About Me

Mark has been selling commercial real estate since 1981 and has consistently been one of the top shopping center investment brokers in Metro Phoenix. Mark also has expertise with and has sold industrial and office buildings, multi-family properties and land. Mark co-founded Rein & Grossoehme in 1993, which recently celebrated its 28th anniversary. Prior to this he spent almost thirteen years with the Phoenix office of Marcus & Millichap where he was trusted to be the Designated Broker, was a Senior Sales Associate and received numerous annual and quarterly awards for sales. Mark prides himself on his in-depth knowledge of shopping centers resulting from his extensive sales experience and actual shopping center ownership- that differentiates him from most other brokers. One look at his highly detailed marketing packages will tell you how thorough and knowledgeable he is. Mark has an unmatched track record of short marketing times and high percentage of sales price to listing price. Mark’s clients will tell you that he takes a very sincere interest in their long-term success and that his commitment to his clients is more like a partner than a broker.


I concentrate on selling shopping centers but have also sold industrial, office, self-storage & land. I track over 2,000 shopping centers in the Metro Phoenix area and all commercial properties in Payson.


I have an unmatched track record for selling properties quickly and at a high percentage of the listing price.


I closely follow market trends and produce my own market statistics to be able to predict changes in direction.


I have been selling commercial real estate for over 40 years. The first 13 of those were with a major national firm. The last 30+ years has been with my own company.


I read every document and understand every number. My clients take comfort in my in-depth knowledge of the properties I represent.


I utilize every available technology to gain an edge over the competition. I consider myself extremely tech-savvy.


I have been told my loyalty to clients is more like a partner than a broker. I have numerous client relationships that span decades.


My actual ownership of a number of shopping centers gives me valuable insights that most brokers do not have.