Anecdotal of course, but in my new construction community in 92011 around 75 of the 123 homes are built. We’ve gotten to know at least 20+ owners, I would say 50% of them relocated from out of town. On my block alone, we have SF, DC, and Denver. There’s also LA, Minnesota, goes on and on.
Could be skewed if out-of-towners overwhelming buy new construction, especially when it was sold from the priority list, which makes the purchase process easier from afar in my opinion.