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Single Family ResidenceResidential
$590,000$177 / 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

831 GUERNSEY ST

PROSSER, WA 99350
4
Beds
3
Baths
3,338 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.
0.37 ac
Lot SizeThe size of the land the home sits on, from county records.
1902
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
5
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

$590K
$536K low$644K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,456 (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.$420,930 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$90,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$330,930
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$420,930
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$420,930

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.32
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
82
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
39
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
7
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
35
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

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.Conventional
CountyBenton
Lot (acres)The size of the land the home sits on, from county records.0.38
ConstructionThe main material the home's frame and walls are built from.Wood Frame
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.Raised (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Heat Pump
CoolingThe type of cooling or air conditioning 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
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 288 ft²Patio · 50 ft²Porch · 50 ft²

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

H
Prosser High SchoolC-
High · Grades 9–12 · 0.2 mi
E
Keene-Riverview Elementary
Elementary · Grades PK–2 · 0.3 mi
M
Housel Middle SchoolD-
Middle · Grades 6–8 · 0.9 mi

District: Prosser School District

Neighborhood · ZIP 99350These 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.87
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.118
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.118

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.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.13%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.10%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.5%
PopulationHow many people live in this area.15,573
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.21 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$72,054
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$89,452
Average tempThe average temperature here across a full year.51°F
Annual precipHow much rain and melted snow falls here in a typical year.10 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

831 Guernsey 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 88% of homes in Prosser 99350
  • Costs less per square foot than 95% of homes in Benton County
  • Bigger than 98% of homes in Prosser 99350
  • Has a bigger lot than 71% of homes in Benton County
  • Among the oldest homes in Benton County

What homes are worth in Prosser 99350

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

This home
$195K$798K

This home is worth more than 88% of homes in Prosser 99350.

How it measures up in Prosser 99350

The dot is this home. The mark in the middle is the typical home in Prosser 99350.

Estimated value$590,000
CheaperTypical $377,649Pricier

Pricier than 88% of homes nearby

Price per ft²$177
CheaperTypical $249Pricier

Pricier than 8% of homes nearby

Living area3,338 ft²
SmallerTypical 1,566 ft²Bigger

Bigger than 98% of homes nearby

Lot size0.37 ac
SmallerTypical 1 acBigger

Bigger than 42% of homes nearby

Year built1902
OlderTypical 1984Newer

Newer than 2% of homes nearby

How 831 Guernsey St ranks against every home in each area.
MeasureThis homeProsser 99350Benton County
Estimated valuepricier than$590,00088% of homes82% of homes
Price per ft²pricier than$1778% of homes5% of homes
Living areabigger than3,338 ft²98% of homes96% of homes
Lot sizebigger than0.37 ac42% of homes71% of homes
Year builtnewer than19022% of homesalmost no homes

About 831 Guernsey St

How much is 831 Guernsey St, Prosser, WA worth?

The TopHap Estimate for 831 Guernsey St, Prosser, WA is $590,000 as of Sep 24, 2026. The likely range is $535,514 to $644,486. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

How big is 831 Guernsey St, Prosser, WA?

831 Guernsey St, Prosser, WA has 4 bedrooms, 3 bathrooms, 3,338 square feet of living space and a 0.38-acre lot.

When was 831 Guernsey St, Prosser, WA built?

831 Guernsey St, Prosser, WA was built in 1902, making it 124 years old. It is a conventional home. The building has 2 stories.

What schools serve 831 Guernsey St, Prosser, WA?

831 Guernsey St, Prosser, WA is assigned to Prosser High School (high), rated C-; Keene-Riverview Elementary (elementary); Housel Middle School (middle), rated D-. All sit in Prosser School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 831 Guernsey St, Prosser, WA compare to other homes in Prosser 99350?

Among the 4,295 homes in Prosser 99350, it is worth more than 88% of them ($590,000 against a typical $377,649), its price per square foot is higher than 8% of them ($177 against a typical $249), it is bigger than 98% of them (3,338 ft² against a typical 1,566 ft²), its lot is bigger than 42% of them (0.37 ac against a typical 1 ac) and it is newer than 2% of them (1902 against a typical 1984). Measured against all of Benton County, it is worth more than 82% 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 831 Guernsey St, Prosser, WA?

The 2025 property tax bill for 831 Guernsey St, Prosser, WA was $4,456. The county assessed it at $420,930.

More homes on Guernsey St

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