This research aims to identify the extension worker's performance level and the farmer's perceptionto the extension worker's performance of West MetroBP3K as BP3K CoE Model in West Metro District,Metro City. This research was done in four Sub-Districts namely Mulyojati, Mulyosari, Ganjar Agung,and Ganjar Asri as development area BP3K West Metro. The research was conducted on July to August 2013. The number of samples were 7 extension workers and 95 farmers that was taken usingproportional random sampling. The analysis method is used in this research is descriptive, qualitativemethod and Rank Spearman analysis. The result of research show that: (1) The level of extensionworkers performance in BP3K West Metro district was categorized into medium class (2) The level offarmers' perception to the extension worker's performances of West Metro BP3K were categorizedinto medium class (3) The factors relating to the farmers perception in extension worker's performanceof West Metro BP3K were level of farmer's education, farmer's social interaction, and the level offarmer's income. The farmer's age, the length of farmer's experience, and the number of farmer families member were not really related.