Many buyers purchase a new construction home because they wish to avoid issues found in aging homes such as outdated electrical or foundation issues. Unfortunately, even new homes can have issues.
Homebuilders often subcontract much of the work on the build of your home to a wide range of vendors. In addition, mistakes simply happen and even though you may have a home warranty, some issues may not be apparent until sometime in the future.
If a property has health and safety issues or has a flaw that will require a costly repair, you need to know about it sooner rather than counting on a warranty to address it later.