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Single Family ResidenceResidential
$3,484,875$1,515 / 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 Oct 21, 2026
Last sold for $1,300,000 on Jul 31, 1998

51 POSSUM LN

PORTOLA VALLEY, CA 94028
250
Beds
2.5
Baths
2,300 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.
1.27 ac
Lot SizeThe size of the land the home sits on, from county records.
1979
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
553
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$3.5M
$3.4M low$3.6M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$1,300,000 · Jul 31, 1998

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$22,089 (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.$2,078,782 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$1,039,391
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$1,039,391
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$2,038,022
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$3,771,630

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.33 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.6%
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.Contemporary
CountySAN MATEO
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Wood Shingle
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Central
FireplaceWhether the home has a fireplace, and what kind.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Basement
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(4)

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
Ormondale SchoolA+
Elementary · Grades KG–3 · 0.5 mi
M
Corte Madera SchoolA+
Middle · Grades 4–8 · 1.3 mi
H
Woodside High SchoolB+
High · Grades 9–12 · 4.3 mi

District: Portola Valley Elementary School District

Neighborhood · ZIP 94028These 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.75
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.83
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.708

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.91%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.32%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.3%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.6,086
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.365 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$234,946
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$375,942
Average tempThe average temperature here across a full year.58°F
Annual precipHow much rain and melted snow falls here in a typical year.33 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.67%

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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

51 Possum Ln 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 89% of homes in San Mateo County
  • Costs more per square foot than 87% of homes in San Mateo County
  • Bigger than 77% of homes in San Mateo County
  • Has a bigger lot than 89% of homes in San Mateo County
  • Newer than 81% of homes in San Mateo County

What homes are worth in Portola Valley 94028

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

This home
$1.6M$10M

This home is worth more than 40% of homes in Portola Valley 94028.

How it measures up in Portola Valley 94028

The dot is this home. The mark in the middle is the typical home in Portola Valley 94028.

Estimated value$3,484,875
CheaperTypical $3,808,471Pricier

Pricier than 40% of homes nearby

Price per ft²$1515
CheaperTypical $1454Pricier

Pricier than 59% of homes nearby

Living area2,300 ft²
SmallerTypical 2,720 ft²Bigger

Bigger than 31% of homes nearby

Lot size1.27 ac
SmallerTypical 0.77 acBigger

Bigger than 74% of homes nearby

Year built1979
OlderTypical 1964Newer

Newer than 75% of homes nearby

How 51 Possum Ln ranks against every home in each area.
MeasureThis homePortola Valley 94028San Mateo County
Estimated valuepricier than$3,484,87540% of homes89% of homes
Price per ft²pricier than$151559% of homes87% of homes
Living areabigger than2,300 ft²31% of homes77% of homes
Lot sizebigger than1.27 ac74% of homes89% of homes
Year builtnewer than197975% of homes81% of homes

About 51 Possum Ln

How much is 51 Possum Ln, Portola Valley, CA worth?

The TopHap Estimate for 51 Possum Ln, Portola Valley, CA is $3,484,875 as of Oct 21, 2026. The likely range is $3,359,219 to $3,610,530. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 51 Possum Ln, Portola Valley, CA last sell?

51 Possum Ln, Portola Valley, CA last sold on Jul 31, 1998 for $1,300,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 51 Possum Ln, Portola Valley, CA?

51 Possum Ln, Portola Valley, CA has 250 bedrooms, 2.5 bathrooms and 2,300 square feet of living space.

When was 51 Possum Ln, Portola Valley, CA built?

51 Possum Ln, Portola Valley, CA was built in 1979, making it 47 years old. It is a contemporary home. The building has 1 story.

What schools serve 51 Possum Ln, Portola Valley, CA?

51 Possum Ln, Portola Valley, CA is assigned to Ormondale School (elementary), rated A+; Corte Madera School (middle), rated A+; Woodside High School (high), rated B+. All sit in Portola Valley Elementary School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 51 Possum Ln, Portola Valley, CA compare to other homes in Portola Valley 94028?

Among the 2,380 homes in Portola Valley 94028, it is worth more than 40% of them ($3,484,875 against a typical $3,808,471), its price per square foot is higher than 59% of them ($1515 against a typical $1454), it is bigger than 31% of them (2,300 ft² against a typical 2,720 ft²), its lot is bigger than 74% of them (1.27 ac against a typical 0.77 ac) and it is newer than 75% of them (1979 against a typical 1964). Measured against all of San Mateo County, it is worth more than 89% 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 51 Possum Ln, Portola Valley, CA?

The 2025 property tax bill for 51 Possum Ln, Portola Valley, CA was $22,089. The county assessed it at $2,078,782.

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