Hi, Three years ago my step daughter purchased a house. The deed and mortgage are in her name only and she paid all solicitors costs etc. Her de facto partner of 7 years moved in and paid $600 a month rent (inconsistently) but paid no rates etc. They have terminated the de facto relationship 1 year ago. However, because of his behavior such as trashing the house, coming and going as he pleases (locks don't deter him) and threats of self harm etc, selling, reluctantly seems the best course of action, especially as I foolishly went guarantor. The ex seems to think that she requires his permission to sell as they had been de facto. She already believes the right thing to do is to pay him half of any profit from the sale like a property settlement. So my question is can she go ahead and sell without his permission?