This chapter provides for the division of the unincorporated territory of the county into parts, hereinafter designated as districts, within each of which the uses of land and buildings and the height and bulk of buildings and the open spaces about buildings are regulated as specified. It is adopted to promote and protect the public health, safety, peace, comfort, convenience and general welfare, and for the following more particularly specified purposes:

    A.    Implement the general plan of the county by guiding and regulating development;

    B.    To protect the character and stability of existing development, and to encourage orderly and beneficial new development;

    C.    To provide adequate light, air, privacy, and convenience of access to property, and to secure safety from fire and other dangers;

    D.    To prevent overcrowding the land and undue congestion of the population;

    E.    To regulate the location of buildings and the use of buildings and land so as to prevent undue interference with existing or prospective traffic movements on public thoroughfares. (Prior gen. code § 8-19.1)