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Single Family ResidentialResidential
$914,176$479 / 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 91How 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
Last sold for $163,800 on Jun 22, 2020

2100 HIGHWAY 21

BOISE, ID 83716
3
Beds
2.5
Baths
1,910 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.
4.35 ac
Lot SizeThe size of the land the home sits on, from county records.
1990
Year BuiltThe year the home was originally built, according to county records.
3
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$914K
$828K low$1M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$163,800 · Jun 22, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,627 (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.$796,363 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$331,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$464,863
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$780,190
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$796,363

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.44
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
90
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
57
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
50
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
22
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 Residential
CountyBOISE
Lot (acres)The size of the land the home sits on, from county records.4.35
HeatingThe type of heating system in the home.Yes
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, Attached
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.Deck · 692 ft²Patio · 924 ft²Outdoor kitchen

Transaction History(9)

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
Basin Elementary SchoolB-
Elementary · Grades PK–6 · 15.5 mi
M
Idaho City High SchoolC+
Middle · Grades 7–12 · 15.5 mi

District: Basin School District 72

Neighborhood · ZIP 83716These 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.61
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 100.77

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.92%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.33%
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.1.2%
PopulationHow many people live in this area.23,090
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.28 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$119,791
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$133,031
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.19 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

2100 Highway 21 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 89% of homes in Boise County
  • Costs more per square foot than 86% of homes in Boise 83716
  • Bigger than 92% of homes in Boise County
  • Has a bigger lot than 94% of homes in Boise 83716
  • Older than 88% of homes in Boise 83716

What homes are worth in Boise 83716

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

This home
$227K$1.7M

This home is worth more than 79% of homes in Boise 83716.

How it measures up in Boise 83716

The dot is this home. The mark in the middle is the typical home in Boise 83716.

Estimated value$914,176
CheaperTypical $667,650Pricier

Pricier than 79% of homes nearby

Price per ft²$479
CheaperTypical $357Pricier

Pricier than 86% of homes nearby

Living area1,910 ft²
SmallerTypical 1,936 ft²Bigger

Bigger than 49% of homes nearby

Lot size4.35 ac
SmallerTypical 0.19 acBigger

Bigger than 94% of homes nearby

Year built1990
OlderTypical 2003Newer

Newer than 12% of homes nearby

How 2100 Highway 21 ranks against every home in each area.
MeasureThis homeBoise 83716Boise County
Estimated valuepricier than$914,17679% of homes89% of homes
Price per ft²pricier than$47986% of homes34% of homes
Living areabigger than1,910 ft²49% of homes92% of homes
Lot sizebigger than4.35 ac94% of homes80% of homes
Year builtnewer than199012% of homes44% of homes

About 2100 Highway 21

How much is 2100 Highway 21, Boise, ID worth?

The TopHap Estimate for 2100 Highway 21, Boise, ID is $914,176 as of Sep 24, 2026. The likely range is $827,987 to $1,000,365. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 2100 Highway 21, Boise, ID last sell?

2100 Highway 21, Boise, ID last sold on Jun 22, 2020 for $163,800, according to the county's recorded deed.

How big is 2100 Highway 21, Boise, ID?

2100 Highway 21, Boise, ID has 3 bedrooms, 2.5 bathrooms, 1,910 square feet of living space and a 4.35-acre lot.

When was 2100 Highway 21, Boise, ID built?

2100 Highway 21, Boise, ID was built in 1990, making it 36 years old.

What schools serve 2100 Highway 21, Boise, ID?

2100 Highway 21, Boise, ID is assigned to Basin Elementary School (elementary), rated B-; Idaho City High School (middle), rated C+. All sit in Basin School District 72. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 2100 Highway 21, Boise, ID compare to other homes in Boise 83716?

Among the 9,204 homes in Boise 83716, it is worth more than 79% of them ($914,176 against a typical $667,650), its price per square foot is higher than 86% of them ($479 against a typical $357), it is bigger than 49% of them (1,910 ft² against a typical 1,936 ft²), its lot is bigger than 94% of them (4.35 ac against a typical 0.19 ac) and it is newer than 12% of them (1990 against a typical 2003). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 2100 Highway 21, Boise, ID?

The 2025 property tax bill for 2100 Highway 21, Boise, ID was $2,627. The county assessed it at $796,363.

More homes on Highway 21

Closest homes

More homes in Boise 83716

Assigned schools

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