When selecting a real estate attorney ask if they charge a flat fee for the purchase or sale of the house or if they charge by the hour. If they are charging by the hour remember that is not just the hours you are personally working with the attorney, it is any time he or she or their staff is working on your transaction.
If you have a significant estate than includes more than one property, you should hire an attorney who specializes in real estate law. They can provide sound advice about taxes, mortgages, and the like, and can prepare your estate for transfer once you pass away.