KM has become an essential need for survival in the over-all industry, not as a simple paradigm but as a critical factor for success. So, the construction industry shows a strong tendency to adopt KM. KM in the construction industry, as an early phase, is focusing on storing knowledge in KMS. After midterm of applying KM, however, the quality of knowledge is more important than the quantity. And most construction companies could store all knowledge except the secrets and sexual issues. The results of evaluation for storing knowledge are very different by evaluator because of the subjective evaluation, in spite of the standard. So, this paper presents a evaluation model for more objective evaluation.