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Single Family ResidenceResidential
$346,382$245 / 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 90How 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 $359,000 on Apr 4, 2025

16318 W KEY ESTRELLA DR

SURPRISE, AZ 85374
2
Baths
1,414 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.
0.17 ac
Lot SizeThe size of the land the home sits on, from county records.
1999
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
5
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$346K
$313K low$380K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$359,000 · Apr 4, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,184 (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.$31,670 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$31,670
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$316,700

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.33 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.0.2 percent flood zone

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
CountyMaricopa
Lot (acres)The size of the land the home sits on, from county records.0.17
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
HeatingThe type of heating system in the home.Yes
CoolingThe type of cooling or air conditioning in the home.Refrigerator
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Patio · 208 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
Kingswood Elementary SchoolB+
Elementary · Grades PK–8 · 1.5 mi
H
Willow Canyon High SchoolB
High · Grades 9–12 · 2.2 mi

District: Dysart Unified District

Neighborhood · ZIP 85374These 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.107
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.106
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.49

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.86%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.20%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.3%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.7%
PopulationHow many people live in this area.43,541
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,565 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$76,899
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$93,618
Average tempThe average temperature here across a full year.70°F
Annual precipHow much rain and melted snow falls here in a typical year.10 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.86%

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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

16318 W Key Estrella Dr 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 91% of homes in Sun City Grand
  • Costs less per square foot than 72% of homes in Sun City Grand
  • Smaller than 80% of homes in Sun City Grand
  • Has a smaller lot than 73% of homes in Sun City Grand

What homes are worth in Surprise 85374

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

This home
$221K$729K

This home is worth more than 26% of homes in Surprise 85374.

How it measures up in Surprise 85374

The dot is this home. The mark in the middle is the typical home in Surprise 85374.

Estimated value$346,382
CheaperTypical $387,364Pricier

Pricier than 26% of homes nearby

Price per ft²$245
CheaperTypical $239Pricier

Pricier than 57% of homes nearby

Living area1,414 ft²
SmallerTypical 1,640 ft²Bigger

Bigger than 34% of homes nearby

Lot size0.17 ac
SmallerTypical 0.15 acBigger

Bigger than 64% of homes nearby

Year built1999
OlderTypical 1999Newer

Newer than 58% of homes nearby

How 16318 W Key Estrella Dr ranks against every home in each area.
MeasureThis homeSun City GrandSurprise 85374Maricopa County
Estimated valuepricier than$346,3829% of homes26% of homes22% of homes
Price per ft²pricier than$24528% of homes57% of homes38% of homes
Living areabigger than1,414 ft²20% of homes34% of homes26% of homes
Lot sizebigger than0.17 ac27% of homes64% of homes56% of homes
Year builtnewer than199939% of homes58% of homes61% of homes

About 16318 W Key Estrella Dr

How much is 16318 W Key Estrella Dr, Surprise, AZ worth?

The TopHap Estimate for 16318 W Key Estrella Dr, Surprise, AZ is $346,382 as of Aug 30, 2026. The likely range is $312,634 to $380,130. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 16318 W Key Estrella Dr, Surprise, AZ last sell?

16318 W Key Estrella Dr, Surprise, AZ last sold on Apr 4, 2025 for $359,000, according to the county's recorded deed.

How big is 16318 W Key Estrella Dr, Surprise, AZ?

16318 W Key Estrella Dr, Surprise, AZ has 2 bathrooms, 1,414 square feet of living space and a 0.17-acre lot.

When was 16318 W Key Estrella Dr, Surprise, AZ built?

16318 W Key Estrella Dr, Surprise, AZ was built in 1999, making it 27 years old. The building has 1 story.

What schools serve 16318 W Key Estrella Dr, Surprise, AZ?

16318 W Key Estrella Dr, Surprise, AZ is assigned to Kingswood Elementary School (elementary), rated B+; Willow Canyon High School (high), rated B. All sit in Dysart Unified District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 16318 W Key Estrella Dr, Surprise, AZ compare to other homes in Surprise 85374?

Among the 19,822 homes in Surprise 85374, it is worth more than 26% of them ($346,382 against a typical $387,364), its price per square foot is higher than 57% of them ($245 against a typical $239), it is bigger than 34% of them (1,414 ft² against a typical 1,640 ft²), its lot is bigger than 64% of them (0.17 ac against a typical 0.15 ac) and it is newer than 58% of them (1999 against a typical 1999). Measured against all of Maricopa County, it is worth more than 22% 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 16318 W Key Estrella Dr, Surprise, AZ?

The 2025 property tax bill for 16318 W Key Estrella Dr, Surprise, AZ was $2,184. The county assessed it at $31,670.

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