Mo. Rev. Stat. § 384.017: Nonadmitted insurers, purchases from allowed, when.

Surplus lines insurance may be placed by a surplus lines licensee if:

(1) Each insurer is an eligible surplus lines insurer;

(2) The full amount or kind of insurance is not obtainable from admitted insurers who are actually transacting in this state the class of insurance required by the insured. Insurance shall be deemed obtainable within the meaning of this section if there is available a market with admitted insurers that can supply the insured's requirements both as to type of coverage and as to quality of service. "Type of coverage" , as used in this section, refers to hazards covered and limits of coverage. "Quality of security and service" , as used in this section, refers to the rating by a recognized financial service; and

(3) All other requirements of sections 384.011 to 384.071 are met.