Construction Site Security: Why It Matters Construction site security is a growing concern for the industry. Theft, vandalism, and legal liabilities are not only eroding profits but also delaying projects and increasing insurance costs. Construction Site Security: The Cost of Theft Construction site security failures cost U.S. construction firms over $1 billion annually in losses from tools, equipment, heavy machinery, and materials  . Only about 15–20% of stolen items are ever recovered …