Read Article AUBURN — The City Council unanimously approved two measures Monday aimed at encouraging development and rehabilitation in downtown areas. The zoning ordinance changes will expand a form-based code district known as Traditional Downtown Neighborhood to a swath of the downtown and New Auburn, from Riverside Drive to Ninth Street and parts of Broad and South Main streets. Officials say the move better fits the character of the neighborhood and will make it easier for building owners to construct additions or renovate. Form-based code, which is relatively new for Auburn, has been increasingly used nationwide as a way of regulating land development to achieve a specific urban form, and is seen as a way to curb urban sprawl and the deterioration of historic neighborhoods.