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Chapter 914: Specific Development Requirements Accessory Dwelling Units <br /> <br />914.010 Accessory Dwelling Units <br />A. Accessory dwelling unit means a dwelling unit complying with the Minnesota State <br />Building Code which is located within a principal single-family residential dwelling or in a <br />structure detached from a single-family residential building. The types of accessory dwelling <br />units include: <br />1. A dwelling unit attached to a principal residential dwelling. <br />2. A dwelling unit detached from the principal residential building but located on the same <br />lot as the principal residential building. <br />B. Zoning Districts: Accessory dwelling units shall only be permitted on parcels in the R-1, <br />R-2 or R-3 zoning districts that contain a detached one-unit building. <br />C. Number: There shall be no more than one accessory dwelling unit permitted per lot. <br />D. Minimum Lot Size: The minimum size of a land parcel eligible for an accessory dwelling <br />unit, whether detached or attached, shall be: <br />1. R-1 zoning district: 15,000 square feet <br />2. R-2 zoning district: 12,000 square feet <br />3. R-3 zoning district: 11,000 square feet <br />E. Occupancy: Occupancy of the single-family lot, including both the principal dwelling unit <br />and the accessory dwelling unit, shall be limited to no more than one family and up to two <br />persons who are boarders / roomers or reside in one of the dwelling units. <br />F. Initial Relationship: The initial construction of an accessory dwelling unit shall only occur <br />on a property that is occupied by the property owner as their primary residence. <br />G. Sale: The accessory dwelling unit shall not be sold independently of the principal <br />residential dwelling and may not be a separate tax parcel. <br />H. Maximum Floor Area: Accessory dwelling units, whether attached or detached from the <br />principal dwelling, shall equal no more than 40 percent of the gross floor area, not counting <br />any garage space, of the single-family dwelling. <br />I. Location: Detached accessory dwelling units may be located only in a rear yard. <br />J. Setbacks for Detached Accessory Dwellings: <br />1. Interior lot line: The same as the minimum side yard setback for a principal dwelling <br />in the zoning district. <br />2. Rear lot line: 15 feet <br />3. Principal dwelling: 10 feet <br />K. Relationship to other Accessory Structures: <br />1. The total cumulative area of accessory structures may not exceed 50 percent of the rear <br />yard. <br />2. If there is a detached garage on the property, any accessory dwelling that is not attached <br />to the principal dwelling may only be built above the garage. The floor area of such <br />accessory dwelling may not exceed the floor area of the garage under it. Such accessory <br />dwelling may have only one floor of living space. No window on the accessory <br />dwelling may face a side or rear lot line when the adjacent parcel is used as a single-unit <br />residence. <br />Page 914-2