Data · California · Homeowners · 2015–2025
California homeowners insurance market share, 2015–2025
Who writes California’s homeowners insurance, and how that changed over eleven years of the California Department of Insurance’s market share reports: premium by year, the 2025 top ten groups, and how concentrated the market is.
Key figures
- Homeowners direct written premium of licensed insurers grew in every year from 2015 to 2025, from $7.4 billion to $16.4 billion (+121.7%). The smallest annual increase was +1.5% in 2017; the largest was +13.2% in 2025.
- State Farm Group was the largest homeowners writer and Farmers Insurance Group the second largest in each of the 11 years. State Farm’s share was 19.87% in 2015 and 20.09% in 2025; its homeowners premium went from $1.5 billion to $3.3 billion.
- Among the 2025 top ten, the largest share gain from 2015 to 2025 was American Family Insurance Group (0.87% → 4.12%, +3.25 pp), followed by Mercury General Group (4.27% → 7.39%, +3.12 pp). The largest decline was Allstate Insurance Group (7.54% → 5.77%, −1.77 pp), followed by Farmers Insurance Group (16.19% → 15.43%, −0.76 pp).
- The ten largest groups wrote 77.89% of homeowners premium in 2015, 76.38% in 2019 (the low point; it rose in every year after that) and 81.55% in 2025. The five largest: 56.23% in 2015, 52.12% in 2019 (the low point) and 56.04% in 2025. Each year’s figure uses that year’s top five or ten.
- Homeowners top ten, 2015 vs 2025: American Family Insurance Group joined; Nationwide Corporation Group dropped out.
What these figures are not. Written premium is dollars, not policies: premium can rise because rates or insured values rise while the number of homes insured stays flat or falls, and these reports do not count policies. Market share is a share of premium written by licensed insurers; it says nothing about whether coverage is available to a given homeowner, at what price, or where in the state.
Homeowners premium by year
Direct written premium, homeowners multiple peril (Line 4), licensed insurers, $ billion. Axis starts at zero.
Top 10 homeowners insurance groups, 2025
| # | Group | 2025 $M | 2015 | 2020 | 2025 | Change | 2015–2025 |
|---|---|---|---|---|---|---|---|
| 1 | State Farm Group | 3,301 | 19.87% | 18.08% | 20.09% | +0.22 pp | |
| 2 | Farmers Insurance Group | 2,535 | 16.19% | 15.21% | 15.43% | −0.76 pp | |
| 3 | Mercury General Group | 1,215 | 4.27% | 5.89% | 7.39% | +3.12 pp | |
| 4 | Auto Club Enterprises Insurance Group | 1,091 | 5.94% | 5.42% | 6.64% | +0.70 pp | |
| 5 | CSAA Insurance Group | 1,067 | 6.70% | 6.43% | 6.49% | −0.21 pp | |
| 6 | USAA Group | 1,000 | 4.60% | 5.95% | 6.09% | +1.49 pp | |
| 7 | Allstate Insurance Group | 948 | 7.54% | 6.47% | 5.77% | −1.77 pp | |
| 8 | Liberty Mutual Group | 902 | 5.81% | 6.38% | 5.49% | −0.32 pp | |
| 9 | American Family Insurance Group | 676 | 0.87% | 2.46% | 4.12% | +3.25 pp | |
| 10 | Travelers Group | 663 | 3.02% | 3.76% | 4.04% | +1.02 pp |
Change is in percentage points (2015 to 2025). Each sparkline has its own vertical scale (at least one percentage point tall), so compare slopes within a row, not heights across rows. Every year’s share for every group is in the trends data.json.
Whose share moved most
| Group | 2015 | 2025 | Change | Premium |
|---|---|---|---|---|
| American Family Insurance Group | 0.87% | 4.12% | +3.25 pp | +950.7% |
| Mercury General Group | 4.27% | 7.39% | +3.12 pp | +283.8% |
| Allstate Insurance Group | 7.54% | 5.77% | −1.77 pp | +69.7% |
| USAA Group | 4.60% | 6.09% | +1.49 pp | +193.7% |
| Travelers Group | 3.02% | 4.04% | +1.02 pp | +196.6% |
| Farmers Insurance Group | 16.19% | 15.43% | −0.76 pp | +111.3% |
| Auto Club Enterprises Insurance Group | 5.94% | 6.64% | +0.70 pp | +147.8% |
| Liberty Mutual Group | 5.81% | 5.49% | −0.32 pp | +109.4% |
| State Farm Group | 19.87% | 20.09% | +0.22 pp | +124.2% |
| CSAA Insurance Group | 6.70% | 6.49% | −0.21 pp | +115.1% |
Concentration: top 5 and top 10
| Year | Total $B | vs prior yr | Top 5 share | Top 10 share | State Farm |
|---|---|---|---|---|---|
| 2015 | 7.41 | 56.23% | 77.89% | 19.87% | |
| 2016 | 7.65 | +3.2% | 55.37% | 77.88% | 19.68% |
| 2017 | 7.76 | +1.5% | 53.22% | 76.84% | 17.61% |
| 2018 | 8.27 | +6.5% | 53.01% | 76.75% | 17.77% |
| 2019 | 9.00 | +8.9% | 52.12% | 76.38% | 17.81% |
| 2020 | 9.77 | +8.5% | 52.57% | 77.09% | 18.08% |
| 2021 | 10.91 | +11.7% | 54.00% | 78.01% | 19.86% |
| 2022 | 12.08 | +10.7% | 55.68% | 79.55% | 21.22% |
| 2023 | 13.22 | +9.4% | 56.06% | 79.84% | 20.69% |
| 2024 | 14.52 | +9.8% | 56.99% | 81.11% | 20.78% |
| 2025 | 16.43 | +13.2% | 56.04% | 81.55% | 20.09% |
The FAIR Plan is not in these figures
The California Department of Insurance describes the FAIR Plan this way: “The FAIR Plan is available to California residents and businesses in urban and rural areas who cannot obtain insurance through a regular insurance company.” It adds: “While created by the Governor and Legislature, the FAIR Plan is a private association whose day-to-day operations are controlled by insurance companies, not taxpayers.” (CDI, California FAIR Plan, retrieved October 13, 2026.)
