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Appendix: Proposed Regulations for Accessory Dwelling Units 914.010 Accessory Dwelling Units A.Accessory dwelling unit means a dwelling unit complying with the Minnesota State Building Code which is located within a principal single-family residential dwelling or in a structure detached from a single-family residential building. The types of accessory dwelling units include: 1.A dwelling unit attached to a principal residential dwelling. 2.A dwelling unit detached from the principal residential building but located on the same lot as the principal residential building. B.Zoning Districts: Accessory dwelling units shall only be permitted on parcels in the R-1, R-2 or R- 3 zoning districts that contain a detached one-unit building. C.Number: There shall be no more than one accessory dwelling unit permitted per lot. D.Minimum Lot Size: The minimum size of a land parcel eligible for an accessory dwelling unit, whether detached or attached, is shown in Chapter 904, Residential Districts. E.Occupancy: Occupancy of the single-family lot, including both the principal dwelling unit and the accessory dwelling unit, shall be limited to no more than one family and up to two persons who are boarders / roomers or reside in one of the dwelling units. F.Initial Relationship: The initial construction of an accessory dwelling unit shall only occur on a property that is occupied by the property owner as their primary residence. G.Sale: The accessory dwelling unit shall not be sold independently of the principal residential dwelling and may not be a separate tax parcel. H.Maximum Floor Area: Accessory dwelling units, whether attached or detached from the principal dwelling, shall equal no more than 40 percent of the gross floor area, not counting any garage space, of the single-family dwelling. I.Location: Detached accessory dwelling units may be located only in a rear yard. J.Setbacks for Detached Accessory Dwellings: 1.Interior lot line: The same as the minimum side yard setback for a principal dwelling in the zoning district. 2.Rear lot line: 15 feet 3.Principal dwelling: 10 feet K.Relationship to other Accessory Structures: 1.The total cumulative area of all accessory structures may not exceed 50 percent of the rear yard. 2.If there is a detached garage on the property, any accessory dwelling that is not attached to the principal dwelling may only be built above the garage. The floor area of such accessory dwelling may not exceed the floor area of the garage under it. Such accessory dwelling may have only one floor of living space. No window on the accessory dwelling may face a side or rear lot line when the adjacent parcel is used as a single-unit residence. L.Building Height: There is no specific maximum height for a detached accessory dwelling. The height of such building will be limited to one story of conditioned living space with typical foundation and wall heights plus an attic with a pitched roof. M.Exterior Appearance: An accessory dwelling unit, whether detached or attached, must look like a smaller version of the principal dwelling on the parcel. That is, the materials, colors, roof pitch,