The answer to 'DIY deck' is that building a deck yourself is a complex project that requires careful planning, construction skills, and attention to safety. While it is possible for experienced DIYers to build a deck, it's generally recommended to hire a professional landscaper or deck contractor for most homeowners.
Building a deck involves tasks like laying a proper foundation, installing support beams and joists, attaching the decking, and adding safety features like railings. It requires specialized tools, knowledge of building codes and permits, and an understanding of structural engineering principles. Attempting a DIY deck without the right skills and experience can lead to an unstable, unsafe structure that may not pass inspection.