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Single Family ResidenceResidential
$773,544$559 / 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 90How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026
Last sold for $364,090 on Nov 3, 2004

620 CASSWALL ST

NAPA, CA 94558
3
Beds
2
Baths
1,384 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.
0.14 ac
Lot SizeThe size of the land the home sits on, from county records.
1957
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
7
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

$774K
$696K low$851K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$364,090 · Nov 3, 2004

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,597 (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.$696,658 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$319,891
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$376,767
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$682,999
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$696,658

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.40
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
75
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.
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.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Colonial
CountyNAPA
Lot (acres)The size of the land the home sits on, from county records.0.14
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Wood Shingle
HeatingThe type of heating system in the home.Central
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(4)

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
Snow Elementary SchoolD-
Elementary · Grades KG–5 · 0.4 mi
H
Napa High SchoolC
High · Grades 9–12 · 2.0 mi
M
Silverado Middle SchoolD
Middle · Grades 6–8 · 2.7 mi

District: Napa Valley Unified School District

Neighborhood · ZIP 94558These 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.92
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.91
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.401

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.91%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.23%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.1%
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.67,018
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.155 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$105,998
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$137,362
Average tempThe average temperature here across a full year.59°F
Annual precipHow much rain and melted snow falls here in a typical year.30 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

620 Casswall 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 73% of homes in Coventry Manor
  • Costs more per square foot than 78% of homes in Coventry Manor
  • Smaller than 68% of homes in Napa 94558
  • Has a smaller lot than 75% of homes in Napa 94558
  • Older than 76% of homes in Napa 94558

What homes are worth in Napa 94558

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

This home
$423K$3.7M

This home is worth more than 40% of homes in Napa 94558.

How it measures up in Napa 94558

The dot is this home. The mark in the middle is the typical home in Napa 94558.

Estimated value$773,544
CheaperTypical $852,512Pricier

Pricier than 40% of homes nearby

Price per ft²$559
CheaperTypical $528Pricier

Pricier than 62% of homes nearby

Living area1,384 ft²
SmallerTypical 1,652 ft²Bigger

Bigger than 32% of homes nearby

Lot size0.14 ac
SmallerTypical 0.18 acBigger

Bigger than 25% of homes nearby

Year built1957
OlderTypical 1972Newer

Newer than 24% of homes nearby

How 620 Casswall St ranks against every home in each area.
MeasureThis homeCoventry ManorNapa 94558Napa County
Estimated valuepricier than$773,54473% of homes40% of homes42% of homes
Price per ft²pricier than$55978% of homes62% of homes57% of homes
Living areabigger than1,384 ft²60% of homes32% of homes33% of homes
Lot sizebigger than0.14 ac46% of homes25% of homes26% of homes
Year builtnewer than195741% of homes24% of homes30% of homes

About 620 Casswall St

How much is 620 Casswall St, Napa, CA worth?

The TopHap Estimate for 620 Casswall St, Napa, CA is $773,544 as of Sep 24, 2026. The likely range is $696,291 to $850,797. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 620 Casswall St, Napa, CA last sell?

620 Casswall St, Napa, CA last sold on Nov 3, 2004 for $364,090, according to the county's recorded deed.

How big is 620 Casswall St, Napa, CA?

620 Casswall St, Napa, CA has 3 bedrooms, 2 bathrooms, 1,384 square feet of living space and a 0.14-acre lot.

When was 620 Casswall St, Napa, CA built?

620 Casswall St, Napa, CA was built in 1957, making it 69 years old. It is a colonial home. The building has 1 story.

What schools serve 620 Casswall St, Napa, CA?

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

How does 620 Casswall St, Napa, CA compare to other homes in Napa 94558?

Among the 20,709 homes in Napa 94558, it is worth more than 40% of them ($773,544 against a typical $852,512), its price per square foot is higher than 62% of them ($559 against a typical $528), it is bigger than 32% of them (1,384 ft² against a typical 1,652 ft²), its lot is bigger than 25% of them (0.14 ac against a typical 0.18 ac) and it is newer than 24% of them (1957 against a typical 1972). Measured against all of Napa County, it is worth more than 42% 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 620 Casswall St, Napa, CA?

The 2026 property tax bill for 620 Casswall St, Napa, CA was $8,597. The county assessed it at $696,658.

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