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Single Family ResidenceResidential
$639,900$322 / 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 98How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026

421 W MILLSTONE ST

MIDDLETON, ID 83644
3
Beds
2
Baths
1,990 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.
0.19 ac
Lot SizeThe size of the land the home sits on, from county records.
2026
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$640K
$628K low$652K 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.$135,700 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$135,700
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$135,700

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.45
10
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
70
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
62
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
19
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
65
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.6 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.6%
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
CountyCANYON
Lot (acres)The size of the land the home sits on, from county records.0.19
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.Composition Shingle
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Central
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

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

E
Mill Creek Elementary SchoolA
Elementary · Grades KG–5 · 0.3 mi
M
Middleton Middle SchoolB
Middle · Grades 6–8 · 0.7 mi
H
Middleton High SchoolC-
High · Grades 9–12 · 1.8 mi

District: Middleton School District 134

Neighborhood · ZIP 83644These 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.68
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.114
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.68

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.98%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.19%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.5%
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.16,846
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.360 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$80,387
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$95,638
Average tempThe average temperature here across a full year.51°F
Annual precipHow much rain and melted snow falls here in a typical year.12 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 W Millstone 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 82% of homes in Canyon County
  • Costs more per square foot than 83% of homes in Canyon County
  • Has a smaller lot than 80% of homes in Middleton 83644
  • Among the newest homes in Middleton 83644

What homes are worth in Middleton 83644

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

This home
$295K$1.6M

This home is worth more than 64% of homes in Middleton 83644.

How it measures up in Middleton 83644

The dot is this home. The mark in the middle is the typical home in Middleton 83644.

Estimated value$639,900
CheaperTypical $539,626Pricier

Pricier than 64% of homes nearby

Price per ft²$322
CheaperTypical $280Pricier

Pricier than 69% of homes nearby

Living area1,990 ft²
SmallerTypical 1,998 ft²Bigger

Bigger than 50% of homes nearby

Lot size0.19 ac
SmallerTypical 0.24 acBigger

Bigger than 20% of homes nearby

Year built2026
OlderTypical 2013Newer

Newer than almost all homes nearby

How 421 W Millstone St ranks against every home in each area.
MeasureThis homeMiddleton 83644Canyon County
Estimated valuepricier than$639,90064% of homes82% of homes
Price per ft²pricier than$32269% of homes83% of homes
Living areabigger than1,990 ft²50% of homes64% of homes
Lot sizebigger than0.19 ac20% of homes40% of homes
Year builtnewer than2026almost all homesalmost all homes

About 421 W Millstone St

How much is 421 W Millstone St, Middleton, ID worth?

The TopHap Estimate for 421 W Millstone St, Middleton, ID is $639,900 as of Oct 21, 2026. The likely range is $627,926 to $651,874. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 421 W Millstone St, Middleton, ID last sell?

421 W Millstone St, Middleton, ID last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 421 W Millstone St, Middleton, ID?

421 W Millstone St, Middleton, ID has 3 bedrooms, 2 bathrooms, 1,990 square feet of living space and a 0.19-acre lot.

When was 421 W Millstone St, Middleton, ID built?

421 W Millstone St, Middleton, ID was built in 2026, making it 0 years old. The building has 1 story.

What schools serve 421 W Millstone St, Middleton, ID?

421 W Millstone St, Middleton, ID is assigned to Mill Creek Elementary School (elementary), rated A; Middleton Middle School (middle), rated B; Middleton High School (high), rated C-. All sit in Middleton School District 134. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 421 W Millstone St, Middleton, ID compare to other homes in Middleton 83644?

Among the 7,193 homes in Middleton 83644, it is worth more than 64% of them ($639,900 against a typical $539,626), its price per square foot is higher than 69% of them ($322 against a typical $280), it is bigger than 50% of them (1,990 ft² against a typical 1,998 ft²), its lot is bigger than 20% of them (0.19 ac against a typical 0.24 ac) and it is newer than almost all of them (2026 against a typical 2013). Measured against all of Canyon County, it is worth more than 82% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

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