Major subdivisions involve the creation of new streets, the extension of municipal facilities or the creation of more than four lots. Major subdivisions may be approved for residential and nonresidential properties. Conveyance plats are considered major subdivisions if they create more than four lots or involve the creation of new streets or the extension of municipal facilities. The procedure for approving a major plat typically requires three steps: land plan, preliminary plat, and final plat. Land plans are approved by the planning and zoning commission. The land plan requirement may be omitted if the subdivision creates no more than one new street and the administrator determines that sufficient information exists to begin preparation of a preliminary plat. Land plans for nonresidential property may be omitted where the administrator determines that a circulation plan, site plan, etc., for the property contains sufficient information to provide for the proper coordination of the development.
Except as otherwise permitted, the planning and zoning commission’s approval of a preliminary plat is required prior to the construction of public improvements to the property. The preliminary plat and the associated engineering plans for the property may be amended during construction, with only major changes requiring reapproval by the planning and zoning commission.
Upon completion of the required public improvements, or the provision of a subdivision improvement agreement described under article XI, the owner may submit a corrected final plat and construction “as builts” for the subdivision. Lots may be sold and building permits obtained after approval of the plat by the planning and zoning commission, and filing of the signed plat. The preliminary plat process may be altered if the owner enters into a subdivision improvement agreement with the city and provides engineering plans and sufficient surety for all proposed public improvements.