Although it is important to keep construction drawings and renovation history, the construction contents of the house are usually left to discretion at the site, and sometimes it is difficult to grasp the actual situation from any drawings that remain. Now the inside of the walls and the groundwork, which you usually cannot see, can be viewed by loading images of the structure and the facility wiring during construction, taken by a fully-spherical camera, and overlapping such images with the current status after completion. Renovation contractors who previously depended on their intuition and experience, as well as clients who have no idea where they should fix the furniture can now see the condition inside the wall simply by holding a tablet toward the wall, enabling safe and efficient construction. The timing for replacement, emergency contact and information on the care of materials can all be displayed by touching a component of an image, providing proper information that is easy to understand for the residents.