The property becomes marital property if you have contributed in anyway to its upkeep or payments of the mortgage etc..
Therefore, if your paycheck is paying for the mortgage or has paid for improvements etc.. then it has changed from separate property to marital property.
I think, the only exception to this is CA.
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SMILE - Start Making It Livable for Everyone
Divorce is a process over which children have no control. Children should not be its victims.
When parents are under stress, it is harder to be in touch with their children's pain and anguish.
It takes time, effort, and planning on the part of the parents to be able to provide for the children's needs.
In the crisis of divorce, parents may put their children on hold while they attend to adult problems first.
Sometimes separating/divorced parents find that their roles and expectations are undefined and cloudy.
If handled properly, divorce need not be devastating for children.