Maryland State Finance and Procurement Section 13-102
§ 13-102.
CAUTION: READ FULL TEXT OF SECTION FOR SPECIAL NOTE
  (a)   Except as provided in Subtitle 3 and Subtitle 4 of this title, all procurement by units shall be by competitive sealed bids unless one of the following methods specifically is authorized:
    (1)   competitive sealed proposals under § 13-104 or § 13-105 of this subtitle;
    (2)   noncompetitive negotiation under § 13-106 of this subtitle;
    (3)   sole source procurement under § 13-107 of this subtitle;
    (4)   emergency or expedited procurement under § 13-108 of this subtitle;
    (5)   small procurement under § 13-109 of this subtitle;
    (6)   an intergovernmental cooperative purchasing agreement under § 13-110 of this subtitle;
    (7)   auction bids under § 13-111 of this subtitle; or
    (8)   an unsolicited proposal under § 13-107.1 of this subtitle.
  (b)   (1)   In awarding a procurement contract for human, social, cultural, or educational service, the preferred method is by competitive sealed proposals under § 13-104 of this subtitle.
    (2)   In awarding a procurement contract for a lease of real property, the preferred method is by competitive sealed proposals under § 13-105 of this subtitle.
    (3)   Procurement under an intergovernmental cooperative purchasing agreement is appropriate in situations where the State is expected to achieve a better price as the result of economies of scale or to otherwise benefit by purchasing in cooperation with another governmental entity.
// SPECIAL NOTE: THE ABOVE SECTION WAS CHANGED BY CHAPTER 482 OF 2002 AND WILL REMAIN IN EFFECT UNTIL SEPTEMBER 30, 2008 //
  (a)   Except as provided in Subtitle 3 and Subtitle 4 of this title, all procurement by units shall be by competitive sealed bids unless one of the following methods specifically is authorized:
    (1)   competitive sealed proposals under § 13-104 or § 13-105 of this subtitle;
    (2)   noncompetitive negotiation under § 13-106 of this subtitle;
    (3)   sole source procurement under § 13-107 of this subtitle;
    (4)   emergency or expedited procurement under § 13-108 of this subtitle;
    (5)   small procurement under § 13-109 of this subtitle;
    (6)   an intergovernmental cooperative purchasing agreement under § 13-110 of this subtitle; or
    (7)   auction bids under § 13-111 of this subtitle.
  (b)   (1)   In awarding a procurement contract for human, social, cultural, or educational service, the preferred method is by competitive sealed proposals under § 13-104 of this subtitle.
    (2)   In awarding a procurement contract for a lease of real property, the preferred method is by competitive sealed proposals under § 13-105 of this subtitle.
    (3)   Procurement under an intergovernmental cooperative purchasing agreement is appropriate in situations where the State is expected to achieve a better price as the result of economies of scale or to otherwise benefit by purchasing in cooperation with another governmental entity.