《住宅项目规范》5月起落地实施，对层高、隔音等作出强制规定

Core Viewpoint - The new national standard for residential construction, effective from May 1, aims to enhance the quality of housing by setting mandatory requirements for various aspects such as height, sound insulation, and accessibility, thereby promoting the development of "good houses" in China [1]. Group 1: Space Standards Changes - New residential buildings must have a minimum ceiling height of 3 meters, an increase of 20 centimeters from previous standards, improving natural lighting and ventilation [2]. - The requirement for elevators has been lowered from 7 floors to 4 floors, addressing the needs of an aging population and enhancing convenience and safety for residents [2][3]. - The new regulations align with international practices, reflecting an advancement in residential standards [2]. Group 2: Noise Insulation Improvements - The new standards increase sound insulation requirements between bedrooms and living rooms, with a minimum sound pressure level difference of 50 decibels, up from 45 decibels, representing an 11.1% improvement [5]. - The impact of noise from upper floors is addressed by setting a maximum impact sound level of 65 decibels for floors, a reduction from the previous limit of 75 decibels, resulting in a 13.3% improvement [5]. - Additional noise limits for common facilities like elevators and water pumps are established to further reduce noise pollution for residents [6]. Group 3: Environmental Comfort Enhancements - The new regulations mandate basic performance requirements for winter heating, summer insulation, and ventilation, ensuring that residential buildings are comfortable year-round [6]. - Each residential unit must have at least one room that meets daylight standards, addressing previous issues where some projects compromised sunlight for higher density [6]. Group 4: Human-Centric Design Standards - The regulations include comprehensive requirements for elderly-friendly designs, such as installing handrails and ensuring accessible entrances [7]. - Safety standards for gas and electrical installations are clarified, including specific requirements for the number and placement of electrical outlets [7]. Group 5: Market Opportunities and Industry Impact - The implementation of these new standards may lead to short-term cost increases for developers in materials and construction, but optimized designs can keep costs manageable [9]. - The promotion of high-quality housing is expected to enhance resident satisfaction, accelerate industry consolidation, and stimulate the market for improved housing options [9].