Corporate reputation becomes the end-goal for every company which needed to be earned well by doing several steps. One of those steps is doing the Signaling Theory as an Action part of the Company to build corporate reputation. Japandi itself is a new trend design of 2020 and PT. Dekoruma Inovasi Lestari as a web-based home living company who has been established since 2015 are going to build Japandi as corporate reputation. In this research is using signaling theory as primary theory. Methods that used are qualitative and descriptive to explain the steps of signaling activity. Social media is supporting the company to communicate in this modern world which is a two-way communication that is more effective and faster. The result of this research is many audiences are starting to recognize Japandi as the signature style of PT. Dekoruma Inovasi Lestari. However, every good thing has weaknesses and it requires a well-preparation to do a signaling theory to build corporate reputation in social media.

Keywords: Communication, Public Relations, Signaling Theory, Corporate Reputation, Social Media