If this is rental property that was reported on SCH E in the past, then you'll report the sale in the rental section. This is generally true if the last occupant of the property prior to the sale was a tenant. If the last occupant of the property prior to the sale was the owner, or if the house was converted to personal use a good period of time before the sale, then the property will be reported in one of two other places.
If the property was your primary residence for at least two of the last 5 years you owned it, then you qualify for the capital gains tax exclusion on any gain realized on the sale. Report it in "Sale of Home (Gain or Loss)" So that you will be asked questions about the exclusion. Otherwise, report in Sale of Business Property. (I'm not sure, but I don't think Sale of Business Property will ask about the exclusion.)
