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Single Family ResidenceResidential
$624,255$649 / 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 93How 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 $445,000 on Sep 14, 2018

1620 GAMMA ST

NATIONAL CITY, CA 91950
3
Beds
1
Baths
962 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.
0.19 ac
Lot SizeThe size of the land the home sits on, from county records.
1952
Year BuiltThe year the home was originally built, according to county records.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$624K
$579K low$670K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$445,000 · Sep 14, 2018

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,497 (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.$506,329 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$341,347
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$164,982
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$496,402

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.39
65
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
1
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
35
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
9
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
87
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.32 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%

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.0.19
GarageWhether the property has a garage, and details like whether it is attached to the home.Carport (Unspecified)
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(1)

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
El Toyon Elementary SchoolC-
Elementary · Grades PK–6 · 0.3 mi
M
Granger Junior High SchoolC
Middle · Grades 7–9 · 1.7 mi
H
Sweetwater Union High SchoolC-
High · Grades 9–12 · 2.1 mi

District: Sweetwater Union High School District (9-12)

Neighborhood · ZIP 91950These 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.101
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.108
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.278

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.14%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.12%
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.57,278
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.6,998 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$56,308
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$76,018
Average tempThe average temperature here across a full year.62°F
Annual precipHow much rain and melted snow falls here in a typical year.10 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

1620 Gamma 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.

  • Worth less than 82% of homes in San Diego County
  • Costs more per square foot than 85% of homes in National City 91950
  • Smaller than 82% of homes in San Diego County
  • Older than 93% of homes in San Diego County

What homes are worth in National City 91950

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

This home
$254K$930K

This home is worth more than 45% of homes in National City 91950.

How it measures up in National City 91950

The dot is this home. The mark in the middle is the typical home in National City 91950.

Estimated value$624,255
CheaperTypical $641,414Pricier

Pricier than 45% of homes nearby

Price per ft²$649
CheaperTypical $505Pricier

Pricier than 85% of homes nearby

Living area962 ft²
SmallerTypical 1,318 ft²Bigger

Bigger than 20% of homes nearby

Lot size0.19 ac
SmallerTypical 0.18 acBigger

Bigger than 53% of homes nearby

Year built1952
OlderTypical 1960Newer

Newer than 33% of homes nearby

How 1620 Gamma St ranks against every home in each area.
MeasureThis homeNational City 91950San Diego County
Estimated valuepricier than$624,25545% of homes18% of homes
Price per ft²pricier than$64985% of homes66% of homes
Living areabigger than962 ft²20% of homes18% of homes
Lot sizebigger than0.19 ac53% of homes41% of homes
Year builtnewer than195233% of homes7% of homes

About 1620 Gamma St

How much is 1620 Gamma St, National City, CA worth?

The TopHap Estimate for 1620 Gamma St, National City, CA is $624,255 as of Sep 24, 2026. The likely range is $578,867 to $669,643. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 1620 Gamma St, National City, CA last sell?

1620 Gamma St, National City, CA last sold on Sep 14, 2018 for $445,000, according to the county's recorded deed.

How big is 1620 Gamma St, National City, CA?

1620 Gamma St, National City, CA has 3 bedrooms, 1 bathrooms, 962 square feet of living space and a 0.19-acre lot.

When was 1620 Gamma St, National City, CA built?

1620 Gamma St, National City, CA was built in 1952, making it 74 years old.

What schools serve 1620 Gamma St, National City, CA?

1620 Gamma St, National City, CA is assigned to El Toyon Elementary School (elementary), rated C-; Granger Junior High School (middle), rated C; Sweetwater Union High School (high), rated C-. All sit in Sweetwater Union High School District (9-12). Attendance boundaries change — confirm with the district before relying on an assignment.

How does 1620 Gamma St, National City, CA compare to other homes in National City 91950?

Among the 9,012 homes in National City 91950, it is worth more than 45% of them ($624,255 against a typical $641,414), its price per square foot is higher than 85% of them ($649 against a typical $505), it is bigger than 20% of them (962 ft² against a typical 1,318 ft²), its lot is bigger than 53% of them (0.19 ac against a typical 0.18 ac) and it is newer than 33% of them (1952 against a typical 1960). Measured against all of San Diego County, it is worth more than 18% 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 1620 Gamma St, National City, CA?

The 2025 property tax bill for 1620 Gamma St, National City, CA was $6,497. The county assessed it at $506,329.

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Assigned schools

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