The FAIR Plan does not appear as a group or insurer in the 2025 detail file we use, so its premium is not counted in the totals or shares above. This page does not estimate FAIR Plan volume.
Methodology
- Source and years. One California Department of Insurance market share report per calendar year, 2015 through 2025 (11 years). Earlier reports are not included.
- Measure. Direct written premium of licensed (admitted) insurers on Line 4, homeowners multiple peril, before reinsurance. Surplus lines insurers are not in these reports. Premium is not a count of policies, and share is not a measure of availability.
- Groups. Each year’s figures use the group codes in that year’s report. The top-ten table follows the 2025 top ten back by group code; every one of those codes appears in every year. If insurers moved between groups, earlier figures reflect the group’s make-up at the time. Top 5 and top 10 shares in the concentration table use each year’s own ranking.
- Checks. In every year the homeowners total matches the department’s premium distribution report to the dollar. Shares are our calculation from the insurer detail file, rounded to 0.01 percentage point.
- No causes. The reports give figures, not reasons. This page describes what changed and does not explain why.
Sources
- 2015: California Department of Insurance, Rate Specialist Bureau, 2015 California Property & Casualty Market Share Report, detail file MktShrDataPC2015WA.xlsx. Retrieved October 13, 2026.
- 2016: California Department of Insurance, Rate Specialist Bureau, 2016 California Property & Casualty Market Share Report, detail file MktShrDataPC2016WA.xlsx. Retrieved October 13, 2026.
- 2017: California Department of Insurance, Rate Specialist Bureau, 2017 California Property & Casualty Market Share Report, detail file MktShrDataPC2017WA.xlsx. Retrieved October 13, 2026.
- 2018: California Department of Insurance, Rate Specialist Bureau, 2018 California Property & Casualty Market Share Report, detail file MktShrDataPC2018WA_RevisedAug1519.xlsx. Retrieved October 13, 2026.
- 2019: California Department of Insurance, Rate Specialist Bureau, 2019 California Property & Casualty Market Share Report, detail file MktShrDataPC2019WA_Apr3020.xlsx. Retrieved October 13, 2026.
- 2020: California Department of Insurance, Rate Specialist Bureau, 2020 California Property & Casualty Market Share Report, detail file MktShrDataPC2020WA.xlsx. Retrieved October 13, 2026.
- 2021: California Department of Insurance, Rate Specialist Bureau, 2021 California Property & Casualty Market Share Report, detail file MktShrDataPC2021_Apr2922_Final.xlsx. Retrieved October 13, 2026.
- 2022: California Department of Insurance, Rate Specialist Bureau, 2022 California Property & Casualty Market Share Report, detail file MktShrDataPC2022.xlsx. Retrieved October 13, 2026.
- 2023: California Department of Insurance, Rate Specialist Bureau, 2023 California Property & Casualty Market Share Report, detail file MktShrDataPC2023wa.xlsx. Retrieved October 13, 2026.
- 2024: California Department of Insurance, Rate Specialist Bureau, 2024 California Property & Casualty Market Share Report, detail file MktShrDataPC2024RevSep0825.xlsx. Retrieved October 13, 2026.
- 2025: California Department of Insurance, Rate Specialist Bureau, 2025 California Property & Casualty Market Share Report, detail file MktShrDataPC2025.xlsx. Retrieved October 13, 2026.
- Context: California Department of Insurance, California FAIR Plan. Retrieved October 13, 2026.
The department’s site policy treats its content as public domain unless otherwise indicated. The reports note “Source: NAIC Database”; we publish only factual figures from the department’s reports, with citation. Lapidar is not affiliated with the California Department of Insurance. Check the source before relying on a figure.