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Single Family ResidenceResidential
$978,203$380 / 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 89How 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 $295,000 on Aug 16, 2000

4879 PORTSMOUTH BAY CT

OCEANSIDE, CA 92057
4
Beds
2
Baths
2,576 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.
0.31 ac
Lot SizeThe size of the land the home sits on, from county records.
1996
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

$978K
$871K low$1.1M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$295,000 · Aug 16, 2000

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,060 (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.$453,388 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$153,686
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$299,702
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$444,499

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.45
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
90
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
32
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
15
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
89
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountySAN DIEGO
Lot (acres)The size of the land the home sits on, from county records.0.31
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
Libby Elementary SchoolA-
Elementary · Grades KG–5 · 0.3 mi
H
El Camino High SchoolB+
High · Grades 9–12 · 2.7 mi
M
King Middle SchoolC+
Middle · Grades 6–8 · 2.9 mi

District: Oceanside Unified School District

Neighborhood · ZIP 92057These 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.67
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.97
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.216

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.21%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.4%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.55,095
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,704 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$100,851
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$121,948
Average tempThe average temperature here across a full year.62°F
Annual precipHow much rain and melted snow falls here in a typical year.14 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.68%

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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

4879 Portsmouth Bay 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 more than 80% of homes in North Valley
  • Costs less per square foot than 92% of homes in San Diego County
  • Bigger than 87% of homes in Oceanside 92057
  • Has a bigger lot than 70% of homes in North Valley
  • Newer than 74% of homes in Oceanside 92057

What homes are worth in Oceanside 92057

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

This home
$343K$1.4M

This home is worth more than 75% of homes in Oceanside 92057.

How it measures up in Oceanside 92057

The dot is this home. The mark in the middle is the typical home in Oceanside 92057.

Estimated value$978,203
CheaperTypical $775,535Pricier

Pricier than 75% of homes nearby

Price per ft²$380
CheaperTypical $481Pricier

Pricier than 15% of homes nearby

Living area2,576 ft²
SmallerTypical 1,498 ft²Bigger

Bigger than 87% of homes nearby

Lot size0.31 ac
SmallerTypical 0.26 acBigger

Bigger than 55% of homes nearby

Year built1996
OlderTypical 1988Newer

Newer than 74% of homes nearby

How 4879 Portsmouth Bay Ct ranks against every home in each area.
MeasureThis homeNorth ValleyOceanside 92057San Diego County
Estimated valuepricier than$978,20380% of homes75% of homes59% of homes
Price per ft²pricier than$38013% of homes15% of homes8% of homes
Living areabigger than2,576 ft²86% of homes87% of homes85% of homes
Lot sizebigger than0.31 ac70% of homes55% of homes55% of homes
Year builtnewer than199670% of homes74% of homes70% of homes

About 4879 Portsmouth Bay Ct

How much is 4879 Portsmouth Bay Ct, Oceanside, CA worth?

The TopHap Estimate for 4879 Portsmouth Bay Ct, Oceanside, CA is $978,203 as of Aug 30, 2026. The likely range is $870,603 to $1,085,803. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4879 Portsmouth Bay Ct, Oceanside, CA last sell?

4879 Portsmouth Bay Ct, Oceanside, CA last sold on Aug 16, 2000 for $295,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 4879 Portsmouth Bay Ct, Oceanside, CA?

4879 Portsmouth Bay Ct, Oceanside, CA has 4 bedrooms, 2 bathrooms, 2,576 square feet of living space and a 0.31-acre lot.

When was 4879 Portsmouth Bay Ct, Oceanside, CA built?

4879 Portsmouth Bay Ct, Oceanside, CA was built in 1996, making it 30 years old.

What schools serve 4879 Portsmouth Bay Ct, Oceanside, CA?

4879 Portsmouth Bay Ct, Oceanside, CA is assigned to Libby Elementary School (elementary), rated A-; El Camino High School (high), rated B+; King Middle School (middle), rated C+. All sit in Oceanside Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 4879 Portsmouth Bay Ct, Oceanside, CA compare to other homes in Oceanside 92057?

Among the 18,275 homes in Oceanside 92057, it is worth more than 75% of them ($978,203 against a typical $775,535), its price per square foot is higher than 15% of them ($380 against a typical $481), it is bigger than 87% of them (2,576 ft² against a typical 1,498 ft²), its lot is bigger than 55% of them (0.31 ac against a typical 0.26 ac) and it is newer than 74% of them (1996 against a typical 1988). Measured against all of San Diego 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 4879 Portsmouth Bay Ct, Oceanside, CA?

The 2025 property tax bill for 4879 Portsmouth Bay Ct, Oceanside, CA was $5,060. The county assessed it at $453,388.

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