Does the right of first refusal make my contract voidable?

If the right of first refusal was a significant inducement for you to enter into the lease, and you had no knowledge that anyone else had a right of first refusal on the same property, then you could terminate the lease. You would also have the right to sue the landlord, if you pay rent and Which exceeds Fair-market value, because The excess rent would be credited against the purchase price, or for damages, if your purchase option price was less than the fair market value.

Generally, the first right of refusal actually written will tend to prevail. I do not understand however what you are questioning. The fact that the first right of refusal in your contract is secondary to a previous one may or may not be a material breach. You are going to have to confer with an attorney.