Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$279,000$163 / 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 95How 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
Last sold for $110,000 on Jun 27, 2007

509 MONROE ST

RYDERWOOD, WA 98581
2
Beds
1
Baths
1,716 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.
0.14 ac
Lot SizeThe size of the land the home sits on, from county records.
1923
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

$279K
$265K low$293K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$110,000 · Jun 27, 2007

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,776 (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.$315,710 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$19,800
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$295,910
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$206,190
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$315,710

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.22 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.51%
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.minimal

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
Lot (acres)The size of the land the home sits on, from county records.0.14
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Heat Pump
CoolingThe type of cooling or air conditioning in the home.Yes
FireplaceWhether the home has a fireplace, and what kind.Yes
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

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
Castle Rock High SchoolD+
High · Grades 9–12 · 8.9 mi
M
Castle Rock Middle SchoolC-
Middle · Grades 6–8 · 9.7 mi
E
Castle Rock Elementary SchoolD+
Elementary · Grades PK–5 · 9.8 mi

District: Castle Rock School District

Neighborhood · ZIP 98581These 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.107
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 100.177

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.94%
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.6.1%
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.768
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.16 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$83,808
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$101,672
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.88 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.35%

Owner Tools

Do you own this home?
Claim this home

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

509 Monroe 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 more than 90% of homes in Ryderwood 98581
  • Costs less per square foot than 93% of homes in Cowlitz County
  • Bigger than 89% of homes in Ryderwood 98581
  • Has a smaller lot than 95% of homes in Ryderwood 98581
  • Older than 96% of homes in Cowlitz County

What homes are worth in Ryderwood 98581

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

This home
$102K$377K

This home is worth more than 90% of homes in Ryderwood 98581.

How it measures up in Ryderwood 98581

The dot is this home. The mark in the middle is the typical home in Ryderwood 98581.

Estimated value$279,000
CheaperTypical $189,976Pricier

Pricier than 90% of homes nearby

Price per ft²$163
CheaperTypical $176Pricier

Pricier than 38% of homes nearby

Living area1,716 ft²
SmallerTypical 1,144 ft²Bigger

Bigger than 89% of homes nearby

Lot size0.14 ac
SmallerTypical 0.27 acBigger

Bigger than 5% of homes nearby

Year built1923
OlderTypical 1923Newer

Newer than 60% of homes nearby

How 509 Monroe St ranks against every home in each area.
MeasureThis homeRyderwood 98581Cowlitz County
Estimated valuepricier than$279,00090% of homes24% of homes
Price per ft²pricier than$16338% of homes7% of homes
Living areabigger than1,716 ft²89% of homes64% of homes
Lot sizebigger than0.14 ac5% of homes7% of homes
Year builtnewer than192360% of homes4% of homes

About 509 Monroe St

How much is 509 Monroe St, Ryderwood, WA worth?

The TopHap Estimate for 509 Monroe St, Ryderwood, WA is $279,000 as of Aug 30, 2026. The likely range is $264,833 to $293,167. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 509 Monroe St, Ryderwood, WA last sell?

509 Monroe St, Ryderwood, WA last sold on Jun 27, 2007 for $110,000, according to the county's recorded deed.

How big is 509 Monroe St, Ryderwood, WA?

509 Monroe St, Ryderwood, WA has 2 bedrooms, 1 bathrooms, 1,716 square feet of living space and a 0.14-acre lot.

When was 509 Monroe St, Ryderwood, WA built?

509 Monroe St, Ryderwood, WA was built in 1923, making it 103 years old. The building has 1 story.

What schools serve 509 Monroe St, Ryderwood, WA?

509 Monroe St, Ryderwood, 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 509 Monroe St, Ryderwood, WA compare to other homes in Ryderwood 98581?

Among the 300 homes in Ryderwood 98581, it is worth more than 90% of them ($279,000 against a typical $189,976), its price per square foot is higher than 38% of them ($163 against a typical $176), it is bigger than 89% of them (1,716 ft² against a typical 1,144 ft²), its lot is bigger than 5% of them (0.14 ac against a typical 0.27 ac) and it is newer than 60% of them (1923 against a typical 1923). Measured against all of Cowlitz County, it is worth more than 24% 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 509 Monroe St, Ryderwood, WA?

The 2025 property tax bill for 509 Monroe St, Ryderwood, WA was $1,776. The county assessed it at $315,710.

More homes on Monroe St

Closest homes

More homes in Ryderwood 98581

Assigned schools

Explore the area

See this home in context

Open 509 Monroe St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map