American Modern Property and Casualty Insurance Company has filed revisions to the underwriting guidelines for its Collector Vehicle Program in California, with a requested effective date of October 15, 2026. The filing replaces the existing underwriting manual and is limited to rule changes, with no impact on rates, eligibility, or overall underwriting appetite.

The updates are primarily administrative and clarifying in nature. Submission requirements were refined to confirm that photos are required for all new business, with clearer guidance for stock and modified vehicles, and explicit authority for underwriters to request additional information. Ownership language was revised to remove references to corporations and focus on individuals, trusts, and LLCs, while alternative storage arrangements now require underwriting approval.

For higher value risks, vehicles or collections exceeding $500,000 will require additional documentation through a High Value Supplement form. The company also expanded its review framework by increasing the required accident and violation history from three years to five years and adding new review triggers such as vehicles classified under “other” usage and risks with unverifiable motor vehicle records.

Additional operational changes include the introduction of geographic catastrophe accumulation management language that allows the company to limit new business in high concentration areas, the removal of the Temporary Suspension of Writings section, the addition of a General Rules and Rating Information section, and standardized cancellation and administrative wording.

The core structure of the program remains unchanged. Coverage continues to target collector vehicles used on a limited basis for exhibitions, club activities, and occasional leisure driving, stored in secured facilities, and insured on an agreed value basis.