We were asked to render an opinion on prior evaluations which recommended extensive building-wide rehabilitation of this 14-story, 1971 non-ductile concrete frame building. An appraisal of actual building response to strong ground motion was used to identify several potential weaknesses in the structure. This evaluation was extended to predict the probable sequence of system deterioration from which emerged a dominant weakness. A simple fix was proposed and both the need and effectiveness of the retrofit were then confirmed in the laboratory. A cyclic response study of a 3/4 scale model was used to quantify available subassembly ductility. Ductility demand on the components of this concrete frame was estimated using an inelastic time history response procedure. This program saved over $4 million in rehabilitation costs.