Good morning Molly,
In Montana, real estate transactions typically close at a Title and Escrow Company. In Helena, we use Helena Abstract and Title, First Montana Title, Rocky Mountain Title or Surety Title.
Usually the only parties present in the closing room are the Buyer or Seller along with the escrow officer, lender (for Buyer only) and the party's real estate agent. This does not mean that finding a good real estate attorney in not necessary - you may still want to consider having representation!