A few preliminary questions:
1. When were you married?
2. Is the property subject to a mortgage? If so, have you made mortgage payments since you were married? If so, how much in total have you paid?
3. Have you made any improvements to the property or paid any property taxes since the marriage?
Why would you think forming an LLC would be beneficial? Have you considered the possibility that your interest in an LLC formed after your marriage would be considered marital property or that your spouse might have a marital interest in the LLC?
Transferring title from yourself to an LLC will not alter the characterization. You would be wise to consult with a local attorney, who will probably advise that you should have your wife sign off on the transfer and give up any marital interest she might have in the property. I'm not saying that she has a marital interest, but having her sign off on this would help remove all doubt. It will also address the issue regarding the LLC ownership.