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By Edita Abrudeanu, Founder & Principal Broker — Professional Insurance Experts, LLC
Does Architect Professional Liability Insurance Cover Subcontracted Engineers?
Your structural engineer makes the mistake.
Your client sues you.
Whose professional liability insurance responds?
Welcome to one of the more misunderstood parts of architects professional liability insurance.
Because hiring an outside engineer doesn’t necessarily mean you’ve hired away the liability.
In many cases, you’ve done something very different:
You’ve hired someone to perform work that you may still be responsible for delivering to your client.
And that distinction matters.
A lot.
01. The Short Answer
Does an architect’s professional liability policy cover work performed by a subcontracted engineer?
Potentially—but not in the way many architects think.
Your professional liability policy may provide coverage for your firm’s liability arising from professional services performed by a subconsultant on your behalf, depending on the policy wording, your contract and the circumstances of the claim.
That does not necessarily mean the engineer is insured under your policy.
Those are two very different things.
Think:
Coverage for your liability because of the engineer’s work.
Not necessarily:
Coverage for the engineer.
Let’s make this real.
02. The $8 Million Building and the Structural Engineer
Imagine you’re the architect on an $8 million commercial project.
Your agreement with the owner says you’ll provide architectural and engineering services.
You don’t employ a structural engineer.
So you hire one.
Everything looks fine.
Until construction begins.
Then someone discovers a structural design problem.
Correcting it costs $600,000.
The owner isn’t particularly interested in your organizational chart.
The owner hired you.
So the claim comes against your architecture firm.
Your response?
“But the engineer made the mistake.”
Maybe.
But that doesn’t necessarily get you out of the claim.
If you retained the engineer as your subconsultant, you may have liability to your client for the professional services you contracted to provide.
Now your professional liability policy becomes extremely important.
03. Isn't the Engineer Supposed to Have Their Own Insurance?
Absolutely.
And this is where I see architects occasionally make a dangerous assumption.
They think:
“My E&O covers me, so I’m fine.”
Or:
“The engineer has E&O, so I’m fine.”
Neither statement is enough.
Ideally, you want both firms properly insured.
Your architecture firm should have professional liability insurance appropriate for its operations and its use of subconsultants.
And your engineering subconsultant should carry its own professional liability insurance with appropriate limits.
Why?
Because if the engineer causes the loss, there should be insurance sitting behind the engineer too.
That’s important not only for the engineer.
It’s important for you.
04. What If My Engineer Doesn't Carry Professional Liability?
Now things get interesting.
Same $600,000 structural claim.
Except this time your engineer has:
No professional liability insurance.
The owner sues your architecture firm.
Your carrier defends you, assuming the claim otherwise falls within your coverage.
But who’s standing behind the engineer?
Nobody.
Maybe the engineering firm has enough assets to pay a substantial claim.
Maybe it doesn’t.
Maybe it’s a two-person operation with a laptop, an LLC and considerably less than $600,000 sitting around.
That’s not something I’d want to discover after the claim.
This is why requiring professional subconsultants to maintain their own E&O isn’t just another insurance requirement to throw into a contract.
It’s risk management.
05. Should My Engineer Carry the Same Limit I Do?
Often, that’s a very good starting point.
If your architecture firm carries:
$2 million professional liability
but your structural engineer carries:
$250,000
you should at least ask yourself why.
Especially if the structural engineer is responsible for a significant portion of the project’s design exposure.
The appropriate limit depends on the project, contract, services and potential severity of a claim.
But here’s the question I would ask:
If this consultant makes a serious mistake, is their insurance limit actually meaningful relative to the exposure they’re creating?
That’s a much better question than:
“Do they have insurance?”
Technically, $100,000 is insurance.
That doesn’t mean $100,000 solves your problem.
06. What If the Engineer Contracts Directly With the Owner?
Different situation.
Suppose the owner hires:
You — Architect
and separately hires:
ABC Structural Engineering — Structural Engineer
Now ABC isn’t your subconsultant.
They’re the owner’s consultant.
That can materially change the liability picture because you didn’t contract to provide ABC’s engineering services.
But don’t stop reading there.
You can still create liability for yourself through coordination responsibilities or through an overly broad contract.
If your agreement says you’re responsible for coordinating everyone’s work, reviewing everything, discovering every error or guaranteeing the accuracy of another consultant’s documents, you may have created obligations you didn’t need to assume.
