The Mountain Preserve Zone (MPZ) as designated on the Mariposa County Land Use Map, is applied to lands that are suitable for extremely low density residential development due to terrain and lack of accessibility. These lands are under private ownership within or adjacent to publicly owned lands, with brush and grass cover, and some timber.

1. Development standards for the MPZ. Development standards for the MPZ shall be as follows:
   1. Uses:
      1. Permitted uses: Residential, non-commercial recreation, and those applicable uses listed under Chapter 17.108.
      2. Administrative use permit uses: Small scale mining in compliance with applicable standards and regulations pursuant to section 17.108.110.
      3. Conditional uses: Employee housing; private schools, except as permitted by Section 17.108.060(I); and mining, which may include mineral or construction material processing, in conformance with the State Surface Mining and Reclamation Act and county code.
      4. Prohibited uses: All uses listed in section 17.108.200 of this title and other uses not listed above are prohibited, except similar uses in compliance with section 17.108.120 and 17.108.030 of this title.
   2. Minimum parcel or lot size: No parcel of real property in the MPZ shall be divided or split into two (2) or more parcels by voluntary transfer, court action or other conveyance where any one (1) of the parcels so created will be less than one hundred sixty (160) acres or a legal quarter section in gross area.
   3. Density: Two (2) single family residences per one hundred sixty (160) acres or a legal quarter section.