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Single Family ResidenceResidential
$220,921$251 / 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 93How 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

815 GUERNSEY ST

PROSSER, WA 99350
2
Beds
1
Baths
879 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.
0.13 ac
Lot SizeThe size of the land the home sits on, from county records.
1900
Year BuiltThe year the home was originally built, according to county records.
1
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.

Valuation

$221K
$206K low$236K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,101 (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.$202,160 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$80,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$122,160
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$196,340
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$202,160

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.
81
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.0.13
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
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.Baseboard
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 567 ft²Patio · 56 ft²Porch · 104 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 SchoolB-
High · Grades 9–12 · 0.2 mi
E
Keene-Riverview Elementary
Elementary · Grades PK–2 · 0.3 mi
M
Housel Middle SchoolC+
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

815 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 less than 97% of homes in Benton County
  • Smaller than 95% of homes in Benton County
  • Has a smaller lot than 95% of homes in Prosser 99350
  • 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
$202K$811K

This home is worth more than 5% 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$220,921
CheaperTypical $373,812Pricier

Pricier than 5% of homes nearby

Price per ft²$251
CheaperTypical $247Pricier

Pricier than 54% of homes nearby

Living area879 ft²
SmallerTypical 1,572 ft²Bigger

Bigger than 6% of homes nearby

Lot size0.13 ac
SmallerTypical 1 acBigger

Bigger than 5% of homes nearby

Year built1900
OlderTypical 1986Newer

Older than almost all homes nearby

How 815 Guernsey St ranks against every home in each area.
MeasureThis homeProsser 99350Benton County
Estimated valuepricier than$220,9215% of homes3% of homes
Price per ft²pricier than$25154% of homes52% of homes
Living areabigger than879 ft²6% of homes5% of homes
Lot sizebigger than0.13 ac5% of homes8% of homes
Year builtnewer than1900almost no homesalmost no homes

About 815 Guernsey St

How much is 815 Guernsey St, Prosser, WA worth?

The TopHap Estimate for 815 Guernsey St, Prosser, WA is $220,921 as of Aug 30, 2026. The likely range is $206,019 to $235,823. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

How big is 815 Guernsey St, Prosser, WA?

815 Guernsey St, Prosser, WA has 2 bedrooms, 1 bathrooms, 879 square feet of living space and a 0.13-acre lot.

When was 815 Guernsey St, Prosser, WA built?

815 Guernsey St, Prosser, WA was built in 1900, making it 126 years old. It is a conventional home. The building has 1 story.

What schools serve 815 Guernsey St, Prosser, WA?

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

How does 815 Guernsey St, Prosser, WA compare to other homes in Prosser 99350?

Among the 4,274 homes in Prosser 99350, it is worth more than 5% of them ($220,921 against a typical $373,812), its price per square foot is higher than 54% of them ($251 against a typical $247), it is bigger than 6% of them (879 ft² against a typical 1,572 ft²), its lot is bigger than 5% of them (0.13 ac against a typical 1 ac) and it is newer than almost none of them (1900 against a typical 1986). Measured against all of Benton County, it is worth more than 3% 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 815 Guernsey St, Prosser, WA?

The 2025 property tax bill for 815 Guernsey St, Prosser, WA was $2,101. The county assessed it at $202,160.

More homes on Guernsey St

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