Berkshire Hathaway GUARD is a Property & Casualty insurer rated A+ â€Superior†by A.M. Best Company as of 4/20/21 and ultimately owned by the Berkshire Hathaway group. Our comprehensive product portfolio is designed for consumers of all types and sizes, so we feature many options for customization aimed at meeting the unique needs of each of our customers. Lines of coverage we currently write include: Workers’ Compensation, Businessowner’s (Property/Liability) Policies, Commercial Umbrella/Excess Liability, Commercial Auto, and Professional Liability (with most of these being available in most states), as well as Homeowners/Renters and Personal Umbrella. The company works with a carefully selected network of independent agents and brokers.