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Single Family ResidenceResidential
$109,496$207 / 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 Sep 24, 2026

421 MASON AVE

WINCHESTER, ID 83555
1
Beds
1
Baths
528 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.
0.16 ac
Lot SizeThe size of the land the home sits on, from county records.
1930
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
3
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$109K
$104K low$115K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$949 (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.$63,005 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$23,091
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$39,914
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$45,091
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$63,005

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.35
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
71
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
42
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
45
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
17
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

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
CountyLEWIS
Lot (acres)The size of the land the home sits on, from county records.0.16
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.Wood (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Aluminum
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
CoolingThe type of cooling or air conditioning in the home.None
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Shed · 160 ft²

Transaction History(3)

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
Highland SchoolD-
Elementary · Grades PK–12 · 7.1 mi

District: Highland Joint School District 305

Neighborhood · ZIP 83555These 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.137
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.117
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.61

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.78%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.13%
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.1.3%
PopulationHow many people live in this area.436
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.4 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$65,201
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$76,000
Average tempThe average temperature here across a full year.45°F
Annual precipHow much rain and melted snow falls here in a typical year.24 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.64%

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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

421 Mason Ave 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 Winchester 83555
  • Costs more per square foot than 72% of homes in Lewis County
  • Smaller than 97% of homes in Lewis County
  • Has a smaller lot than 97% of homes in Winchester 83555
  • Older than 79% of homes in Winchester 83555

What homes are worth in Winchester 83555

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

This home
$119K$694K

This home is worth less than almost all homes in Winchester 83555.

How it measures up in Winchester 83555

The dot is this home. The mark in the middle is the typical home in Winchester 83555.

Estimated value$109,496
CheaperTypical $290,585Pricier

Cheaper than almost all homes nearby

Price per ft²$207
CheaperTypical $207Pricier

Pricier than 50% of homes nearby

Living area528 ft²
SmallerTypical 1,280 ft²Bigger

Bigger than 6% of homes nearby

Lot size0.16 ac
SmallerTypical 0.56 acBigger

Bigger than 3% of homes nearby

Year built1930
OlderTypical 1979Newer

Newer than 21% of homes nearby

How 421 Mason Ave ranks against every home in each area.
MeasureThis homeWinchester 83555Lewis County
Estimated valuepricier than$109,496almost no homesalmost no homes
Price per ft²pricier than$20750% of homes72% of homes
Living areabigger than528 ft²6% of homes3% of homes
Lot sizebigger than0.16 ac3% of homes13% of homes
Year builtnewer than193021% of homes26% of homes

About 421 Mason Ave

How much is 421 Mason Ave, Winchester, ID worth?

The TopHap Estimate for 421 Mason Ave, Winchester, ID is $109,496 as of Sep 24, 2026. The likely range is $104,490 to $114,502. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 421 Mason Ave, Winchester, ID last sell?

421 Mason Ave, Winchester, ID last sold on Feb 20, 2026, according to the county's recorded deed.

How big is 421 Mason Ave, Winchester, ID?

421 Mason Ave, Winchester, ID has 1 bedrooms, 1 bathrooms, 528 square feet of living space and a 0.16-acre lot.

When was 421 Mason Ave, Winchester, ID built?

421 Mason Ave, Winchester, ID was built in 1930, making it 96 years old. The building has 1 story.

What schools serve 421 Mason Ave, Winchester, ID?

421 Mason Ave, Winchester, ID is assigned to Highland School (elementary), rated D-. All sit in Highland Joint School District 305. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 421 Mason Ave, Winchester, ID compare to other homes in Winchester 83555?

Among the 317 homes in Winchester 83555, it is worth more than almost none of them ($109,496 against a typical $290,585), its price per square foot is higher than 50% of them ($207 against a typical $207), it is bigger than 6% of them (528 ft² against a typical 1,280 ft²), its lot is bigger than 3% of them (0.16 ac against a typical 0.56 ac) and it is newer than 21% of them (1930 against a typical 1979). Measured against all of Lewis 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 421 Mason Ave, Winchester, ID?

The 2025 property tax bill for 421 Mason Ave, Winchester, ID was $949. The county assessed it at $63,005.

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