In a nutshell, what you may "save" now you will end up paying "at least" 3 times over whenver you sell or otherwise dispose of the property. Additionally, if your primary residence is in the LLC and a tenant of one of the other properties sue you and win, you can potentially lose your primary residence too. In the past a rental dwelling policy was actually cheaper than an homeowner's policy because it only covered the structure. But that has been slowly changing over the last few years where a rental policy is about 10-20% more than a homeowner's policy.
Then there's the "offset" costs of needing two insurance policies - one to cover the property and another to cover the possessions. If your state offers a homestead exemption, you lose that which means you pay more in property taxes. Matters can be further complicated if your state taxes personal income.
Overall, I would suggest you seek professional help in your local area, as that so-called "veil of protection" offered by an LLC is so thin, it's a joke. You'd be more successful carrying a clutch of bowling balls in a wet paper bag.
Unless it's a multi-member LLC I always recommend against putting residential rental into a single member LLC. It's a waste of time since rentals generate passive income that gets reported on SCH E.
