If you’re a contractor, you know the drill. You’re on-site, things are moving fast, and you have to make a call. The design shows an HVAC unit in one spot, but there’s a tangle of mechanical equipment right where it’s supposed to go. So, you use your experience, move it 10 feet over, and keep the project on track.
You just solved a problem. You also just stepped into one of the biggest—and most misunderstood—gaps in contractor insurance.
Most contractors I talk to assume their general liability (GL) policy is like a big, sturdy umbrella, protecting them from anything that could go wrong on a job. And in a way, it is. But that umbrella is full of holes, and you might not know it until the rain starts pouring.
The hard truth is that your standard GL policy is designed to cover property damage and bodily injury—think a dropped tool hitting someone or a wall collapsing. It was never built to cover the consequences of your professional judgment. And those on-the-fly decisions you make every single day? That’s exactly what we’re talking about.
“But I Already Have General Liability. Why Do I Need More?”
This is the million-dollar question. I hear it all the time, and it’s a perfectly fair one. You’re already paying for a hefty GL policy, so why should you have to shell out for professional or pollution liability, too?
I recently chatted with Kaitlyn Dudzinski, who’s the VP of Design and Construction Professionals at Westfield Specialty, and she put it perfectly. “This is one of the biggest questions that comes up,” she told me. “First and foremost, your general liability coverage is likely going to have an exclusion for any professional services that you provide.”
Think of your GL policy like this: it covers almost everything except for a specific list of things written in the fine print. And on that list, you’ll almost always find "professional services." It’s a standard carve-out, and it leaves a massive gap that many contractors drive their businesses right through without even realizing it.
What Exactly Counts as a "Professional Service"?
Okay, this is where most people get tripped up. When you hear "professional liability," you probably picture an architect or an engineer stamping a set of blueprints. You think, "That's not me. I'm a builder, not a designer."
But the insurance world sees it differently.
A "professional service" is any decision or recommendation you make based on your specialized skill, qualifications, and experience. Remember that HVAC unit we moved? That’s a perfect example.
“What I think contractors often overlook is how their delegated design decisions, value engineering, and field changes affect the overall design,” Kaitlyn explained. “They may move an HVAC system because mechanical equipment is in the way...effectively changing the design.”
You didn’t stamp a blueprint, but you used your professional expertise to alter the design. If that change later causes an issue—maybe the new location affects airflow, leading to a mold problem—the resulting claim would likely be denied by your GL policy. Why? Because the problem wasn't caused by faulty workmanship (a GL issue), but by a professional decision (a professional liability issue).
It’s a subtle but incredibly important distinction. You’re giving a professional opinion, and your GL policy just isn’t built for that.
Occurrence vs. Claims-Made: A Tale of Two Policies
Here’s another reason these coverages are separate. It comes down to how and when a claim is triggered.
Your General Liability policy is almost always "occurrence-based." This is pretty straightforward. It covers incidents that happen during the policy period, no matter when you actually file the claim. If a pipe bursts and floods a basement in June, the event "occurred" in June. Simple.
But Professional Liability is different. It’s typically "claims-made." This is because pinning down the exact moment an error happened is nearly impossible.
“It’s very difficult to cover professional liability on an occurrence basis because it’s hard to pinpoint when the error actually occurred,” Kaitlyn says. “Design work happens over time, with multiple changes made throughout a project, so it’s rarely clear exactly when the error was introduced.”
Because of this, a claims-made policy covers claims that are filed during the policy period. This brings up a whole new set of rules for reporting potential problems.
The #1 Rule for Reporting: When in Doubt, Let Them Know
With a claims-made policy, you can't afford to wait and see if a small issue blows up into a big one. You need to be proactive.
Let’s say a client mentions they’re unhappy with a design change you made. It’s not a lawsuit, not even a formal complaint, just a grumble. Your first instinct might be to handle it yourself and not "bother" the insurance company. That’s a mistake.
“What we tell contractors...is if you think that this could potentially be a professional liability claim, you should report it as a circumstance,” Kaitlyn advises. “All that means is you’re letting the insurer know something happened. You may not know anything else...but you’re putting them on notice.”
Now, I know what you’re thinking: "If I report every little thing, my premiums will go through the roof!"
It’s a common fear, but in the world of professional liability, it’s mostly a myth. Insurers expect this. They’d much rather know about a potential issue early on.
“Generally, that’s not the case in professional liability,” Kaitlyn confirms. It’s usually the paid claims that are more likely to impact your premium, and even then, an increase isn’t a sure thing. Sometimes, stuff just happens.
There’s no penalty for reporting a "circumstance" that never turns into a claim. But the benefit of reporting early is huge. The insurer can get involved, offer guidance, and start working with your GL carrier right away. They want to help you manage the situation before it spirals.
The Easiest Way to Protect Yourself on the Job
Beyond having the right policy, there’s a simple habit that can make a world of difference: get it in writing.
When you have to make a field change, document it. Better yet, get it signed off by the general contractor, supervisor, or the architect of record. It might feel like an extra step, but it creates a paper trail that can be your best defense.
Kaitlyn has seen this play out time and time again. “In those instances when it’s signed off by someone, the claim typically results in a lower payment, and it’s a much better outcome than when contractors just make the change.”
Choosing the Right Insurance Partner Is Half the Battle
So, you’re convinced. You need to look into professional and pollution liability. But where do you start? Not all insurance carriers are created equal, especially in these niche areas.
You need a carrier that truly specializes in both professional and pollution coverage for contractors. It’s a common problem to find a carrier that’s a rockstar in pollution liability but just dabbles in professional, or vice-versa.
“I think the most important factor...is whether it has experience in both the professional and the pollution side of things,” Kaitlyn says. An insurer with deep expertise in both disciplines will understand how these risks overlap and can build a policy that doesn’t leave you with unexpected gaps.
At Westfield Specialty, for example, they have dedicated experts for each side of the coin. Kaitlyn focuses on professional liability, while her colleague, Dennis Willette, is the head of Environmental. They bring their teams together multiple times a week just to talk through risks from both angles. That’s the kind of collaborative expertise you want in your corner.
You should also look for a carrier that strikes the right balance between standardized and custom solutions. You don’t want a one-size-fits-all policy that doesn’t fit your business, but you also don’t want something so complex that it takes months to underwrite. A good partner can be efficient while still tailoring coverage where it counts.
At the end of the day, this isn't just about buying another policy. It's about understanding the real risks your business faces every day. That quick decision to move an HVAC unit is what makes you a good contractor. Making sure you’re properly insured for it is what makes you a smart business owner.
