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Single Family ResidenceResidential
$521,649$494 / 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 Jul 14, 2026
Last sold for $525,000 on Oct 28, 2025

3991 E STATE ROUTE 106

UNION, WA 98592
1
Beds
1
Baths
1,056 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.
871 ft²
Lot SizeThe size of the land the home sits on, from county records.
1970
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$522K
$484K low$559K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$525,000 · Oct 28, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,950 (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.$546,550 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$397,280
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$149,270
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$562,445
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$546,550

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.56
98
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
29
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
38
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
99
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
16
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.163 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.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
CountyMASON
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.1997
Lot (acres)The size of the land the home sits on, from county records.0.02
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Metal
HeatingThe type of heating system in the home.Baseboard
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
PoolWhether the property has a pool, and what kind, such as in-ground.No
ViewThe type of view from the property, or another feature of the site that affects value.Water
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 425 ft²Patio · 425 ft²

Transaction History(4)

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
Hood Canal Elementary SchoolC+
Elementary · Grades PK–8 · 2.5 mi
H
Shelton High SchoolD-
High · Grades 9–12 · 7.5 mi

District: Shelton School District

Neighborhood · ZIP 98592These 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.95
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 100.253

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.77%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.21%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.9%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.2,185
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.108 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$86,127
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$118,861
Average tempThe average temperature here across a full year.51°F
Annual precipHow much rain and melted snow falls here in a typical year.73 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.33%

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

3991 E State Route 106 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 67% of homes in Mason County
  • Costs more per square foot than 89% of homes in Mason County
  • Smaller than 84% of homes in Union 98592
  • Among the smallest lots in Mason County
  • Older than 78% of homes in Mason County

What homes are worth in Union 98592

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

This home
$156K$1.4M

This home is worth more than 45% of homes in Union 98592.

How it measures up in Union 98592

The dot is this home. The mark in the middle is the typical home in Union 98592.

Estimated value$521,649
CheaperTypical $558,998Pricier

Pricier than 45% of homes nearby

Price per ft²$494
CheaperTypical $326Pricier

Pricier than 85% of homes nearby

Living area1,056 ft²
SmallerTypical 1,640 ft²Bigger

Bigger than 16% of homes nearby

Lot size871 ft²
SmallerTypical 0.41 acBigger

Smaller than almost all homes nearby

Year built1970
OlderTypical 1993Newer

Newer than 23% of homes nearby

How 3991 E State Route 106 ranks against every home in each area.
MeasureThis homeUnion 98592Mason County
Estimated valuepricier than$521,64945% of homes67% of homes
Price per ft²pricier than$49485% of homes89% of homes
Living areabigger than1,056 ft²16% of homes26% of homes
Lot sizebigger than871 ft²almost no homesalmost no homes
Year builtnewer than197023% of homes22% of homes

About 3991 E State Route 106

How much is 3991 E State Route 106, Union, WA worth?

The TopHap Estimate for 3991 E State Route 106, Union, WA is $521,649 as of Jul 14, 2026. The likely range is $483,955 to $559,343. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3991 E State Route 106, Union, WA last sell?

3991 E State Route 106, Union, WA last sold on Oct 28, 2025 for $525,000, according to the county's recorded deed.

How big is 3991 E State Route 106, Union, WA?

3991 E State Route 106, Union, WA has 1 bedrooms, 1 bathrooms, 1,056 square feet of living space and a 0.02-acre lot.

When was 3991 E State Route 106, Union, WA built?

3991 E State Route 106, Union, WA was built in 1970, making it 56 years old. The building has 1 story.

What schools serve 3991 E State Route 106, Union, WA?

3991 E State Route 106, Union, WA is assigned to Hood Canal Elementary School (elementary), rated C+; Shelton High School (high), rated D-. All sit in Shelton School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3991 E State Route 106, Union, WA compare to other homes in Union 98592?

Among the 1,596 homes in Union 98592, it is worth more than 45% of them ($521,649 against a typical $558,998), its price per square foot is higher than 85% of them ($494 against a typical $326), it is bigger than 16% of them (1,056 ft² against a typical 1,640 ft²), its lot is bigger than almost none of them (871 ft² against a typical 0.41 ac) and it is newer than 23% of them (1970 against a typical 1993). Measured against all of Mason County, it is worth more than 67% 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 3991 E State Route 106, Union, WA?

The 2025 property tax bill for 3991 E State Route 106, Union, WA was $3,950. The county assessed it at $546,550.

More homes on E State Route 106

Closest homes

More homes in Union 98592

Assigned schools

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