An internally managed REIT is a real estate investment trust that employs the investment managers and support staff that manage the operations of the company day-to-day. In other words, the REIT manages its own portfolio, rather than outsourcing that task to an external management team.
How internal REIT management evolved
The first REITs ever developed were externally managed, following a convention borrowed from the private equity industry. Since then, the vast majority of U.S. REITs have shifted to an internal-management model. In fact, the rise of internally managed REITs has more to do with the disadvantages of an external manager than anything else.
Over time, REIT shareholders have found that the interests of external REIT managers did not always align with their own priorities. Managers often focused on maximizing their own fees rather than driving long-term shareholder value. The conflicts of interest were compounded because external managers may have been working with numerous other REITs, an arrangement that limited their time to focus on any one REIT.
In response, many REITs brought management in-house. By making the managers employees, the REIT is better able to align the company's day-to-day decision-making with long-term shareholder priorities. At the same time, the management team is tasked with managing a single portfolio, rather than juggling the needs of numerous, separate REITs.