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Single Family ResidenceResidential
$566,975$241 / 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 94How 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 $535,000 on Jan 15, 2021

850 FIRLANE PL

CASTLE ROCK, WA 98611
4
Beds
2
Baths
2,348 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.
6.27 ac
Lot SizeThe size of the land the home sits on, from county records.
1960
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
8
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$567K
$533K low$600K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$535,000 · Jan 15, 2021
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.$65,975
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$52,780
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.$428,000
WILLAMETTE VALLEY BANK · recorded Jan 15, 2021
2nd 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.$73,000
COLUMBIA CU

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,789 (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.$505,340 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$77,270
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$428,070
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$484,360
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$505,340

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyCowlitz
Lot (acres)The size of the land the home sits on, from county records.6.27
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Forced Air
GarageWhether the property has a garage, and details like whether it is attached to the home.Mixed
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Porch · 624 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.

E
Lexington Elementary SchoolB
Elementary · Grades KG–5 · 3.6 mi
M
Huntington Middle SchoolC-
Middle · Grades 6–8 · 6.2 mi
H
Kelso High SchoolC-
High · Grades 9–12 · 6.7 mi

District: Kelso 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

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
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

850 Firlane Pl 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 83% of homes in Cowlitz County
  • Costs less per square foot than 66% of homes in Castle Rock 98611
  • Bigger than 88% of homes in Cowlitz County
  • Has a bigger lot than 90% of homes in Cowlitz County
  • Older than 77% 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
$202K$878K

This home is worth more than 76% 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$566,975
CheaperTypical $433,318Pricier

Pricier than 76% of homes nearby

Price per ft²$241
CheaperTypical $268Pricier

Pricier than 34% of homes nearby

Living area2,348 ft²
SmallerTypical 1,562 ft²Bigger

Bigger than 87% of homes nearby

Lot size6.27 ac
SmallerTypical 2.8 acBigger

Bigger than 82% of homes nearby

Year built1960
OlderTypical 1980Newer

Newer than 23% of homes nearby

How 850 Firlane Pl ranks against every home in each area.
MeasureThis homeCastle Rock 98611Cowlitz County
Estimated valuepricier than$566,97576% of homes83% of homes
Price per ft²pricier than$24134% of homes41% of homes
Living areabigger than2,348 ft²87% of homes88% of homes
Lot sizebigger than6.27 ac82% of homes90% of homes
Year builtnewer than196023% of homes33% of homes

About 850 Firlane Pl

How much is 850 Firlane Pl, Castle Rock, WA worth?

The TopHap Estimate for 850 Firlane Pl, Castle Rock, WA is $566,975 as of Jul 14, 2026. The likely range is $533,455 to $600,495. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 850 Firlane Pl, Castle Rock, WA last sell?

850 Firlane Pl, Castle Rock, WA last sold on Jan 15, 2021 for $535,000, according to the county's recorded deed.

How big is 850 Firlane Pl, Castle Rock, WA?

850 Firlane Pl, Castle Rock, WA has 4 bedrooms, 2 bathrooms, 2,348 square feet of living space and a 6.27-acre lot.

When was 850 Firlane Pl, Castle Rock, WA built?

850 Firlane Pl, Castle Rock, WA was built in 1960, making it 66 years old. The building has 2 stories.

What schools serve 850 Firlane Pl, Castle Rock, WA?

850 Firlane Pl, Castle Rock, WA is assigned to Lexington Elementary School (elementary), rated B; Huntington Middle School (middle), rated C-; Kelso High School (high), rated C-. All sit in Kelso School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 850 Firlane Pl, Castle Rock, WA compare to other homes in Castle Rock 98611?

Among the 4,448 homes in Castle Rock 98611, it is worth more than 76% of them ($566,975 against a typical $433,318), its price per square foot is higher than 34% of them ($241 against a typical $268), it is bigger than 87% of them (2,348 ft² against a typical 1,562 ft²), its lot is bigger than 82% of them (6.27 ac against a typical 2.8 ac) and it is newer than 23% of them (1960 against a typical 1980). Measured against all of Cowlitz County, it is worth more than 83% 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 850 Firlane Pl, Castle Rock, WA?

The 2025 property tax bill for 850 Firlane Pl, Castle Rock, WA was $4,789. The county assessed it at $505,340.

Closest homes

More homes in Castle Rock 98611

Assigned schools

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