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Mobile HomeResidential
$1,984,719$2,545 / 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 72How 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

980 CASTLE ROCK RD

WALNUT CREEK, CA 94598
2
Beds
2
Baths
780 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.
2.33 ac
Lot SizeThe size of the land the home sits on, from county records.
1989
Year BuiltThe year the home was originally built, according to county records.
7
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$2M
$1.4M low$2.5M high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$103 (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.$9,300 (2026)
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$9,300
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$9,384

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.55
91
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
84
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
44
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
44
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.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.68 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.Mobile Home
StyleThe architectural style of the home, such as ranch or colonial.Mobile Home
CountyCONTRA COSTA
CoolingThe type of cooling or air conditioning in the home.Central
PoolWhether the property has a pool, and what kind, such as in-ground.No

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

H
Northgate High SchoolA
High · Grades 9–12 · 0.6 mi
E
Walnut Acres Elementary SchoolA-
Elementary · Grades KG–5 · 1.5 mi
M
Foothill Middle SchoolA
Middle · Grades 6–8 · 1.6 mi

District: Mount Diablo Unified School District

Neighborhood · ZIP 94598These 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.66
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 100.555

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.40%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.6%
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.30,028
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,143 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$177,207
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$206,742
Average tempThe average temperature here across a full year.58°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

980 Castle Rock Rd 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 91% of homes in Walnut Creek 94598
  • Among the highest price per square foot in Northgate
  • Among the smallest homes in Northgate
  • Among the largest lots in Northgate
  • Newer than 92% of homes in Walnut Creek 94598

What homes are worth in Walnut Creek 94598

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

This home
$344K$2.7M

This home is worth more than 91% of homes in Walnut Creek 94598.

How it measures up in Walnut Creek 94598

The dot is this home. The mark in the middle is the typical home in Walnut Creek 94598.

Estimated value$1,984,719
CheaperTypical $1,325,758Pricier

Pricier than 91% of homes nearby

Price per ft²$2545
CheaperTypical $623Pricier

Pricier than almost all homes nearby

Living area780 ft²
SmallerTypical 1,989 ft²Bigger

Bigger than 3% of homes nearby

Lot size2.33 ac
SmallerTypical 0.23 acBigger

Bigger than almost all homes nearby

Year built1989
OlderTypical 1971Newer

Newer than 92% of homes nearby

How 980 Castle Rock Rd ranks against every home in each area.
MeasureThis homeNorthgateWalnut Creek 94598Contra Costa County
Estimated valuepricier than$1,984,71978% of homes91% of homes91% of homes
Price per ft²pricier than$2545almost all homesalmost all homesalmost all homes
Living areabigger than780 ft²almost no homes3% of homes2% of homes
Lot sizebigger than2.33 acalmost all homesalmost all homes98% of homes
Year builtnewer than198986% of homes92% of homes70% of homes

About 980 Castle Rock Rd

How much is 980 Castle Rock Rd, Walnut Creek, CA worth?

The TopHap Estimate for 980 Castle Rock Rd, Walnut Creek, CA is $1,984,719 as of Sep 24, 2026. The likely range is $1,429,321 to $2,540,117. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 980 Castle Rock Rd, Walnut Creek, CA last sell?

980 Castle Rock Rd, Walnut Creek, CA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 980 Castle Rock Rd, Walnut Creek, CA?

980 Castle Rock Rd, Walnut Creek, CA has 2 bedrooms, 2 bathrooms and 780 square feet of living space.

When was 980 Castle Rock Rd, Walnut Creek, CA built?

980 Castle Rock Rd, Walnut Creek, CA was built in 1989, making it 37 years old. It is a mobile home home.

What schools serve 980 Castle Rock Rd, Walnut Creek, CA?

980 Castle Rock Rd, Walnut Creek, CA is assigned to Northgate High School (high), rated A; Walnut Acres Elementary School (elementary), rated A-; Foothill Middle School (middle), rated A. All sit in Mount Diablo Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 980 Castle Rock Rd, Walnut Creek, CA compare to other homes in Walnut Creek 94598?

Among the 9,779 homes in Walnut Creek 94598, it is worth more than 91% of them ($1,984,719 against a typical $1,325,758), its price per square foot is higher than almost all of them ($2545 against a typical $623), it is bigger than 3% of them (780 ft² against a typical 1,989 ft²), its lot is bigger than almost all of them (2.33 ac against a typical 0.23 ac) and it is newer than 92% of them (1989 against a typical 1971). Measured against all of Contra Costa County, it is worth more than 91% 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 980 Castle Rock Rd, Walnut Creek, CA?

The 2025 property tax bill for 980 Castle Rock Rd, Walnut Creek, CA was $103. The county assessed it at $9,300.

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