Coverage Gaps to Check After Buying an Engineering or Surveying Firm

The first gap to check is the seam between general liability and professional liability: a plan or survey error that hurts someone or damages property can fall between them. Four more are easy to miss: drones, project files that live on a server, instruments that ride in a truck, and a spoofed email that changes a payee's bank details. Each is usually found in the forms and endorsements behind the declarations page. This guide is for the buyer of a design or survey practice who has already confirmed the core policies exist (the after you buy guide covers that) and now wants to know what a program built for the seller's operations may not cover under your ownership.

Which gaps should a new owner of an engineering or surveying firm check?

The table lists the gaps worth checking. Whether your policies have each one depends on the forms and endorsements, so use the third column as a to-do list.

The retroactive date and the tail, which decide whether the seller's old work is covered, are covered in the after you buy guide.

Does professional liability cover an error that hurts someone or damages property?

Not necessarily, and this is the central trap in the line. Reference sources describe errors and omissions coverage as designed for financial loss rather than bodily injury and property damage. The standard general liability exclusion for engineers, architects and surveyors can remove the same event from the other policy. Whether a given professional policy responds depends on its own wording, and the policy label will not tell you.

Ask your broker for a plain written answer to three questions. Does the insuring agreement respond to damages from bodily injury or property damage that result from a covered professional error? Do defense costs reduce the limit? Can the carrier settle without your consent? Do not accept a verbal reassurance, because the policy wording controls.

A hypothetical example. An engineering firm provides construction-phase observation on a retaining wall. After a failure, the contractor sues the engineer for negligent inspection and claims $400,000 for rebuilding and delay. The firm's general liability policy carries the engineers, architects or surveyors exclusion, so the dispute turns on the professional liability policy: whether its wording reaches property damage and delay costs, whether the claim is within the retroactive date, and how much of the limit defense costs use. The buyer, reading the policy for the first time after the claim arrives, learns the answers too late to change them.

What are the records, data and payment fraud gaps?

A design or survey firm's drawings, field books and project files are its inventory and its defense file. The long period during which old work can produce a claim means you need them for years after delivery. Valuable papers coverage, a kind of inland marine insurance, pays the cost to reconstruct damaged or destroyed papers and records. It typically leaves out money and securities, and electronic data and media are commonly left out too, so paper field books may be protected while the server is not.

The standard business income form covers interruption of computer operations from corrupted data only up to $2,500 per policy year unless the policy shows a higher limit. For a firm whose work product is largely electronic, that default is small. A cyber policy or a data extension can fill it. See the cyber review guide for how to read that policy.

Payment fraud sits in the same corner. In 2025 the Federal Bureau of Investigation's Internet Crime Complaint Center logged about 24,800 business email compromise complaints with roughly $3 billion in reported losses, across all industries. A firm that pays subconsultants and vendors by transfer is exposed, and social engineering coverage is often sublimited (capped at a lower amount inside the policy) below the main crime limit. The guide on funds transfer fraud explains the wording to look for.

Are drones, instruments and vehicles covered?

Drones. Mapping and site survey work often uses them. The Insurance Services Office publishes an optional general liability endorsement, "Exclusion, Unmanned Aircraft". It removes bodily injury, property damage and personal and advertising injury arising from the ownership or use of any unmanned aircraft. The form lookup notes that insureds who fly drones will generally need separate aviation coverage. Narrower versions exist, and so do endorsements that restore coverage for designated drones. Whether your policy has any of them is a wording question. Ask who flies for the firm and whether the pilot paperwork is on file; the contracts, licenses and bonds guide covers the certificate itself.

Instruments and computers. Equipment that leaves the office is mobile property, not office contents. Ask whether it is scheduled, whether it is valued at replacement cost or actual cash value, and what the policy says about theft from an unattended vehicle. See the equipment review guide and the glossary page on actual cash value vs replacement cost.

Vehicles. A crew on public roads needs auto liability and, if staff use personal cars on business, hired and non-owned auto coverage, which protects the firm's liability and does not repair an employee's own car. The page on hired and non-owned auto explains it.

