If your spouse dies and your house is in your name via community property change are you then responsible for debts incurred by the deceased spouse?

I am not certain what you mean by "community property change", unless it pertains to a divorce decree. If you live in a community property state, and the debts were incurred while you are married. The spouse is indeed responsible for those debts. In non-community property states the person who contracted the debt, is the only person responsible. Therefore, the debt(s) usually "die" with the deceased person. There are exceptions, however, some states have laws which make the spouse responsible if the debts are defined as "necessities". Such as medical expenses, food, shelter, etc.