<P> The state of New York took over when federal regulation ended in 1950 . Under the first permanent state laws in 1951, New York took a similar regulatory approach to the federal government . At the time there were about 2,500,000 rental units statewide, 85% of them in New York City . The initial laws covered all rental units, and regulated all relationships between owners and tenants concerning rents, services, and evictions . </P> <P> Into the 1950s, a severe housing shortage prompted the first deregulation of rental units . In New York City, apartments in single and two - family homes became deregulated after April 1, 1953 . Cities and towns outside New York City were given permission to deregulate when ready . The most expensive luxury apartments in New York City began to be deregulated starting in 1958 . By 1961, only New York City and 18 of New York's 57 other counties had rent regulation . </P> <P> New York City and the state government began dual administration of rent regulation in 1962, and 75,000 expensive apartments were gradually deregulated by 1968 . In 1969, construction and vacancy rates slumped, causing non-regulated rents to rise nationally . This rapid increase in rents caused New York to pass the Rent Stabilization Law of 1969, which introduced rent stabilization to units built after the 1947 cutoff for buildings to be eligible for rent control, covering approximately 325,000 units in New York City . </P> <P> The Local Law 30 of 1970 introduced a new method of rent control price calculation, based on the Maximum Base Rate, which adapted to the changing costs faced by landlords, allowing them to pass those costs on to renters . A 1971 law took away New York City's ability to regulate rents and gave the power to the state government, in Albany . </P>

What percentage of nyc apartments are rent controlled