Habitat for Humanity of Williamson County, 2108 N. Austin Ave., Georgetown, celebrates its 20th anniversary and the completion of a recent office expansion with an open house and ribbon-cutting ceremony April 11. The events start at noon, according to the nonprofit organization, which provides affordable housing and other services to families in need. Office expansion work at the nonprofit’s Georgetown office included new reception and volunteer areas, a conference room and an additional restroom. 512-863-4344. https://williamsonhabitat.org