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Duplex (2 Units, Any Combination)Residential
Last sold for $351,528 on Jan 22, 2009

1520 HELIX ST

SPRING VALLEY, CA 91977
3
Beds
2
Baths
2,080 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.
0.57 ac
Lot SizeThe size of the land the home sits on, from county records.
1944
Year BuiltThe year the home was originally built, according to county records.

Valuation

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$351,528 · Jan 22, 2009

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,871 (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.$210,638 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$124,774
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$85,864
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$206,509

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.28
1
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.
38
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
13
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.

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Duplex (2 Units, Any Combination)
StyleThe architectural style of the home, such as ranch or colonial.Duplex Single
CountySAN DIEGO
Lot (acres)The size of the land the home sits on, from county records.0.57
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.

Foreclosure Filings(1)

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

H
Mount Miguel High SchoolC-
High · Grades 9–12 · 0.5 mi
M
STEAM Academy at La PresaC+
Middle · Grades 6–8 · 0.6 mi
E
Bancroft Elementary SchoolD-
Elementary · Grades KG–5 · 0.7 mi

District: Grossmont Union High School District

Neighborhood · ZIP 91977These 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.66
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.105
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.198

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.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.19%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.9.1%
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.61,121
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.5,580 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$86,172
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$118,122
Average tempThe average temperature here across a full year.63°F
Annual precipHow much rain and melted snow falls here in a typical year.13 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

1520 Helix 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 88% of homes in La Presa
  • Has a bigger lot than 80% of homes in La Presa
  • Among the oldest homes in La Presa

How it measures up in Spring Valley 91977

The dot is this home. The mark in the middle is the typical home in Spring Valley 91977.

Living area2,080 ft²
SmallerTypical 1,472 ft²Bigger

Bigger than 83% of homes nearby

Lot size0.57 ac
SmallerTypical 0.23 acBigger

Bigger than 76% of homes nearby

Year built1944
OlderTypical 1975Newer

Newer than 2% of homes nearby

How 1520 Helix St ranks against every home in each area.
MeasureThis homeLa PresaSpring Valley 91977San Diego County
Living areabigger than2,080 ft²88% of homes83% of homes74% of homes
Lot sizebigger than0.57 ac80% of homes76% of homes64% of homes
Year builtnewer than1944almost no homes2% of homes3% of homes

About 1520 Helix St

When did 1520 Helix St, Spring Valley, CA last sell?

1520 Helix St, Spring Valley, CA last sold on Jan 22, 2009 for $351,528, according to the county's recorded deed. TopHap holds 5 recorded sales for this parcel.

How big is 1520 Helix St, Spring Valley, CA?

1520 Helix St, Spring Valley, CA has 3 bedrooms, 2 bathrooms, 2,080 square feet of living space and a 0.57-acre lot.

When was 1520 Helix St, Spring Valley, CA built?

1520 Helix St, Spring Valley, CA was built in 1944, making it 82 years old. It is a duplex single home.

What schools serve 1520 Helix St, Spring Valley, CA?

1520 Helix St, Spring Valley, CA is assigned to Mount Miguel High School (high), rated C-; STEAM Academy at La Presa (middle), rated C+; Bancroft Elementary School (elementary), rated D-. All sit in Grossmont Union High School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 1520 Helix St, Spring Valley, CA compare to other homes in Spring Valley 91977?

Among the 15,110 homes in Spring Valley 91977, it is bigger than 83% of them (2,080 ft² against a typical 1,472 ft²), its lot is bigger than 76% of them (0.57 ac against a typical 0.23 ac) and it is newer than 2% of them (1944 against a typical 1975). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 1520 Helix St, Spring Valley, CA?

The 2025 property tax bill for 1520 Helix St, Spring Valley, CA was $3,871. The county assessed it at $210,638.

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Assigned schools

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