Founded in 1948 and headquartered in Mesa, Arizona, Riggs Plumbing is the largest residential plumbing contractor in Arizona.

Riggs’ management, including a member of the Riggs family, sought a capital partner with whom to buy the Company, at the time a division of Texas-based American Plumbing & Mechanical, Inc. (AMPAM), which had acquired the Company from the Riggs family in 1999.

Montage acquired Riggs in June 2004 in partnership with management.

Montage successfully exited its investment in Riggs in April 2005.