This subsidy supports modifications and renovations of multifamily rental housing aimed at enhancing child safety and security (accident prevention, crime prevention measures) and fostering resident interaction and community formation among parents during the child-rearing phase. Eligible applicants are rental housing owners (landlords) throughout Japan, with no restrictions on company size or business form. Subsidies cover part of the renovation and facility costs required for such improvements, with specific subsidy caps and rates detailed in the public call for proposals. Key requirements include demonstrable contributions to child safety/security and creation of opportunities for parent-to-parent exchange through improved housing design and resident programming. The program operates under the Smart Wellness Housing Promotion Subsidy Guidelines, administered through the Child-Rearing Support Type Multifamily Housing Support Center.