Requires explosive gas detectors to be installed in certain residential properties.

This bill requires owners of residential properties with fewer than three units (like single-family homes or duplexes) to install either explosive gas detectors or dual-function carbon monoxide/explosive gas detectors before selling, leasing, or changing occupancy. It mandates that local authorities verify compliance through certificates of occupancy, with exemptions only if no gas or carbon monoxide hazard exists. The detectors must meet specific safety standards (ANSI for gas, UL for carbon monoxide), and owners who fail to comply face a $100 fine. The law applies to initial occupancy changes and new leases, not existing occupied properties.