Northern Arizona University opened Dorm K for women in 1968. The University renamed the building Allen Hall in 1979 to honor retired faculty member Dr. Agnes Allen. In 1968, it cost $184 semester to live here. Men were only allowed in the building between 9am and 2am and had to be escorted by a female resident. The building provides a kitchen and a study lounge. The dorm houses up to 460 students and became co-ed in 2005.
Dr. Agnes Allen served as the first Dean of the College of Arts and Sciences when NAU became a university in 1966. Allen is remembered for taking students to the Grand Canyon to explain area geology. She believed students enriched their learning with experiences beyond textbooks.