This paper explores the entry point of BIM technology in promoting intelligent construction and proposes an engineering safety accident prediction model for the construction of age-friendly intelligent buildings based on the gray prediction GM(1,1) method. Based on the physical condition of the elderly, the needs of the settlement, at the same time, the construction of an intelligent old-age design system, according to the needs of the corresponding response to the old-age building design, to facilitate the residence. The intelligent floor plate is identified as an example of the intelligent design results of age-friendly buildings by empirically analyzing their willingness to construct age-friendly intelligent buildings. In the willingness analysis, the survey results were analyzed for reliability validity and correlation; the reliability