The Thorsen House, one of the ‘Ultimate Bungalows’ designed by Greene & Greene, masters of the Arts & Crafts, was built in 1910 and owned by the Thorsen family for thirty-three years. Sigma Phi has owned this marvelous property for seventy-five years. Time has taken its toll and Sigma Phi has been constantly challenged to maintain its architectural landmark. This article recounts how Sigma Phi succeeded in overcoming the most serious threat to its occupancy of the Sig House in those seventy-five years.