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� • 6120.3300 Minnesota Rule Page 1 of 13 Minnesota Administrative Rules 6120.3300 ZONING PROVISIONS. Subpart l.Purpose.To manage the effects of shoreland and water surface crowding, to prevent pollution of surface and ground waters of the state, to provide ample space on lots for sewage treatment systems, to minimize flood damages, to maintain property values, to maintain historic values of significant historic sites, and to maintain natural characteristics of shorelands and adjacent water areas, shoreland controls must regulate lot sizes, placement of structures, and alterations of shoreland areas. Subp. 2. Residential lot size.All single, duplex, triplex, and quad residential lots created after the date of enactment of the local shoreland controls must meet or exceed the dimensions presented in subparts 2a and 2b, and the following: A.Lots must not be occupied by any more dwelling units than indicated in subparts 2a and 2b. Residential subdivisions with dwelling unit densities exceeding those in the tables in subparts 2a and 2b can only be allowed if designed and approved as residential planned unit developments under part 6120.3800. Only land above the ordinary high water level of public waters can be used to meet lot area standards, and lot width standards must be met at both the ordinary high water level and at the building line. The sewer lot area dimensions in subpart 2a, items D to F can only be used if publicly owned sewer system service is available to the property. B. On natural environment lakes, subdivisions of duplexes, triplexes, and quads must also meet the following standards: (1)Each building must be set back at least 200 feet from the ordinary high water level. (2)Each building must have common sewage treatment and water systems that serve all dwelling units in the building. (3)Watercraft docking facilities for each lot must be centralized in one location and serve all dwelling units in the building. (4)No more than 25 percent of a lake's shoreline can be in duplex, triplex, or quad developments. C. One guest cottage may be allowed in local controls on lots meeting or exceeding the duplex dimensions presented in subparts 2a and 2b if the controls also require all of the following standards to be met: (1)For lots exceeding the minimum lot dimensions of duplex lots, the guest cottage must be located within the smallest duplex-sized lot that could be created including the principal dwelling unit. (2)A guest cottage must not cover more than 700 square feet of land surface and must not exceed 15 feet in height. (3)A guest cottage must be located or designed to reduce its visibility as viewed from public waters and adjacent shorelands by vegetation, topography, increased setbacks, color, or other means acceptable to the local unit of government, assuming summer leaf-on conditions. https://www.revisor.mn.gov/rules/?id=6120.3300 9/15/2011