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Mobile HomeResidential
$527,685$362 / 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 Aug 30, 2026

18004 IRWIN ST SW

ROCHESTER, WA 98579
0
Baths
1,456 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.
1999
Year BuiltThe year the home was originally built, according to county records.

Valuation

$528K
$468K low$587K high

Tax & Assessment

Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$191,400 (2025)
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$191,400
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$176,300
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$191,400

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.23
82
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
26
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
11
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.79 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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.Mobile Home
CountyThurston
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.Block (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Forced Air
FireplaceWhether the home has a fireplace, and what kind.Yes
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 120 ft²Patio · 148 ft²Porch · 132 ft²

Transaction History(1)

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.

H
Rochester High SchoolC
High · Grades 9–12 · 1.8 mi
M
Rochester Middle SchoolB
Middle · Grades 6–8 · 1.9 mi
E
Rochester Primary School
Elementary · Grades PK–2 · 2.1 mi

District: Rochester School District

Neighborhood · ZIP 98579These 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.81
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.110
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.201

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.14%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.3%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.12,480
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.138 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$88,547
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$104,823
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.56 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.35%

Owner Tools

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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

18004 Irwin St Sw 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.

  • Costs more per square foot than 89% of homes in Thurston County
  • Smaller than 68% of homes in Thurston County
  • Newer than 66% of homes in Rochester 98579

What homes are worth in Rochester 98579

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

This home
$200K$919K

This home is worth more than 62% of homes in Rochester 98579.

How it measures up in Rochester 98579

The dot is this home. The mark in the middle is the typical home in Rochester 98579.

Estimated value$527,685
CheaperTypical $487,482Pricier

Pricier than 62% of homes nearby

Price per ft²$362
CheaperTypical $299Pricier

Pricier than 88% of homes nearby

Living area1,456 ft²
SmallerTypical 1,544 ft²Bigger

Bigger than 42% of homes nearby

Year built1999
OlderTypical 1995Newer

Newer than 66% of homes nearby

How 18004 Irwin St Sw ranks against every home in each area.
MeasureThis homeRochester 98579Thurston County
Estimated valuepricier than$527,68562% of homes63% of homes
Price per ft²pricier than$36288% of homes89% of homes
Living areabigger than1,456 ft²42% of homes32% of homes
Year builtnewer than199966% of homes66% of homes

About 18004 Irwin St Sw

How much is 18004 Irwin St Sw, Rochester, WA worth?

The TopHap Estimate for 18004 Irwin St Sw, Rochester, WA is $527,685 as of Aug 30, 2026. The likely range is $467,876 to $587,494. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When was 18004 Irwin St Sw, Rochester, WA built?

18004 Irwin St Sw, Rochester, WA was built in 1999, making it 27 years old.

What schools serve 18004 Irwin St Sw, Rochester, WA?

18004 Irwin St Sw, Rochester, WA is assigned to Rochester High School (high), rated C; Rochester Middle School (middle), rated B; Rochester Primary School (elementary). All sit in Rochester School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 18004 Irwin St Sw, Rochester, WA compare to other homes in Rochester 98579?

Among the 5,059 homes in Rochester 98579, it is worth more than 62% of them ($527,685 against a typical $487,482), its price per square foot is higher than 88% of them ($362 against a typical $299), it is bigger than 42% of them (1,456 ft² against a typical 1,544 ft²) and it is newer than 66% of them (1999 against a typical 1995). Measured against all of Thurston County, it is worth more than 63% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

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