Key facts: Federal Garn-St. Germain Act prevents mortgage acceleration upon inheritance by devise or descent; Massachusetts imposes no state inheritance tax on real property; 30-day waiting period mandated under MA Statutory Probate Rules Code; $50,000 estate value threshold determines applicable probate procedures; heirs may disclaim inherited property through proper legal channels; mortgage servicer notification required upon death of borrower; property taxes and insurance become heir responsibility upon inheritance.