Core changes of the new regulation: First, mandatory requirements for elevator configuration, clarifying that elevators must be installed in residences with 4 floors and above. The original standard is that elevators must be installed when the floor is 7 floors and above or the height of the household entrance floor from the outdoor design ground exceeds 16m. The new regulation greatly reduces the floor threshold for mandatory elevator installation; Second, detailed configuration quantity, clarifying that for residences with 12 floors and above, each building should be equipped with no less than 2 elevators, among which 1 elevator that can accommodate stretchers should be installed; for residences with 18 floors and above, each building should be equipped with no less than 3 elevators, among which at least 2 elevators that can accommodate stretchers; Third, mandatory requirements for barrier-free and aging-friendly, residential elevators must comply with barrier-free design specifications. Handrails, large-font buttons, and voice announcement devices must be installed in the car. The clear width of the landing door is not less than 0.9m, the clear width in the car is not less than 1.6m, and the clear depth is not less than 1.4m, which can accommodate standard stretchers; Fourth, machine room and shaft design requirements, clarifying that the design of elevator machine rooms and shafts must comply with sound insulation and vibration reduction requirements. Elevator shafts adjacent to bedrooms and living rooms must adopt sound insulation and vibration reduction measures, and elevator operation noise complies with national limit standards; Fifth, adaptation of existing residential transformation, clarifying that the design and construction of elevator installation in existing residences must comply with the relevant requirements of this code, encouraging the installation of barrier-free and aging-friendly elevators in existing residences, and supporting the renewal and transformation of elevators in old communities.