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Single Family ResidenceResidential
$1,151,454$935 / 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

21 ROCKLYN CT

CORTE MADERA, CA 94925
3
Beds
2
Baths
1,232 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.
0.14 ac
Lot SizeThe size of the land the home sits on, from county records.
1953
Year BuiltThe year the home was originally built, according to county records.
6
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

$1.2M
$1.1M low$1.2M high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,617 (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.$147,098 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$44,129
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$102,969
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$144,214

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
CountyMARIN
Lot (acres)The size of the land the home sits on, from county records.0.14
HeatingThe type of heating system in the home.Central
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(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
Neil Cummins Elementary SchoolA+
Elementary · Grades KG–5 · 0.4 mi
H
Redwood High SchoolA+
High · Grades 9–12 · 0.9 mi
M
Hall Middle SchoolA
Middle · Grades 6–8 · 1.0 mi

District: Larkspur Elementary School District

Neighborhood · ZIP 94925These 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.64
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 100.396

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.37%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.3%
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.11,184
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,645 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$194,818
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$250,480
Average tempThe average temperature here across a full year.58°F
Annual precipHow much rain and melted snow falls here in a typical year.34 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.78%

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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

21 Rocklyn Ct 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 92% of homes in Chapman Park
  • Costs less per square foot than 70% of homes in Chapman Park
  • Smaller than 87% of homes in Corte Madera 94925
  • Has a smaller lot than 72% of homes in Chapman Park
  • Older than 72% of homes in Marin County

What homes are worth in Corte Madera 94925

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

This home
$670K$4.1M

This home is worth more than 18% of homes in Corte Madera 94925.

How it measures up in Corte Madera 94925

The dot is this home. The mark in the middle is the typical home in Corte Madera 94925.

Estimated value$1,151,454
CheaperTypical $1,669,652Pricier

Pricier than 18% of homes nearby

Price per ft²$935
CheaperTypical $953Pricier

Pricier than 46% of homes nearby

Living area1,232 ft²
SmallerTypical 1,658 ft²Bigger

Bigger than 13% of homes nearby

Lot size0.14 ac
SmallerTypical 0.16 acBigger

Bigger than 39% of homes nearby

Year built1953
OlderTypical 1959Newer

Newer than 29% of homes nearby

How 21 Rocklyn Ct ranks against every home in each area.
MeasureThis homeChapman ParkCorte Madera 94925Marin County
Estimated valuepricier than$1,151,4548% of homes18% of homes36% of homes
Price per ft²pricier than$93530% of homes46% of homes68% of homes
Living areabigger than1,232 ft²16% of homes13% of homes17% of homes
Lot sizebigger than0.14 ac28% of homes39% of homes31% of homes
Year builtnewer than195361% of homes29% of homes28% of homes

About 21 Rocklyn Ct

How much is 21 Rocklyn Ct, Corte Madera, CA worth?

The TopHap Estimate for 21 Rocklyn Ct, Corte Madera, CA is $1,151,454 as of Aug 30, 2026. The likely range is $1,059,134 to $1,243,774. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Rocklyn Ct, Corte Madera, CA last sell?

21 Rocklyn Ct, Corte Madera, CA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 21 Rocklyn Ct, Corte Madera, CA?

21 Rocklyn Ct, Corte Madera, CA has 3 bedrooms, 2 bathrooms, 1,232 square feet of living space and a 0.14-acre lot.

When was 21 Rocklyn Ct, Corte Madera, CA built?

21 Rocklyn Ct, Corte Madera, CA was built in 1953, making it 73 years old. It is a contemporary home.

What schools serve 21 Rocklyn Ct, Corte Madera, CA?

21 Rocklyn Ct, Corte Madera, CA is assigned to Neil Cummins Elementary School (elementary), rated A+; Redwood High School (high), rated A+; Hall Middle School (middle), rated A. All sit in Larkspur Elementary School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Rocklyn Ct, Corte Madera, CA compare to other homes in Corte Madera 94925?

Among the 3,268 homes in Corte Madera 94925, it is worth more than 18% of them ($1,151,454 against a typical $1,669,652), its price per square foot is higher than 46% of them ($935 against a typical $953), it is bigger than 13% of them (1,232 ft² against a typical 1,658 ft²), its lot is bigger than 39% of them (0.14 ac against a typical 0.16 ac) and it is newer than 29% of them (1953 against a typical 1959). Measured against all of Marin County, it is worth more than 36% 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 21 Rocklyn Ct, Corte Madera, CA?

The 2025 property tax bill for 21 Rocklyn Ct, Corte Madera, CA was $4,617. The county assessed it at $147,098.

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