Costello left E&Y a year and half ago to become part of the senior executive team then being assembled by Grubb's recently appointed president and CEO Barry Barovick. Barovick is also an E&Y alumnus.

When word spread that Costello was departing G&E this past July, Barovick told GlobeSt.com that the departure was "a mutual agreement. It is better for Mark in light of the fact that I'm going to be much more hands on. For me to be effective, this was the best way to handle that. But it was definitely a mutual agreement."

"In his position as chief operating officer, Mark brought both passion and professionalism to the job," Barovick stated. Costello is scheduled to arrive at E&Y's Times Square offices next week.

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John Salustri

John Salustri has covered the commercial real estate industry for nearly 25 years. He was the founding editor of GlobeSt.com, and is a four-time recipient of the Excellence in Journalism award from the National Association of Real Estate Editors.