Storage Asset Management (SAM), a self-storage management and consulting company, has announced its operating results for the 2021 fiscal year, which ended Dec. 31. The company increased same-store revenue by 18.3% compared to 2020 and grew net operating income by 26.6%, according to a press release.

As of Dec. 31, SAM managed 442 self-storage locations comprising 26.7 million square feet across 34 states. Its portfolio now includes 105 unmanned storage sites, a 110% increase over the previous year. The company also added two industrial/flex-space properties to its managed portfolio last year.

SAM’s same-store pool for the period consisted of 151 stores that were stabilized by Jan 1, 2021. The company considers a store stabilized once it has been open for three years or sustained average square-foot occupancy of 80% or more for one calendar year, the release stated. If a property reduces in size, it’s removed from the same-store pool until the beginning of the calendar year, at least 12 months from the date of change.

Founded in 2010 by Alyssa Quill and Jay Hoke, SAM employs more than 700 people at its store, regional and corporate office level. It’s based in York, Pennsylvania.