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TownhouseResidential
$282,875$336 / 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

100 TAMMY CIR

BAY POINT, CA 94565
2
Beds
1
Baths
842 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.
855 ft²
Lot SizeThe size of the land the home sits on, from county records.
1986
Year BuiltThe year the home was originally built, according to county records.
2
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.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$283K
$274K low$291K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,364 (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.$144,847 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$45,024
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$99,823
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$142,008

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.33
1
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.
42
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
33
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
14
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Townhouse
StyleThe architectural style of the home, such as ranch or colonial.Townhouse
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.1987
Lot (acres)The size of the land the home sits on, from county records.0.02
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(1)

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
Bel Air Elementary SchoolF
Elementary · Grades KG–5 · 0.8 mi
M
Riverview Middle SchoolD-
Middle · Grades 6–8 · 1.0 mi
H
Mt. Diablo High SchoolD
High · Grades 9–12 · 5.5 mi

District: Mount Diablo Unified School District

Neighborhood · ZIP 94565These 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.83
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.85
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.393

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.16%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.11%
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.98,541
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,554 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$86,849
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$110,627
Average tempThe average temperature here across a full year.59°F
Annual precipHow much rain and melted snow falls here in a typical year.19 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

100 Tammy Cir 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.

  • Among the least valuable homes in Contra Costa County
  • Costs less per square foot than 80% of homes in Contra Costa County
  • Smaller than 96% of homes in Pittsburg 94565
  • Has a smaller lot than 98% of homes in Pittsburg 94565
  • Newer than 65% of homes in Contra Costa County

What homes are worth in Pittsburg 94565

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

This home
$279K$878K

This home is worth more than 2% of homes in Pittsburg 94565.

How it measures up in Pittsburg 94565

The dot is this home. The mark in the middle is the typical home in Pittsburg 94565.

Estimated value$282,875
CheaperTypical $520,806Pricier

Pricier than 2% of homes nearby

Price per ft²$336
CheaperTypical $339Pricier

Pricier than 48% of homes nearby

Living area842 ft²
SmallerTypical 1,497 ft²Bigger

Bigger than 4% of homes nearby

Lot size855 ft²
SmallerTypical 0.14 acBigger

Bigger than 2% of homes nearby

Year built1986
OlderTypical 1980Newer

Newer than 61% of homes nearby

How 100 Tammy Cir ranks against every home in each area.
MeasureThis homePittsburg 94565Contra Costa County
Estimated valuepricier than$282,8752% of homesalmost no homes
Price per ft²pricier than$33648% of homes20% of homes
Living areabigger than842 ft²4% of homes4% of homes
Lot sizebigger than855 ft²2% of homes4% of homes
Year builtnewer than198661% of homes65% of homes

About 100 Tammy Cir

How much is 100 Tammy Cir, Bay Point, CA worth?

The TopHap Estimate for 100 Tammy Cir, Bay Point, CA is $282,875 as of Sep 24, 2026. The likely range is $274,462 to $291,288. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 100 Tammy Cir, Bay Point, CA last sell?

100 Tammy Cir, Bay Point, CA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 100 Tammy Cir, Bay Point, CA?

100 Tammy Cir, Bay Point, CA has 2 bedrooms, 1 bathrooms, 842 square feet of living space and a 0.02-acre lot.

When was 100 Tammy Cir, Bay Point, CA built?

100 Tammy Cir, Bay Point, CA was built in 1986, making it 40 years old. It is a townhouse home. The building has 2 stories.

What schools serve 100 Tammy Cir, Bay Point, CA?

100 Tammy Cir, Bay Point, CA is assigned to Bel Air Elementary School (elementary), rated F; Riverview Middle School (middle), rated D-; Mt. Diablo High School (high), rated D. All sit in Mount Diablo Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 100 Tammy Cir, Bay Point, CA compare to other homes in Pittsburg 94565?

Among the 24,012 homes in Pittsburg 94565, it is worth more than 2% of them ($282,875 against a typical $520,806), its price per square foot is higher than 48% of them ($336 against a typical $339), it is bigger than 4% of them (842 ft² against a typical 1,497 ft²), its lot is bigger than 2% of them (855 ft² against a typical 0.14 ac) and it is newer than 61% of them (1986 against a typical 1980). Measured against all of Contra Costa County, it is worth more than almost no 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 100 Tammy Cir, Bay Point, CA?

The 2025 property tax bill for 100 Tammy Cir, Bay Point, CA was $2,364. The county assessed it at $144,847.

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