Mid-Continent Casualty Company, part of American Financial, has filed for a 29.1% rate increase for its Kansas Homebuilders commercial general liability program, affecting 168 policyholders and generating an estimated $394,474 in additional written premium if approved.

The filing, submitted on June 11, 2026, requests a January 1, 2027 effective date for both new and renewal business.

The proposed changes focus primarily on three key homebuilder classifications that account for most of the program’s premium volume. Mid-Continent is seeking to increase the base rate for General Contractor – All Other (class code 900500) from $40.00 to $52.00, General Contractor – Products/Completed Operations (900501) from $0.78 to $1.01, and Commercial Construction (900541) from $1.50 to $1.95. The company said the 30% increases to these classes translate into an overall statewide rate impact of 29.1%.

According to the filing, Mid-Continent’s actuarial indication supported a 29.6% increase after blending Kansas experience with countrywide results. While Kansas-specific data produced a negative indication of 14.4%, the state’s Homebuilders book generated only 21 claims between 2021 and 2025, resulting in a credibility factor of 13.9%. As a result, the insurer relied heavily on a 36.7% countrywide indication, which reflected deteriorating loss experience across the broader program.

The insurer cited social inflation and rising construction costs as key drivers behind the filing. Supporting documents reference the increasing frequency of nuclear verdicts, the growth of third-party litigation funding, persistent labor shortages, and higher material and equipment costs within the construction sector. The company also noted that residential construction input costs have continued to rise, contributing to higher claim severities.

Mid-Continent’s Kansas Homebuilders program is available to general or paper contractors that subcontract between 75% and 100% of work to adequately insured subcontractors, maintain annual gross sales of at least $300,000, and primarily build residential structures of three stories or fewer. The minimum premium for the program remains $750.

The filing follows Mid-Continent’s previous Kansas Homebuilders rate revision, which took effect on September 1, 2024, and increased rates by 25.35%.