When you buy a new house, you hire an appraiser to compare nearby sales within a year, to determine the fair market value of your house at that time.
You can also hire an appraiser to compare nearby sales with the year you got married, to determine the fair market value of the house when you got married.
The method is the same, the data are different, but from the same county record database.
Sure, two spouses could hire their own appraisers, have a different valuation, if they can't agree on something, they'll spend money to fight it out, their business
