When you purchase an existing home, you run the risk of obtaining low quality features and appliances that could need replacing in the near future. Therefore, many people prefer to live in custom built homes, as it allows them to design every part of the home individually, from the structure to the appliances. On that note, instead of looking for new homes for sale, many people have custom luxury homes built.
If you are interested in purchasing a newly built custom home, it is wise to have it inspected for damage and problem areas beforehand. Furthermore, custom homes are generally built with a variety of upgrades and choices that stock homes are not built with, so there is much more peace of mind involved with owning a custom home than buying a pre existing home.
At the end of the day, new custom homes actually comprise a portion of new homes for sale in many areas. For the most part, custom homes are mostly higher-end luxury homes valued at about $1 million or more, but custom homes can be any size or any price. In any case, a custom home is a great idea for someone looking to be extremely comfortable in their home and control every aspect of the structure and design. Great references here.