Self Storage Tucson
Argus Professional Storage Management (APSM) powered by SmartStop is the second largest exclusively third-party management company in the self-storage industry. APSM manages 227 stores across 26 states (as of October 1, 2025), encompassing approximately 16.6 million rental square feet, 102, 000 units. APSM generates more than $150 million of revenue per year for its third-party management stores and annually completes more than $10 million in capital improvements for its clients. Founded in 2012, APSM is headquartered in Tucson, Arizona, with corporate offices in Phoenix, Arizona; Denver, Colorado; and Dallas, Texas.