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Rural ResidenceResidential
$3,054,811$686 / 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 89How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026
Last sold for $3,180,000 on Oct 8, 2018

34420 HIGHWAY 1

SEA RANCH, CA
4
Beds
3.5
Baths
4,453 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.
4.16 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.
2
StoriesHow many floors the home has above ground.
9
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

$3.1M
$2.7M low$3.4M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$3,180,000 · Oct 8, 2018

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$38,331 (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.$3,618,292 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$1,365,392
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$2,252,900
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$3,547,346

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.21
35
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
73
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
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
CountySONOMA
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.2010
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
HeatingThe type of heating system in the home.Yes
CoolingThe type of cooling or air conditioning in the home.None
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(12)

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
Horicon Elementary SchoolC-
Elementary · Grades KG–8 · 4.2 mi
H
Point Arena High SchoolD+
High · Grades 9–12 · 22.1 mi

District: Point Arena Joint Union High School District

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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

34420 Highway 1 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.

  • Among the most valuable homes in Sonoma County
  • Costs more per square foot than 85% of homes in Sonoma County
  • Among the largest homes in Sonoma County
  • Has a bigger lot than 94% of homes in Sonoma County
  • Newer than 74% of homes in Sonoma County

How it measures up in Sonoma County

The dot is this home. The mark in the middle is the typical home in Sonoma County.

Estimated value$3,054,811
CheaperTypical $768,636Pricier

Pricier than almost all homes nearby

Price per ft²$686
CheaperTypical $485Pricier

Pricier than 85% of homes nearby

Living area4,453 ft²
SmallerTypical 1,562 ft²Bigger

Bigger than almost all homes nearby

Lot size4.16 ac
SmallerTypical 0.16 acBigger

Bigger than 94% of homes nearby

Year built1990
OlderTypical 1978Newer

Newer than 74% of homes nearby

How 34420 Highway 1 ranks against every home in each area.
MeasureThis homeSonoma County
Estimated valuepricier than$3,054,811almost all homes
Price per ft²pricier than$68685% of homes
Living areabigger than4,453 ft²almost all homes
Lot sizebigger than4.16 ac94% of homes
Year builtnewer than199074% of homes

About 34420 Highway 1

How much is 34420 Highway 1, Sea Ranch, CA worth?

The TopHap Estimate for 34420 Highway 1, Sea Ranch, CA is $3,054,811 as of Oct 21, 2026. The likely range is $2,721,757 to $3,387,865. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 34420 Highway 1, Sea Ranch, CA last sell?

34420 Highway 1, Sea Ranch, CA last sold on Oct 8, 2018 for $3,180,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 34420 Highway 1, Sea Ranch, CA?

34420 Highway 1, Sea Ranch, CA has 4 bedrooms, 3.5 bathrooms and 4,453 square feet of living space.

When was 34420 Highway 1, Sea Ranch, CA built?

34420 Highway 1, Sea Ranch, CA was built in 1990, making it 36 years old. The building has 2 stories.

What schools serve 34420 Highway 1, Sea Ranch, CA?

34420 Highway 1, Sea Ranch, CA is assigned to Horicon Elementary School (elementary), rated C-; Point Arena High School (high), rated D+. All sit in Point Arena Joint Union High School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 34420 Highway 1, Sea Ranch, CA compare to other homes in Sonoma County?

Among the 155,515 homes in Sonoma County, it is worth more than almost all of them ($3,054,811 against a typical $768,636), its price per square foot is higher than 85% of them ($686 against a typical $485), it is bigger than almost all of them (4,453 ft² against a typical 1,562 ft²), its lot is bigger than 94% of them (4.16 ac against a typical 0.16 ac) and it is newer than 74% of them (1990 against a typical 1978). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 34420 Highway 1, Sea Ranch, CA?

The 2025 property tax bill for 34420 Highway 1, Sea Ranch, CA was $38,331. The county assessed it at $3,618,292.

More homes on Highway 1

Closest homes

Assigned schools

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