Engineering firm insurance is dominated by professional liability — Insureon shows engineer PL averaging $197/month. The GL ($39/month) is moderate, but PL reflects high-dollar design liability for engineers who sign and seal drawings.
Most engineering firms pay about $39 a month for general liability and $197 a month for professional liability, based on Insureon's figures for its own customers.
Price is one part of it. Our engineers insurance guide covers which policies you need and why.
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Engineer Insurance Cost Breakdown
Premiums from Insureon's 2026 engineer cost data for its own customers (Insureon calls them averages; its method note describes median premiums):
| Coverage | Average Monthly | Average Annual |
|---|---|---|
| General liability (GL) | $39/mo | $472/yr |
| Commercial auto | $231/mo | $2,766/yr |
| Professional liability (E&O) | $197/mo | $2,365/yr |
Related Guides for Engineer Insurance
For an independent breakdown of which carriers actually write engineer insurance well in 2026, see our carrier comparison.
For the coverages engineering firms need and what insurers ask before they quote, see our engineers insurance guide.
What Drives Engineer Insurance Cost Up or Down
- Discipline (civil, structural, mechanical, electrical, software, environmental)
- Firm size and annual gross billings
- Project size and total construction value (for design engineers)
- Whether you sign and seal drawings (raises premium meaningfully)
- Claims history
- State (CA, NY, FL more expensive for design E&O)
How to Lower Your Engineer Insurance Cost
- Use NSPE or AIA contract documents for design services
- Document client decisions, change orders, and design rationale
- Maintain PE license in current standing
- Bundle GL + property + cyber, separate professional liability with a design-specialist carrier
- Quote design-specialist carriers (Victor, Berkley DP, Travelers Design Professional)
Frequently Asked Questions
How much does engineer insurance cost?
Per Insureon's 2026 data, general liability averages $39/month ($472/year), commercial auto runs $231/month, professional liability averages $197/month. Total premium depends on revenue, employees, state, and claims history.
What insurance do I need as a engineer?
Most engineering firms need: general liability (often bundled into a business owners policy), commercial auto for any vehicles in the business, professional liability (E&O) if you provide advice or deliverables. The specific mix depends on your operations, employee count, and any contractual requirements from clients or vendors.
How long does it take engineering firms to get insurance quotes?
It depends on how many policies engineering firms need and how quickly you can supply the details. Chubb says a basic online quote often takes only a few minutes for a simple business. Commercial auto needs each vehicle's VIN and each driver's license and driving record. Professional liability usually needs a short application about the services you provide and any past claims. Having these details ready is the fastest way to get quotes; see what you need for a business insurance quote.
Should engineering firms buy insurance direct or through an agent?
Either can work for engineering firms. Buying direct from an insurer online suits a simple business that needs one or two policies. An agent or broker who compares several insurers helps most when you run business vehicles, because you are buying several policies at once. Neither route is cheaper by default: each insurer prices its own business types and states, so comparing quotes is the only way to know.
Why is engineering professional liability more expensive than architect?
Engineers who sign and seal drawings carry concentrated liability — a single calculation error in a structural drawing or a missed code requirement can produce catastrophic claims. Insureon shows engineer PL averaging $197/month vs $150 for architects. The discipline matters: structural engineers and geotechnical engineers typically pay more than mechanical/electrical engineers who don't deal with life-safety calculations.
Do engineers need cyber liability insurance?
Increasingly yes. Engineering firms handle proprietary client design data, BIM models, and project specifications that have significant business value. Insureon shows engineering firms paying $84/month average for cyber. A ransomware attack on an engineering firm's project files can halt work for weeks. Many corporate clients now require cyber coverage in vendor contracts.