Can a trustee of an irrevocable trust use trust money to pay off debt for the Grantor after his death when the debt was not

You appear to have several questions mixed up which makes it hard to respond. First of all, if an irrevocable trust was set up by a Grantor properly before the Grantor's death (as opposed to an irrevocable trust created due to the death of the Grantor), then the money of the cannot be used to pay a debt of the Grantor. This is because in the former case, the trust property is not the property of the Grantor, and thus is not subject to the Grantor's death. However, if the trust was created by the Grantor to transfer property when the Grantor already had the debt, and the transfer of the property caused the Grantor to no longer have sufficient assets to pay the debt, then the transfer into the trust could be attacked as a transfer to defraud creditors, and a court might order the trust to return the money so that the debt can be paid. If the debt itself was created illegally or was the result of elder financial abuse, that is a separate question that can only be resolved through the court system. Finally, your last sentence does not appear to be a question at all, so I am unclear what the purpose of the sentence is. If you are asking if a trustee of a special needs trust has the authority to sell a home in the trust, the answer is likely to be "yes." If the trustee is planning to sell the home, that suggest that there is not sufficient other money in the trust to maintain the home (such as paying a mortgage, taxes, insurance, etc) However, without more information, I cannot respond any further.