Sheesh! Sounds like you were married before the house was built, meaning you went through it together. Agree with your future ex to work together to find out how to pay the least amount of taxes and split the proceeds. Sounds like you are trying to pay the lowest tax AND take more proceeds. I agree with adding up as much basis as you can support, pay the taxes split the profits and start your new life. I remember how you are feeling when I went through my divorce but sounds like you are setting yourself up for disappointment and divorce lawyer fees come to an agreement and give half.
