Both are correct, in different contexts. Use "on" when referring to grounds or buildings, and "in" when referring to personal items like belongings. For example, They found oil on my property refers...
that reason is because when you mix some chemicals and colors you can get the property of paint or if you mess up the chemicals you could end up with something that is totally different that could be...
Inherited property is not generally considered community property. However, if the property is located in another state, the property laws in that state govern.