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Rural ResidenceResidential
$740,905$259 / 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 80How 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

HOSIE AVE

BYRON, CA 94514
0
Baths
2,861 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.
2.1 ac
Lot SizeThe size of the land the home sits on, from county records.
1920
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$741K
$594K low$888K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,846 (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.$245,316 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$28,260
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$217,056
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$240,506

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
25
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
78
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
47
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
17
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
25
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.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.Rural Residence
CountyCONTRA COSTA
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.1960
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(2)

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
Excelsior Middle SchoolB-
Middle · Grades 6–8 · 0.5 mi
E
Discovery Bay Elementary SchoolA-
Elementary · Grades KG–5 · 3.0 mi
H
Liberty High SchoolB
High · Grades 9–12 · 5.5 mi

District: Byron Union Elementary School District

Neighborhood · ZIP 94514These 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.61
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.80
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.400

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.96%
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.6.3%
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.1,751
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.37 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$127,654
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$161,338
Average tempThe average temperature here across a full year.60°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.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

Hosie 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 69% of homes in Byron 94514
  • Costs less per square foot than 96% of homes in Contra Costa County
  • Bigger than 90% of homes in Byron 94514
  • Has a bigger lot than 98% of homes in Contra Costa County
  • Among the oldest homes in Contra Costa County

What homes are worth in Byron 94514

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

This home
$335K$1.8M

This home is worth more than 69% of homes in Byron 94514.

How it measures up in Byron 94514

The dot is this home. The mark in the middle is the typical home in Byron 94514.

Estimated value$740,905
CheaperTypical $613,672Pricier

Pricier than 69% of homes nearby

Price per ft²$259
CheaperTypical $401Pricier

Pricier than 6% of homes nearby

Living area2,861 ft²
SmallerTypical 1,504 ft²Bigger

Bigger than 90% of homes nearby

Lot size2.1 ac
SmallerTypical 1.04 acBigger

Bigger than 62% of homes nearby

Year built1920
OlderTypical 1966Newer

Newer than 18% of homes nearby

How Hosie Ave ranks against every home in each area.
MeasureThis homeByron 94514Contra Costa County
Estimated valuepricier than$740,90569% of homes50% of homes
Price per ft²pricier than$2596% of homes4% of homes
Living areabigger than2,861 ft²90% of homes86% of homes
Lot sizebigger than2.1 ac62% of homes98% of homes
Year builtnewer than192018% of homesalmost no homes

About Hosie Ave

How much is Hosie Ave, Byron, CA worth?

The TopHap Estimate for Hosie Ave, Byron, CA is $740,905 as of Sep 24, 2026. The likely range is $593,659 to $888,151. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did Hosie Ave, Byron, CA last sell?

Hosie Ave, Byron, CA last sold on Jan 1, 1900, according to the county's recorded deed.

When was Hosie Ave, Byron, CA built?

Hosie Ave, Byron, CA was built in 1920, making it 106 years old. The building has 1 story.

What schools serve Hosie Ave, Byron, CA?

Hosie Ave, Byron, CA is assigned to Excelsior Middle School (middle), rated B-; Discovery Bay Elementary School (elementary), rated A-; Liberty High School (high), rated B. All sit in Byron Union Elementary School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does Hosie Ave, Byron, CA compare to other homes in Byron 94514?

Among the 297 homes in Byron 94514, it is worth more than 69% of them ($740,905 against a typical $613,672), its price per square foot is higher than 6% of them ($259 against a typical $401), it is bigger than 90% of them (2,861 ft² against a typical 1,504 ft²), its lot is bigger than 62% of them (2.1 ac against a typical 1.04 ac) and it is newer than 18% of them (1920 against a typical 1966). Measured against all of Contra Costa County, it is worth more than 50% 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 Hosie Ave, Byron, CA?

The 2025 property tax bill for Hosie Ave, Byron, CA was $4,846. The county assessed it at $245,316.

More homes on Hosie Ave

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Assigned schools

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