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Single Family ResidentialResidential
$499,509$150 / 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 93How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026

15677 ROAD 23 SW

MATTAWA, WA 99349
0
Baths
3,322 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.
1 ac
Lot SizeThe size of the land the home sits on, from county records.
1998
Year BuiltThe year the home was originally built, according to county records.

Valuation

$500K
$462K low$537K 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.$90,490 (2024)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$40,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$50,490
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$90,490
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$90,490

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.40
45
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
81
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
43
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
7
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
24
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.8 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.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 Residential
CountyGrant
Lot (acres)The size of the land the home sits on, from county records.1.00
HeatingThe type of heating system in the home.None
PoolWhether the property has a pool, and what kind, such as in-ground.No

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

H
Wahluke High SchoolD+
High · Grades 9–12 · 3.4 mi
M
Wahluke Junior High SchoolC-
Middle · Grades 6–8 · 3.5 mi
E
Saddle Mountain Elementary SchoolF
Elementary · Grades 1–3 · 3.6 mi

District: Wahluke School District

Neighborhood · ZIP 99349These 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.86
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.109
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.90

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.85%
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.17%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.2.1%
PopulationHow many people live in this area.8,354
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.25 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$63,897
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$85,776
Average tempThe average temperature here across a full year.52°F
Annual precipHow much rain and melted snow falls here in a typical year.8 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.54%

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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

15677 Road 23 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.

  • Worth more than 78% of homes in Grant County
  • Costs less per square foot than 92% of homes in Mattawa 99349
  • Bigger than 97% of homes in Mattawa 99349
  • Has a bigger lot than 81% of homes in Mattawa 99349
  • Newer than 68% of homes in Grant County

What homes are worth in Mattawa 99349

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

This home
$173K$1.1M

This home is worth more than 51% of homes in Mattawa 99349.

How it measures up in Mattawa 99349

The dot is this home. The mark in the middle is the typical home in Mattawa 99349.

Estimated value$499,509
CheaperTypical $497,970Pricier

Pricier than 51% of homes nearby

Price per ft²$150
CheaperTypical $332Pricier

Pricier than 8% of homes nearby

Living area3,322 ft²
SmallerTypical 1,440 ft²Bigger

Bigger than 97% of homes nearby

Lot size1 ac
SmallerTypical 0.26 acBigger

Bigger than 81% of homes nearby

Year built1998
OlderTypical 1998Newer

Newer than 53% of homes nearby

How 15677 Road 23 Sw ranks against every home in each area.
MeasureThis homeMattawa 99349Grant County
Estimated valuepricier than$499,50951% of homes78% of homes
Price per ft²pricier than$1508% of homes8% of homes
Living areabigger than3,322 ft²97% of homes97% of homes
Lot sizebigger than1 ac81% of homes74% of homes
Year builtnewer than199853% of homes68% of homes

About 15677 Road 23 Sw

How much is 15677 Road 23 Sw, Mattawa, WA worth?

The TopHap Estimate for 15677 Road 23 Sw, Mattawa, WA is $499,509 as of Sep 24, 2026. The likely range is $462,048 to $536,970. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 15677 Road 23 Sw, Mattawa, WA last sell?

15677 Road 23 Sw, Mattawa, WA last sold on Aug 20, 2015, according to the county's recorded deed.

How big is 15677 Road 23 Sw, Mattawa, WA?

15677 Road 23 Sw, Mattawa, WA has 3,322 square feet of living space and a 1.00-acre lot.

When was 15677 Road 23 Sw, Mattawa, WA built?

15677 Road 23 Sw, Mattawa, WA was built in 1998, making it 28 years old.

What schools serve 15677 Road 23 Sw, Mattawa, WA?

15677 Road 23 Sw, Mattawa, WA is assigned to Wahluke High School (high), rated D+; Wahluke Junior High School (middle), rated C-; Saddle Mountain Elementary School (elementary), rated F. All sit in Wahluke School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 15677 Road 23 Sw, Mattawa, WA compare to other homes in Mattawa 99349?

Among the 1,970 homes in Mattawa 99349, it is worth more than 51% of them ($499,509 against a typical $497,970), its price per square foot is higher than 8% of them ($150 against a typical $332), it is bigger than 97% of them (3,322 ft² against a typical 1,440 ft²), its lot is bigger than 81% of them (1 ac against a typical 0.26 ac) and it is newer than 53% of them (1998 against a typical 1998). Measured against all of Grant County, it is worth more than 78% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

More homes on Road 23 Sw

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