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Single Family ResidenceResidential
$830,457$792 / 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 90How 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

320 HOWARD ST

PETALUMA, CA 94952
1
Beds
1
Baths
1,049 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.
0.21 ac
Lot SizeThe size of the land the home sits on, from county records.
1948
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
1
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$830K
$751K low$910K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$841 (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.$61,661 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$21,992
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$39,669
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$60,453

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.22
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
76
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.
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.minimal

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
CountySONOMA
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.1951
Lot (acres)The size of the land the home sits on, from county records.0.21
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
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
Valley Vista Elementary SchoolD
Elementary · Grades KG–6 · 0.4 mi
M
Petaluma Junior High SchoolC-
Middle · Grades 7–8 · 0.6 mi
H
Petaluma High SchoolA-
High · Grades 9–12 · 0.6 mi

District: Petaluma Joint Union High School District

Neighborhood · ZIP 94952These 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.84
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.359

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.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.30%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.35,634
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.160 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$113,828
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$154,802
Average tempThe average temperature here across a full year.57°F
Annual precipHow much rain and melted snow falls here in a typical year.39 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

320 Howard St 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 72% of homes in Petaluma 94952
  • Costs more per square foot than 92% of homes in Oakhill Brewster
  • Smaller than 88% of homes in Oakhill Brewster
  • Has a bigger lot than 71% of homes in Oakhill Brewster
  • Older than 88% of homes in Sonoma County

What homes are worth in Petaluma 94952

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

This home
$503K$2.3M

This home is worth more than 28% of homes in Petaluma 94952.

How it measures up in Petaluma 94952

The dot is this home. The mark in the middle is the typical home in Petaluma 94952.

Estimated value$830,457
CheaperTypical $1,020,356Pricier

Pricier than 28% of homes nearby

Price per ft²$792
CheaperTypical $606Pricier

Pricier than 86% of homes nearby

Living area1,049 ft²
SmallerTypical 1,689 ft²Bigger

Bigger than 14% of homes nearby

Lot size0.21 ac
SmallerTypical 0.18 acBigger

Bigger than 56% of homes nearby

Year built1948
OlderTypical 1964Newer

Newer than 32% of homes nearby

How 320 Howard St ranks against every home in each area.
MeasureThis homeOakhill BrewsterPetaluma 94952Sonoma County
Estimated valuepricier than$830,45731% of homes28% of homes58% of homes
Price per ft²pricier than$79292% of homes86% of homes92% of homes
Living areabigger than1,049 ft²12% of homes14% of homes14% of homes
Lot sizebigger than0.21 ac71% of homes56% of homes63% of homes
Year builtnewer than194833% of homes32% of homes12% of homes

About 320 Howard St

How much is 320 Howard St, Petaluma, CA worth?

The TopHap Estimate for 320 Howard St, Petaluma, CA is $830,457 as of Aug 30, 2026. The likely range is $750,590 to $910,324. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 320 Howard St, Petaluma, CA last sell?

320 Howard St, Petaluma, CA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 320 Howard St, Petaluma, CA?

320 Howard St, Petaluma, CA has 1 bedrooms, 1 bathrooms, 1,049 square feet of living space and a 0.21-acre lot.

When was 320 Howard St, Petaluma, CA built?

320 Howard St, Petaluma, CA was built in 1948, making it 78 years old. The building has 1 story.

What schools serve 320 Howard St, Petaluma, CA?

320 Howard St, Petaluma, CA is assigned to Valley Vista Elementary School (elementary), rated D; Petaluma Junior High School (middle), rated C-; Petaluma High School (high), rated A-. All sit in Petaluma Joint Union High School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 320 Howard St, Petaluma, CA compare to other homes in Petaluma 94952?

Among the 10,076 homes in Petaluma 94952, it is worth more than 28% of them ($830,457 against a typical $1,020,356), its price per square foot is higher than 86% of them ($792 against a typical $606), it is bigger than 14% of them (1,049 ft² against a typical 1,689 ft²), its lot is bigger than 56% of them (0.21 ac against a typical 0.18 ac) and it is newer than 32% of them (1948 against a typical 1964). Measured against all of Sonoma County, it is worth more than 58% 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 320 Howard St, Petaluma, CA?

The 2025 property tax bill for 320 Howard St, Petaluma, CA was $841. The county assessed it at $61,661.

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