From a tax perspective, the type of ownership for the commercial building (whether personal or LLC) will not affect the type of gain when you sell it. Either way, you'll deal with the mess of depreciation recapture and capital gains. If you're using the house as a personal residence, then I see no benefit to having it in an LLC (I do see some reasons not to).
If it is all one parcel, you may have a mess having the real estate in an entity while using a part of it for personal use. There would be some mildly-complicated cost segregating and self-rental going on.
Liability would be the main issue, in which case I always suggest a lawyer.