What is a common issue found in older commercial buildings?

The presence of asbestos or lead-based paint in older commercial buildings is a significant concern due to the health risks associated with these materials. Asbestos was widely used in construction for its fire-retardant properties and insulation, while lead-based paint was commonly used prior to its ban in residential properties in 1978. Buildings constructed before this time may still contain these hazardous materials, posing serious health issues such as respiratory problems and lead poisoning, especially during renovation work if not properly handled.

In contrast, excessive noise pollution is more dependent on the location and design of the building rather than its age, while increased energy efficiency and modern wiring systems are characteristics more commonly found in newer constructions or in buildings that have been renovated to meet contemporary standards. Therefore, identifying asbestos or lead-based paint is crucial for safety and compliance reasons in older structures.