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Single Family ResidenceResidential
$578,728$305 / 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 97How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026
Last sold for $226,000 on Feb 19, 2013

644 DUNCAN DR

VACAVILLE, CA 95687
4
Beds
2.5
Baths
1,895 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.
1978
Year BuiltThe year the home was originally built, according to county records.
3
StoriesHow many floors the home has above ground.
6
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

$579K
$559K low$598K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$226,000 · Feb 19, 2013

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,416 (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.$481,637 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$116,056
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$365,581
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$472,194
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$560,520

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.37
32
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
44
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
51
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
40
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
21
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.7 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.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
CountySOLANO
Lot (acres)The size of the land the home sits on, from county records.0.15
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Central
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 · 350 ft²

Transaction History(8)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Foreclosure Filings(5)

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Jean Callison Elementary SchoolC-
Elementary · Grades KG–6 · 0.4 mi
M
Vaca Pena Middle SchoolD+
Middle · Grades 7–8 · 0.5 mi
H
Will C. Wood High SchoolB
High · Grades 9–12 · 1.4 mi

District: Vacaville Unified School District

Neighborhood · ZIP 95687These 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.78
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.83
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.377

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.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.18%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.70,313
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,711 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$102,054
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$124,804
Average tempThe average temperature here across a full year.60°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.78%

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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

644 Duncan 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.

  • Costs less per square foot than 78% of homes in Vacaville 95687
  • Bigger than 67% of homes in Vacaville 95687
  • Older than 68% of homes in Vacaville 95687

What homes are worth in Vacaville 95687

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

This home
$297K$919K

This home is worth more than 52% of homes in Vacaville 95687.

How it measures up in Vacaville 95687

The dot is this home. The mark in the middle is the typical home in Vacaville 95687.

Estimated value$578,728
CheaperTypical $571,063Pricier

Pricier than 52% of homes nearby

Price per ft²$305
CheaperTypical $340Pricier

Pricier than 22% of homes nearby

Living area1,895 ft²
SmallerTypical 1,614 ft²Bigger

Bigger than 67% of homes nearby

Lot size0.15 ac
SmallerTypical 0.14 acBigger

Bigger than 59% of homes nearby

Year built1978
OlderTypical 1989Newer

Newer than 32% of homes nearby

How 644 Duncan Dr ranks against every home in each area.
MeasureThis homeVacaville 95687Solano County
Estimated valuepricier than$578,72852% of homes56% of homes
Price per ft²pricier than$30522% of homes32% of homes
Living areabigger than1,895 ft²67% of homes64% of homes
Lot sizebigger than0.15 ac59% of homes56% of homes
Year builtnewer than197832% of homes42% of homes

About 644 Duncan Dr

How much is 644 Duncan Dr, Vacaville, CA worth?

The TopHap Estimate for 644 Duncan Dr, Vacaville, CA is $578,728 as of Sep 24, 2026. The likely range is $559,176 to $598,280. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 644 Duncan Dr, Vacaville, CA last sell?

644 Duncan Dr, Vacaville, CA last sold on Feb 19, 2013 for $226,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 644 Duncan Dr, Vacaville, CA?

644 Duncan Dr, Vacaville, CA has 4 bedrooms, 2.5 bathrooms, 1,895 square feet of living space and a 0.15-acre lot.

When was 644 Duncan Dr, Vacaville, CA built?

644 Duncan Dr, Vacaville, CA was built in 1978, making it 48 years old. The building has 3 stories.

What schools serve 644 Duncan Dr, Vacaville, CA?

644 Duncan Dr, Vacaville, CA is assigned to Jean Callison Elementary School (elementary), rated C-; Vaca Pena Middle School (middle), rated D+; Will C. Wood High School (high), rated B. All sit in Vacaville Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 644 Duncan Dr, Vacaville, CA compare to other homes in Vacaville 95687?

Among the 19,609 homes in Vacaville 95687, it is worth more than 52% of them ($578,728 against a typical $571,063), its price per square foot is higher than 22% of them ($305 against a typical $340), it is bigger than 67% of them (1,895 ft² against a typical 1,614 ft²), its lot is bigger than 59% of them (0.15 ac against a typical 0.14 ac) and it is newer than 32% of them (1978 against a typical 1989). Measured against all of Solano County, it is worth more than 56% 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 644 Duncan Dr, Vacaville, CA?

The 2025 property tax bill for 644 Duncan Dr, Vacaville, CA was $5,416. The county assessed it at $481,637.

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