Mo. Rev. Stat. § 535.300

Security deposits, limitation — holding of security deposits, requirements — return of deposit or notice of damages, when — withholding deposit, when — tenant's right to damages — security deposit defined. — 1. A landlord may not demand or receive a security deposit in excess

Mo. Rev. Stat. § 535.300

Provision allowing award of twice the security deposit for wrongful failure to return deposit does not apply to tenants of commercial property. PDQ Tower Services, Inc. v. Adams, 213 S.W.3d 697 (Mo.App