delivered the opinion of the Court.
In 1940 appellant constructed a four-story building on the Bowery in New York City and since that time has operated it as a lodging house. It was constructed so as to comply with all the laws applicable to such lodging houses and in force at that time. New York amended its Multiple Dwelling Law 1 in 1944, 2 providing, inter alia, that lodging houses “of non-fireproof construction existing prior to the enactment of this subdivision” 3 should comply with certain new requirements. 4 Among these was the installation of an automatic wet pipe sprinkler system. Appellant received notice to comply with the new requirements and thereupon instituted this suit in the New York courts for a declaratory judgment holding these provisions of the 1944 law unconstitutional and restraining their enforcement.
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The bill alleged that the building was safe for occupancy as a lodging house and did not constitute a fire hazard or a danger to the occupants; that it complied with all building laws and regulations at the time of its construction ; that part of it was fireproof and that the rest was so constructed as not to be dangerous to occupants; that the regulations existing prior to 1944 were adequate and sufficient to prevent loss of life in lodging houses of this particular type. It was further alleged that this lodging house has a market value of about $25,000, that the cost of complying with the 1944 law would be about $7,500; and that the benefits to be obtained by the changes were negligible. By reason of those circumstances the 1944 law was alleged to violate the due process clause of the Fourteenth Amendment. It was also alleged to violate the equal protection clause of the Fourteenth Amendment since it was applicable to lodging houses “existing” prior to the 1944 law but not to identical structures erected thereafter. Appellee answered, denying the material allegations of the bill, and moved to dismiss. The Supreme Court granted the motion. The Appellate Division affirmed without opinion.
Little need be said on the due process question. We are not concerned with the wisdom of this legislation or the need for it.
Olsen
v.
Nebraska,
Appellant’s claim of lack of equal protection is based on the following argument: The 1944 law applies only to *84 existing lodging houses; if a new lodging house were erected or if an existing building were converted into a lodging house, the 1944 law would be inapplicable. An exact duplicate of appellant’s building, if constructed today, would not be under the 1944 law and hence could be lawfully operated without the installation of a wet pipe sprinkler system. That is said to be a denial of equal protection of the laws.
The difficulty is that appellant has not shown that there are in existence lodging houses of that category which will escape the law. The argument is based on an anticipation that there may come into existence a like or identical class of lodging houses which will be treated less harshly. But so long as that class is not in existence, no showing of lack of equal protection can possibly be made. For under those circumstances the burden which is on one who challenges the constitutionality of a law could not be satisfied:
Metropolitan Casualty Insurance Co.
v.
Brownell,
Affirmed.
