// Add support for Genesis layouts to listings post type add_post_type_support( 'your_post_type', 'genesis-layouts' ); // Force layout on custom post type add_filter('genesis_site_layout', 'your_post_type_layout'); function your_post_type_layout($opt) { if ( 'your_post_type' == get_post_type() ) $opt = 'full-width-content'; return $opt; }