Throughout the world millions of people are at unacceptable risk because they live in unreinforced earthen dwellings, which have consistently shown extremely poor structural behavior during earthquakes. This article presents a design procedure for the structural reinforcement system for one-story earthen constructions located in seismic areas. The proposed reinforcement consists of a mesh made of nylon ropes which envelopes completely all the earthen walls and maintains structural integrity even after the walls have been significantly damaged. It is thought that its use has the potential to protect the lives of millions of families which are currently are at risk, and the integrity of invaluable earthen historical monuments.