Commercial buildings face unique mold challenges due to complex HVAC systems, higher occupancy, and liability exposure to employees and tenants. Large air handling systems can distribute mold spores building-wide, affecting multiple floors or zones from a single contamination source. Facility owners and property managers must consider worker compensation claims, tenant health complaints, and potential litigation from mold exposure. Professional testing for commercial properties includes HVAC system assessment, multiple sampling points, and documentation that meets workplace safety standards. Unlike residential properties, commercial buildings often require ongoing monitoring programs and preventive maintenance protocols. Professional testing helps establish baseline conditions and identify problems before they impact business operations or create liability exposure.