An interior design concept statement is the essence of an interior design proposal. if you are bidding on a project or entering a design competition, the design concept statement lays the groundwork for the visual components of the presentation. Never assume that your design can speak for itself! An Interior design concept statement must effectively convey your inspiration and vision for a space. It briefly addresses how you went about creating the design and handled specific design challenges. The statement should also articulate the room’s overall ambience.