Wednesday, October 5th, 2005 — According to preliminary estimates by ISO’s Property Claim Services (PCS) unit, Hurricane Katrina is expected to cost U.S. property/casualty insurers an estimated $34.4 billion in insured property losses, making it the costliest U.S. catastrophe ever. Policyholders in the affected states are expected to file more than 1.6 million claims for damage to personal and commercial property, automobiles, and boats and yachts.