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Duplex (2 Units, Any Combination)Residential

306 RANDOLPH ST

NAPA, CA 94559
6
Beds
3
Baths
3,788 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.
0.21 ac
Lot SizeThe size of the land the home sits on, from county records.
1895
Year BuiltThe year the home was originally built, according to county records.
3
StoriesHow many floors the home has above ground.
3
ParkingThe number of parking spaces on the property, including the garage.

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,228 (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.$358,036 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$111,701
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$246,335
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$351,016
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$358,036

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.34
45
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
1
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
37
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
51
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.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.13 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.11%
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.Duplex (2 Units, Any Combination)
StyleThe architectural style of the home, such as ranch or colonial.Duplex Single
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.1940
Lot (acres)The size of the land the home sits on, from county records.0.21
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
HeatingThe type of heating system in the home.Yes
CoolingThe type of cooling or air conditioning in the home.None
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
PoolWhether the property has a pool, and what kind, such as in-ground.Yes

Transaction History(6)

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
Shearer Elementary SchoolD-
Elementary · Grades KG–5 · 0.2 mi
M
Silverado Middle SchoolD
Middle · Grades 6–8 · 1.4 mi
H
Napa High SchoolC
High · Grades 9–12 · 1.5 mi

District: Napa Valley Unified School District

Neighborhood · ZIP 94559These 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.97
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 100.400

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.92%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.21%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.11%
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.25,170
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.628 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$87,352
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$122,518
Average tempThe average temperature here across a full year.58°F
Annual precipHow much rain and melted snow falls here in a typical year.25 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

306 Randolph 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.

  • Bigger than 98% of homes in Napa 94559
  • Has a bigger lot than 87% of homes in Napa Abajo
  • Among the oldest homes in Napa County

How it measures up in Napa 94559

The dot is this home. The mark in the middle is the typical home in Napa 94559.

Living area3,788 ft²
SmallerTypical 1,434 ft²Bigger

Bigger than 98% of homes nearby

Lot size0.21 ac
SmallerTypical 0.15 acBigger

Bigger than 80% of homes nearby

Year built1895
OlderTypical 1955Newer

Newer than 2% of homes nearby

How 306 Randolph St ranks against every home in each area.
MeasureThis homeNapa AbajoNapa 94559Napa County
Living areabigger than3,788 ft²95% of homes98% of homes97% of homes
Lot sizebigger than0.21 ac87% of homes80% of homes63% of homes
Year builtnewer than18959% of homes2% of homesalmost no homes

About 306 Randolph St

When did 306 Randolph St, Napa, CA last sell?

306 Randolph St, Napa, CA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 306 Randolph St, Napa, CA?

306 Randolph St, Napa, CA has 6 bedrooms, 3 bathrooms, 3,788 square feet of living space and a 0.21-acre lot.

When was 306 Randolph St, Napa, CA built?

306 Randolph St, Napa, CA was built in 1895, making it 131 years old. It is a duplex single home. The building has 3 stories.

What schools serve 306 Randolph St, Napa, CA?

306 Randolph St, Napa, CA is assigned to Shearer Elementary School (elementary), rated D-; Silverado Middle School (middle), rated D; Napa High School (high), rated C. All sit in Napa Valley Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 306 Randolph St, Napa, CA compare to other homes in Napa 94559?

Among the 7,763 homes in Napa 94559, it is bigger than 98% of them (3,788 ft² against a typical 1,434 ft²), its lot is bigger than 80% of them (0.21 ac against a typical 0.15 ac) and it is newer than 2% of them (1895 against a typical 1955). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 306 Randolph St, Napa, CA?

The 2026 property tax bill for 306 Randolph St, Napa, CA was $5,228. The county assessed it at $358,036.

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