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Single Family ResidenceResidential
$657,914$515 / 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 Sep 24, 2026
Last sold for $540,000 on Feb 21, 2018

830 UNION ST

ARCATA, CA 95521
3
Beds
2
Baths
1,278 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.
0.13 ac
Lot SizeThe size of the land the home sits on, from county records.
1990
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
6
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$658K
$597K low$718K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$540,000 · Feb 21, 2018

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,829 (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.$614,424 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$159,294
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$455,130
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$614,424

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.0.13
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
HeatingThe type of heating system in the home.Central
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.No

Transaction History(7)

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(4)

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 · 0.8 mi
H
Arcata High SchoolB+
High · Grades 9–12 · 0.9 mi
E
Arcata Elementary SchoolC+
Elementary · Grades KG–5 · 1.2 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

830 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 89% of homes in Humboldt County
  • Costs more per square foot than 97% of homes in Humboldt County
  • Smaller than 71% of homes in East Arcata / Bay View
  • Has a smaller lot than 91% of homes in East Arcata / Bay View
  • Newer than 95% of homes in East Arcata / Bay View

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
$244K$952K

This home is worth more than 83% 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$657,914
CheaperTypical $467,182Pricier

Pricier than 83% of homes nearby

Price per ft²$515
CheaperTypical $361Pricier

Pricier than 95% of homes nearby

Living area1,278 ft²
SmallerTypical 1,404 ft²Bigger

Bigger than 40% of homes nearby

Lot size0.13 ac
SmallerTypical 0.19 acBigger

Bigger than 13% of homes nearby

Year built1990
OlderTypical 1958Newer

Newer than 86% of homes nearby

How 830 Union St ranks against every home in each area.
MeasureThis homeEast Arcata / Bay ViewArcata 95521Humboldt County
Estimated valuepricier than$657,91472% of homes83% of homes89% of homes
Price per ft²pricier than$51585% of homes95% of homes97% of homes
Living areabigger than1,278 ft²29% of homes40% of homes35% of homes
Lot sizebigger than0.13 ac9% of homes13% of homes12% of homes
Year builtnewer than199095% of homes86% of homes76% of homes

About 830 Union St

How much is 830 Union St, Arcata, CA worth?

The TopHap Estimate for 830 Union St, Arcata, CA is $657,914 as of Sep 24, 2026. The likely range is $597,430 to $718,398. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 830 Union St, Arcata, CA last sell?

830 Union St, Arcata, CA last sold on Feb 21, 2018 for $540,000, according to the county's recorded deed. TopHap holds 4 recorded sales for this parcel.

How big is 830 Union St, Arcata, CA?

830 Union St, Arcata, CA has 3 bedrooms, 2 bathrooms, 1,278 square feet of living space and a 0.13-acre lot.

When was 830 Union St, Arcata, CA built?

830 Union St, Arcata, CA was built in 1990, making it 36 years old. The building has 1 story.

What schools serve 830 Union St, Arcata, CA?

830 Union St, Arcata, CA is assigned to Sunny Brae Middle School (middle), rated B-; Arcata High School (high), rated B+; 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 830 Union St, Arcata, CA compare to other homes in Arcata 95521?

Among the 5,323 homes in Arcata 95521, it is worth more than 83% of them ($657,914 against a typical $467,182), its price per square foot is higher than 95% of them ($515 against a typical $361), it is bigger than 40% of them (1,278 ft² against a typical 1,404 ft²), its lot is bigger than 13% of them (0.13 ac against a typical 0.19 ac) and it is newer than 86% of them (1990 against a typical 1958). Measured against all of Humboldt County, it is worth more than 89% 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 830 Union St, Arcata, CA?

The 2025 property tax bill for 830 Union St, Arcata, CA was $6,829. The county assessed it at $614,424.

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