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• • Chapter 82—Subdivision Regulations Sec.82-256.-Double-frontage lots,access to lots,and front/back lot divisions. (a) Double-frontage lots.Double-frontage and reversed-frontage lots shall be avoided except where necessary to provide separation of residential development from traffic arterials or to overcome specific disadvantages of topography and orientation. (b) Access from any arterial roadway.Lots shall not,in general,derive access exclusively from an arterial roadway.Where driveway access from any arterial roadway may be necessary for several adjoining lots,the council may require that such lots be served by a combined access drive in order to limit possible traffic hazard on such roadway.Where possible,driveways shall be designed and arranged so as to avoid requiring vehicles to back into traffic on any arterial roadway. (c) Front/back lot subdivisions.Flag lots and easement back lots shall not be created.Front/back lot divisions shall be allowed only in conjunction with the creation of an outlot to provide access from the back lot to the public or private road.Such outlot shall not be allowed as creditable lot area for either the back or front lots.Front/back lot subdivisions shall adhere to the following standards: (1) Applicability. a. Front/back lot divisions may be used when existing property dimensions are narrow and deep,such that lot width does not allow for a side-by-side lot split,but acreage is adequate to provide a front lot and a back lot without requiring an area variance when the area of the outlot access corridor is excluded. b. Front/back lot divisions may be used for individual lot splits but may not be used when subdividing a large parcel into numerous lots if creation of a back lot is merely a convenience to the developer rather than supported by unique site factors. c. A front/back lot division shall not be allowed when any existing residence on a neighboring property abutting the proposed access outlot is located nearer its affected side lot line than a distance equivalent to the zoning district required front yard depth. (2) Dimensional standards.Dimensional standards for back lots shall be as follows: a. Lot area shall be 150 percent of the zoning district requirement.Wetlands may be allowed as area credit for meeting the 150 percent back lot area requirement,as long as the back lot contains sufficient contiguous dry buildable land to satisfy the minimum acreage requirement of the underlying zoning district. b. Lot width measured parallel to the front or street lot line at the street yard setback line of a lakeshore back lot,or at the rear of the front yard setback line of a non-lakeshore back lot,shall meet the zoning district width requirement.The street yard or front yard for any back lot will be a yard starting where the narrow access outlot corridor ends and the lot begins.Lakeshore back lots shall meet the lot width standard at the shoreline,at the lakeshore setback line and at the street yard setback line. c. The depth of the required street yard or front yard shall be 150 percent of the zoning district front yard requirement. d. The required side yard and rear yard depths for back lots shall be 150 percent of the zoning district yard requirements.The required lakeshore yard of a lakeshore back lot shall meet the zoning district lakeshore yard requirements. (3) Dimensional standards for front lots.A front lot created as part of a front/back lot division shall meet all zoning district area,width and setback standards;except that the required side yard of the front lot adjacent to the access outlot shall be equivalent to the side street yard requirement for that zoning district. (4) Access requirements. a. Access outlots shall be 30 feet minimum width,and shall be wide enough to accommodate drainage,snow removal and screening without encroaching on neighboring properties. b. In approving front/back lot divisions,the city may require that both front lot and back lot share a driveway access within the access outlot if the council determines that creating an additional access to the existing street will be a potential safety hazard. c. Driveways within a back lot shall be located at least ten feet from the side or rear lot lines of adjacent lots. Page 17