However, Too much faith in "average" numbers, keep in mind that the only house that you really care about is the one that you are about to build. Home prices of $55, $66, $72, $80, $84, $92, $110, $118, and $328 per square foot combine to produce an average of $112 per square foot, which is probably a reasonable figure for many areas of the country. However, the difference between the lowest figure and the highest is very substantial. While professional builders may be able to average their profits and loses over several projects, the typical homeowner or owner-builder probably cannot. So, regardless of how you finally come up with the numbers, be sure to take the time to review your finances, prepare a reasonable budget, and produce an accurate construction estimate for the specific home that you are about to build.