Although Article 99-1 of the Building Technical Regulations had gone into effect in 2013, existing long-term care institutions, senior citizens homes and nursing homes for the elderly had not been required to comply with the restrictions prescribed in the article. To improve the fire safety for existing institutions, this study looks to draw up a reference handbook for existing institutions established before 2013 to serve as the basis for self-inspections and self-directed upgrades. Hence, this study focused primarily on long-term care institutions, senior citizens homes and nursing homes for the elderly established before 2013 that are at more risk and need not comply with Article 99-1 of the Building Technical Regulations, centering on the "Leave the room and escape when in the room of fire origin; shelter-in-place when not in the room of fire origin", to put forward corresponding design principles for reference. Moreover, in order to gain an understanding of the practical feasibility of the handbook, this study applied its contents to cases surveyed to carry out examination and improvement. It is hoped that the fire safety of existing institutions can be improved through the use of the handbook to establish a safe, reassuring care giving and nursing environment.