Professional Liability Insurance
Design professional E&O coverage responds to claims of negligent design, calculation errors, or specification mistakes.
How it worksProfessional
Insurance for Architects & Engineers
Protect your firm from design errors, project disputes, and job-site risk with coverage built for design professionals.
One application, shopped to our A-rated carrier network. Number of offers depends on carrier appetite for your class, state, and loss history.
What underwriters look at
Architects and engineers design structures that stand for decades, which means a design flaw or calculation error may not surface until long after a project is complete. Because construction defects and structural issues can take years to appear, firms typically need coverage that stays in force well beyond the original project completion date to respond to delayed claims.
Design work also involves close coordination with contractors, owners, and regulatory bodies, and disputes over project delays, cost overruns, or code compliance are common even on well-run projects. When a project runs into trouble, firms are frequently named in the resulting dispute regardless of fault, simply because they were part of the design or oversight process.
Firms that visit active job sites for inspections or oversight also take on physical risk beyond the office, from construction site hazards to equipment exposure, adding a general liability dimension to a business that is primarily about intellectual work.
Design errors and omissions
A calculation mistake, code compliance oversight, or incomplete specification can lead to costly rework or structural issues, exposing the firm to a professional liability claim.
Delayed claim discovery
Structural or design problems can take years to surface after a building is occupied, meaning firms often face claims well after project completion.
Project dispute exposure
Cost overruns, delays, or disagreements between owners and contractors frequently draw the design firm into disputes even without a clear design flaw.
Job-site visits
Site inspections and construction oversight expose staff to physical hazards and create liability if a third party is injured during a visit.
The coverage stack for architects & engineers
Most owners in this class start here. A licensed agent will confirm what your contracts, state, and payroll actually require.
General Liability Insurance
Covers bodily injury or property damage claims arising from office operations and job-site visits.
How it worksCommercial Auto Insurance
Covers vehicles used to travel between the office and active job sites for inspections.
How it worksWorkers' Compensation Insurance
Covers medical costs and lost wages for employees injured during site visits or in the office.
How it worksCommercial Umbrella Insurance
Adds an extra layer of liability protection for large-scale projects where a single claim could exceed underlying limits.
How it worksWhat it typically costs
Design professional liability premiums are typically driven by project size and type, with structural and civil engineering work often costing more to insure than residential architecture due to higher stakes if something fails.
| Business size | Typical annual range |
|---|---|
Solo architect/engineer Reflects an independent practitioner working on smaller residential or commercial projects. | $2,000 – $6,000 / yr |
Small firm (2–15 employees) Costs rise with project value and the complexity of structural or civil work undertaken. | $8,000 – $30,000 / yr |
Established firm (15+ employees) Firms handling large commercial or infrastructure projects typically carry substantially higher limits. | $35,000 – $100,000+ / yr |
Illustrative ranges only. Premium varies by state, carrier, limits, payroll, and loss history — it is not a quote.
What moves your premium
- Type of projects (residential, commercial, structural, or civil)
- Total annual construction value of projects designed
- Prior claims history and years in practice
- Policy retroactive date and tail coverage needs
- Frequency of job-site visits and inspections
Architects & Engineers insurance questions
Ready to compare architects & engineers quotes?
One application. Up to 10 competing quotes from A-rated carriers. A licensed agent presents your best options, usually within one business day.