The purpose of this study was to develop the competency based assessment model on job performance in the housekeeping department apprenticeship. It produced the design and the assessment tool also the draft of apprenticeship guidance book. This research used descriptive method with research and development approach. The development study was distributed into three tranches, i.e. the introduction study, the development and the validation test of model. The respondent is limited to the learners with hotel accommodation expertise, also the internal and external mentor. Data were collected from several interviews, observation, trial and validation judging by the expert. The data was analyzed according to the procedures and characteristics of the findings, both quantitatively and qualitatively. The findings showed that the development competency based assessment model on job performance in housekeeping department apprenticeship including the stages of preparation, process and result practices. First, we judged the work ability to prepare tools and material practices were judged. Second, we judged the work ability that suitable with job performance in housekeeping department. Finally, the display of the practice results that suitable with standard operating procedures of housekeeping department was judged.