Contractor errors and omissions insurance: the claim where nobody got hurt

A general liability policy is built around injury to people and damage to property. The claim it was not built for is the one where neither happened: the sizing was wrong, the sequence was wrong, the drawing everybody built to was wrong, and the owner is out months and money. That is economic loss, and it is the line between general liability and contractors professional liability. If your business makes design or engineering decisions others build to, this is the policy for the part of the job you are paid to think about rather than the part you are paid to install.

The claim general liability does not answer for

Start with what the general liability form is for. The NAIC describes it as covering four categories of events a business can be held responsible for: bodily injury, damage to others' property, personal injury including slander and libel, and false or misleading advertising. The same NAIC page lists professional liability for errors and omissions among the risks that policy does not protect against (NAIC, small business insurance). That is not a gap anybody hid. It is the design of the form.

The practical version, for a contractor, is a test you can apply to your own last five disputes. Did somebody get hurt? Did something break? If the answer to both is no and the owner is still angry and still out money, you were looking at an economic loss, and general liability was not written to pay it. The duct run was undersized and the space will not hold temperature. The panel schedule was wrong and the tenant improvement failed inspection twice. The submittal that everybody coordinated to was based on a dimension nobody caught. Nothing on any of those jobs was damaged. Every one of them cost the owner money.

What contractors professional liability is

IRMI's glossary is short: contractors professional liability insurance is "a specialized policy providing coverage for a contractor's liability for design errors or omissions." IRMI adds that insurers often combine the coverage with contractors pollution liability, that each can be bought on its own, and that a policy may be written on an annual basis covering all operations or on a project-specific basis (IRMI, contractors professional liability insurance).

IRMI's expert commentary is where the useful detail sits. The coverage protects against "damages arising from the negligent acts, errors, and omissions related to the professional services performed by or on behalf of the insured," and the feature that makes it professional liability rather than a relabeled liability policy is what it pays for: "pure financial loss of third parties such as the economic damages related to delays, acceleration costs, lost income, remedial design, reconstruction," damages generally excluded from a standard general liability policy. The article's judgment on the forms that do not go that far is worth carrying into a quote conversation: a policy that covers only bodily injury and property damage, without the economic loss, does not really constitute professional liability insurance, because the injury and damage side is normally handled by endorsement on the general liability policy instead (IRMI, Jeff Slivka, "Dissecting the Contractors Professional Liability Policy").

Two structural notes follow from that. These forms are typically written on a claims-made basis, which means the policy that responds is the one in force when the claim is made rather than when the work was done. Retroactive dates and reporting provisions are therefore part of the coverage, not administration, and a lapse between policies can leave old work uninsured. And the definition of professional services in the form is doing more work than any other sentence in it: if your services are defined narrowly and you sell something broader, the gap is yours.

Trades that take on professional exposure without calling it that

A contractor building strictly to somebody else's stamped drawings has a small professional exposure. The exposure grows the moment your business makes a decision others rely on. Design-build and design-assist delivery is the obvious case, and so is construction management, where the service you sell is judgment about sequence, schedule, and coordination.

The less obvious cases are the specialty trades. An electrical contractor sizing service and feeders, laying out a panel schedule, or signing off on a load calculation is producing engineering, whatever the contract calls it, and in Texas that work runs through a licensed electrical contractor under a code the state adopts by rule; the electrician insurance page has the licensing side of it. A utility contractor locating, potholing, and setting depths is making calls that other trades and other owners build around, and a missed line is as likely to produce a delay claim as a damage claim; that trade is on the utility contractor insurance page. Mechanical contractors doing their own load and duct sizing are in the same position, and it is the reason contractors pollution liability and professional liability are so often quoted together for that trade, exactly as IRMI's glossary describes.

The question to ask about your own business is not what your license says. It is what your contracts promise. If a document leaving your office is something other people build to, you are selling a professional service.

Where it sits in the set

Professional liability sits beside general liability rather than replacing any part of it. Contractor general liability insurance still answers for the person hurt on your site and the property you damage, and its own most important exclusion concerns damage to your work rather than damage caused by your advice. Contractor workers comp insurance handles your employees. Contractor equipment insurance handles the gear. None of those pay an owner's delay costs.

The lines a contractor is commonly asked to carry, and the order they usually get bought in, are on the contractor insurance coverage overview. To start from your trade instead of from the policy, use the InsuredCrew home page.

Frequently Asked Questions

What is contractor errors and omissions insurance?

It is professional liability coverage written for construction. IRMI defines contractors professional liability as a specialized policy covering a contractor’s liability for design errors or omissions, and its expert commentary describes the coverage as responding to damages arising from negligent acts, errors, and omissions related to the professional services performed by or on behalf of the insured. The policy can be written on an annual basis covering all operations or project by project, and insurers often pair it with contractors pollution liability, though each can be bought separately.

How is it different from general liability?

By the kind of loss, not the kind of mistake. General liability answers for bodily injury and damage to other people’s property, and the NAIC states plainly that a general liability policy does not protect against professional liability for errors and omissions. What professional liability adds is pure financial loss suffered by a third party: IRMI names delays, acceleration costs, lost income, remedial design, and reconstruction as the economic damages generally excluded from a standard general liability policy. Nobody was injured, nothing was physically damaged, and the owner is still out real money.

Which contractors actually need it?

Contractors who take on a professional service, whether or not they call it that. Design-build and design-assist work is the clearest case. So is any trade that produces engineered layouts, load or sizing calculations, shop drawings the design team relies on, or a means-and-methods decision that others build to. Construction management is another. A trade that installs strictly to somebody else’s drawings has a much smaller exposure, which is why this coverage is rarely the first thing a small residential contractor buys and is routinely required of a design-builder.

What should I ask before buying a professional liability policy?

Start with whether the form actually covers economic loss. IRMI is blunt that policies limited to bodily injury and property damage without economic loss do not really constitute professional liability insurance, since a general liability endorsement is the normal route for the injury and damage side. Then ask how the policy is triggered and reported, since these forms are typically written on a claims-made basis, which makes retroactive dates and the reporting window part of the coverage rather than paperwork. Then ask whether the definition of professional services matches the services you sell, and whether the policy is annual or project-specific.