This is a complicated and trick question. There is a distinction between equity entitlement and being able to sell a property with joint tenancy. State law will dictate who is entitled to what portion of equity depending on the situation. Is this a divorce situation? If there are two parties holding title and on the deed, they both have ownership interest. In which case, they both must consent to selling the property. Again, two different issues but I think you should consult an real estate attorney in your area since this is more of a legal questions. Sorry.