Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$525,827$466 / 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 92How 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
Last sold for $410,000 on Jul 29, 2015

8176 KNOLL DR

FORESTVILLE, CA 95436
3
Beds
2
Baths
1,128 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.
3,500 ft²
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.
4
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$526K
$486K low$566K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$410,000 · Jul 29, 2015

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,960 (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.$495,057 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$193,192
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$301,865
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$485,351

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.40
99
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
75
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
27
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.197 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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.0.2 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
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.2014
Lot (acres)The size of the land the home sits on, from county records.0.08
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.None
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(7)

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
Forestville AcademyC-
Middle · Grades 2–8 · 1.3 mi
E
Forestville Elementary School
Elementary · Grades KG–1 · 1.3 mi
H
Analy High SchoolA-
High · Grades 9–12 · 6.8 mi

District: West Sonoma County Union High School District

Neighborhood · ZIP 95436These 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.152
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.82
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.340

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.84%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.24%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.7%
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.5,386
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.227 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$95,296
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$118,013
Average tempThe average temperature here across a full year.57°F
Annual precipHow much rain and melted snow falls here in a typical year.46 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

8176 Knoll 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 87% of homes in Sonoma County
  • Smaller than 81% of homes in Sonoma County
  • Has a smaller lot than 96% of homes in Forestville
  • Older than 88% of homes in Sonoma County

What homes are worth in Forestville 95436

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

This home
$240K$1.6M

This home is worth more than 43% of homes in Forestville 95436.

How it measures up in Forestville 95436

The dot is this home. The mark in the middle is the typical home in Forestville 95436.

Estimated value$525,827
CheaperTypical $568,371Pricier

Pricier than 43% of homes nearby

Price per ft²$466
CheaperTypical $485Pricier

Pricier than 44% of homes nearby

Living area1,128 ft²
SmallerTypical 1,214 ft²Bigger

Bigger than 45% of homes nearby

Lot size3,500 ft²
SmallerTypical 0.25 acBigger

Bigger than 5% of homes nearby

Year built1948
OlderTypical 1958Newer

Newer than 31% of homes nearby

How 8176 Knoll Dr ranks against every home in each area.
MeasureThis homeForestvilleForestville 95436Sonoma County
Estimated valuepricier than$525,82732% of homes43% of homes13% of homes
Price per ft²pricier than$46642% of homes44% of homes42% of homes
Living areabigger than1,128 ft²37% of homes45% of homes19% of homes
Lot sizebigger than3,500 ft²4% of homes5% of homes14% of homes
Year builtnewer than194820% of homes31% of homes12% of homes

About 8176 Knoll Dr

How much is 8176 Knoll Dr, Forestville, CA worth?

The TopHap Estimate for 8176 Knoll Dr, Forestville, CA is $525,827 as of Aug 30, 2026. The likely range is $485,526 to $566,128. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 8176 Knoll Dr, Forestville, CA last sell?

8176 Knoll Dr, Forestville, CA last sold on Jul 29, 2015 for $410,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 8176 Knoll Dr, Forestville, CA?

8176 Knoll Dr, Forestville, CA has 3 bedrooms, 2 bathrooms, 1,128 square feet of living space and a 0.08-acre lot.

When was 8176 Knoll Dr, Forestville, CA built?

8176 Knoll Dr, Forestville, CA was built in 1948, making it 78 years old. The building has 1 story.

What schools serve 8176 Knoll Dr, Forestville, CA?

8176 Knoll Dr, Forestville, CA is assigned to Forestville Academy (middle), rated C-; Forestville Elementary School (elementary); Analy High School (high), rated A-. All sit in West Sonoma County Union High School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 8176 Knoll Dr, Forestville, CA compare to other homes in Forestville 95436?

Among the 2,369 homes in Forestville 95436, it is worth more than 43% of them ($525,827 against a typical $568,371), its price per square foot is higher than 44% of them ($466 against a typical $485), it is bigger than 45% of them (1,128 ft² against a typical 1,214 ft²), its lot is bigger than 5% of them (3,500 ft² against a typical 0.25 ac) and it is newer than 31% of them (1948 against a typical 1958). Measured against all of Sonoma County, it is worth more than 13% 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 8176 Knoll Dr, Forestville, CA?

The 2025 property tax bill for 8176 Knoll Dr, Forestville, CA was $8,960. The county assessed it at $495,057.

More homes on Knoll Dr

Closest homes

More homes in Forestville 95436

Assigned schools

Explore the area

See this home in context

Open 8176 Knoll Dr 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