Since opening its doors in 1926, Sigma has housed thousands of ADPi’s. Housing Corporation is a group of volunteers that maintains the operations of the house, fosters alumnae relations and raises funds for house improvements, such as a renovated guest bathroom, modern living room furniture and an improved scholarship room for study. Registered as a historical building in 2000, the French Renaissance house, with the help of Housing Corp and committed alumnae,  continues to build lifelong memories for its residents.