Self-storage: How warehouses for personal junk became a $38 billion industry

Despite recessions and demographic shifts, few building types have boomed like self-storage lockers. In fact, they’ve proven to be one of the surest bets in real estate over the last half century, while malls, starter homes, and even luxury commercial space in big cities, once safe and steady investments, have struggled. Behind the combination locks and roll-up doors lies a $38 billion industry. 

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