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CondominiumResidential
$811,942$728 / 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 98How 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 $229,000 on Mar 26, 1999

3821 RADBURN DR

S SAN FRAN, CA 94080
3
Beds
1.5
Baths
1,115 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.
1.24 ac
Lot SizeThe size of the land the home sits on, from county records.
1971
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
5
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

$812K
$799K low$825K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$229,000 · Mar 26, 1999

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,792 (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.$366,160 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$109,842
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$256,318
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$358,982
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$632,880

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Condominium
StyleThe architectural style of the home, such as ranch or colonial.Condo/Apartment
CountySAN MATEO
HeatingThe type of heating system in the home.Central
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(5)

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
Westborough Middle SchoolB
Middle · Grades 6–8 · 0.4 mi
E
Skyline Elementary SchoolA-
Elementary · Grades KG–5 · 0.5 mi
H
South San Francisco High SchoolA-
High · Grades 9–12 · 1.6 mi

District: South San Francisco Unified School District

Neighborhood · ZIP 94080These 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.84
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 100.615

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.26%
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.1.2%
PopulationHow many people live in this area.63,420
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.6,066 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$118,416
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$160,648
Average tempThe average temperature here across a full year.57°F
Annual precipHow much rain and melted snow falls here in a typical year.23 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.66%

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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

3821 Radburn 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 91% of homes in San Mateo County
  • Costs less per square foot than 79% of homes in San Mateo County
  • Smaller than 82% of homes in San Mateo County
  • Has a bigger lot than 93% of homes in South San Francisco 94080
  • Newer than 70% of homes in South San Francisco 94080

What homes are worth in South San Francisco 94080

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

This home
$564K$1.7M

This home is worth more than 13% of homes in South San Francisco 94080.

How it measures up in South San Francisco 94080

The dot is this home. The mark in the middle is the typical home in South San Francisco 94080.

Estimated value$811,942
CheaperTypical $1,123,313Pricier

Pricier than 13% of homes nearby

Price per ft²$728
CheaperTypical $763Pricier

Pricier than 42% of homes nearby

Living area1,115 ft²
SmallerTypical 1,454 ft²Bigger

Bigger than 29% of homes nearby

Lot size1.24 ac
SmallerTypical 0.11 acBigger

Bigger than 93% of homes nearby

Year built1971
OlderTypical 1956Newer

Newer than 70% of homes nearby

How 3821 Radburn Dr ranks against every home in each area.
MeasureThis homeWestboroughSouth San Francisco 94080San Mateo County
Estimated valuepricier than$811,94226% of homes13% of homes9% of homes
Price per ft²pricier than$72873% of homes42% of homes21% of homes
Living areabigger than1,115 ft²27% of homes29% of homes18% of homes
Lot sizebigger than1.24 ac82% of homes93% of homes90% of homes
Year builtnewer than197148% of homes70% of homes69% of homes

About 3821 Radburn Dr

How much is 3821 Radburn Dr, S San Fran, CA worth?

The TopHap Estimate for 3821 Radburn Dr, S San Fran, CA is $811,942 as of Aug 30, 2026. The likely range is $799,057 to $824,827. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3821 Radburn Dr, S San Fran, CA last sell?

3821 Radburn Dr, S San Fran, CA last sold on Mar 26, 1999 for $229,000, according to the county's recorded deed.

How big is 3821 Radburn Dr, S San Fran, CA?

3821 Radburn Dr, S San Fran, CA has 3 bedrooms, 1.5 bathrooms and 1,115 square feet of living space.

When was 3821 Radburn Dr, S San Fran, CA built?

3821 Radburn Dr, S San Fran, CA was built in 1971, making it 55 years old. It is a condo/apartment home. The building has 2 stories.

What schools serve 3821 Radburn Dr, S San Fran, CA?

3821 Radburn Dr, S San Fran, CA is assigned to Westborough Middle School (middle), rated B; Skyline Elementary School (elementary), rated A-; South San Francisco High School (high), rated A-. All sit in South San Francisco Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3821 Radburn Dr, S San Fran, CA compare to other homes in South San Francisco 94080?

Among the 16,730 homes in South San Francisco 94080, it is worth more than 13% of them ($811,942 against a typical $1,123,313), its price per square foot is higher than 42% of them ($728 against a typical $763), it is bigger than 29% of them (1,115 ft² against a typical 1,454 ft²), its lot is bigger than 93% of them (1.24 ac against a typical 0.11 ac) and it is newer than 70% of them (1971 against a typical 1956). Measured against all of San Mateo County, it is worth more than 9% 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 3821 Radburn Dr, S San Fran, CA?

The 2025 property tax bill for 3821 Radburn Dr, S San Fran, CA was $4,792. The county assessed it at $366,160.

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