All lots or parcels created by the subdivision of land shall have access to a public street improved to standards hereinafter required. Access to a public street(s) by easement for up to four lots in a subdivision and for subdivisions of up to four lots plus a remainder lot may be permitted. For subdivisions proposing lot access to a public street by easement, the configuration proposed would be as follows: Each lot shall have an access and utility easement appurtenant to the next up-street lot; a twenty foot wide private driveway shall serve the lots and a single maintenance agreement shall be prepared and recorded. Private streets shall not be permitted except in planned unit development zones. If the planning commission finds that the most logical development of the land requires that lots be created in planned unit development zones which are served by a private street or other means of access; and makes such findings in writing with the reasons therefor; then such access may be recommended to the city council by the planning commission. The city council may act to approve or disapprove the private street at the time it approves the unit development plan or the tentative map. The subdivider shall submit a development plan showing the alignment; width; grade and material specifications of any proposed private street; the topography and means of access to each lot; drainage and sewerage of the lots served by such private street; and a plan satisfactory to the city council for ownership and maintenance of the street and the liability for taxes thereon. Construction of an approved all-weather private street access shall be completed prior to issuance of any building permit on lots served by a private street. (Ord. 1994 NCS §6, 1995; Ord. 1372A NCS §2, 1979; Ord. 1046 NCS §1 (part), 1972; prior code §22.7.300.)