Thanks in part to legislation passed nearly a decade ago by Mayor Michael Bloomberg, New York City has become one of the best spots in the country to access free data in an easily accessible format, experts said. The city freely publishes more than 1,600 different sets of public information, including deeds, building violations, zoning codes of neighborhoods, and even every complaint logged to 311, that are constantly updated. “New York has the highest quality data and the most amount of data of any other location in the United States, and as far as I know the world,” said L.D. Salmanson, a co-founder of the real estate data platform Cherre. “They make it available to you in a way that’s really helpful to people.”

https://commercialobserver.com/2019/07/the-city-that-never-deletes-how-new-york-city-became-a-real-estate-data-mecca/