Los Angeles County, CA vs Riverside County, CA vs San Diego County, CA: 30-year risk costs on a $500,000.00 home at 3.5% discount rate
San Diego County, CA has the lowest modeled 30-year risk cost NPV: $22,061.61. The margin to the next option is $19,060.83. Los Angeles County, CA: $41,122.44; Riverside County, CA: $44,256.02; San Diego County, CA: $22,061.61. This is a county model comparison, not a property-specific loss forecast.
Compare the same property assumptions
Each county uses $500,000.00 property value, 30 ownership years and 3.5% discount rate. The API echoes those inputs in every option. ZIP mappings: 90012 selects Los Angeles County, CA (FIPS 06037); 92501 selects Riverside County, CA (FIPS 06065); 92101 selects San Diego County, CA (FIPS 06073). The calculation table retains the annual risk-cost estimate and discounted total for each alternative, with the decision row and margin.
What the comparison can tell you
Dollar figures are RiskBeforeBuy modeled risk costs, not FEMA property valuations, insurance quotes, guaranteed losses or a recommendation to buy. The ranking compares the NPV model only; separate risk-intelligence grades and monthly estimates use a different model and are not mixed into it. The API names FEMA National Risk Index v1.20 and supporting sources but supplies no source collection/update date, calculation sample size or uncertainty interval. Request time is not source vintage. A numerical difference does not establish statistical significance. The results omit purchase price, financing, ordinary maintenance and any insurance quote specific to the home. A lower modeled risk cost is one part of a location decision.
Change the scenario
Open ZIP 90012 in Los Angeles County, CA
Open ZIP 92501 in Riverside County, CA
Open ZIP 92101 in San Diego County, CA
Each calculator link carries the ZIP and every shared input. The deployed lookup reads the ZIP automatically; property value, years and discount rate are not automatically applied. Full NPV controls and results require a paid account. Set property value to $500,000.00, years to 30, and the field labeled Mortgage Rate to 3.5%; that field supplies the calculator's discount rate. The API source link preserves the exact comparison inputs; full results require your own product key.
More property risk comparisons and RiskBeforeBuy provide the next steps. Inspect the native comparison API.
Calculation provenance
Los Angeles County, CA: FEMA National Risk Index v1.20; FEMA NFIP Claims Database; FEMA National Flood Hazard Layer; FEMA Disaster Declarations; FBI Uniform Crime Report; Source dates unavailable; NRI version v1.20; sample size UNAVAILABLE. Riverside County, CA: FEMA National Risk Index v1.20; FEMA NFIP Claims Database; FEMA National Flood Hazard Layer; FEMA Disaster Declarations; FBI Uniform Crime Report; Source dates unavailable; NRI version v1.20; sample size UNAVAILABLE. San Diego County, CA: FEMA National Risk Index v1.20; FEMA NFIP Claims Database; FEMA National Flood Hazard Layer; FEMA Disaster Declarations; FBI Uniform Crime Report; Source dates unavailable; NRI version v1.20; sample size UNAVAILABLE. Request timestamps and response hashes are shown separately in the calculation record.
Calculation data
San Diego County, CA has the lowest modeled 30-year risk cost NPV: $22,061.61. The margin to the next option is $19,060.83. Los Angeles County, CA: $41,122.44; Riverside County, CA: $44,256.02; San Diego County, CA: $22,061.61. This is a county model comparison, not a property-specific loss forecast.
| Input | Value |
|---|---|
| property_value | 500000 |
| years | 30 |
| discount_rate | 0.035 |
| Measure | Los Angeles County, CA | Riverside County, CA | San Diego County, CA |
|---|---|---|---|
| Modeled annual risk cost (USD) | 2,235.88 | 2,406.26 | 1,199.52 |
| Modeled 30-year risk cost NPV (USD) | 41,122.44 | 44,256.02 | 22,061.61 |
| Distance from winning value (USD) | 19,060.83 | 22,194.41 | 0.00 |
| Decision | Alternative value | Alternative value | Winning value |
Winner: San Diego County, CA. Objective: minimize. Margin to next option: 19,060.83 USD. Assumption: Compare only modeled county risk-cost NPV at identical property value, ownership horizon and discount rate; lower modeled cost does not establish a safer parcel or a better purchase.
