.45
56
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
62
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
20
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
32
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
56
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.19 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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.1 percent flood zone

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountySANTA BARBARA
Lot (acres)The size of the land the home sits on, from county records.0.11
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(10)

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
Olga Reed School K-8B+
Elementary · Grades KG–8 · 0.2 mi
H
Ernest Righetti High SchoolB-
High · Grades 9–12 · 12.7 mi

District: Santa Maria Joint Union High School District

Neighborhood · ZIP 93440These 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.83
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.87
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.403

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.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.12%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.9.2%
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.830
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.53 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$68,124
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$89,493
Average tempThe average temperature here across a full year.58°F
Annual precipHow much rain and melted snow falls here in a typical year.18 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.75%

Owner Tools

Do you own this home?
Claim this home

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

340 Helena 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 less than 73% of homes in Los Alamos 93440
  • Costs more per square foot than 71% of homes in Los Alamos 93440
  • Smaller than 73% of homes in Los Alamos 93440
  • Has a smaller lot than 76% of homes in Santa Barbara County
  • Older than 84% of homes in Los Alamos 93440

What homes are worth in Los Alamos 93440

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

This home
$490K$1.7M

This home is worth more than 27% of homes in Los Alamos 93440.

How it measures up in Los Alamos 93440

The dot is this home. The mark in the middle is the typical home in Los Alamos 93440.

Estimated value$789,877
CheaperTypical $916,313Pricier

Pricier than 27% of homes nearby

Price per ft²$587
CheaperTypical $541Pricier

Pricier than 71% of homes nearby

Living area1,346 ft²
SmallerTypical 1,652 ft²Bigger

Bigger than 27% of homes nearby

Lot size0.11 ac
SmallerTypical 0.2 acBigger

Bigger than 25% of homes nearby

Year built1959
OlderTypical 1994Newer

Newer than 16% of homes nearby

How 340 Helena St ranks against every home in each area.
MeasureThis homeLos Alamos 93440Santa Barbara County
Estimated valuepricier than$789,87727% of homes45% of homes
Price per ft²pricier than$58771% of homes52% of homes
Living areabigger than1,346 ft²27% of homes34% of homes
Lot sizebigger than0.11 ac25% of homes24% of homes
Year builtnewer than195916% of homes25% of homes

About 340 Helena St

How much is 340 Helena St, Los Alamos, CA worth?

The TopHap Estimate for 340 Helena St, Los Alamos, CA is $789,877 as of Aug 30, 2026. The likely range is $748,741 to $831,013. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 340 Helena St, Los Alamos, CA last sell?

340 Helena St, Los Alamos, CA last sold on Jan 11, 2019 for $475,000, according to the county's recorded deed. TopHap holds 4 recorded sales for this parcel.

How big is 340 Helena St, Los Alamos, CA?

340 Helena St, Los Alamos, CA has 3 bedrooms, 2 bathrooms, 1,346 square feet of living space and a 0.11-acre lot.

When was 340 Helena St, Los Alamos, CA built?

340 Helena St, Los Alamos, CA was built in 1959, making it 67 years old.

What schools serve 340 Helena St, Los Alamos, CA?

340 Helena St, Los Alamos, CA is assigned to Olga Reed School K-8 (elementary), rated B+; Ernest Righetti High School (high), rated B-. All sit in Santa Maria Joint Union High School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 340 Helena St, Los Alamos, CA compare to other homes in Los Alamos 93440?

Among the 614 homes in Los Alamos 93440, it is worth more than 27% of them ($789,877 against a typical $916,313), its price per square foot is higher than 71% of them ($587 against a typical $541), it is bigger than 27% of them (1,346 ft² against a typical 1,652 ft²), its lot is bigger than 25% of them (0.11 ac against a typical 0.2 ac) and it is newer than 16% of them (1959 against a typical 1994). Measured against all of Santa Barbara County, it is worth more than 45% 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 340 Helena St, Los Alamos, CA?

The 2025 property tax bill for 340 Helena St, Los Alamos, CA was $7,926. The county assessed it at $742,845.

More homes on Helena St

Closest homes

More homes in Los Alamos 93440

Assigned schools

Explore the area

See this home in context

Open 340 Helena St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map