1151.03  PURPOSES OF DISTRICTS.
   The purposes of the zoning districts shall be as follows:
   (a)   R1 Residential District.  The R-1 Residential District is established for the construction and occupancy of one-family dwellings with a density no greater than 0.67 dwelling units per acre.  Other permitted or conditional uses, as specified within this Code, and determined to be compatible with such dwellings, may also be established in this District.  The public utilities and facilities within the  District shall be designed to have no more than the capacity required to support the planned density.
      (Ord. 1999-156.  Passed 7-26-99.  Approved by voters 11-2-99.)
   (b)   R2 Residential District.  The R-2 Residential District is established for the construction and occupancy of one-family dwellings with a density no greater than 0.33 dwelling units per acre.  Other permitted or conditional uses, as specified within this Code, and determined to be compatible with such dwellings, may also be established in this District.  The public utilities and facilities within the District shall be designed to have no more than the capacity required to support the planned density.
      (Ord. 1999-156.  Passed 7-26-99.  Approved by voters 11-2-99.)
   (c)   R3 Residential District.  The R-3 Residential District is established for the construction and occupancy of detached one-family dwellings with a density no greater than 1.5 dwelling units per acre.  Other permitted or conditional uses, as specified within this Code, and determined to be compatible with such dwellings, may also be established in this District.  The public utilities and facilities within the District shall be designed to have no more than the capacity required to support the planned density.
      (Ord. 1999-156.  Passed 7-26-99.  Approved by voters 11-2-99.)
   (d)   R4 Residential District.  The R-4 Residential District is established for the construction and occupancy of detached one-family dwellings at a density no greater than 2.5 dwelling units per acre.  Other permitted or conditional uses, as specified within this Code, and determined to be compatible with such dwellings, may also be established in this District.  The public utilities and facilities within the District shall be designed to have no more than the capacity required to support the planned density.
      (Ord. 1999-156.  Passed 7-26-99.  Approved by voters 11-2-99.)   
   (e)   R5 Residential District.  The R-5 Residential District is established for the construction and occupancy of detached one-family dwellings and two-family dwellings at a density no greater than 3.89 dwelling units per acre.  The regulations of this District are also intended to accommodate the residential use of lots subdivided prior to June 28, 1962.
      The provisions of this Chapter shall apply to those properties designated within the R5 Residential District prior to November 2, 1999.  The Zoning Map shall not be amended to expand existing or to create new R5 Residential Districts
      (Ord. 1999-156.  Passed 7-26-99.  Approved by voters 11-2-99.)
   (f)   PD Planned Development District.  This District was established to recognize and accommodate in a unified development of at least 300 acres, creative and imaginative planned community design and to permit those innovations in the technology of land development that are in the best interest of the City.  In order to accomplish this purpose, it is the intention in establishing regulations for this District to permit:
      (1)   In a large scale planned development, a variety of dwelling types including single-family and multi-family dwellings and at a maximum density of two dwelling units per acre;
      (2)   The flexible spacing of lots and buildings in order to encourage:
         A.   The separation of pedestrian and vehicular circulation;
         B.   The conservation of natural amenities of the landscape;
         C.   The provision of readily accessible recreation areas and green space;
         D.   The creation of functional and interesting residential areas; and
         E.   The provision of a necessary complement of community facilities such as central sanitary sewer and central water supply systems.
   (g)   C1 Shopping District.  The C1 Shopping District is to permit the development of individual businesses serving the daily goods, services and recreational needs of the community in sites of less than five acres zoned commercial before February 28, 1972. 
   (h)   C2 Commercial Shopping District. The C2 Commercial Shopping District is established to encourage planned and integrated groupings of establishments which will offer retail convenience and comparison goods and provide personal and professional services for a community area.  A C2 District shall only be created on a single lot or on contiguous lots comprising at least ten (10) acres. 
   (i)   C3 Planned Community Shopping Center District.  This District is established to recognize and accommodate, in a unified development of a district of at least forty (40) acres, a creative and imaginative planned community center design that is in the best interest of the Municipality.  In order to accomplish this purpose, it is the intention in establishing the regulations for this District:
      (1)   To permit, in a large scale unified and planned development, a variety of separately operated commercial establishments in a functional and interesting manner;
      (2)   To permit the flexible spacing of buildings, fences, walls, roadways, walks, sidewalks, gardens, lawns, parking areas, and other such structures to encourage:
         A.   The separation of pedestrian and vehicular circulation;
         B.   The conservation of the natural advantages of the existing landscape; and
         C.   The provision of any necessary complement of community facilities such as central sanitary sewer and central water systems; and
      (3)   To permit the orderly development of the District in accordance with a general overall plan or concept which is in accord with the intent and objectives of this Zoning Code.
   (j)   I1 Manufacturing, Processing and Wholesaling District.  This District is established to accommodate light industrial uses in the fields of manufacturing, processing, wholesaling and distributing.  Inasmuch as the existing and planned character of Aurora is primarily residential, it is not the purpose of this District to accommodate heavy-type industrial establishments characterized by a higher degree of emission of smoke, odor, vibration, glare or other similar characteristics.
   (k)   T1 Overlay Transitional Commercial Service District.  This overlay District is hereby established to accommodate single family dwellings and limited office and commercial uses in existing single family dwellingswhere further extensive structural modification of the building is not being contemplated and in new structures compatible in design with single family dwellings.  It is recognized that the overall area which comprises the District is in transition from a predominantly single family neighborhood to one now bordered by institutional, commercial, office and multi-family land uses and that the establishment of limited office and commercial uses within the District may be appropriate.  It is further recognized that existing residentially zoned properties possess significant architectural and historic amenities which are worthy of preservation.  The uses permittedor conditionally permitted in this District are to be limited in their scope, thus prohibiting those activities which generate significant parking and high volumes of traffic which are detrimental to a semi-residential area.  The underlying zoning district uses, requirements, standards and regulations shall remain in full force and effect.
   (l)   O1 Office District.  The O1 Office District is established for the construction and operation of office uses, together with limited commercial uses supportive of and compatible with office activity, in an area which features attractively designed buildings on landscaped sites and provides effective buffering of impacts where adjacent to residential areas.
      (Ord. 1999-156.  Passed 7-26-99.  Approved by voters 11-2-99.)