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Single Family ResidenceResidential
$284,018$185 / 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 66How 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
Last sold for $711,765 on Jan 6, 2026

8306 WESTSIDE HWY

CASTLE ROCK, WA 98611
3
Beds
2
Baths
1,536 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.
22.1 ac
Lot SizeThe size of the land the home sits on, from county records.
1963
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
3
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$284K
$187K low$381K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$711,765 · Jan 6, 2026

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,921 (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.$331,360 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$25,390
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$305,970
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$345,980
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$462,800

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.197 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.34%
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
CountyCOWLITZ
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.1989
RoofThe main material covering the roof, such as asphalt shingle or tile.Metal
HeatingThe type of heating system in the home.Electric
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Detached
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Porch · 56 ft²

Transaction History(2)

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
Castle Rock High SchoolD+
High · Grades 9–12 · 6.2 mi
M
Castle Rock Middle SchoolC-
Middle · Grades 6–8 · 7.0 mi
E
Castle Rock Elementary SchoolD+
Elementary · Grades PK–5 · 7.1 mi

District: Castle Rock School District

Neighborhood · ZIP 98611These 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.85
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.104
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.172

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.12%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.0%
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.10,313
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.84 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$81,330
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$96,543
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.61 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.35%

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

8306 Westside Hwy 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 85% of homes in Castle Rock 98611
  • Costs less per square foot than 90% of homes in Castle Rock 98611
  • Among the largest lots in Cowlitz County
  • Older than 75% of homes in Castle Rock 98611

What homes are worth in Castle Rock 98611

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

This home
$205K$842K

This home is worth more than 15% of homes in Castle Rock 98611.

How it measures up in Castle Rock 98611

The dot is this home. The mark in the middle is the typical home in Castle Rock 98611.

Estimated value$284,018
CheaperTypical $426,597Pricier

Pricier than 15% of homes nearby

Price per ft²$185
CheaperTypical $266Pricier

Pricier than 10% of homes nearby

Living area1,536 ft²
SmallerTypical 1,566 ft²Bigger

Bigger than 48% of homes nearby

Lot size22.1 ac
SmallerTypical 2.73 acBigger

Bigger than 98% of homes nearby

Year built1963
OlderTypical 1980Newer

Newer than 25% of homes nearby

How 8306 Westside Hwy ranks against every home in each area.
MeasureThis homeCastle Rock 98611Cowlitz County
Estimated valuepricier than$284,01815% of homes22% of homes
Price per ft²pricier than$18510% of homes11% of homes
Living areabigger than1,536 ft²48% of homes54% of homes
Lot sizebigger than22.1 ac98% of homesalmost all homes
Year builtnewer than196325% of homes35% of homes

About 8306 Westside Hwy

How much is 8306 Westside Hwy, Castle Rock, WA worth?

The TopHap Estimate for 8306 Westside Hwy, Castle Rock, WA is $284,018 as of Jul 14, 2026. The likely range is $187,251 to $380,785. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 8306 Westside Hwy, Castle Rock, WA last sell?

8306 Westside Hwy, Castle Rock, WA last sold on Jan 6, 2026 for $711,765, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 8306 Westside Hwy, Castle Rock, WA?

8306 Westside Hwy, Castle Rock, WA has 3 bedrooms, 2 bathrooms and 1,536 square feet of living space.

When was 8306 Westside Hwy, Castle Rock, WA built?

8306 Westside Hwy, Castle Rock, WA was built in 1963, making it 63 years old. The building has 1 story.

What schools serve 8306 Westside Hwy, Castle Rock, WA?

8306 Westside Hwy, Castle Rock, WA is assigned to Castle Rock High School (high), rated D+; Castle Rock Middle School (middle), rated C-; Castle Rock Elementary School (elementary), rated D+. All sit in Castle Rock School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 8306 Westside Hwy, Castle Rock, WA compare to other homes in Castle Rock 98611?

Among the 4,447 homes in Castle Rock 98611, it is worth more than 15% of them ($284,018 against a typical $426,597), its price per square foot is higher than 10% of them ($185 against a typical $266), it is bigger than 48% of them (1,536 ft² against a typical 1,566 ft²), its lot is bigger than 98% of them (22.1 ac against a typical 2.73 ac) and it is newer than 25% of them (1963 against a typical 1980). Measured against all of Cowlitz County, it is worth more than 22% 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 8306 Westside Hwy, Castle Rock, WA?

The 2025 property tax bill for 8306 Westside Hwy, Castle Rock, WA was $2,921. The county assessed it at $331,360.

More homes on Westside Hwy

Closest homes

More homes in Castle Rock 98611

Assigned schools

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