Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$1,354,665$982 / 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 96How 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 $1,320,000 on Jul 3, 2023

577 SEYMOUR ST

NAPA, CA 94559
3
Beds
2
Baths
1,380 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.
0.15 ac
Lot SizeThe size of the land the home sits on, from county records.
1940
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

$1.4M
$1.3M low$1.4M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$1,320,000 · Jul 3, 2023

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$16,365 (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.$1,346,400 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$510,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$836,400
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,346,400

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.32
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
37
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
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.2000
Lot (acres)The size of the land the home sits on, from county records.0.15
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
HeatingThe type of heating system in the home.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.No
ViewThe type of view from the property, or another feature of the site that affects value.View - River

Transaction History(19)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Foreclosure Filings(3)

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 · 0.5 mi
M
Harvest Magnet Middle School
Middle · Grades 6–8 · 0.6 mi
H
Napa High SchoolB-
High · Grades 9–12 · 1.1 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%

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

577 Seymour 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 94% of homes in Fuller Park
  • Costs more per square foot than 96% of homes in Fuller Park
  • Smaller than 67% of homes in Napa County
  • Older than 90% of homes in Napa County

What homes are worth in Napa 94559

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

This home
$453K$2.8M

This home is worth more than 87% of homes in Napa 94559.

How it measures up in Napa 94559

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

Estimated value$1,354,665
CheaperTypical $800,432Pricier

Pricier than 87% of homes nearby

Price per ft²$982
CheaperTypical $597Pricier

Pricier than 96% of homes nearby

Living area1,380 ft²
SmallerTypical 1,408 ft²Bigger

Bigger than 48% of homes nearby

Lot size0.15 ac
SmallerTypical 0.15 acBigger

Bigger than 55% of homes nearby

Year built1940
OlderTypical 1955Newer

Newer than 26% of homes nearby

How 577 Seymour St ranks against every home in each area.
MeasureThis homeFuller ParkNapa 94559Napa County
Estimated valuepricier than$1,354,66594% of homes87% of homes80% of homes
Price per ft²pricier than$98296% of homes96% of homes92% of homes
Living areabigger than1,380 ft²50% of homes48% of homes33% of homes
Lot sizebigger than0.15 ac47% of homes55% of homes41% of homes
Year builtnewer than194043% of homes26% of homes10% of homes

About 577 Seymour St

How much is 577 Seymour St, Napa, CA worth?

The TopHap Estimate for 577 Seymour St, Napa, CA is $1,354,665 as of Sep 24, 2026. The likely range is $1,301,279 to $1,408,051. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 577 Seymour St, Napa, CA last sell?

577 Seymour St, Napa, CA last sold on Jul 3, 2023 for $1,320,000, according to the county's recorded deed. TopHap holds 10 recorded sales for this parcel.

How big is 577 Seymour St, Napa, CA?

577 Seymour St, Napa, CA has 3 bedrooms, 2 bathrooms, 1,380 square feet of living space and a 0.15-acre lot.

When was 577 Seymour St, Napa, CA built?

577 Seymour St, Napa, CA was built in 1940, making it 86 years old. The building has 1 story.

What schools serve 577 Seymour St, Napa, CA?

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

How does 577 Seymour St, Napa, CA compare to other homes in Napa 94559?

Among the 7,778 homes in Napa 94559, it is worth more than 87% of them ($1,354,665 against a typical $800,432), its price per square foot is higher than 96% of them ($982 against a typical $597), it is bigger than 48% of them (1,380 ft² against a typical 1,408 ft²), its lot is bigger than 55% of them (0.15 ac against a typical 0.15 ac) and it is newer than 26% of them (1940 against a typical 1955). Measured against all of Napa County, it is worth more than 80% 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 577 Seymour St, Napa, CA?

The 2025 property tax bill for 577 Seymour St, Napa, CA was $16,365. The county assessed it at $1,346,400.

More homes on Seymour St

Closest homes

More homes in Napa 94559

Assigned schools

Explore the area

See this home in context

Open 577 Seymour 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