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Single Family ResidenceResidential
$2,554,713$874 / 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 91How 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

1817 SPRING ST

SAINT HELENA, CA 94574
3
Beds
3.5
Baths
2,922 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.
1.17 ac
Lot SizeThe size of the land the home sits on, from county records.
1888
Year BuiltThe year the home was originally built, according to county records.
8
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$2.6M
$2.3M low$2.8M high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$15,583 (2026)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$1,464,854 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$624,813
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$840,041
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,436,132
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,464,854

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.41
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
63
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
39
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
70
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
36
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.0.2 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
CountyNAPA
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.1950
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Yes
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.Yes

Transaction History(2)

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
Saint Helena Primary School
Elementary · Grades KG–2 · 0.4 mi
H
St. Helena High SchoolB+
High · Grades 9–12 · 0.5 mi
M
Robert Louis Stevenson Intermediate SchoolB
Middle · Grades 6–8 · 0.7 mi

District: St. Helena Unified School District

Neighborhood · ZIP 94574These 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.136
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 100.267

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.80%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.31%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.0%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.7,889
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.61 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$128,776
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$218,903
Average tempThe average temperature here across a full year.59°F
Annual precipHow much rain and melted snow falls here in a typical year.35 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

1817 Spring 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 more than 96% of homes in Napa County
  • Costs more per square foot than 90% of homes in Napa County
  • Bigger than 89% of homes in Napa County
  • Has a bigger lot than 88% of homes in Napa County
  • Among the oldest homes in Napa County

What homes are worth in Saint Helena 94574

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

This home
$608K$8.4M

This home is worth more than 77% of homes in Saint Helena 94574.

How it measures up in Saint Helena 94574

The dot is this home. The mark in the middle is the typical home in Saint Helena 94574.

Estimated value$2,554,713
CheaperTypical $1,623,808Pricier

Pricier than 77% of homes nearby

Price per ft²$874
CheaperTypical $861Pricier

Pricier than 52% of homes nearby

Living area2,922 ft²
SmallerTypical 1,943 ft²Bigger

Bigger than 83% of homes nearby

Lot size1.17 ac
SmallerTypical 0.27 acBigger

Bigger than 77% of homes nearby

Year built1888
OlderTypical 1966Newer

Older than almost all homes nearby

How 1817 Spring St ranks against every home in each area.
MeasureThis homeSaint Helena 94574Napa County
Estimated valuepricier than$2,554,71377% of homes96% of homes
Price per ft²pricier than$87452% of homes90% of homes
Living areabigger than2,922 ft²83% of homes89% of homes
Lot sizebigger than1.17 ac77% of homes88% of homes
Year builtnewer than1888almost no homesalmost no homes

About 1817 Spring St

How much is 1817 Spring St, Saint Helena, CA worth?

The TopHap Estimate for 1817 Spring St, Saint Helena, CA is $2,554,713 as of Jul 14, 2026. The likely range is $2,315,989 to $2,793,437. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 1817 Spring St, Saint Helena, CA last sell?

1817 Spring St, Saint Helena, CA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 1817 Spring St, Saint Helena, CA?

1817 Spring St, Saint Helena, CA has 3 bedrooms, 3.5 bathrooms and 2,922 square feet of living space.

When was 1817 Spring St, Saint Helena, CA built?

1817 Spring St, Saint Helena, CA was built in 1888, making it 138 years old.

What schools serve 1817 Spring St, Saint Helena, CA?

1817 Spring St, Saint Helena, CA is assigned to Saint Helena Primary School (elementary); St. Helena High School (high), rated B+; Robert Louis Stevenson Intermediate School (middle), rated B. All sit in St. Helena Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 1817 Spring St, Saint Helena, CA compare to other homes in Saint Helena 94574?

Among the 2,836 homes in Saint Helena 94574, it is worth more than 77% of them ($2,554,713 against a typical $1,623,808), its price per square foot is higher than 52% of them ($874 against a typical $861), it is bigger than 83% of them (2,922 ft² against a typical 1,943 ft²), its lot is bigger than 77% of them (1.17 ac against a typical 0.27 ac) and it is newer than almost none of them (1888 against a typical 1966). Measured against all of Napa County, it is worth more than 96% 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 1817 Spring St, Saint Helena, CA?

The 2026 property tax bill for 1817 Spring St, Saint Helena, CA was $15,583. The county assessed it at $1,464,854.

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