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Single Family ResidenceResidential
$2,645,377$1,312 / 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 $1,300,000 on Nov 19, 2014

1017 ROSA AVE

SUNNYVALE, CA 94086
5
Beds
2.5
Baths
2,016 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.
1963
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
8
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

$2.6M
$2.4M low$2.9M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$1,300,000 · Nov 19, 2014

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$18,080 (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.$1,593,645 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$1,195,236
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$398,409
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,562,398

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.35
40
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
34
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
26
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
31
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
47
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.29 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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
CountySANTA CLARA
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.Wood (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Wood Shingle
HeatingThe type of heating system in the home.Yes
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(6)

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.

M
Peterson Middle SchoolA
Middle · Grades 6–8 · 0.6 mi
E
Braly Elementary SchoolA+
Elementary · Grades KG–5 · 0.8 mi
H
Adrian Wilcox High SchoolA-
High · Grades 9–12 · 1.2 mi

District: Santa Clara Unified School District

Neighborhood · ZIP 94086These 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.119
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.87
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.428

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.31%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.7%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.7%
PopulationHow many people live in this area.50,551
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.11,453 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$156,294
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$199,416
Average tempThe average temperature here across a full year.59°F
Annual precipHow much rain and melted snow falls here in a typical year.16 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.73%

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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

1017 Rosa 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 more than 93% of homes in Sunnyvale 94086
  • Costs more per square foot than 80% of homes in Santa Clara County
  • Bigger than 78% of homes in Ponderosa
  • Has a bigger lot than 86% of homes in Ponderosa
  • Older than 81% of homes in Ponderosa

What homes are worth in Sunnyvale 94086

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

This home
$592K$3.1M

This home is worth more than 93% of homes in Sunnyvale 94086.

How it measures up in Sunnyvale 94086

The dot is this home. The mark in the middle is the typical home in Sunnyvale 94086.

Estimated value$2,645,377
CheaperTypical $1,740,651Pricier

Pricier than 93% of homes nearby

Price per ft²$1312
CheaperTypical $1102Pricier

Pricier than 73% of homes nearby

Living area2,016 ft²
SmallerTypical 1,586 ft²Bigger

Bigger than 77% of homes nearby

Lot size0.17 ac
SmallerTypical 0.13 acBigger

Bigger than 85% of homes nearby

Year built1963
OlderTypical 1970Newer

Newer than 36% of homes nearby

How 1017 Rosa Ave ranks against every home in each area.
MeasureThis homePonderosaSunnyvale 94086Santa Clara County
Estimated valuepricier than$2,645,37791% of homes93% of homes82% of homes
Price per ft²pricier than$131275% of homes73% of homes80% of homes
Living areabigger than2,016 ft²78% of homes77% of homes68% of homes
Lot sizebigger than0.17 ac86% of homes85% of homes70% of homes
Year builtnewer than196319% of homes36% of homes38% of homes

About 1017 Rosa Ave

How much is 1017 Rosa Ave, Sunnyvale, CA worth?

The TopHap Estimate for 1017 Rosa Ave, Sunnyvale, CA is $2,645,377 as of Aug 30, 2026. The likely range is $2,377,658 to $2,913,096. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 1017 Rosa Ave, Sunnyvale, CA last sell?

1017 Rosa Ave, Sunnyvale, CA last sold on Nov 19, 2014 for $1,300,000, according to the county's recorded deed. TopHap holds 4 recorded sales for this parcel.

How big is 1017 Rosa Ave, Sunnyvale, CA?

1017 Rosa Ave, Sunnyvale, CA has 5 bedrooms, 2.5 bathrooms, 2,016 square feet of living space and a 0.17-acre lot.

When was 1017 Rosa Ave, Sunnyvale, CA built?

1017 Rosa Ave, Sunnyvale, CA was built in 1963, making it 63 years old. The building has 2 stories.

What schools serve 1017 Rosa Ave, Sunnyvale, CA?

1017 Rosa Ave, Sunnyvale, CA is assigned to Peterson Middle School (middle), rated A; Braly Elementary School (elementary), rated A+; Adrian Wilcox High School (high), rated A-. All sit in Santa Clara Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 1017 Rosa Ave, Sunnyvale, CA compare to other homes in Sunnyvale 94086?

Among the 9,850 homes in Sunnyvale 94086, it is worth more than 93% of them ($2,645,377 against a typical $1,740,651), its price per square foot is higher than 73% of them ($1312 against a typical $1102), it is bigger than 77% of them (2,016 ft² against a typical 1,586 ft²), its lot is bigger than 85% of them (0.17 ac against a typical 0.13 ac) and it is newer than 36% of them (1963 against a typical 1970). Measured against all of Santa Clara County, it is worth more than 82% 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 1017 Rosa Ave, Sunnyvale, CA?

The 2025 property tax bill for 1017 Rosa Ave, Sunnyvale, CA was $18,080. The county assessed it at $1,593,645.

More homes on Rosa Ave

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