How do I find and fix the gaps in an inherited program?

A declarations page lists limits and forms, but the exclusions sit in the forms and endorsements behind it. The guide on declarations pages vs full policies shows why that matters.

1. Ask the seller's broker or the carrier for the complete policies, including every endorsement, not just the declarations pages.
2. List every endorsement by title and mark any that exclude professional services (the engineers, architects or surveyors exclusion), unmanned aircraft, pollution or contractual liability.
3. Compare the list with how the firm really operates: services sold, stake-out along roads, mapping flights and construction observation, instruments owned and subconsultants hired.
4. Read your largest client contracts for insurance requirements and compare them with the policies. The guide on exclusions that quietly kill coverage helps with the reading.
5. Write down each mismatch, who can fix it and by when.

Fixes come in three forms. An endorsement can add or restore coverage, for example for designated drones. A separate policy can fill a larger hole, such as aviation, cyber or a stand-alone policy for environmental consulting. A changed habit costs little: call back on any change of bank details and keep an offsite copy of project files. Any new terms depend on carrier underwriting.

Morrow can run this comparison against inherited policies, flag gaps and request quotes where it makes sense. A quote is not coverage until a carrier binds it.

Which gaps are not insurance problems?

Some of what a new owner worries about cannot be closed with a policy. If the only person who qualifies the firm to practice leaves, no property or liability policy replaces them. That is a deal and transition risk, covered in the contracts, licenses and bonds guide. If a client leaves when the selling owner does, that is a business risk too. What it costs to close the real gaps is the subject of the cost drivers guide.

Keep reading

• Just Bought an Engineering or Surveying Firm? What Insurance Do You Need?
• What Drives Insurance Cost for an Engineering or Surveying Firm?
• What You Inherit With an Engineering Firm: Contracts, Licenses, Bonds
• New Owner Review: Professional Liability (Errors and Omissions)
• Insurance Exclusions That Quietly Kill Coverage
• All guides for new business owners

Frequently asked questions

Which coverage gap should I check first after buying an engineering firm?

Start with the seam between general liability and professional liability. General liability is often endorsed to exclude professional services, and whether a professional policy responds to bodily injury or property damage from an error depends on its own wording. Ask your broker to read both forms.

Does my general liability policy cover a drone?

Not if it carries an unmanned aircraft exclusion, which is an optional endorsement on standard general liability forms. Separate aviation coverage is often needed for drone work. Check your policy wording and ask who holds the pilot certificate.

Is my electronic project data insured?

Often not under valuable papers coverage, which typically leaves out electronic data. The standard business income form also limits computer data interruption to $2,500 per policy year unless a higher limit is shown. A cyber policy or data extension may fill the gap.

Will a cyber policy cover a payee change scam?

It depends on the wording. Social engineering losses often fall outside basic computer fraud or funds transfer fraud coverage, and coverage that does exist is commonly sublimited. Ask whether the policy includes fraudulent impersonation and what the sublimit is.

How do I check what the seller's policies exclude?

Ask for the complete policies with every endorsement, then list each endorsement by title. A declarations page shows limits but not most exclusions.

References

• IRMI: Errors and Omissions Insurance
• insurancexdate.com (third-party form lookup, not ISO): CG 22 43, Exclusion, Engineers, Architects or Surveyors Professional Liability
• insurancexdate.com (third-party form lookup, not ISO): CG 21 09, Exclusion, Unmanned Aircraft
• IRMI: Valuable Papers and Records Coverage
• FBI Internet Crime Complaint Center: 2025 Internet Crime Report
• Insurance Services Office: Business Income (and Extra Expense) Coverage Form CP 00 30 10 12, section A.5.d (copy hosted by Merlin Law Group)

This article is general information, not legal, tax or financial advice, and not a coverage determination. Coverage depends on the actual policy wording, carrier underwriting, your purchase agreement and your contracts. Ask your attorney and accountant about deal and legal questions.