Skip to content
Skip to content
TopHapOpen in map
Rural ResidenceResidential
$345,423$350 / 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 76How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026
Last sold for $470,000 on Sep 13, 2018

803 MAD RIVER RD

ARCATA, CA 95521
2
Beds
1
Baths
988 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.
2 ac
Lot SizeThe size of the land the home sits on, from county records.
1917
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
4
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$345K
$263K low$428K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$470,000 · Sep 13, 2018

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,205 (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.$281,106 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$176,249
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$104,857
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$281,106

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.83 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.34%
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.Rural Residence
CountyHumboldt
Lot (acres)The size of the land the home sits on, from county records.2.00
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
HeatingThe type of heating system in the home.Wood Furnace
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.

E
Pacific Union Elementary SchoolB+
Elementary · Grades KG–8 · 2.4 mi
H
Arcata High SchoolA+
High · Grades 9–12 · 3.6 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%

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

803 Mad River Rd 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 less than 88% of homes in Arcata 95521
  • Costs more per square foot than 77% of homes in Humboldt County
  • Smaller than 87% of homes in Arcata 95521
  • Has a bigger lot than 91% of homes in Arcata 95521
  • Older than 94% of homes in Arcata 95521

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
$240K$975K

This home is worth more than 12% 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$345,423
CheaperTypical $470,315Pricier

Pricier than 12% of homes nearby

Price per ft²$350
CheaperTypical $352Pricier

Pricier than 48% of homes nearby

Living area988 ft²
SmallerTypical 1,408 ft²Bigger

Bigger than 13% of homes nearby

Lot size2 ac
SmallerTypical 0.19 acBigger

Bigger than 91% of homes nearby

Year built1917
OlderTypical 1959Newer

Newer than 6% of homes nearby

How 803 Mad River Rd ranks against every home in each area.
MeasureThis homeArcata 95521Humboldt County
Estimated valuepricier than$345,42312% of homes35% of homes
Price per ft²pricier than$35048% of homes77% of homes
Living areabigger than988 ft²13% of homes14% of homes
Lot sizebigger than2 ac91% of homes82% of homes
Year builtnewer than19176% of homes10% of homes

About 803 Mad River Rd

How much is 803 Mad River Rd, Arcata, CA worth?

The TopHap Estimate for 803 Mad River Rd, Arcata, CA is $345,423 as of Aug 30, 2026. The likely range is $262,888 to $427,958. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 803 Mad River Rd, Arcata, CA last sell?

803 Mad River Rd, Arcata, CA last sold on Sep 13, 2018 for $470,000, according to the county's recorded deed.

How big is 803 Mad River Rd, Arcata, CA?

803 Mad River Rd, Arcata, CA has 2 bedrooms, 1 bathrooms, 988 square feet of living space and a 2.00-acre lot.

When was 803 Mad River Rd, Arcata, CA built?

803 Mad River Rd, Arcata, CA was built in 1917, making it 109 years old. The building has 1 story.

What schools serve 803 Mad River Rd, Arcata, CA?

803 Mad River Rd, Arcata, CA is assigned to Pacific Union Elementary School (elementary), rated B+; Arcata High School (high), rated A+. All sit in Northern Humboldt Union High School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 803 Mad River Rd, Arcata, CA compare to other homes in Arcata 95521?

Among the 5,321 homes in Arcata 95521, it is worth more than 12% of them ($345,423 against a typical $470,315), its price per square foot is higher than 48% of them ($350 against a typical $352), it is bigger than 13% of them (988 ft² against a typical 1,408 ft²), its lot is bigger than 91% of them (2 ac against a typical 0.19 ac) and it is newer than 6% of them (1917 against a typical 1959). Measured against all of Humboldt County, it is worth more than 35% 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 803 Mad River Rd, Arcata, CA?

The 2025 property tax bill for 803 Mad River Rd, Arcata, CA was $3,205. The county assessed it at $281,106.

More homes on Mad River Rd

Closest homes

More homes in Arcata 95521

Assigned schools

Explore the area

See this home in context

Open 803 Mad River Rd 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