Legal Question in Real Estate Law in Illinois

Illinois law (735 ILCS 5/17‑101) allows for partition of lands held in joint tenancy and in tenancy in common. You don't say exactly how you own the 1/3. Theoretically if you hold your interest as a tenant in common, you should be able to sell outright without consent and without first offering it to the other owners. But since any buyer would not want to walk into a rat's nest (and a minority position to boot), you may have to file a partition action, but note that the 1/3 interest may have far less value than the 3 parts put together? Talk to an attorney -- making rumblings about filing a partition action may just force some settlement that could include a reasonable "partnership" agreement. And please note: I'm not sure what the effect of your having offered the other owners a right of first refusal of sorts may be, however - that's the kind of thing that may help the other 2 prove there was some kind of "oral" partnership that prohibited sale of any partial interest without their consent....and there may be other courses of dealing that add to that....and may require more extensive legal research we can't do here with your finite set of facts - so you are well advised to seek out a lawyer to review what the complete picture is, what you have done, and help you before further actions are taken that could impair your own position!!! Good luck.