If you owned your property jointly with your spouse, and they were your only Attorney, then your partner would not be able to sell your home. This is because Attorneys cannot make decisions which benefit themselves, and selling the house would not be viewed as them acting independently. In this situation the property would first need to be placed into a trust and then sold.
However, if you had appointed your spouse/partner and another Attorney, for example a son or daughter, then the two Attorneys together would be able to sell the property. Similarly, if only one Attorney had been appointed, but they did not own part of the house, then they would also be able to sell the property.