The biggest piece of advice is do everything possible ahead of time. Make sure any Will or Trust is rock solid. Make sure deeds and things are located and filed safely away. Anything possible.

It toook my wife's family an extra year to sell her grandpa's house because a wealthy greedy aunt wanted more money and was pissed she was being excluded from getting anything from the house. Getting things down in a proper will would have cut a lot of that off ahead of time instead of proving that grandpa intentionally excluded the greedy daughter. They also then found out they were missing a few documents (I don't remember everything, wanna say a marriage certificate they needed to prove some stuff to county with) so just make sure you have all of that possible now. If you can get your name on things I'd imagine it would make it even easier but not sure.

Your SK's ham radio club can come do inventory of all the amplifiers, tuners, radios and antennas that cover every inch of the attic. They'll even auction it off and hand you the profits.

Not about the house but about the parents.

Mine also stayed independent far longer than we thought prudent. We kids lived far away. But it seemed like they had it together when we talked on the phone. We ensured they had meal boxes delivered and a person to come help clean up & check on them 1-2x/week.

Only after they both rapidly deteriorated and were moved to care facility did I get to really check things out. OMFG. The paper towels in the freezer. The stacks of unpaid bills. Mom's wedding ring which we accidentally found in an old shoe. And so on.

Dont have any Will clauses that permit preferential selling to a family member before liquidation. Hard deadlines, or just don't.