Drone Inspection Services insurance FAQ

Tower contractor insurance costs vary widely based on crew size, work type, claims history, and state. Typical annual ranges for a 10-person tower erection crew: GL without height exclusion ($15,000-$40,000), workers comp ($50,000-$150,000 depending on payroll and mod), umbrella to $5M ($20,000-$60,000), commercial auto ($15,000-$40,000 depending on fleet size), inland marine ($3,000-$8,000). Total program cost for a mid-size crew typically ranges from $100,000-$300,000 annually. Smaller maintenance crews (3-5 people) may fall in the $40,000-$100,000 range. These are typical ranges only and will vary by market conditions, experience mod, and loss history. The single largest cost driver is workers compensation, which is calculated on payroll at rates that can exceed $30 per $100 of payroll for climbing class codes in high-rate states. Companies with clean loss history and mods below 1.0 will be at the low end. Companies with claims, high mods, or operations in expensive states will be significantly higher. Annual premium as a percentage of revenue typically ranges from 8-15% for tower contractors, compared to 2-5% for most general construction.

Occurrence policies cover claims arising from incidents that happen during the policy period, regardless of when the claim is filed. Claims-made policies cover claims that are both made and reported during the policy period. For tower contractors, occurrence is strongly preferred for GL and umbrella because latent injury claims (such as a structural failure discovered years later, or delayed-onset health effects from RF exposure) may not surface until years after the work. Claims-made creates gaps if coverage lapses or is not renewed. Most MSAs require occurrence-form GL. Claims-made is more common for professional liability and pollution, where tail coverage handles the gap. If you are forced into a claims-made GL due to market availability, you must understand the retroactive date (claims from incidents before this date are excluded) and the need to purchase an extended reporting period (tail) if you ever cancel or non-renew the policy. Without tail coverage, claims reported after cancellation are uninsured even if the incident occurred during the policy period. For a tower contractor, this could mean a structural failure claim surfacing two years after you completed the work would be denied.

Primary and noncontributory is an endorsement wording that makes the named insured's policy respond first (primary) to a claim involving the additional insured, and prevents the carrier from seeking contribution from the additional insured's own insurance (noncontributory). Without this wording, the additional insured's carrier and the named insured's carrier may dispute which policy pays first or try to share the loss on a pro-rata or equal-shares basis. Turf vendors and tower owners require it so that their own insurance is never triggered by a subcontractor's work. The subcontractor's policy pays everything up to its limits before the additional insured's coverage is even considered. This is achieved through ISO endorsement CG 20 01 or equivalent proprietary language. The endorsement modifies the other insurance condition in the GL policy, which normally makes the policy excess over other available insurance for the same claim. With primary and noncontributory wording, the normal other-insurance provision is overridden for the benefit of the additional insured. Most specialty tower programs include this as standard. If your policy does not include it, the endorsement can usually be added for nominal or no additional premium, as it does not increase the carrier's aggregate exposure.

A blanket additional insured endorsement automatically extends additional insured status to any party you are contractually required to name, without issuing a separate endorsement for each project or MSA. For tower contractors working under multiple turf vendors simultaneously, blanket AI is essential because it ensures every MSA requirement is automatically satisfied when the contract is signed. The alternative, scheduled additional insured, requires issuing a new endorsement for each party, creating administrative gaps between contract execution and endorsement issuance. Most specialty tower programs include blanket AI with primary and noncontributory wording as a standard feature. The blanket endorsement typically references ongoing operations and completed operations, covering the additional insured both during and after your work. Some endorsements use ISO form CG 20 10 (ongoing) paired with CG 20 37 (completed operations), while others use a single blanket form. Confirm your endorsement covers both, as some MSAs specifically call out completed operations additional insured coverage. The trigger for blanket AI is a written contract requiring additional insured status, so always ensure your MSA or subcontract is fully executed before relying on the blanket provision.

A waiver of subrogation is an endorsement where your insurance carrier agrees not to pursue recovery (subrogate) against a specified party after paying a claim. In the MSA context, the turf vendor or tower owner requires you to add a waiver of subrogation in their favor on your GL, WC, and auto policies. This means that if your carrier pays a claim and determines the tower owner was partially at fault, the carrier cannot sue the tower owner to recover its payout. Without the waiver, the additional insured faces the risk of being sued by your own carrier after a loss, which defeats the purpose of being named as additional insured. Waivers must be in place before the loss occurs to be valid. Most carriers allow blanket waiver of subrogation endorsements that apply to any party required by written contract, similar to blanket additional insured. The cost is typically 2-5% of premium. For workers compensation, the waiver is particularly important because WC claims on tower sites often involve shared fault between the employer and the site owner. Without a WC waiver of subrogation, your WC carrier could pursue the tower owner for contribution, creating litigation that undermines the contractual relationship.