This October, Philadelphia-based lighting design firm, The Lighting Practice, celebrates its 25th Anniversary. The practice was founded in 1989 by lighting designer Alfred R. Borden with the goal of creating a collaborative work environment “dedicated to design excellence and client service.” 

Today, under the direction of Borden, along with President and Principal Helen K. Diemer, Principal Michael A. Barber, and Associate Principal Jered E. Widemar, the office employs 20 designers. The firm’s portfolio of work spans a variety of project types including healthcare, corporate and educational facilities, hospitality, and streetscapes. The firm’s work has received a number of lighting industry awards including IES Awards and an AL Light & Architecture Design Award Commendable Achievement Award for the lighting of the Avenue of the Arts in Philadelphia.

Recently completed projects include the new façade lighting for Madison Square Garden in New York and the façade lighting for 230 Park Avenue, also in New York.

Note: The previous version of this article incorrectly listed the number of firm employees. It is 20, not 15.