Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$442,414$773 / 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 79How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026

617 WALNUT ST

PETALUMA, CA 94952
1
Beds
1
Baths
572 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.
2,784 ft²
Lot SizeThe size of the land the home sits on, from county records.
1937
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

$442K
$351K low$534K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$514 (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.$24,958 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$11,472
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$13,486
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$24,470

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
StyleThe architectural style of the home, such as ranch or colonial.Custom Design
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.1945
Lot (acres)The size of the land the home sits on, from county records.0.06
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.None
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.

M
Petaluma Junior High SchoolB-
Middle · Grades 7–8 · 0.7 mi
H
Petaluma High SchoolB
High · Grades 9–12 · 0.9 mi
E
McKinley Elementary SchoolB
Elementary · Grades KG–6 · 1.0 mi

District: Petaluma City Elementary 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%

Owner Tools

Do you own this home?
Claim this home

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

617 Walnut 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.

  • Among the least valuable homes in Oakhill Brewster
  • Costs more per square foot than 91% of homes in Sonoma County
  • Among the smallest homes in Oakhill Brewster
  • Has a smaller lot than 92% of homes in Petaluma 94952
  • Older than 92% 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
$537K$2.3M

This home is worth less than almost all 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$442,414
CheaperTypical $1,031,796Pricier

Cheaper than almost all homes nearby

Price per ft²$773
CheaperTypical $604Pricier

Pricier than 81% of homes nearby

Living area572 ft²
SmallerTypical 1,690 ft²Bigger

Smaller than almost all homes nearby

Lot size2,784 ft²
SmallerTypical 0.18 acBigger

Bigger than 8% of homes nearby

Year built1937
OlderTypical 1964Newer

Newer than 26% of homes nearby

How 617 Walnut St ranks against every home in each area.
MeasureThis homeOakhill BrewsterPetaluma 94952Sonoma County
Estimated valuepricier than$442,414almost no homesalmost no homes7% of homes
Price per ft²pricier than$77389% of homes81% of homes91% of homes
Living areabigger than572 ft²almost no homesalmost no homesalmost no homes
Lot sizebigger than2,784 ft²14% of homes8% of homes11% of homes
Year builtnewer than193730% of homes26% of homes8% of homes

About 617 Walnut St

How much is 617 Walnut St, Petaluma, CA worth?

The TopHap Estimate for 617 Walnut St, Petaluma, CA is $442,414 as of Oct 21, 2026. The likely range is $350,998 to $533,830. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 617 Walnut St, Petaluma, CA last sell?

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

How big is 617 Walnut St, Petaluma, CA?

617 Walnut St, Petaluma, CA has 1 bedrooms, 1 bathrooms, 572 square feet of living space and a 0.06-acre lot.

When was 617 Walnut St, Petaluma, CA built?

617 Walnut St, Petaluma, CA was built in 1937, making it 89 years old. It is a custom design home. The building has 1 story.

What schools serve 617 Walnut St, Petaluma, CA?

617 Walnut St, Petaluma, CA is assigned to Petaluma Junior High School (middle), rated B-; Petaluma High School (high), rated B; McKinley Elementary School (elementary), rated B. All sit in Petaluma City Elementary School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 617 Walnut St, Petaluma, CA compare to other homes in Petaluma 94952?

Among the 10,074 homes in Petaluma 94952, it is worth more than almost none of them ($442,414 against a typical $1,031,796), its price per square foot is higher than 81% of them ($773 against a typical $604), it is bigger than almost none of them (572 ft² against a typical 1,690 ft²), its lot is bigger than 8% of them (2,784 ft² against a typical 0.18 ac) and it is newer than 26% of them (1937 against a typical 1964). Measured against all of Sonoma County, it is worth more than 7% 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 617 Walnut St, Petaluma, CA?

The 2025 property tax bill for 617 Walnut St, Petaluma, CA was $514. The county assessed it at $24,958.

More homes on Walnut St

Closest homes

More homes in Petaluma 94952

Assigned schools

Explore the area

See this home in context

Open 617 Walnut St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map