What is one reason that mold remediation can be costly?

Mold remediation can be costly primarily because of the need for extensive cleaning and repairing of damages. When mold is present in a building, it often indicates underlying moisture issues or damage to materials such as drywall, wood, and insulation. Effective remediation involves not only the removal of contaminated materials but also a thorough cleaning of affected areas to prevent mold from returning. This may include replacing structural elements, addressing water intrusion sources, and sanitizing air ducts—all of which require skilled labor, specialized equipment, and may necessitate building permits or inspections.

In contrast, limited availability of professionals could be a factor in some regions but does not uniformly apply, as various licensed professionals often exist in many markets. High demand for building renovations might indicate a general trend in construction but does not directly contribute to the specific costs associated with mold remediation. Finally, minimal impact on property value is unlikely because mold presence often decreases property value significantly, as buyers are usually wary of potential mold issues and remediation costs. Thus, option B accurately captures a core reason mold remediation can incur high costs.