Homesite  received approval in North Carolina for an updated homeowners deviation filing that revises its partner discount rule and other rating factors across the book. The approved effective dates are August 24, 2026 for new business and November 13, 2026 for renewals.

The filing includes a notable change for Costco business. Costco policies produced a 43.3% adjusted loss ratio over the three year period ending in 2025 Q3, below the 51.1% countrywide total, supporting an indicated change of -15.2%. Homesite currently applies a 5% Costco discount and selected a 10 point increase, bringing the proposed discount to 15%, equal to a -10.5% proposed rate change for that partner segment. All other partners, by contrast, showed a 51.4% adjusted loss ratio and only a 0.7% indicated change.

Beyond partner discounts, the filing updates multiple homeowners rating variables, including protection construction, base class premium, county, key factors, age of dwelling, age of home, age of roof, insurance risk score, non-act-of-God claims, channel factor, deductibles, and roof surfacing treatment.

Bottom Line: Costco accounts for only about 4-5% of Homesite’s countrywide book.