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Single Family ResidenceResidential
$505,749$321 / 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 96How 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 $284,000 on Sep 3, 2003

21 GRENNAN CT

VALLEJO, CA 94591
4
Beds
2
Baths
1,577 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.
1955
Year BuiltThe year the home was originally built, according to county records.
3
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

$506K
$488K low$524K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$284,000 · Sep 3, 2003

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,261 (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.$411,855 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$87,008
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$324,847
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$403,780
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$494,190

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.100 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.51%
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.1 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
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 · 238 ft²

Transaction History(7)

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(10)

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

E
Steffan Manor Elementary SchoolD
Elementary · Grades KG–5 · 0.2 mi
M
Hogan Middle SchoolD
Middle · Grades 6–8 · 0.7 mi
H
Jesse M. Bethel High SchoolC-
High · Grades 9–12 · 1.8 mi

District: Vallejo City Unified School District

Neighborhood · ZIP 94591These 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.92
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.88
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.423

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.25%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.9.2%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.55,629
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,429 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$102,391
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$135,131
Average tempThe average temperature here across a full year.59°F
Annual precipHow much rain and melted snow falls here in a typical year.23 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

21 Grennan Ct 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.

  • Older than 85% of homes in Solano County

What homes are worth in Vallejo 94591

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

This home
$265K$885K

This home is worth more than 39% of homes in Vallejo 94591.

How it measures up in Vallejo 94591

The dot is this home. The mark in the middle is the typical home in Vallejo 94591.

Estimated value$505,749
CheaperTypical $552,105Pricier

Pricier than 39% of homes nearby

Price per ft²$321
CheaperTypical $327Pricier

Pricier than 45% of homes nearby

Living area1,577 ft²
SmallerTypical 1,667 ft²Bigger

Bigger than 46% of homes nearby

Lot size0.15 ac
SmallerTypical 0.15 acBigger

Bigger than 53% of homes nearby

Year built1955
OlderTypical 1985Newer

Newer than 27% of homes nearby

How 21 Grennan Ct ranks against every home in each area.
MeasureThis homeVallejo 94591Solano County
Estimated valuepricier than$505,74939% of homes37% of homes
Price per ft²pricier than$32145% of homes43% of homes
Living areabigger than1,577 ft²46% of homes45% of homes
Lot sizebigger than0.15 ac53% of homes56% of homes
Year builtnewer than195527% of homes15% of homes

About 21 Grennan Ct

How much is 21 Grennan Ct, Vallejo, CA worth?

The TopHap Estimate for 21 Grennan Ct, Vallejo, CA is $505,749 as of Aug 30, 2026. The likely range is $487,788 to $523,710. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Grennan Ct, Vallejo, CA last sell?

21 Grennan Ct, Vallejo, CA last sold on Sep 3, 2003 for $284,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 21 Grennan Ct, Vallejo, CA?

21 Grennan Ct, Vallejo, CA has 4 bedrooms, 2 bathrooms, 1,577 square feet of living space and a 0.15-acre lot.

When was 21 Grennan Ct, Vallejo, CA built?

21 Grennan Ct, Vallejo, CA was built in 1955, making it 71 years old. The building has 3 stories.

What schools serve 21 Grennan Ct, Vallejo, CA?

21 Grennan Ct, Vallejo, CA is assigned to Steffan Manor Elementary School (elementary), rated D; Hogan Middle School (middle), rated D; Jesse M. Bethel High School (high), rated C-. All sit in Vallejo City Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Grennan Ct, Vallejo, CA compare to other homes in Vallejo 94591?

Among the 18,111 homes in Vallejo 94591, it is worth more than 39% of them ($505,749 against a typical $552,105), its price per square foot is higher than 45% of them ($321 against a typical $327), it is bigger than 46% of them (1,577 ft² against a typical 1,667 ft²), its lot is bigger than 53% of them (0.15 ac against a typical 0.15 ac) and it is newer than 27% of them (1955 against a typical 1985). Measured against all of Solano County, it is worth more than 37% 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 21 Grennan Ct, Vallejo, CA?

The 2025 property tax bill for 21 Grennan Ct, Vallejo, CA was $6,261. The county assessed it at $411,855.

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