Unless required by the city council, bidding and other requirements of this chapter shall not apply to professional services. Such services shall include, but not be limited to, the following: physicians, attorneys, engineers, architects, and similar professions. [Code 2006 § 3-4-7. Ord. 98-10, 5-12-1998; Res. 98-27; Ord. 2005-11, 9-27-2005; Ord. 2007-19, 12-11-2007].