/**
 * Change address checkout fields to textarea
 */

add_filter('woocommerce_checkout_fields' , 'cc_change_address_input_type', 10, 1);

function cc_change_address_input_type($fields) {

  $fields['billing']['billing_address_1']['type'] = 'textarea';
  $fields['shipping']['shipping_address_1']['type'] = 'textarea';
  return $fields;

}