Campus Apartments and Clarion Partners have put five student apartment complexes in four cities up for sale and are seeking over $500M, the latest in a string of student housing portfolios to hit the market.

The joint venture is hearing offers on a 2,643-bed, 811-unit portfolio spread across buildings in Ann Arbor, Michigan; Clemson, South Carolina; Knoxville, Tennessee; and Tallahassee, Florida, Green Street reports.

The joint venture has enlisted CBRE to market the portfolio, which is valued at roughly $550M, or $678K per unit, according to Green Street. The properties are located near some of the largest schools in the country — the University of Michigan, Clemson University, the University of Tennessee and Florida State University.

The portfolio is one of a couple that have been put on the market recently, showing the rise in interest in the sector as sales activity falls in more traditional asset classes.

A joint venture of Ceruzzi Properties and Park7 Group is marketing an 11-property portfolio for $1.1B, which includes 2,906 units primarily in the Sun Belt, per Green Street, while London-based AGC Equity Partners and Pennsylvania-based GMH Communities are listing a six-property, 724-unit portfolio for $350M.

The Campus and Clarion partnership dates back to 2015 when the pair closed on a $402M U.S. student housing fund that was used to invest in housing and other campus-related real estate, Student Housing Business reported.

Campus Apartments has $1.5B in assets under management and operates in 18 states, according to the company website. The operator has partnered with over 50 universities, including the University of Pennsylvania, Howard University and Emory University.