If you are POSITIVE there is no 1099-S, you do NOT need to enter it.
However, in some cases a 1099-S is buried in the closing paperwork, so it is often suggested to report it in case a 1099-S does exist (if a 1099-S exists and you don't report the sale, you will get an IRS notice).
From a tax standpoint, it is perfectly acceptable and common to report the home sale, even if it not required.
