Partnership Structure | 2 Duplexes

[Brice Craig]

Hello,

We're working on an interesting partnership structure involving (2) duplexes that are on the same property. It is likely that we will subdivide the property and split the (2) units into separate properties so we will each own (1) duplex. 

I am in charge of putting together a rough outline of what the partnership structure will be before we get a lawyer involved to make it official.  The other side of the deal has an interesting question. What if they want to move and sell the property down the road but don't want to put it on the open market?

Is there a good way to structure the deal so that the other side of the deal is required to purchase the property should the other owner want to sell? Would it be standard that the other side is able to purchase the property back at the original value or would it be for the estimated fair market value? I don't think it's fair to have to purchase the property back if the other side wanted to sell a year later and it had appreciated tremendously. 

Any thoughts or experiences would be great! Thanks!