The contract matters.
A lot.
07. “But They're an Independent Contractor.”
This phrase doesn’t magically eliminate professional liability.
Architects sometimes tell me:
“They’re a 1099.”
Okay.
That tells me something about the business relationship.
It doesn’t necessarily answer the insurance question.
The important questions are:
What services are they performing?
Who contracted with them?
What did you promise the client?
What does your professional liability policy define as professional services?
How does the policy address independent contractors and subconsultants?
What does your contract say you’re responsible for?
Insurance claims aren’t decided by what everybody casually called the relationship.
They’re decided by the actual facts, contracts and policy language.
08. Is the Engineer an “Additional Insured” on My Professional Liability Policy?
Usually, that’s the wrong question.
Additional insured status is something architects commonly encounter with general liability insurance.
Professional liability works differently.
The important issue is generally whether your liability arising from professional services performed through subconsultants is covered, not whether every engineer you hire gets added to your professional liability policy as an additional insured.
That’s another reason architects shouldn’t assume their GL and professional liability policies work the same way.
They don’t.
09. Here's the Part Architects Really Need to Understand
Let’s change the example slightly.
A structural engineer makes a design error.
The owner sues:
The architect.
The architect says:
“The engineer screwed up.”
The engineer says:
“No. The architect gave us incorrect information and failed to coordinate the drawings.”
Congratulations.
Now everyone has lawyers.
This is much closer to how real professional liability claims can develop.
Responsibility isn’t always obvious on Day 1.
That’s why you don’t want an insurance structure that only works if everyone politely agrees about whose fault it was.
You want both firms appropriately insured.
10. Your Subconsultant Agreement Matters Too
Don’t spend all your time negotiating the owner contract and then send your engineer a two-page agreement you found six years ago.
Look at things like:
- Scope of services
- Standard of care
- Indemnification
- Limitation of liability
- Insurance requirements
- Professional liability limits
- Retroactive/prior acts coverage
- How long coverage must be maintained
- Responsibility for consultants
- Dispute provisions
- Flow-down provisions from the prime agreement
And here’s a particularly important one:
Don’t give your client rights against you that you can’t reasonably pass down to the consultant actually performing the work.
Otherwise, you can end up holding liability that has nowhere else to go.
11. What Should You Ask Your Insurance Broker?
If your architecture firm regularly uses outside engineers, don’t simply ask:
“Do I have E&O?”
Ask:
Does my professional liability policy cover my firm’s liability arising from professional services performed by subconsultants?
Then tell your broker what you’re actually doing.
For example:
“We’re an architecture firm. Approximately 20% of our annual billings represent structural, MEP and civil engineering services subcontracted to outside engineering firms. All subconsultants maintain their own professional liability insurance.”
Now we’re having a useful insurance conversation.
Because the carrier can actually understand the exposure.
12. And Tell the Underwriter Too
This isn’t something I’d try to hide from an insurance company.
Quite the opposite.
If you use professional subconsultants, explain your controls.
Tell the underwriter:
- What percentage of work is subcontracted
- What disciplines are subcontracted
- How consultants are selected
- What insurance limits you require
- Whether certificates are collected annually
- Whether written contracts are required
- Whether your contracts include appropriate indemnification
- How consultant work is coordinated and reviewed
Remember:
An underwriter isn’t necessarily scared because you use subconsultants.
They’re trying to understand whether you manage the exposure intelligently.
There’s a big difference.
13. So, Does Architect Professional Liability Cover Subcontracted Engineers?
Here’s the answer I’d give one of my architecture clients:
Your professional liability policy may cover your architecture firm’s liability arising from professional services performed by an engineering subconsultant on your behalf, depending on the policy wording and circumstances.
But that doesn’t mean you should rely on your policy as the engineer’s insurance.
Your engineer should generally maintain their own professional liability coverage.
And you should make sure:
Your policy works.
Their policy works.
Your contract with the client works.
Your contract with the engineer works.
Because when a $600,000 design claim arrives, that’s a terrible time to discover those four things don’t fit together.
Before Your Next Project, Check the Subconsultant Exposure
If your architecture firm uses structural, civil, mechanical, electrical or other engineering subconsultants, don’t wait for a claim to find out how your professional liability policy treats them.
Send us your current professional liability policy and tell us how your firm uses outside consultants.
We’ll help you identify the questions worth asking before the project starts.