- winner
- county-06073
- objective
- minimize
- metric
- riskNpv
Source and assumptions
- One authenticated native comparison response supplies every column. Each option is matched by its submitted ZIP and returned county FIPS, never by response order.
- ZIPs select county-level records; these are not parcel or ZIP-level loss predictions. Only location changes; property value, ownership years and discount rate are identical and echoed by the API.
- Dollar figures are RiskBeforeBuy modeled risk costs, not FEMA property valuations, insurance quotes, guaranteed losses or a recommendation to buy. The ranking compares the NPV model only; separate risk-intelligence grades and monthly estimates use a different model and are not mixed into it.
- The API names FEMA National Risk Index v1.20 and supporting sources but supplies no source collection/update date, calculation sample size or uncertainty interval. Request time is not source vintage. A numerical difference does not establish statistical significance.
Los Angeles County, CA. Data layer: RiskBeforeBuy county risk-cost NPV model. Source: FEMA National Risk Index v1.20; FEMA NFIP Claims Database; FEMA National Flood Hazard Layer; FEMA Disaster Declarations; FBI Uniform Crime Report. Vintage: Source dates unavailable; NRI version v1.20. Sample size: UNAVAILABLE.
Fetched: 2026-10-05T09:00:03.647Z
Source updated: Unreported
Cache: Unreported
Response SHA-256
11e259e0d76f21540c6f5735e1ba3c00e4a21fc44bc1a97d14301c275fa3140cRiverside County, CA. Data layer: RiskBeforeBuy county risk-cost NPV model. Source: FEMA National Risk Index v1.20; FEMA NFIP Claims Database; FEMA National Flood Hazard Layer; FEMA Disaster Declarations; FBI Uniform Crime Report. Vintage: Source dates unavailable; NRI version v1.20. Sample size: UNAVAILABLE.
Fetched: 2026-10-05T09:00:03.647Z
Source updated: Unreported
Cache: Unreported
Response SHA-256
11e259e0d76f21540c6f5735e1ba3c00e4a21fc44bc1a97d14301c275fa3140cSan Diego County, CA. Data layer: RiskBeforeBuy county risk-cost NPV model. Source: FEMA National Risk Index v1.20; FEMA NFIP Claims Database; FEMA National Flood Hazard Layer; FEMA Disaster Declarations; FBI Uniform Crime Report. Vintage: Source dates unavailable; NRI version v1.20. Sample size: UNAVAILABLE.
Fetched: 2026-10-05T09:00:03.647Z
Source updated: Unreported
Cache: Unreported
Response SHA-256
11e259e0d76f21540c6f5735e1ba3c00e4a21fc44bc1a97d14301c275fa3140cQuestions about this comparison
Which county has the lowest modeled risk cost?
San Diego County, CA has the lowest modeled 30-year risk cost NPV: $22,061.61. The margin to the next option is $19,060.83. Los Angeles County, CA: $41,122.44; Riverside County, CA: $44,256.02; San Diego County, CA: $22,061.61. This is a county model comparison, not a property-specific loss forecast.
Do the locations use identical inputs?
Each county uses $500,000.00 property value, 30 ownership years and 3.5% discount rate. The API echoes those inputs in every option. ZIP mappings: 90012 selects Los Angeles County, CA (FIPS 06037); 92501 selects Riverside County, CA (FIPS 06065); 92101 selects San Diego County, CA (FIPS 06073).
What supports the estimates, and what is unknown?
Dollar figures are RiskBeforeBuy modeled risk costs, not FEMA property valuations, insurance quotes, guaranteed losses or a recommendation to buy. The ranking compares the NPV model only; separate risk-intelligence grades and monthly estimates use a different model and are not mixed into it. The API names FEMA National Risk Index v1.20 and supporting sources but supplies no source collection/update date, calculation sample size or uncertainty interval. Request time is not source vintage. A numerical difference does not establish statistical significance.
Can I change these inputs in the calculator?
Each calculator link carries the ZIP and every shared input. The deployed lookup reads the ZIP automatically; property value, years and discount rate are not automatically applied. Full NPV controls and results require a paid account. Set property value to $500,000.00, years to 30, and the field labeled Mortgage Rate to 3.5%; that field supplies the calculator's discount rate. The API source link preserves the exact comparison inputs; full results require your own product key.