Smart home development has many methods that cause the rise of various smart home systems which has its own uniqueness on every system. Nevertheless, those systems could not accommodate their communication and information sharing. It causes the difficulties of collaboration on a system to another, and it makes hard to implement an existing models on a new system. One of solution to answer this problem is to implement ontology. Ontology allows the preparation of structured system that corresponds to a specific character in accordance with the needs of the system. Ontology implementations in Smart Home are expected to ease in managing information and using information. In this research, an ontology is built. The ontology would be mapped from the smart-home object based generic design. We developed a simple system by utilizing the ontology that has been built. Based on the experiment has been done, the ontology has had a consistent structure and appropriate with the smart home system design requirement. Based on tests that we have done, the ontology is easy to be implemented into a system. Besides, with a limited instance, the ontology has been successfully delivered 81.027 % appropriate response with 0.0146 second average response time to the residents activity in the smart home environment.