Under most commercial leases—and applicable building codes—the landlord is generally responsible for installing and maintaining fire protection, including smoke detector and sprinkler systems.
But commercial tenants are usually responsible for maintaining smoke and carbon monoxide detectors within their leased premises, including testing the devices regularly and changing the batteries when necessary. Commercial tenants also generally have a responsibility not to obstruct or hinder fire escape routes or to create or maintain fire hazards within the leased premises.
In Arizona, commercial landlords are typically responsible for the installation and maintenance of fire protection systems, such as smoke detectors and sprinkler systems, in accordance with commercial leases and building codes. On the other hand, commercial tenants have the duty to maintain smoke and carbon monoxide detectors within their leased spaces. This includes regular testing and battery replacement. Additionally, tenants must ensure that they do not obstruct fire escape routes and must avoid creating fire hazards within their leased areas. These responsibilities are often outlined in the lease agreement and are also subject to local fire codes and regulations that aim to ensure the safety and well-being of occupants and property.