US Construction Site Theft Doubles in One Year, Insurers on Alert

Theft Wave Strikes U.S. Construction Sites

The number of break-ins at active U.S. commercial construction sites almost doubled in a single year, according to a joint report by jobsite security firms TrueLook and Noonlight. Their data, drawn from more than 170,000 monitored alarms, shows there were 2,639 incidents in 2025, compared with just 1,750 the year before.

The crimes follow a strikingly predictable pattern. More than 40% occurred over the weekend, and the peak window was overnight between 11 p.m. and 3 a.m. The report also identified seasonal spikes: April break-ins started to rise, likely due to warmer weather and longer daylight hours, and the peak construction season from July through December saw an overall climb in thefts.

Thieves are targeting laydown areas and storage containers loaded with high-value materials — copper wire, lumber, and roofing supplies. Heavy equipment with keys left inside is also a common target. The most frequent entry method isn't sophisticated: a truck simply drives through an unsecured or unlocked gate.

"Unlocked or unsecured gates are the most common enabler of construction site theft," the report states. Sites that combined physical controls like gates, locks, and lighting with cameras, strobes, sirens, and active monitoring that enabled real-time response fared significantly better. The findings also highlight a rising concern over insider theft — the most frequently flagged after-hours activity by monitoring teams involved credentialed workers with legitimate site access.

What the Surge Means for Insurers and Contractors

A Hardening Market for Construction Insurance

The near-doubling of jobsite theft represents a material deterioration in loss experience for builders’ risk and inland marine policies. For property/casualty insurers active in construction, a persistent rise in frequency and severity will pressure loss ratios and likely trigger underwriting adjustments. Carriers may respond with higher deductibles, reduced coverage for materials left in Conex boxes, or outright exclusions for theft from unlocked sites. Some may demand proof of active monitoring as a condition of coverage.

The report’s finding that unlocked gates are the dominant enabler gives insurers a clear lever: they can tie premium credits or binding conditions to specific security protocols. That shift is already visible in related lines such as warehouse and logistics insurance, where real-time surveillance has become table stakes for competitive terms.

Seasonal and Behavioral Patterns Shape Risk Models

For insurers and large general contractors with internal risk management, the predictability of the theft patterns is both bad and good news. The concentration of incidents on weekends and between 11 p.m. and 3 a.m. means loss mitigation can be focused rather than spread thin. Seasonal spikes — a Spring kickoff in April followed by sustained elevation through year-end — allow for timed security investments. The fact that the most common entry is simply a truck driving through an unlocked gate suggests many losses are preventable with rudimentary controls.

From a pricing perspective, these patterns can be baked into actuarial models, but they also create moral hazard risk: sites that fail to adopt basic measures may be viewed as willfully exposed, potentially leading to coverage disputes or subrogation actions by insurers after a loss.

Insider Threat Challenges

The acknowledgment that after-hours activity by authorized employees is a significant source of incidents adds another layer. It complicates the traditional risk transfer because standard crime policies may have carve-outs for employee theft, and builders’ risk forms may not clearly address it. For insurers, this means either tightening policy wordings or carving out a separate fidelity-type requirement. For contractors, it signals that pre-employment screening and access logging are no longer optional but directly tied to recoverability of a loss.

Practical Steps to Protect Jobsite Assets and Curb Losses

Drawing directly from the report’s data and recommendations, here are concrete measures that reduce theft and may influence underwriters:

• Secure storage containers: Upgrade Conex boxes with steel hasps and puck locks — the primary targets for copper wire, lumber, and roofing supplies.
• Remove equipment keys: Heavy machinery with keys left inside is a top target; establish an end-of-shift key removal protocol.
• Install motion-activated lighting and cameras with active monitoring: Sites with a combination of physical barriers, strobes, sirens, and real-time response teams saw the lowest break-in rates.
• Mandate gate checks at shift close: Unlocked or unsecured gates are the most common enabler; assign a supervisor to confirm closure and lock.
• Log all after-hours access: Require detailed sign-in, supervision, and camera coverage for any credentialed employee entering after hours to deter insider theft.
• Integrate security into insurance applications: Contractors should proactively share installed security measures with brokers, as insurers increasingly price and underwrite based on verifiable loss prevention controls.