Extra Space Storage on 850 S Mt Vernon Ave in Colton, CA offers a large selection of storage units. Features include drive-up access, climate controlled and non-climate controlled units, all-hours access, electronic gate security, and convenient freeway access. The property is clean and provides exceptional security with the manager living on site. The staff is helpful, friendly, professional, and provides excellent customer service. They make the process easy, quick, and hassle-free, answering all questions. Their commitment ensures a smooth and positive experience. The facility is definitely recommended for its reliability and great staff.