Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$591,770$493 / 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 97How 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

21257 RIVER LN

GEYSERVILLE, CA 95441
2
Beds
1
Baths
1,200 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.
5.02 ac
Lot SizeThe size of the land the home sits on, from county records.
1953
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
2
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$592K
$577K low$607K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,504 (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.$310,624 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$206,831
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$103,793
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$304,534

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.35
93
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
59
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
27
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.118 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.51%
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.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Custom Design
CountySONOMA
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
HeatingThe type of heating system in the home.None
CoolingThe type of cooling or air conditioning in the home.None
FireplaceWhether the home has a fireplace, and what kind.Yes
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.

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Geyserville Elementary SchoolD
Elementary · Grades KG–5 · 0.6 mi
M
Geyserville New Tech AcademyC-
Middle · Grades 6–12 · 0.8 mi

District: Geyserville Unified School District

Neighborhood · ZIP 95441These 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.132
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.84
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.629

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.82%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.30%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.1,650
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.23 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$126,133
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$211,187
Average tempThe average temperature here across a full year.58°F
Annual precipHow much rain and melted snow falls here in a typical year.46 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.78%

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

21257 River Ln 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 79% of homes in Sonoma County
  • Smaller than 76% of homes in Sonoma County
  • Has a bigger lot than 95% of homes in Sonoma County
  • Older than 82% of homes in Sonoma County

What homes are worth in Geyserville 95441

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

This home
$355K$2.6M

This home is worth more than 27% of homes in Geyserville 95441.

How it measures up in Geyserville 95441

The dot is this home. The mark in the middle is the typical home in Geyserville 95441.

Estimated value$591,770
CheaperTypical $769,127Pricier

Pricier than 27% of homes nearby

Price per ft²$493
CheaperTypical $479Pricier

Pricier than 55% of homes nearby

Living area1,200 ft²
SmallerTypical 1,512 ft²Bigger

Bigger than 28% of homes nearby

Lot size5.02 ac
SmallerTypical 0.45 acBigger

Bigger than 88% of homes nearby

Year built1953
OlderTypical 1972Newer

Newer than 33% of homes nearby

How 21257 River Ln ranks against every home in each area.
MeasureThis homeGeyserville 95441Sonoma County
Estimated valuepricier than$591,77027% of homes21% of homes
Price per ft²pricier than$49355% of homes53% of homes
Living areabigger than1,200 ft²28% of homes24% of homes
Lot sizebigger than5.02 ac88% of homes95% of homes
Year builtnewer than195333% of homes18% of homes

About 21257 River Ln

How much is 21257 River Ln, Geyserville, CA worth?

The TopHap Estimate for 21257 River Ln, Geyserville, CA is $591,770 as of Jul 14, 2026. The likely range is $576,663 to $606,877. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21257 River Ln, Geyserville, CA last sell?

21257 River Ln, Geyserville, CA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 21257 River Ln, Geyserville, CA?

21257 River Ln, Geyserville, CA has 2 bedrooms, 1 bathrooms and 1,200 square feet of living space.

When was 21257 River Ln, Geyserville, CA built?

21257 River Ln, Geyserville, CA was built in 1953, making it 73 years old. It is a custom design home. The building has 1 story.

What schools serve 21257 River Ln, Geyserville, CA?

21257 River Ln, Geyserville, CA is assigned to Geyserville Elementary School (elementary), rated D; Geyserville New Tech Academy (middle), rated C-. All sit in Geyserville Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21257 River Ln, Geyserville, CA compare to other homes in Geyserville 95441?

Among the 465 homes in Geyserville 95441, it is worth more than 27% of them ($591,770 against a typical $769,127), its price per square foot is higher than 55% of them ($493 against a typical $479), it is bigger than 28% of them (1,200 ft² against a typical 1,512 ft²), its lot is bigger than 88% of them (5.02 ac against a typical 0.45 ac) and it is newer than 33% of them (1953 against a typical 1972). Measured against all of Sonoma County, it is worth more than 21% 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 21257 River Ln, Geyserville, CA?

The 2025 property tax bill for 21257 River Ln, Geyserville, CA was $3,504. The county assessed it at $310,624.

More homes on River Ln

Closest homes

More homes in Geyserville 95441

Assigned schools

Explore the area

See this home in context

Open 21257 River Ln 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