In most instances, the price range in your challenge will decide the kind of development to be undertaken for the new home. If you might be buying raw, undeveloped land in a rural setting, you might have to add a septic tank on your wastewater needs. You will also need to run utility lines back to your property, and possibly think about the cost of grading the land and laying a driveway.
We had a home built many years ago so I know just how fast the decisions come. One other suggestion, if cash is an issue, is to think about what objects that you can add now that would be too expensive to try to add later. For instance, you wish to put within the windows now as an alternative of attempting to add windows later, that type of thing.