Extra Space Storage Inc. is a publicly traded real estate investment trust and the largest self-storage operator in the United States, owning and operating thousands of storage facilities across the country that offer month-to-month rental of storage space to both residential customers (individuals relocating or downsizing) and commercial customers (small business owners). Beyond its core storage rental business, the company generates additional revenue through tenant insurance reinsurance, management fees from operating third-party owned facilities, bridge lending to other storage operators, and preferred stock investments in self-storage companies. The company makes money through monthly rental payments from tenants, management and financing fees, and dividend income from investments, while pursuing growth through acquisitions, development of new facilities, portfolio optimization, and strategic partnerships.