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Single Family ResidenceResidential
$495,500$635 / 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 Jul 14, 2026

18240 RIVERSIDE DR

EL VERANO, CA 95433
2
Beds
1
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.
0.23 ac
Lot SizeThe size of the land the home sits on, from county records.
1964
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
2
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$496K
$476K low$515K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,675 (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.$55,225 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$24,175
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$31,050
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$54,143

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.39
100
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
60
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
36
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.171 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
StyleThe architectural style of the home, such as ranch or colonial.Custom Design
CountySONOMA
Lot (acres)The size of the land the home sits on, from county records.0.23
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
HeatingThe type of heating system in the home.None
CoolingThe type of cooling or air conditioning in the home.Yes
FireplaceWhether the home has a fireplace, and what kind.Yes
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.

E
El Verano Elementary SchoolC-
Elementary · Grades KG–5 · 0.3 mi
M
Altimira Middle SchoolD
Middle · Grades 6–8 · 0.6 mi
H
Sonoma Valley High SchoolB+
High · Grades 9–12 · 2.5 mi

District: Sonoma Valley Unified School District

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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

18240 Riverside 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.

  • Worth less than 90% of homes in Sonoma County
  • Costs more per square foot than 80% of homes in Sonoma County
  • Smaller than 96% of homes in Sonoma County
  • Has a bigger lot than 65% of homes in ZIP 95433
  • Older than 71% of homes in Sonoma County

What homes are worth in ZIP 95433

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

This home
$352K$2.3M

This home is worth more than 17% of homes in ZIP 95433.

How it measures up in ZIP 95433

The dot is this home. The mark in the middle is the typical home in ZIP 95433.

Estimated value$495,500
CheaperTypical $625,096Pricier

Pricier than 17% of homes nearby

Price per ft²$635
CheaperTypical $528Pricier

Pricier than 76% of homes nearby

Living area780 ft²
SmallerTypical 1,284 ft²Bigger

Bigger than 9% of homes nearby

Lot size0.23 ac
SmallerTypical 0.16 acBigger

Bigger than 65% of homes nearby

Year built1964
OlderTypical 1975Newer

Newer than 31% of homes nearby

How 18240 Riverside Dr ranks against every home in each area.
MeasureThis homeZIP 95433Sonoma County
Estimated valuepricier than$495,50017% of homes10% of homes
Price per ft²pricier than$63576% of homes80% of homes
Living areabigger than780 ft²9% of homes4% of homes
Lot sizebigger than0.23 ac65% of homes65% of homes
Year builtnewer than196431% of homes29% of homes

About 18240 Riverside Dr

How much is 18240 Riverside Dr, El Verano, CA worth?

The TopHap Estimate for 18240 Riverside Dr, El Verano, CA is $495,500 as of Jul 14, 2026. The likely range is $476,308 to $514,692. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18240 Riverside Dr, El Verano, CA last sell?

18240 Riverside Dr, El Verano, CA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 18240 Riverside Dr, El Verano, CA?

18240 Riverside Dr, El Verano, CA has 2 bedrooms, 1 bathrooms, 780 square feet of living space and a 0.23-acre lot.

When was 18240 Riverside Dr, El Verano, CA built?

18240 Riverside Dr, El Verano, CA was built in 1964, making it 62 years old. It is a custom design home. The building has 1 story.

What schools serve 18240 Riverside Dr, El Verano, CA?

18240 Riverside Dr, El Verano, CA is assigned to El Verano Elementary School (elementary), rated C-; Altimira Middle School (middle), rated D; Sonoma Valley High School (high), rated B+. All sit in Sonoma Valley Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 18240 Riverside Dr, El Verano, CA compare to other homes in ZIP 95433?

Among the 251 homes in ZIP 95433, it is worth more than 17% of them ($495,500 against a typical $625,096), its price per square foot is higher than 76% of them ($635 against a typical $528), it is bigger than 9% of them (780 ft² against a typical 1,284 ft²), its lot is bigger than 65% of them (0.23 ac against a typical 0.16 ac) and it is newer than 31% of them (1964 against a typical 1975). Measured against all of Sonoma County, it is worth more than 10% 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 18240 Riverside Dr, El Verano, CA?

The 2025 property tax bill for 18240 Riverside Dr, El Verano, CA was $2,675. The county assessed it at $55,225.

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