1963: Frank Lucas gets his architecture license and opens a one-man office.

1964: Architect Sidney Stubbs and Lucas form Lucas and Stubbs Associates Ltd.

1965: Lucas and Stubbs finish their design for the Gaillard Municipal Auditorium.

1968: The firm merges with Poplin Engineers.

1970: Lucas elected president of S.C. American Institute of Architects.

1974: Thom Penney, now CEO, joins the firm, where he interned as a high school student, and designs the College of Charleston Center for the Arts.

1982: The firm is renamed LS3P after taking on partners Vito Pascullis, Richard Powell and Penney.

1984: The Gibbes Museum of Art does a feature on the firm’s first 20 years of design.

1988: The firm designs the renovation of an old train building into Charleston Trident Chamber of Commerce offices at 32 Mary St.

1996: The firm wins its 75th award for design excellence, designs Saks Majestic Square at King and Market streets.

1999: LS3P merges with TBA2 of Charlotte to create the Carolina’s largest architectural firm, with 180 employees.

2003: Penney serves as 79th president of the American Institute of Architects.

2004: LS3P merges again with Boney Architects, an 82-year-old firm, to expand its presence in North Carolina.

2005: LS3P opens a Columbia office; begins design work on Lowes Corporate Headquarters.

2008: The looming recession causes LS3P to undergo a painful downsizing, but it remains the Carolina’s largest architecture firm as its competitors contract, too.

2010: LS3P and NBBJ win a design award for the Medical University of South Carolina’s Ashley River Tower, one of the firm’s largest projects ever, in terms of cost.

2011: LS3P acquires Neal Prince Architects of Greenville to increase its Upstate presence and its expertise in faith-based design work.

2013: The firm marks its 50th year. It has offices in six cities, more than 200 employees and more than 70 percent of its business coming from repeat clients.