Key facts: Oklahoma Statutory Probate Rules Code governs all procedures; $50,000 estate value limit determines simplified probate eligibility; 30-day waiting period required before estate distribution; mortgage liens survive death and attach to property; federal Garn-St. Germain Act prevents automatic loan acceleration on death; heirs may assume existing mortgages under original terms; foreclosure prevention protections apply during probate administration; executor must notify mortgage servicer of borrower's death.