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Single Family ResidenceResidential
$3,819,455$667 / 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 Sep 24, 2026
Last sold for $2,515,000 on Mar 8, 2012

623 BISCAYNE DR

SAN RAFAEL, CA 94901
4
Beds
4.5
Baths
5,726 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.
0.5 ac
Lot SizeThe size of the land the home sits on, from county records.
1989
Year BuiltThe year the home was originally built, according to county records.
3
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$3.8M
$3.7M low$3.9M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$2,515,000 · Mar 8, 2012

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$40,505 (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.$3,132,963 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$1,281,100
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$1,851,863
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$3,071,555

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
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.1995
Lot (acres)The size of the land the home sits on, from county records.0.50
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.Yes
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 2,443 ft²Patio · 2,443 ft²

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.

E
Glenwood Elementary SchoolA
Elementary · Grades KG–5 · 1.0 mi
H
San Rafael High SchoolC
High · Grades 9–12 · 2.9 mi
M
James B. Davidson Middle SchoolC+
Middle · Grades 6–8 · 3.7 mi

District: San Rafael City High School District

Neighborhood · ZIP 94901These 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.97
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 100.371

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.28%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.9.6%
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.44,567
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,697 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$121,153
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$168,715
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

623 Biscayne 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.

  • Among the most valuable homes in San Rafael 94901
  • Costs less per square foot than 69% of homes in Peacock Gap
  • Among the largest homes in Peacock Gap
  • Has a bigger lot than 88% of homes in San Rafael 94901
  • Newer than 92% of homes in Peacock Gap

What homes are worth in San Rafael 94901

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

This home
$371K$3.6M

This home is worth more than almost all homes in San Rafael 94901.

How it measures up in San Rafael 94901

The dot is this home. The mark in the middle is the typical home in San Rafael 94901.

Estimated value$3,819,455
CheaperTypical $1,336,545Pricier

Pricier than almost all homes nearby

Price per ft²$667
CheaperTypical $695Pricier

Pricier than 43% of homes nearby

Living area5,726 ft²
SmallerTypical 1,953 ft²Bigger

Bigger than 98% of homes nearby

Lot size0.5 ac
SmallerTypical 0.17 acBigger

Bigger than 88% of homes nearby

Year built1989
OlderTypical 1961Newer

Newer than 92% of homes nearby

How 623 Biscayne Dr ranks against every home in each area.
MeasureThis homePeacock GapSan Rafael 94901Marin County
Estimated valuepricier than$3,819,45597% of homesalmost all homes93% of homes
Price per ft²pricier than$66731% of homes43% of homes35% of homes
Living areabigger than5,726 ft²almost all homes98% of homesalmost all homes
Lot sizebigger than0.5 ac87% of homes88% of homes86% of homes
Year builtnewer than198992% of homes92% of homes87% of homes

About 623 Biscayne Dr

How much is 623 Biscayne Dr, San Rafael, CA worth?

The TopHap Estimate for 623 Biscayne Dr, San Rafael, CA is $3,819,455 as of Sep 24, 2026. The likely range is $3,731,224 to $3,907,686. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 623 Biscayne Dr, San Rafael, CA last sell?

623 Biscayne Dr, San Rafael, CA last sold on Mar 8, 2012 for $2,515,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 623 Biscayne Dr, San Rafael, CA?

623 Biscayne Dr, San Rafael, CA has 4 bedrooms, 4.5 bathrooms, 5,726 square feet of living space and a 0.50-acre lot.

When was 623 Biscayne Dr, San Rafael, CA built?

623 Biscayne Dr, San Rafael, CA was built in 1989, making it 37 years old. It is a contemporary home.

What schools serve 623 Biscayne Dr, San Rafael, CA?

623 Biscayne Dr, San Rafael, CA is assigned to Glenwood Elementary School (elementary), rated A; San Rafael High School (high), rated C; James B. Davidson Middle School (middle), rated C+. All sit in San Rafael City High School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 623 Biscayne Dr, San Rafael, CA compare to other homes in San Rafael 94901?

Among the 10,067 homes in San Rafael 94901, it is worth more than almost all of them ($3,819,455 against a typical $1,336,545), its price per square foot is higher than 43% of them ($667 against a typical $695), it is bigger than 98% of them (5,726 ft² against a typical 1,953 ft²), its lot is bigger than 88% of them (0.5 ac against a typical 0.17 ac) and it is newer than 92% of them (1989 against a typical 1961). Measured against all of Marin County, it is worth more than 93% 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 623 Biscayne Dr, San Rafael, CA?

The 2025 property tax bill for 623 Biscayne Dr, San Rafael, CA was $40,505. The county assessed it at $3,132,963.

More homes on Biscayne Dr

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