Legally speaking, if you have agreed to an installment sale, I'm not sure if the stepped-up basis is applicable.

At which point am I legally allowed to relist the property for rent again?

Here is a reference that explains:https://www.nolo.com/legal-encyclopedia/intestate-succession...2.

Selling or Transferring the Deed: Legally, the husband can transfer or sell his ownership interest without needing the wife’s permission, as she is not listed on the deed.

Like most states, Georgia gives you the legal right to enter for inspections, repairs, or showings.

Have your attorney send your contractor a letter explaining your dissatisfaction, any legal, ethical, or moral violations his operating methods result in, and making him an offer BELOW your “target” amountbest of luck I have an attorney that I considered speaking with on this matter, but I’m not sure that he specializes in things like this.

It's primarily a legal protection vehicle and should be advised upon by a lawyer in most circumstances.

If you need financial help, ask under the "Finance, Tax, and Legal" forum.

Should I first consult with an attorney to discuss my options, or can I move forward directly with legal action?

You've got legal issues plus a whole bunch of other stuff.