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Single Family ResidenceResidential
$446,762
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 77How 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 $125,000 on Oct 29, 1998

521 GUIDO AVE

FORTUNA, CA 95540
0
Baths
0.15 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$447K
$343K low$551K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$125,000 · Oct 29, 1998

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,100 (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.$195,315 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$58,772
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$136,543
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$195,315

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.150 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.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
CountyHumboldt
Lot (acres)The size of the land the home sits on, from county records.0.15
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(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
Norman G. Ambrosini Elementary SchoolC-
Elementary · Grades KG–4 · 0.5 mi
H
Fortuna Union High SchoolB+
High · Grades 9–12 · 1.1 mi
M
Toddy Thomas Middle SchoolD+
Middle · Grades 5–8 · 1.3 mi

District: Fortuna Union High School District

Neighborhood · ZIP 95540These 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.76
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 100.753

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.15%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.13%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.6%
PopulationHow many people live in this area.13,122
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.343 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$60,927
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$81,739
Average tempThe average temperature here across a full year.54°F
Annual precipHow much rain and melted snow falls here in a typical year.53 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

521 Guido Ave 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 66% of homes in Fortuna 95540
  • Has a smaller lot than 83% of homes in Fortuna 95540

What homes are worth in Fortuna 95540

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

This home
$195K$829K

This home is worth more than 66% of homes in Fortuna 95540.

How it measures up in Fortuna 95540

The dot is this home. The mark in the middle is the typical home in Fortuna 95540.

Estimated value$446,762
CheaperTypical $391,977Pricier

Pricier than 66% of homes nearby

Lot size0.15 ac
SmallerTypical 0.21 acBigger

Bigger than 17% of homes nearby

How 521 Guido Ave ranks against every home in each area.
MeasureThis homeFortuna 95540Humboldt County
Estimated valuepricier than$446,76266% of homes62% of homes
Lot sizebigger than0.15 ac17% of homes21% of homes

About 521 Guido Ave

How much is 521 Guido Ave, Fortuna, CA worth?

The TopHap Estimate for 521 Guido Ave, Fortuna, CA is $446,762 as of Sep 24, 2026. The likely range is $342,601 to $550,923. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 521 Guido Ave, Fortuna, CA last sell?

521 Guido Ave, Fortuna, CA last sold on Oct 29, 1998 for $125,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

What schools serve 521 Guido Ave, Fortuna, CA?

521 Guido Ave, Fortuna, CA is assigned to Norman G. Ambrosini Elementary School (elementary), rated C-; Fortuna Union High School (high), rated B+; Toddy Thomas Middle School (middle), rated D+. All sit in Fortuna Union High School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 521 Guido Ave, Fortuna, CA compare to other homes in Fortuna 95540?

Among the 4,600 homes in Fortuna 95540, it is worth more than 66% of them ($446,762 against a typical $391,977) and its lot is bigger than 17% of them (0.15 ac against a typical 0.21 ac). Measured against all of Humboldt County, it is worth more than 62% 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 521 Guido Ave, Fortuna, CA?

The 2025 property tax bill for 521 Guido Ave, Fortuna, CA was $2,100. The county assessed it at $195,315.

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Assigned schools

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