Every person owning or entitled to possession, under any lease, sublease, or agreement for a longer period than one year, or under any renewal lease, sublease, or agreement for a period of less than one year, of any building heretofore constructed shall, within six months following the effective date of this chapter, install and provide the safety devices as provided for in this chapter, and thereafter maintain such safety devices in good condition. Any person failing to install or provide and maintain said safety devices as provided for in this chapter shall be guilty of a misdemeanor.