Tendering processes involves tedious and complex procedures. In construction,analysing acollection of tender document is complicated and demanding task which requires in depth knowledge of domain experts. Inconsistency information and lack of knowledge during decision-making process could trigger to wrong decision. In addition,vast amount of information is in unstuctured forms need to be managed into a systematic manner. The aim of this research is to develop a generic ontology-based archutecture for supporting tendering processes and proves the effectiveness of the approach in contruction tender evaluation process emphasizing only on checking sufficiency documents. Here,ontology is built to capture and stucture domain expert knowledge based on criteria and preferences demand for tender evaluation. Keywords: Ontology; tendering; tender evaluation.