ABR is a privately-owned real estate investment manager organized in and headquartered in Baltimore, Maryland. Deitelzweig, who moved over from Building and Land Technology, said he first set out to trim holdings in markets where Marx no longer planned to focus, and reposition properties in markets where he saw opportunity. Your answers are anonymous and the data is only used to improve and enhance our website and the services we offer. Overall, the company owns 67 properties in 17 states, totaling 6. Log In Sign Up. Candidates should have years of experience. Please start a new search to see additional properties!