If that is, in fact, what you are asking there usually are steps taken, ( ie) a power of attorney that imposes an executor to the will of the estate holder. That executor acts as if he were the original seller. They will list the property, if that is the desired effect, as if they were the owner, make decisions pertaining to said transaction and sale negotiations. Because this person is put in "charge" of the estate. Or named prior to it being instituted, the estate attorney will handle all legal proceedings, they will verify to the courts that no probate decisions will be enforced. They are treated as the owner, long before, or at the time instituted.
If that is NOT what you are asking, please feel free to call me directly or send me an email I'd be more than happy to help in anyway that I can.
from the buyer's perspective, it is pretty much the same as any other real estate transaction.
for the estate / seller, the biggest difference is that the person (persons) acting on behalf of the estate must prove that they have authority to do so.
if there is a probate estate in court, the seller must either present a court order approving the sale or present other evidence from the probate court to prove that court approval is NOT required.
if there is no probate estate, the title insurance company will have other requirements.
as always, consult a lawyer to get a more detailed answer to your question