gistfile1.txt

add_filter( "houzez_property_feed_properties_due_import_rex", 'niche_homes_only', 10, 2 );
function niche_homes_only( $properties, $import_id  )
{
    $new_properties = array();
    
    foreach ( $properties as $property )
    {
        if ( isset($property['account']['id']) && $property['account']['id'] == '4281' ) // 4281 = accountID for Niche Homes
        {
            $new_properties[] = $property;
        }
    }
    
    return $new_properties;
}