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Single Family ResidenceResidential
$705,666$391 / 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 81How 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 $700,000 on Dec 23, 2025

3278 GRAFTON ST

SIMI VALLEY, CA 93063
4
Beds
2
Baths
1,806 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.
0.15 ac
Lot SizeThe size of the land the home sits on, from county records.
1964
Year BuiltThe year the home was originally built, according to county records.
1
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

$706K
$574K low$837K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$700,000 · Dec 23, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,361 (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.$812,000 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$528,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$284,000
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$692,756

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.38
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
32
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
45
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
30
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
85
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
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.minimal

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
CountyVENTURA
Lot (acres)The size of the land the home sits on, from county records.0.15
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.Patio · 400 ft²Porch · 128 ft²

Transaction History(5)

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
Sycamore Elementary SchoolC+
Elementary · Grades KG–6 · 0.4 mi
M
Hillside Middle SchoolC+
Middle · Grades 6–8 · 1.7 mi
H
Simi Valley High SchoolB
High · Grades 9–12 · 2.8 mi

District: Simi Valley Unified School District

Neighborhood · ZIP 93063These 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.72
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 100.580

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.24%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.6%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.5%
PopulationHow many people live in this area.54,519
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,079 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$111,983
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$147,478
Average tempThe average temperature here across a full year.63°F
Annual precipHow much rain and melted snow falls here in a typical year.18 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

3278 Grafton St 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 73% of homes in Simi Valley 93063
  • Costs less per square foot than 89% of homes in Simi Valley 93063
  • Has a smaller lot than 67% of homes in Simi Valley 93063
  • Older than 74% of homes in Simi Valley 93063

What homes are worth in Simi Valley 93063

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

This home
$403K$1.5M

This home is worth more than 27% of homes in Simi Valley 93063.

How it measures up in Simi Valley 93063

The dot is this home. The mark in the middle is the typical home in Simi Valley 93063.

Estimated value$705,666
CheaperTypical $804,481Pricier

Pricier than 27% of homes nearby

Price per ft²$391
CheaperTypical $470Pricier

Pricier than 11% of homes nearby

Living area1,806 ft²
SmallerTypical 1,690 ft²Bigger

Bigger than 57% of homes nearby

Lot size0.15 ac
SmallerTypical 0.17 acBigger

Bigger than 33% of homes nearby

Year built1964
OlderTypical 1976Newer

Newer than 26% of homes nearby

How 3278 Grafton St ranks against every home in each area.
MeasureThis homeSimi Valley 93063Ventura County
Estimated valuepricier than$705,66627% of homes29% of homes
Price per ft²pricier than$39111% of homes11% of homes
Living areabigger than1,806 ft²57% of homes57% of homes
Lot sizebigger than0.15 ac33% of homes42% of homes
Year builtnewer than196426% of homes27% of homes

About 3278 Grafton St

How much is 3278 Grafton St, Simi Valley, CA worth?

The TopHap Estimate for 3278 Grafton St, Simi Valley, CA is $705,666 as of Aug 30, 2026. The likely range is $574,168 to $837,164. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3278 Grafton St, Simi Valley, CA last sell?

3278 Grafton St, Simi Valley, CA last sold on Dec 23, 2025 for $700,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 3278 Grafton St, Simi Valley, CA?

3278 Grafton St, Simi Valley, CA has 4 bedrooms, 2 bathrooms, 1,806 square feet of living space and a 0.15-acre lot.

When was 3278 Grafton St, Simi Valley, CA built?

3278 Grafton St, Simi Valley, CA was built in 1964, making it 62 years old. The building has 1 story.

What schools serve 3278 Grafton St, Simi Valley, CA?

3278 Grafton St, Simi Valley, CA is assigned to Sycamore Elementary School (elementary), rated C+; Hillside Middle School (middle), rated C+; Simi Valley High School (high), rated B. All sit in Simi Valley Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3278 Grafton St, Simi Valley, CA compare to other homes in Simi Valley 93063?

Among the 17,139 homes in Simi Valley 93063, it is worth more than 27% of them ($705,666 against a typical $804,481), its price per square foot is higher than 11% of them ($391 against a typical $470), it is bigger than 57% of them (1,806 ft² against a typical 1,690 ft²), its lot is bigger than 33% of them (0.15 ac against a typical 0.17 ac) and it is newer than 26% of them (1964 against a typical 1976). Measured against all of Ventura County, it is worth more than 29% 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 3278 Grafton St, Simi Valley, CA?

The 2025 property tax bill for 3278 Grafton St, Simi Valley, CA was $8,361. The county assessed it at $812,000.

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