Lifesafety design of buildings in Japan has long assumed able-bodied persons as their users. The ratio of aged persons has long stayed around 5% of the population, and necessary measures for the aged were separately considered. The situation is changing as the aged population is rapidly increasing. Japan expects to be one of the most aged countries in the world in 2020 with about a quarter of its population 65 years and over. People with disabilities have also been separately taken care of. For them, the barrier-free design was separately provided, without integration with their families and friends. The move is toward integration, equal opportunity. In public buildings, this is gradually developing along with new construction activities. Accessibility is gaining its ground. But how about egressibility? There were few discussions on this. Major reason was that if one started the discussion, the issue of accessibility was sure to be thrown away as impossible. Even the accessibility standards were thought to be a heavy burden that would hinder economic competence. Seen from the viewpoint of accessibility, for wheel-chair users in particular, the situation is still bad. Few train stations have accessible elevators; one must ask for special arrangements in order to use them. Only newer metro systems are introducing accessible elevators that are usable by everybody; wheel-chair users, pram users, travellers with heavy luggage. It is therefore quite natural that egressibility was rarely discussed. If one has access to a place, the logical outcome is that one should also have the right to egress. It involves the question of available time for egress. One must compete with the quickly worsening situation. How can this be accomplished? In specially designed buildings and facilities for the special population, the level of safety is required by building and fire codes and regulations. In larger buildings, the concept of protected lobby with emergency elevators, or well designed fire compartmentation, can serve the purpose. What can be used for smaller buildings, including dwelling units themselves? The assumed level of safety will be the standard for the provision of measures to secure lifesafety of people with disabilities and the aged persons. A proposed concept for dwellings is simplified sprinkler systems. They will surely respond to the emergency needs in the sense that they will hold back the development of fire as well as notify others (possibly the fire department) to come and extinguish fire. They are at least superior to fire detectors/alarms because simple detection and warning will be of no use for those who have difficulty in moving around.