Agreement between 50/50 owners of a rental unit

[Nina V.]

Hi folks, 

I am closing on a property with my cousin and both of our spouses. Each family will own the property 50/50. In the process of coming up with a legal agreement between us, we cannot figure out how to address when we have differences on how to solve disagreements on repairs. For example one family wants to repair the roof and the other wants to replace it. Any suggestions appreciated.

Thank you!