Registration required. This web-based training addresses seismic assessment and retrofit of detached single-family wood-frame dwellings. The simplified assessment methodology uses a six-page form to assign each dwelling a structural score based on observed dwelling characteristics, a seismic hazard score based on dwelling location and site hazards, and a resulting Seismic Performance Grade between A and D-. The assessment goes on to identify assessed items that could be retrofit and the improved grade that could result with retrofit.