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Single Family ResidenceResidential
$124,363$157 / 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 80How 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 $130,680 on Dec 7, 2018

315 KIRBY AVE SE

CASTLE ROCK, WA 98611
2
Beds
1
Baths
792 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.
1928
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$124K
$99K low$149K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$130,680 · Dec 7, 2018
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$19,363
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$15,490
Loan-to-ValueHow much is still owed on the home compared to what it is worth. 80% means loans equal 80% of our estimate, so it shifts when the estimate does.84%
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$105,000
NEWREZ LLC · recorded May 17, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,275 (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.$274,620 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$34,730
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$239,890
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$268,300
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$274,620

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyCowlitz
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
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

Transaction History(6)

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.

M
Castle Rock Middle SchoolC-
Middle · Grades 6–8 · 0.2 mi
E
Castle Rock Elementary SchoolD+
Elementary · Grades PK–5 · 0.2 mi
H
Castle Rock High SchoolD+
High · Grades 9–12 · 0.8 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%

Ownership

Company ownedWhether the owner is a company or trust rather than a person.Yes

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

315 Kirby Ave Se 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.

  • Among the least valuable homes in Castle Rock 98611
  • Costs less per square foot than 96% of homes in Castle Rock 98611
  • Smaller than 94% of homes in Castle Rock 98611
  • Older than 92% 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
$189K$847K

This home is worth less than almost all 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$124,363
CheaperTypical $430,206Pricier

Cheaper than almost all homes nearby

Price per ft²$157
CheaperTypical $268Pricier

Pricier than 4% of homes nearby

Living area792 ft²
SmallerTypical 1,566 ft²Bigger

Bigger than 6% of homes nearby

Year built1928
OlderTypical 1980Newer

Newer than 8% of homes nearby

How 315 Kirby Ave Se ranks against every home in each area.
MeasureThis homeCastle Rock 98611Cowlitz County
Estimated valuepricier than$124,363almost no homesalmost no homes
Price per ft²pricier than$1574% of homes5% of homes
Living areabigger than792 ft²6% of homes7% of homes
Year builtnewer than19288% of homes11% of homes

About 315 Kirby Ave Se

How much is 315 Kirby Ave Se, Castle Rock, WA worth?

The TopHap Estimate for 315 Kirby Ave Se, Castle Rock, WA is $124,363 as of Jul 14, 2026. The likely range is $99,447 to $149,279. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 315 Kirby Ave Se, Castle Rock, WA last sell?

315 Kirby Ave Se, Castle Rock, WA last sold on Dec 7, 2018 for $130,680, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 315 Kirby Ave Se, Castle Rock, WA?

315 Kirby Ave Se, Castle Rock, WA has 2 bedrooms, 1 bathrooms and 792 square feet of living space.

When was 315 Kirby Ave Se, Castle Rock, WA built?

315 Kirby Ave Se, Castle Rock, WA was built in 1928, making it 98 years old. The building has 1 story.

What schools serve 315 Kirby Ave Se, Castle Rock, WA?

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

How does 315 Kirby Ave Se, 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 almost none of them ($124,363 against a typical $430,206), its price per square foot is higher than 4% of them ($157 against a typical $268), it is bigger than 6% of them (792 ft² against a typical 1,566 ft²) and it is newer than 8% of them (1928 against a typical 1980). Measured against all of Cowlitz County, it is worth more than almost no 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 315 Kirby Ave Se, Castle Rock, WA?

The 2025 property tax bill for 315 Kirby Ave Se, Castle Rock, WA was $2,275. The county assessed it at $274,620.

Closest homes

More homes in Castle Rock 98611

Assigned schools

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