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Single Family ResidenceResidential
$528,394
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 93How 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

320 UNION ST

ARCATA, CA 95521
0
Baths
0.58 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$528K
$490K low$567K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,228 (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.$453,713 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$49,006
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$404,707
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$453,713

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyHumboldt
Lot (acres)The size of the land the home sits on, from county records.0.57
HeatingThe type of heating system in the home.None
PoolWhether the property has a pool, and what kind, such as in-ground.No

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.

M
Sunny Brae Middle SchoolB
Middle · Grades 6–8 · 0.5 mi
H
Arcata High SchoolA+
High · Grades 9–12 · 1.2 mi
E
Arcata Elementary SchoolC
Elementary · Grades KG–5 · 1.5 mi

District: Northern Humboldt Union High School District

Neighborhood · ZIP 95521These 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.113
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.100
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.641

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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.25%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.26%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.7%
PopulationHow many people live in this area.20,920
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.271 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$48,337
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$66,702
Average tempThe average temperature here across a full year.51°F
Annual precipHow much rain and melted snow falls here in a typical year.76 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.51%

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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

320 Union 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 78% of homes in Humboldt County
  • Has a bigger lot than 85% of homes in Sunny Brae

What homes are worth in Arcata 95521

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

This home
$235K$942K

This home is worth more than 68% of homes in Arcata 95521.

How it measures up in Arcata 95521

The dot is this home. The mark in the middle is the typical home in Arcata 95521.

Estimated value$528,394
CheaperTypical $462,799Pricier

Pricier than 68% of homes nearby

Lot size0.58 ac
SmallerTypical 0.19 acBigger

Bigger than 78% of homes nearby

How 320 Union St ranks against every home in each area.
MeasureThis homeSunny BraeArcata 95521Humboldt County
Estimated valuepricier than$528,39464% of homes68% of homes78% of homes
Lot sizebigger than0.58 ac85% of homes78% of homes69% of homes

About 320 Union St

How much is 320 Union St, Arcata, CA worth?

The TopHap Estimate for 320 Union St, Arcata, CA is $528,394 as of Jul 14, 2026. The likely range is $490,128 to $566,660. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 320 Union St, Arcata, CA last sell?

320 Union St, Arcata, CA last sold on Apr 1, 2013, according to the county's recorded deed.

What schools serve 320 Union St, Arcata, CA?

320 Union St, Arcata, CA is assigned to Sunny Brae Middle School (middle), rated B; Arcata High School (high), rated A+; Arcata Elementary School (elementary), rated C. All sit in Northern Humboldt Union High School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 320 Union St, Arcata, CA compare to other homes in Arcata 95521?

Among the 5,321 homes in Arcata 95521, it is worth more than 68% of them ($528,394 against a typical $462,799) and its lot is bigger than 78% of them (0.58 ac against a typical 0.19 ac). Measured against all of Humboldt County, it is worth more than 78% 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 320 Union St, Arcata, CA?

The 2025 property tax bill for 320 Union St, Arcata, CA was $6,228. The county assessed it at $453,713.

More homes on Union St

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Assigned schools

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