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Single Family ResidenceResidential
$386,026$219 / 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 Jul 14, 2026

603 CASTLE ROCK AVE

MIDDLETON, ID 83644
4
Beds
3
Baths
1,759 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.
0.2 ac
Lot SizeThe size of the land the home sits on, from county records.
2004
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$386K
$365K low$407K high
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$122,106
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$97,685
Loan-to-ValueHow much is still owed on the home compared to what it is worth. 80% means loans equal 80% of our estimate, so it shifts when the estimate does.67%
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$263,920
CMG FIN'L · recorded Sep 22, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,423 (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.$384,700 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$111,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$273,700
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$389,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$384,700

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.0.20
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
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Porch · 220 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
Middleton Heights Elementary SchoolB+
Elementary · Grades PK–5 · 0.2 mi
M
Middleton Middle School
Middle · Grades 6–8 · 0.6 mi
H
Middleton High SchoolA
High · Grades 9–12 · 0.8 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%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
Company ownedWhether the owner is a company or trust rather than a person.Yes

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

603 Castle Rock 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.

  • Worth less than 82% of homes in Middleton 83644
  • Costs less per square foot than 85% of homes in Middleton 83644
  • Has a smaller lot than 65% of 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
$297K$1.6M

This home is worth more than 18% 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$386,026
CheaperTypical $533,691Pricier

Pricier than 18% of homes nearby

Price per ft²$219
CheaperTypical $277Pricier

Pricier than 15% of homes nearby

Living area1,759 ft²
SmallerTypical 2,001 ft²Bigger

Bigger than 38% of homes nearby

Lot size0.2 ac
SmallerTypical 0.25 acBigger

Bigger than 35% of homes nearby

Year built2004
OlderTypical 2012Newer

Newer than 38% of homes nearby

How 603 Castle Rock Ave ranks against every home in each area.
MeasureThis homeMiddleton 83644Canyon County
Estimated valuepricier than$386,02618% of homes38% of homes
Price per ft²pricier than$21915% of homes24% of homes
Living areabigger than1,759 ft²38% of homes53% of homes
Lot sizebigger than0.2 ac35% of homes50% of homes
Year builtnewer than200438% of homes57% of homes

About 603 Castle Rock Ave

How much is 603 Castle Rock Ave, Middleton, ID worth?

The TopHap Estimate for 603 Castle Rock Ave, Middleton, ID is $386,026 as of Jul 14, 2026. The likely range is $365,304 to $406,748. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 603 Castle Rock Ave, Middleton, ID last sell?

603 Castle Rock Ave, Middleton, ID last sold on Sep 22, 2020, according to the county's recorded deed.

How big is 603 Castle Rock Ave, Middleton, ID?

603 Castle Rock Ave, Middleton, ID has 4 bedrooms, 3 bathrooms, 1,759 square feet of living space and a 0.20-acre lot.

When was 603 Castle Rock Ave, Middleton, ID built?

603 Castle Rock Ave, Middleton, ID was built in 2004, making it 22 years old. The building has 1 story.

What schools serve 603 Castle Rock Ave, Middleton, ID?

603 Castle Rock Ave, Middleton, ID is assigned to Middleton Heights Elementary School (elementary), rated B+; Middleton Middle School (middle); Middleton High School (high), rated A. All sit in Middleton School District 134. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 603 Castle Rock Ave, Middleton, ID compare to other homes in Middleton 83644?

Among the 7,126 homes in Middleton 83644, it is worth more than 18% of them ($386,026 against a typical $533,691), its price per square foot is higher than 15% of them ($219 against a typical $277), it is bigger than 38% of them (1,759 ft² against a typical 2,001 ft²), its lot is bigger than 35% of them (0.2 ac against a typical 0.25 ac) and it is newer than 38% of them (2004 against a typical 2012). Measured against all of Canyon County, it is worth more than 38% 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 603 Castle Rock Ave, Middleton, ID?

The 2025 property tax bill for 603 Castle Rock Ave, Middleton, ID was $1,423. The county assessed it at $384,700.

Closest homes

More homes in Middleton 83644

Assigned schools

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