General Liability Insurance for Tower Contractors
General liability is the foundation of every tower contractor's insurance program. But standard GL policies contain height exclusions that void coverage for the work you actually do. Tower-specific GL eliminates those exclusions and protects against the real exposures of telecom construction.
Why standard GL fails tower contractors
Most commercial general liability policies include height exclusions — typically at 15, 25, or 50 feet — that effectively eliminate coverage for tower work. A standard GL policy purchased from a generalist agent may appear adequate on the certificate of insurance but provides zero coverage when a claim involves work above the exclusion threshold. This is the single most common coverage gap in the tower industry. Contractors discover the exclusion only after a claim is denied, when the financial exposure is already real.
What tower-specific GL covers
A properly structured GL policy for tower contractors covers third-party bodily injury and property damage arising from operations at any height. This includes dropped objects striking people or property below, structural damage to the tower or equipment during installation, damage to carrier equipment during antenna work, and injury to non-employees at the job site. The policy also covers completed operations — claims arising after the work is finished, such as an improperly installed antenna mount that fails months later.
Additional insured requirements
Every turf vendor and tower owner MSA requires the hiring party to be named as additional insured on your GL policy. This means your policy extends coverage to the company that hired you for claims arising from your work. The additional insured endorsement must be primary and noncontributory, meaning your policy pays first regardless of any insurance the hiring party carries. CG 20 10 and CG 20 37 endorsement forms are the standard. Some carriers and tower owners require manuscript endorsements with specific language.
Typical limits and structure
Tower contractor GL policies are typically written with $1,000,000 per occurrence and $2,000,000 general aggregate limits. Some MSAs require higher limits, which are achieved through umbrella or excess layers rather than increasing the primary GL. The policy should include products-completed operations coverage with a separate aggregate equal to the general aggregate. Per-project aggregates may be required for larger contracts to ensure that claims on one project do not erode limits available for other projects.
Common exclusions to watch for
Beyond height exclusions, tower contractors should review their GL for exclusions related to: work involving cranes or hoisting equipment, blasting (relevant for foundation work), underground utilities, EIFS or exterior insulation, subsidence, and professional services. Pollution exclusions are standard and require a separate pollution liability policy. Ensure the policy does not exclude independent contractors or subcontractor work, as most tower projects involve sub-crews.
How GL pricing works for tower contractors
GL premiums for tower contractors are based on revenue, payroll, or a combination. Rates vary significantly based on the specific work performed — tower erection carries higher rates than ground-level fiber work. Loss history is the primary driver of rate changes at renewal. A single large claim can increase premiums 30-50% or trigger nonrenewal. Carriers that specialize in tower and telecom typically offer more stable pricing because they understand the industry's loss patterns and do not panic-rate after individual claims.
Frequently asked questions
What is a height exclusion on a GL policy?
A height exclusion is a policy endorsement that eliminates coverage for bodily injury or property damage arising from work performed above a specified height, typically 15, 25, or 50 feet. For tower contractors who routinely work at 100-500+ feet, a height exclusion effectively voids all coverage for primary operations. Any GL policy for tower work must explicitly state that no height exclusion applies.
How much does general liability insurance cost for tower contractors?
GL premiums for tower contractors typically range from $15,000 to $60,000+ annually for $1M/$2M limits, depending on revenue, work type, crew size, and loss history. Tower erection and modification contractors pay higher rates than maintenance-only operations. Companies with clean loss histories and strong safety programs can negotiate rates at the lower end of the range.
Can I use a BOP instead of standalone GL for tower work?
A business owners policy (BOP) bundles GL and property coverage but is designed for low-risk businesses. Standard BOPs exclude contractor operations and work at height. While some carriers offer contractor-endorsed BOPs, they typically cannot meet MSA requirements for additional insured endorsements, primary/noncontributory status, and the specific coverage terms that turf vendors and tower owners require.
What does primary and noncontributory mean?
Primary and noncontributory means your GL policy pays first for covered claims before any insurance held by the additional insured (the hiring party). Your policy does not seek contribution from the additional insured's own coverage. This is a standard MSA requirement and is achieved through an endorsement on your GL policy, typically CG 20 01 or equivalent.
Does GL cover damage to the tower I'm working on?
GL covers damage to third-party property, which can include the tower and carrier equipment if you are a subcontractor working on property owned by the tower company or carrier. However, damage to your own property or property in your care, custody, and control may be excluded under standard GL. This gap is typically addressed through an installation floater or builder's risk policy.
Related coverage types
Coverage by work type
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