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Single Family ResidenceResidential
$1,280,171$237 / 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 92How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026
Last sold for $887,500 on May 21, 2021

121 N CASTELLO PL

BOISE, ID 83712
7
Beds
5
Baths
5,402 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.
0.5 ac
Lot SizeThe size of the land the home sits on, from county records.
2007
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
4
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$1.3M
$1.2M low$1.4M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$887,500 · May 21, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$17,329 (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.$1,703,600 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$2,005,200
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,703,600

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyADA
Lot (acres)The size of the land the home sits on, from county records.0.50
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
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.Yes
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 918 ft²Patio · 800 ft²

Transaction History(2)

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
Roosevelt Elementary SchoolA
Elementary · Grades PK–6 · 1.6 mi
H
Boise Senior High SchoolA-
High · Grades 9–12 · 2.8 mi
M
North Junior High SchoolA
Middle · Grades 7–9 · 3.0 mi

District: Boise City Independent School District 1

Neighborhood · ZIP 83712These 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.105
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.116
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.73

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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.36%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.0%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.11,027
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.440 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$110,343
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$156,221
Average tempThe average temperature here across a full year.47°F
Annual precipHow much rain and melted snow falls here in a typical year.21 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

121 N Castello Pl 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 most valuable homes in Ada County
  • Costs more per square foot than 67% of homes in Ada County
  • Among the largest homes in Ada County
  • Has a bigger lot than 91% of homes in East End
  • Newer than 91% of homes in East End

What homes are worth in Boise 83712

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

This home
$204K$2.1M

This home is worth more than 93% of homes in Boise 83712.

How it measures up in Boise 83712

The dot is this home. The mark in the middle is the typical home in Boise 83712.

Estimated value$1,280,171
CheaperTypical $476,219Pricier

Pricier than 93% of homes nearby

Price per ft²$237
CheaperTypical $213Pricier

Pricier than 63% of homes nearby

Living area5,402 ft²
SmallerTypical 2,244 ft²Bigger

Bigger than 97% of homes nearby

Lot size0.5 ac
SmallerTypical 0.21 acBigger

Bigger than 88% of homes nearby

Year built2007
OlderTypical 1980Newer

Newer than 87% of homes nearby

How 121 N Castello Pl ranks against every home in each area.
MeasureThis homeEast EndBoise 83712Ada County
Estimated valuepricier than$1,280,17197% of homes93% of homesalmost all homes
Price per ft²pricier than$23762% of homes63% of homes67% of homes
Living areabigger than5,402 ft²97% of homes97% of homesalmost all homes
Lot sizebigger than0.5 ac91% of homes88% of homes91% of homes
Year builtnewer than200791% of homes87% of homes66% of homes

About 121 N Castello Pl

How much is 121 N Castello Pl, Boise, ID worth?

The TopHap Estimate for 121 N Castello Pl, Boise, ID is $1,280,171 as of Aug 30, 2026. The likely range is $1,174,656 to $1,385,686. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 121 N Castello Pl, Boise, ID last sell?

121 N Castello Pl, Boise, ID last sold on May 21, 2021 for $887,500, according to the county's recorded deed.

How big is 121 N Castello Pl, Boise, ID?

121 N Castello Pl, Boise, ID has 7 bedrooms, 5 bathrooms, 5,402 square feet of living space and a 0.50-acre lot.

When was 121 N Castello Pl, Boise, ID built?

121 N Castello Pl, Boise, ID was built in 2007, making it 19 years old. The building has 2 stories.

What schools serve 121 N Castello Pl, Boise, ID?

121 N Castello Pl, Boise, ID is assigned to Roosevelt Elementary School (elementary), rated A; Boise Senior High School (high), rated A-; North Junior High School (middle), rated A. All sit in Boise City Independent School District 1. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 121 N Castello Pl, Boise, ID compare to other homes in Boise 83712?

Among the 3,261 homes in Boise 83712, it is worth more than 93% of them ($1,280,171 against a typical $476,219), its price per square foot is higher than 63% of them ($237 against a typical $213), it is bigger than 97% of them (5,402 ft² against a typical 2,244 ft²), its lot is bigger than 88% of them (0.5 ac against a typical 0.21 ac) and it is newer than 87% of them (2007 against a typical 1980). Measured against all of Ada County, it is worth more than almost all 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 121 N Castello Pl, Boise, ID?

The 2025 property tax bill for 121 N Castello Pl, Boise, ID was $17,329. The county assessed it at $1,703,600.

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