Seeking to increase transparency in the luxury real estate market, the de Blasio administration has imposed new disclosure requirements on shell companies buying or selling property in New York City.

The changes will help remove a “veil of secrecy” surrounding high-end real estate sales by requiring that the names of all members of a shell company buying or selling property be disclosed to the city, the finance commissioner, Jacques Jiha, said.

Mr. Jiha said he was spurred to make the changes partly by a series of articles in February in The New York Times that examined the growing use of limited liability companies in real estate transactions, particularly in high-end real estate in New York, a market that has become less and less transparent and increasingly alluring for foreign buyers. A number of the apartments examined by The Times were bought, using shell companies, by international buyers who have been the subject of government inquiries around the world, either personally or as heads of companies.

In all, more than half of New York condominium sales above $5 million last year were to limited liability companies, which can be established in many states without disclosing the names of the actual, or “beneficial,” owners.