7 Mistakes General Contractors Make with Commercial Umbrella Insurance

Commercial umbrella insurance fills the gap when a liability claim exceeds your underlying policy limits. Most general contractors either skip it or buy it without knowing what they actually have. Neither is a good position to be in when a serious claim lands.

Farmer Brown has placed contractor insurance across all 50 states for nearly 30 years. The same errors come up constantly. Here is what to watch for.

Mistake #1: Thinking your general liability limits are enough

A standard GL policy runs $1 million per occurrence and $2 million aggregate. That coverage disappears fast.

One bad job-site injury can result in medical bills, lost wages, rehab costs, and damages that exceed $1 million. If a judgment exceeds your policy limit, your business assets make up the difference.

Smaller contractors often assume umbrella coverage is for bigger operations. It is not. A single slip-and-fall or equipment failure can generate a claim that exceeds a standard GL policy limit, regardless of company size.

Mistake #2: Missing the gap between your underlying limits and what an umbrella requires

Umbrella carriers set minimum requirements for underlying policies before issuing a policy. If your current coverage falls below those thresholds, you have a gap that nobody will mention until you file a claim.

Most umbrella carriers require at least $1 million per occurrence on general liability, $1 million combined single limit on commercial auto, and specific minimums on employer’s liability. Contractors who buy umbrella coverage without verifying those numbers can end up personally on the hook for any shortfall.

Before purchasing, pull every underlying policy and confirm that the limits meet the umbrella carrier’s requirements.

Mistake #3: Treating excess liability and commercial umbrella as the same thing

They are not.

Excess liability follows your underlying policy exactly. If the primary policy excludes a claim type, the excess policy excludes it too. It just adds more of the same limits.

Commercial umbrella coverage can pick up claims your underlying policies do not cover at all. It also typically sits over multiple primary policies at once, covering GL, commercial auto, and employer’s liability under a single policy.

For a contractor with liability exposure across multiple job sites, that distinction matters. Know which product you are actually buying.

Mistake #4: Buying exactly what a contract requires and nothing more

A commercial client wants $5 million in total liability coverage. The contractor buys $5 million and stops there.

Contract minimums protect the project owner. They are not a coverage assessment for your business.

Most small contractors pay between $500 and $2,500 per year for $1 million in additional umbrella coverage. Going above a contract minimum typically costs less than expected. A catastrophic bodily injury claim or a multi-party lawsuit can hit seven figures. The math on extra coverage usually works in the contractor’s favor.

Mistake #5: Waiting until after a claim to get coverage

Carriers check claims history when deciding whether to offer a policy and what to charge for it. A contractor with a clean record has options. A contractor who just closed a large claim may find coverage more expensive or harder to obtain.

The window to buy umbrella insurance at favorable rates is before it is needed, not after.

Mistake #6: Assuming the umbrella covers everything

It does not.

Most commercial umbrella policies exclude professional liability, so a separate errors and omissions policy is required. Intentional acts, pollution liability, and certain employment practices claims are also commonly excluded. Damage to your own work or property typically falls outside umbrella coverage as well.

The umbrella policy works alongside your other coverage. It is not a substitute for it. You can read the exclusions before you need to learn them from an adjuster.

Mistake #7: Shopping on price alone

Umbrella insurance price depends on coverage limits, underlying policy limits, claims history, and the type of work performed. A lower premium can mean lower limits, higher deductibles, or tighter terms.

Carriers also differ in how they handle claims. A policy that costs more but pays reliably is worth more than one that fights every claim to keep its loss ratio clean.

Contractors who work with agents who know construction liability, including Farmer Brown’s team, can compare options across multiple carriers instead of taking the first quote that comes in under budget.

How to get it right

Check your underlying limits before buying. Confirm GL, commercial auto, and employer’s liability all meet the umbrella carrier’s minimums.

Base your coverage on your actual exposure, not a contract number. Factor in what a serious injury claim, property damage lawsuit, or multi-year legal defense would realistically cost.

Read the policy before you sign it. Ask your agent to walk through the exclusions.

Buy before you have a claim on record. It is cheaper and easier.

Could you work with someone who specializes in contractor risk? A generalist agent can miss details that matter in construction.

Get the coverage right

A single catastrophic claim can undo years of work. Commercial umbrella insurance is one of the more affordable ways to prevent that, and most contractors pay less for it than they expect.

Farmer Brown’s team works with contractors across all 50 states and typically responds within one business day.