G-level open space is an effective way to create more open space for public congregation and community life in densely populated cities like Chong Qing, and compact neighborhoods like NFHY. One prototype for modern G-level open space of NFHY was the traditional housing in southeast China; the other was the worldwide modern architectural movement, especially Le Corbusie’s work. Compared to other kinds of open space, G-level open space is distinctive in its dualism; it has the qualities of both interior space and public space. Findings in NFHY show that, with it peculiar space quality, G-level open space integrated private life and public life, making the space more attractive to the residents, especially seniors and children. In order to encourage the developers to incorporate more of this kind of open space in their projects, the government needs to make some compromise on building regulations.