Extra Space Storage at 775 S Mills Ave in Claremont, CA offers a wide selection of storage units with drive-up access, electronic gate security, and parking spaces. The facility is well maintained, clean, and features wide drive aisles, solar sites, and a kiosk for convenience. It provides non-climate-controlled units, deliveries accepted, and personal access hours, making it easy and hassle-free for customers. The location is close to home with convenient freeway access, and vehicles are allowed in drive-up units. The staff is friendly, professional, and helpful, with employees like Jessica and Lesly receiving particular praise for their attentive and courteous service. Customers appreciate the secure environment, the helpful staff, and the overall cleanliness of the facility. Extra Space Storage emphasizes professionalism, security, and excellent customer service, making it a reliable choice for storage needs.