Mr. Holmes served as chairman of the Partnership in 1999. From 1980 to 2005, Mr. Holmes was associated with P&O, a UK public company in the development and management of various assets and operating companies in Houston, Atlanta, Denver, Orlando, San Diego and various other US cities.

In 1980, Mr. Holmes founded Commercial Bancshares, Inc., a bank holding company. In 2001, Commercial Bancshares was merged with Prosperity Bancshares, Inc., a multi-bank holding company. He served as Chairman of Prosperity Bancshares, from 2001 until 2006 and is currently on the bank's board.

He served on the City of Houston Planning Commission from 1983 to 1988. He served as a Commissioner of the Port of Houston Authority from 1987 to 1988 when he was appointed Chairman of the Port Commission from 1988 until 2000.

Mr. Holmes was appointed as a Commissioner of the Texas Parks & Wildlife in April, 2003 and served until January, 2007. In February, 2007, Mr. Holmes was appointed as a commissioner of the Texas Department of Transportation.