Apartment Insurance Claims Frequency by State: 2026 Research Brief

Claims frequency is one of the primary drivers of apartment insurance pricing, and it varies dramatically by state. ApartmentInsured analyzed aggregate loss data across apartment and multifamily placements to identify the states with the highest and lowest claims frequency patterns. This research brief summarizes the findings and explains the key factors driving geographic variation in apartment insurance claims.

The states with the highest overall claims frequency for apartment buildings, measured as claims per 100 insured units per year, are concentrated in regions with severe weather exposure and older building stock. Texas leads the nation in total claim frequency, driven primarily by hail and wind damage in the North Texas corridor. A single significant hail event in the Dallas-Fort Worth metro can generate claims across hundreds of apartment properties simultaneously. Oklahoma ranks second for similar reasons, with its position in tornado alley adding a catastrophic loss dimension. Florida ranks third, with named storm damage and water intrusion from tropical weather events creating persistently elevated frequency.

The states with the lowest apartment insurance claims frequency tend to be those with moderate weather patterns and newer average building stock. Utah, Idaho, and Nevada consistently rank among the lowest-frequency states for apartment property claims. These states benefit from dry climates that reduce water damage and mold issues, limited hurricane and severe thunderstorm exposure, and relatively newer building inventories in their fastest-growing metro areas.

By claim type, the national pattern is consistent: water damage is the number one claim type by frequency in 48 of 50 states. The only exceptions are Texas and Oklahoma, where hail damage claims exceed water damage in frequency during active storm years. Fire claims rank second or third in frequency across most states but carry the highest average severity nationally. Liability claims (primarily slip-and-fall incidents in common areas) are the most frequent claim on the general liability side, with cold-weather states showing higher frequency due to ice and snow exposure.

Several factors drive the state-level variation in claims frequency beyond weather. Building age is a significant factor. States with older average apartment building stock, such as those in the Northeast and Rust Belt, tend to show higher water damage and equipment failure frequency than states with newer construction. Plumbing material is closely related. States where polybutylene and galvanized plumbing were widely used in apartment construction during the 1970s through 1990s show elevated water damage frequency compared to states where copper and PEX were more common.

Regulatory environment also plays a role. States with stricter building codes, mandatory fire sprinkler requirements for multifamily construction, and more aggressive code enforcement tend to show lower fire-related claims frequency. California's seismic retrofit requirements, while costly to implement, have been associated with reduced earthquake-related damage in retrofitted buildings. Florida's strengthened wind resistance requirements for post-2002 construction have created a measurable difference in hurricane claim outcomes between newer and older buildings.

For apartment owners, understanding the claims frequency profile of their specific state and metro area is essential for insurance budgeting and risk management. Properties in high-frequency states should budget for higher insurance costs, consider higher deductibles to offset premium impact, and invest more aggressively in loss prevention measures. Properties in low-frequency states can leverage their favorable location in negotiations with carriers but should not become complacent about risk management.

Carriers use state-level claims data as a primary input in their pricing models, but they increasingly supplement it with property-specific data and micro-location analysis. An apartment building in a high-frequency state that demonstrates strong loss prevention practices and maintains a clean claims history can still achieve competitive pricing by differentiating itself from the state average.

This research brief is based on aggregate observations from apartment insurance placements and publicly available loss data from state insurance departments, ISO, and NFPA. Individual property claims experience will vary based on property-specific factors. Data reflects observations through Q2 2026.

Key findings summary: Texas, Oklahoma, and Florida have the highest apartment claims frequency. Utah, Idaho, and Nevada have the lowest. Water damage is the top claim type in 48 of 50 states. Building age and plumbing material are significant non-weather drivers. Newer construction in code-strict states shows measurably lower frequency.