Willits, Cal., Code of Ordinances ch. 17.62 § 17.62.030

A. Interior Access Drives. Interior private access drives shall be paved with a minimum of two inches of asphaltic cement over six inches of compacted base, and shall be paved to a width of not less than sixteen feet for one-way traffic, twenty-five feet for two-way traffic. All corners shall have a minimum twenty-five-foot radius.
B. Open Space.
1. At least one substantial area of group usable open space shall be provided. Such area shall:
a. Total at least one hundred fifty square feet per dwelling unit; required setbacks shall not be considered open space;
b. Be landscaped;
c. Include outdoor recreational facilities for both active and passive recreation.
2. Private open space areas shall be provided as follows:
a. Above Ground Level. Sixty square feet, the least dimension which is seven feet;
b. Ground Level. One hundred twenty square feet, the least dimension of which is ten feet and which is enclosed by a view-obscuring fence four to six feet in height; a "private open space" shall be an area contiguous to the individual dwelling unit which allows its occupants the personal use of an outdoor space; each dwelling unit shall have at least one private open space;
c. Refuse Storage. There shall be adequate areas provided for refuse storage. Such refuse storage areas shall be screened from view by a six-foot-high solid fence, and shall be no more than one hundred feet from any residence;
d. Access. Each apartment complex shall have direct vehicular access from a publicly maintained street. This requirement does not apply to the expansion of an existing apartment complex when adequate access is obtained through the existing portion of the apartment complex;
e. Storage Areas. Storage areas of a minimum of fifty cubic feet shall be provided for each dwelling unit. These shall be of a type and design to provide secure storage, accessible from the ground level in the vicinity of resident parking stalls.