Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$1,728,742$1,201 / 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 Sep 24, 2026
Last sold for $850,000 on Jun 21, 2007

3920 MARSHALL AVE

SAN MATEO, CA 94403
3
Beds
2
Baths
1,440 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.
0.13 ac
Lot SizeThe size of the land the home sits on, from county records.
1951
Year BuiltThe year the home was originally built, according to county records.
7
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$1.7M
$1.6M low$1.9M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$850,000 · Jun 21, 2007

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$15,056 (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.$1,161,580 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$580,790
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$580,790
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,138,804
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,786,500

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountySAN MATEO
Lot (acres)The size of the land the home sits on, from county records.0.13
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Central
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
Abbott Middle SchoolC
Middle · Grades 6–8 · 0.3 mi
E
Laurel Elementary SchoolD
Elementary · Grades KG–5 · 0.4 mi
H
Hillsdale High SchoolA-
High · Grades 9–12 · 0.5 mi

District: San Mateo-Foster City Elementary School District

Neighborhood · ZIP 94403These 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.104
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.85
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.516

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.34%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.9%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.43,216
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.7,529 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$160,514
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$196,016
Average tempThe average temperature here across a full year.58°F
Annual precipHow much rain and melted snow falls here in a typical year.21 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.66%

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

3920 Marshall Ave 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 82% of homes in San Mateo Knolls
  • Costs more per square foot than 71% of homes in San Mateo County
  • Smaller than 80% of homes in San Mateo Knolls
  • Has a smaller lot than 89% of homes in San Mateo Knolls
  • Older than 68% of homes in San Mateo County

What homes are worth in San Mateo 94403

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

This home
$557K$2.9M

This home is worth more than 50% of homes in San Mateo 94403.

How it measures up in San Mateo 94403

The dot is this home. The mark in the middle is the typical home in San Mateo 94403.

Estimated value$1,728,742
CheaperTypical $1,724,098Pricier

Pricier than 50% of homes nearby

Price per ft²$1201
CheaperTypical $1074Pricier

Pricier than 69% of homes nearby

Living area1,440 ft²
SmallerTypical 1,540 ft²Bigger

Bigger than 43% of homes nearby

Lot size0.13 ac
SmallerTypical 0.14 acBigger

Bigger than 35% of homes nearby

Year built1951
OlderTypical 1955Newer

Newer than 37% of homes nearby

How 3920 Marshall Ave ranks against every home in each area.
MeasureThis homeSan Mateo KnollsSan Mateo 94403San Mateo County
Estimated valuepricier than$1,728,74218% of homes50% of homes59% of homes
Price per ft²pricier than$120166% of homes69% of homes71% of homes
Living areabigger than1,440 ft²20% of homes43% of homes40% of homes
Lot sizebigger than0.13 ac11% of homes35% of homes38% of homes
Year builtnewer than195144% of homes37% of homes32% of homes

About 3920 Marshall Ave

How much is 3920 Marshall Ave, San Mateo, CA worth?

The TopHap Estimate for 3920 Marshall Ave, San Mateo, CA is $1,728,742 as of Sep 24, 2026. The likely range is $1,589,305 to $1,868,179. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3920 Marshall Ave, San Mateo, CA last sell?

3920 Marshall Ave, San Mateo, CA last sold on Jun 21, 2007 for $850,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 3920 Marshall Ave, San Mateo, CA?

3920 Marshall Ave, San Mateo, CA has 3 bedrooms, 2 bathrooms, 1,440 square feet of living space and a 0.13-acre lot.

When was 3920 Marshall Ave, San Mateo, CA built?

3920 Marshall Ave, San Mateo, CA was built in 1951, making it 75 years old.

What schools serve 3920 Marshall Ave, San Mateo, CA?

3920 Marshall Ave, San Mateo, CA is assigned to Abbott Middle School (middle), rated C; Laurel Elementary School (elementary), rated D; Hillsdale High School (high), rated A-. All sit in San Mateo-Foster City Elementary School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3920 Marshall Ave, San Mateo, CA compare to other homes in San Mateo 94403?

Among the 11,697 homes in San Mateo 94403, it is worth more than 50% of them ($1,728,742 against a typical $1,724,098), its price per square foot is higher than 69% of them ($1201 against a typical $1074), it is bigger than 43% of them (1,440 ft² against a typical 1,540 ft²), its lot is bigger than 35% of them (0.13 ac against a typical 0.14 ac) and it is newer than 37% of them (1951 against a typical 1955). Measured against all of San Mateo County, it is worth more than 59% 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 3920 Marshall Ave, San Mateo, CA?

The 2025 property tax bill for 3920 Marshall Ave, San Mateo, CA was $15,056. The county assessed it at $1,161,580.

More homes on Marshall Ave

Closest homes

More homes in San Mateo 94403

Assigned schools

Explore the area

See this home in context

Open 3920 Marshall Ave 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