First off, it is generally a bad idea to go into partnership with family. Even if all of YOU get along great, in 20 years or 50 years somebody's kids will want to do one thing and the other kids will want to do another, and it can cause a LOT of problems. I've seen it first hand. That being said, if it's the only way to buy the property, and you're set on buying it, get a lawyer and be VERY VERY up front, and put into writing, how decisions will be made regarding the termination of the agreement, division of funds from timber or crop, and how the property will pass. Whether you will own as joint tenants with right of survivorship or as tenants in common. (meaning, can you pass on your share of the property at your death/sell your share, or will the property go equally to the other partners at your death). Think long term and put EVERYTHING in writing.