Spring weather is bringing a sharp uptick in US home insurance claims, as heavy rain, severe storms and fluctuating temperatures expose vulnerabilities in roofs, drainage systems and property maintenance.
Now, Mercury Insurance has flagged the most common spring-related claims - and where simple risk control can prevent losses before they hit the claims register.
According to the Insurance Information Institute, roughly one in four home insurance claims are tied to weather‑related events, with wind, hail and water damage among the most frequent drivers. These risks intensify in spring, when more active storm systems combine with lingering winter damage that may only become apparent once it fails.
For insurers, this sits within a wider pattern: secondary perils such as severe convective storms and inland flooding now account for roughly 65% of global insured natural catastrophe losses, overtaking traditional peak perils and driving higher loss costs in property portfolios.
“Spring claims tend to follow very consistent patterns year after year,” said Bonnie Lee, vice president, property claims at Mercury Insurance. “The good news is many of the most common issues are preventable with a little seasonal maintenance and awareness.”
Roof issues remain one of the dominant themes.
Spring storms frequently bring strong winds and hail that can loosen shingles, damage flashing and create new entry points for water. Thousands of severe hail and wind events are recorded annually in the US, with activity ramping up from March through June, and even relatively minor roof damage can escalate into substantial interior water claims if it goes unnoticed. That translates into repeated, attritional losses rather than headline catastrophes, the kind of secondary‑peril exposure that is increasingly shaping reinsurance costs and deductible structures in homeowners’ programmes.
Water damage and plumbing failures are another core driver.
Water remains one of the most common and costly homeowners' perils, with spring thaw and heavier rainfall putting extra stress on pipes, sump pumps and drainage systems. Claims teams reported that a significant share of weather-tagged losses are ultimately traced back to maintenance-related failures rather than external flooding. Insurers and MGAs are responding by pushing more proactive risk control as they look to "reduce claims before they happen" and strengthen client resilience.
Meanwhile, gutter and drainage problems are closely linked. Clogged or damaged gutters can quickly direct water into foundations, basements and siding.
The risk spikes in spring as debris from winter and early storms accumulates, turning routine maintenance issues into claims. For personal lines carriers operating under tight combined‑ratio pressure, this cluster of roof, gutter and drainage losses highlights the importance of homeowner education, targeted campaigns and simple checklists delivered via agents, apps and renewals.
Tree‑related damage is also more prevalent as wet soil and high winds combine. Spring storms often arrive on saturated ground, making trees more prone to falling or shedding large branches.
Even apparently healthy trees can become hazards under these conditions. That raises familiar underwriting questions about vegetation management requirements, disclosure, and how far to lean on policy conditions versus post‑loss goodwill in handling borderline claims.
Basement flooding from heavy rain rounds out the core spring pattern. Flash flooding and sustained rainfall can overwhelm local drainage, leading to ground‑water intrusion and basement damage, which frequently happens in areas where homeowners may not see themselves as “flood‑exposed”.
FEMA’s evolving flood‑risk maps and the growth of inland flood as a secondary peril are already influencing how carriers view these exposures, particularly in regions where convective storms and ice‑related drainage issues have become more common. Commercial markets in New England, for example, have seen rising concerns over ice damming and water damage inside buildings, prompting some underwriters to adopt per‑unit water deductibles and to tighten terms in higher‑risk zones.
“Homeowners don’t need to wait for a major storm to take action,” Lee added. “A simple spring checklist - roof, gutters, drainage, and trees - can significantly reduce the likelihood of a claim and help protect what matters most.”
