In 1989, Andrew Zahner's great-grandson, L. William Zahner III became company president, and is credited with transforming the company from a regional sheet-metal contractor into a national architectural metals and facades producer.

[1] During the past thirty years, the company produced the exteriors for notable structures including the de Young Museum in San Francisco, California, the Experience Music Project in Seattle, Washington, and is producing the upcoming National September 11 Memorial & Museum in New York City.

Zahner holds five patents which pertain to the Architectural Metals industry[3][4][5][6][7] Zahner President and CEO L. William Zahner serves as the Industry Liaison for the National Architectural Committee of SMACNA, and in 2006, was awarded the Copper Medal, Associazone Italiana di Metallurgia (AIM).

[8] On January 21, 2011, companies Zahner and KME announced a joint venture, Zahner-KME.

The venture will offer engineering and building services to architects in the European Market.