By Josh Barbanel and Will Parker

Landlord groups on Monday filed a U.S. constitutional challenge to New York’s rent regulations, alleging that state and city governments had, in effect, taken over nearly a million rent-regulated apartments with its new law.

The suit seeks to upend New York’s system of rent regulation that dates back to federal price controls during World War II. The new rent law makes it more difficult for apartment owners to increase rents and eliminates rules that allowed them to free up thousands of apartments from rent regulations.

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