Investment firm Rock Ventures is in the process of buying a 25-story office building in downtown Detroit, the Detroit News reports.  If the deal goes through, it will be the 16th property in Detroit purchased by the firm since January, 2011.

Rock Ventures is owned by Dan Gilbert, founder of Quicken Loans. Quicken has moved 7,000 employees to downtown Detroit.

"Our focus in 2013 will be on the three Rs — residential, rail and retail — all of which are vital in creating the vibrant, thriving urban core that we all envision," Gilbert said in a December  statement.

Read the Detroit News article here.