100 Van Ness Avenue is a residential building located in San Francisco, California, USA. The building was originally constructed in 1974, and the facade was retrofitted in 2015. The retrofit involved mainly retention of the existing building structure and re-skinning of the exterior of the building. Additionally, a removal of a portion of the mechanical floor at the top of the building will allow a common open space for project residents. This adaptive reuse project changes the original office use to create 399 residential units and 6,375 sq. ft. of ground-floor retail.