Yes, it is commonly done with income property where the owner wants to segregate risk. (Where something happens to a property and the owner does not want the liability to extend down to him or to the other properties.) Here, the owner wants to protect the property from liability he has personally. If it is a wholly-owned LLC, it won't do this. At the very least, a charging order could be had. The creditor is not suing the LLC, they are suing the person for his personal liability. The collection of the debt is what goes against the LLC as it is one of the assets of the person.
People do a lot of things with winks and nods. If it works out, great. If not, look out. Making a fraudulent statement on your insurance application could be a problem. Not notifying your lender the property is no longer owner-occupied could be a problem. The capital gain advantage of personal residence ownership is lost.
I don't think someone who places their personal residence in a single-member LLC is going to get the advantage they believe they will. I also think the cost is fairly high with some risks. (Does this really have a business purpose?) On and on.
We have a number of very well off clients with a lot to lose. Since our speciality is real property/income property, these are sophisticated people in the area of real estate. None of them have placed their personal residence in an LLC. NONE. If for no other reason, that should give one pause to carefully consider the benefits/risks of the plan.