Kerkstra Portable Restroom Service, Inc. Portable Restrooms Kerkstra Portable Restroom Service, Inc. Visit Website 8507 - 48th Ave Hudsonville, MI 49426 (616) 662-2677 (616) 662-2678 (fax) Hours: Monday through Friday 8 AM until 5 PM About About We offer BEAUTIFUL, spacious, and CLEAN portable restrooms for your many needs. -Special Events-Construction-Weekend rentals-Wedding Units-Handi cap accessible units-Hand washing stations-AND more!