The Kauffman House is a rustic log house in Grand Lake, Colorado that functioned as a hotel from its construction in 1892 to 1973. It was built by Ezra Kauffman, a local prospector, trapper and builder of log structures who operated it as a hotel until his death in 1920 at age 71. It was then operated as a summer hotel by his widow and daughters until World War II. In 1946 the Kauffmans sold the house to Henry Rhone who operated it until 1973, when the Grand Lake Historical Society purchased the house for use as a museum. It is the only pre-20th century log hotel remaining in Grand Lake.