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Single Family ResidentialResidential
$435,149$1,674 / 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 75How 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

20 PROFFER

IDAHO CITY, ID 83631
2
Beds
1
Baths
260 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.
5.29 ac
Lot SizeThe size of the land the home sits on, from county records.
1940
Year BuiltThe year the home was originally built, according to county records.

Valuation

$435K
$326K low$544K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,207 (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.$284,601 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$189,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$95,101
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$310,038
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$284,601

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.49
29
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
85
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
51
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
58
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.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.27 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.6%

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
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.1963
Lot (acres)The size of the land the home sits on, from county records.5.29
CoolingThe type of cooling or air conditioning in the home.None
FireplaceWhether the home has a fireplace, and what kind.Yes
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 · 20 ft²Patio · 444 ft²Outdoor kitchen

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

M
Idaho City High SchoolC+
Middle · Grades 7–12 · 0.2 mi
E
Basin Elementary SchoolB-
Elementary · Grades PK–6 · 0.3 mi

District: Basin School District 72

Neighborhood · ZIP 83631These 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.163
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 100.129

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.70%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.8.4%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.3%
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.998
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.$61,341
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$66,360
Average tempThe average temperature here across a full year.45°F
Annual precipHow much rain and melted snow falls here in a typical year.27 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

20 Proffer 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.

  • Costs more per square foot than 80% of homes in Idaho City 83631
  • Smaller than 79% of homes in Boise County
  • Has a bigger lot than 87% of homes in Idaho City 83631
  • Older than 96% of homes in Boise County

What homes are worth in Idaho City 83631

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

This home
$141K$853K

This home is worth more than 57% of homes in Idaho City 83631.

How it measures up in Idaho City 83631

The dot is this home. The mark in the middle is the typical home in Idaho City 83631.

Estimated value$435,149
CheaperTypical $406,981Pricier

Pricier than 57% of homes nearby

Price per ft²$1674
CheaperTypical $530Pricier

Pricier than 80% of homes nearby

Living area260 ft²
SmallerTypical 639 ft²Bigger

Bigger than 24% of homes nearby

Lot size5.29 ac
SmallerTypical 1.39 acBigger

Bigger than 87% of homes nearby

Year built1940
OlderTypical 1994Newer

Newer than 7% of homes nearby

How 20 Proffer ranks against every home in each area.
MeasureThis homeIdaho City 83631Boise County
Estimated valuepricier than$435,14957% of homes41% of homes
Price per ft²pricier than$167480% of homes79% of homes
Living areabigger than260 ft²24% of homes21% of homes
Lot sizebigger than5.29 ac87% of homes84% of homes
Year builtnewer than19407% of homes4% of homes

About 20 Proffer

How much is 20 Proffer, Idaho City, ID worth?

The TopHap Estimate for 20 Proffer, Idaho City, ID is $435,149 as of Oct 21, 2026. The likely range is $326,413 to $543,885. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 20 Proffer, Idaho City, ID last sell?

20 Proffer, Idaho City, ID last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 20 Proffer, Idaho City, ID?

20 Proffer, Idaho City, ID has 2 bedrooms, 1 bathrooms, 260 square feet of living space and a 5.29-acre lot.

When was 20 Proffer, Idaho City, ID built?

20 Proffer, Idaho City, ID was built in 1940, making it 86 years old.

What schools serve 20 Proffer, Idaho City, ID?

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

How does 20 Proffer, Idaho City, ID compare to other homes in Idaho City 83631?

Among the 1,104 homes in Idaho City 83631, it is worth more than 57% of them ($435,149 against a typical $406,981), its price per square foot is higher than 80% of them ($1674 against a typical $530), it is bigger than 24% of them (260 ft² against a typical 639 ft²), its lot is bigger than 87% of them (5.29 ac against a typical 1.39 ac) and it is newer than 7% of them (1940 against a typical 1994). Measured against all of Boise County, it is worth more than 41% 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 20 Proffer, Idaho City, ID?

The 2025 property tax bill for 20 Proffer, Idaho City, ID was $1,207. The county assessed it at $284,601.

More homes on Proffer

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