Okla. Stat. tit. 59, § 59-46.44
Unlawful to bid or hold financial interest in entities
competitively bidding.
It shall be unlawful for a registered commercial interior
designer, at any time, to bid or hold a financial interest in any
entity competitively bidding for a contract for the reparation,
alteration or erection of a building or other structure for which he
or she has prepared the plans and specifications unless the contract
is a design/build contract.