@Hello786
In your original question you mentioned "all 6 of the joint tenants" being listed at the closing. You and your two sisters are 3 of the 6. Who are the other 3 owners? Spouses of you and your sisters? But you said one of your sisters is not married. When and how did the other 3 become part owners? It's not clear whether you and your married sister were already married when you became part owners, or married afterwards. These are some important details that you haven't provided, and they might affect your quitclaim plan. But don't even bother to explain the details here. It's just more that you have to discuss with the tax professional.
