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Quadplex (4 Units, Any Combination)Residential
Last sold for $1,040,000 on Aug 8, 2019

1521 OSOS ST

SAN LUIS OBISPO, CA 93401
4
Beds
4
Baths
2,712 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.
1911
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
12
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

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$1,040,000 · Aug 8, 2019

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$12,995 (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.$1,160,133 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$557,756
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$602,377
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,137,386

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.36
85
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
72
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
24
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.48 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.51%
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.1 percent flood zone

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Quadplex (4 Units, Any Combination)
StyleThe architectural style of the home, such as ranch or colonial.Quadraplex
CountySAN LUIS OBISPO
Lot (acres)The size of the land the home sits on, from county records.0.13
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
HeatingThe type of heating system in the home.Yes
CoolingThe type of cooling or air conditioning in the home.None
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(9)

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
Hawthorne Elementary SchoolB-
Elementary · Grades KG–6 · 0.5 mi
H
San Luis Obispo High SchoolA+
High · Grades 9–12 · 0.7 mi
M
Laguna Middle SchoolA
Middle · Grades 7–8 · 2.4 mi

District: San Luis Coastal Unified School District

Neighborhood · ZIP 93401These 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.123
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.93
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.320

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.93%
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.16%
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.30,428
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.461 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$90,611
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$117,227
Average tempThe average temperature here across a full year.58°F
Annual precipHow much rain and melted snow falls here in a typical year.24 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.75%

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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

1521 Osos St 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.

  • Bigger than 86% of homes in San Luis Obispo 93401
  • Has a smaller lot than 71% of homes in San Luis Obispo County
  • Among the oldest homes in San Luis Obispo County

How it measures up in San Luis Obispo 93401

The dot is this home. The mark in the middle is the typical home in San Luis Obispo 93401.

Living area2,712 ft²
SmallerTypical 1,640 ft²Bigger

Bigger than 86% of homes nearby

Lot size0.13 ac
SmallerTypical 0.14 acBigger

Bigger than 42% of homes nearby

Year built1911
OlderTypical 1986Newer

Newer than 4% of homes nearby

How 1521 Osos St ranks against every home in each area.
MeasureThis homeSan Luis Obispo 93401San Luis Obispo County
Living areabigger than2,712 ft²86% of homes86% of homes
Lot sizebigger than0.13 ac42% of homes29% of homes
Year builtnewer than19114% of homesalmost no homes

About 1521 Osos St

When did 1521 Osos St, San Luis Obispo, CA last sell?

1521 Osos St, San Luis Obispo, CA last sold on Aug 8, 2019 for $1,040,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 1521 Osos St, San Luis Obispo, CA?

1521 Osos St, San Luis Obispo, CA has 4 bedrooms, 4 bathrooms, 2,712 square feet of living space and a 0.13-acre lot.

When was 1521 Osos St, San Luis Obispo, CA built?

1521 Osos St, San Luis Obispo, CA was built in 1911, making it 115 years old. It is a quadraplex home. The building has 2 stories.

What schools serve 1521 Osos St, San Luis Obispo, CA?

1521 Osos St, San Luis Obispo, CA is assigned to Hawthorne Elementary School (elementary), rated B-; San Luis Obispo High School (high), rated A+; Laguna Middle School (middle), rated A. All sit in San Luis Coastal Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 1521 Osos St, San Luis Obispo, CA compare to other homes in San Luis Obispo 93401?

Among the 10,957 homes in San Luis Obispo 93401, it is bigger than 86% of them (2,712 ft² against a typical 1,640 ft²), its lot is bigger than 42% of them (0.13 ac against a typical 0.14 ac) and it is newer than 4% of them (1911 against a typical 1986). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 1521 Osos St, San Luis Obispo, CA?

The 2025 property tax bill for 1521 Osos St, San Luis Obispo, CA was $12,995. The county assessed it at $1,160,133.

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