Community property includes income during marriage and property purchased during marriage.  Each spouse has a 1/2 interest in the community property.Separate property includes income prior to marriage or after the marriage ends, and property purchased prior to marriage or after the marriage ends. A spouse has no claim to the other spouse's separate property.Since the house was purchased during marriage, it is community property.  Since the house was purchased with income during marriage, it is community property. Your ex-wife has a one half interest in the house because it is community property.