KSS Architects, an architectural design firm based on Witherspoon Street, celebrated is 25th anniversary by volunteering for the Trenton Area chapter of Habitat for Humanity. The firm volunteered at Habitat’s project sites on North Clinton Avenue in Trenton on two Saturdays in August. On August 2, the volunteers hung gypsum wallboard on walls and ceilings in two neighboring houses. Work ended on Saturday, August 16, when the volunteers finished interior painting. In 2000 KSS designed two Habitat homes for the Trenton chapter.