327.461. Every contract for architectural or engineering or landsurveying services entered into by any person who is not an architect orprofessional engineer or professional land surveyor, as the case may be,and who is not exempt from the provisions of this chapter, shall beunenforceable by the unlicensed or unauthorized person, whether incontract, quantum meruit or other legal theory, regardless of whether abenefit has been conferred.
(L. 1969 S.B. 117, A.L. 1999 H.B. 343)