In the 10 years that Wendy Arriz has been a real estate agent in New York City, she’s seen some of the best, selling ultraluxe new-construction homes, as well as lower-priced properties. But she’s ...

Construction started on this house three years ago. The builder poured the foundation and put on the first-floor subfloor and then abandoned the job. A month ago, the walls and roof finally went up.