Insurance for Engineers
Engineers stamp calculations, drawings and reports that other people build from, and a claim on that work can follow you from one firm to the next. We request engineering professional liability insurance and the field coverages beside it for California civil, structural, mechanical and electrical engineers, and the insurer decides after reviewing your disciplines and project list.
Since 2025, your contract states whether you carry professional liability
Business and Professions Code 6749 requires a professional engineer to sign a written contract before work begins. It names both parties with their addresses and your license number, describes the services, sets the fee and its payment terms, explains how extra services are added and says how either side can end it. AB 3253 added one more item from January 1, 2025: a disclosure of whether a current professional liability insurance policy covers the engineer in responsible charge. Contracts signed electronically count.
The rule has exceptions, including unpaid work, repeat clients whose earlier bills are paid, a written waiver, and work for other engineers, land surveyors, architects, contractors, geologists, public agencies or industrial corporations when the work relates to their products. For everything else, the disclosure line in your template has to match your policy on the day you sign, so update it at every renewal, and if coverage lapses, change the template before the next proposal goes out.
Engineering professional liability insurance by discipline
Professional liability insurance for engineers, also sold as engineer E&O, answers claims that a calculation, specification, inspection or report caused a client or a third party a financial loss. What drives those claims shifts by discipline. Structural engineers face failures and substitutions made after their design left the office. Civil and site engineers see drainage, grading and geotechnical assumptions turn into damage on a neighbor’s lot. Mechanical, electrical and plumbing designers hear about systems that underperform or miss energy compliance.
Underwriters price those exposures differently, so the application should show how your fees split across disciplines and project types rather than one blended description. Our professional liability page covers how defense and settlement payments work under the policy.
Two engineering files from a residential claims study
The Victor Insurance residential projects study, drawn from Victor and CNA program claims between 2013 and 2022, includes two engineering cases worth reading closely. On a 17-townhouse project, a structural engineer’s truss design was replaced by a value-engineered design from the truss manufacturer. Alleged damages topped $7 million. The original firm paid $1.9 million, and the engineer’s new firm paid its remaining $850,000 limit, because the truss maker was bankrupt and uninsured.
In the second, an engineer performed a visual-only pre-purchase inspection and kept thin records. A $102,000 termite and dry-rot claim settled for $60,000 plus $25,000 in expenses. Put together, the files make the case for written scope letters, saved correspondence about any substitution, and limits sized for the worst project on the books rather than the typical one.
Prior acts, a new firm and the repose clock
The townhouse case shows that an engineer’s exposure travels. Engineering policies are generally claims-made, so the policy in force when a claim arrives responds only if its retroactive date reaches back to when the work was done. Before you leave a firm, start your own practice or join a partner’s, ask how earlier projects will be insured: through the old firm’s continuing policy, prior acts coverage on the new one, or an extended reporting period.
The window to bring a claim is long. Code of Civil Procedure 337.1 and 337.15 apply to anyone furnishing design, surveying, planning, supervision, testing or observation of construction, allowing four years from substantial completion for patent deficiencies and ten years for latent ones. A gap in retroactive dates can leave a decade of stamped work without a policy behind it. Our guide to claims-made and occurrence policies explains the dates on the declarations page.
BPELSG reporting, and the report your insurer files
Section 6770 gives you 90 days, from the time you know of it, to report in writing to the Board for Professional Engineers, Land Surveyors, and Geologists any felony conviction, any crime substantially related to engineering, a civil or administrative settlement greater than $50,000, or a civil judgment or binding arbitration award of $25,000 or more. The settlement and judgment triggers apply where the allegations are fraud, deceit, misrepresentation, breach of contract, negligence, incompetence or recklessness in engineering practice. Failing to report is grounds for discipline.
The Board also hears from the other side. Under section 6770.2, within 30 days of paying all or part of such a judgment, settlement or award, your professional liability insurer reports your name, the amount, the amount paid and who received it. Your own report and the insurer’s should agree, so ask the claims adjuster for the final figures when a matter closes.
Public agency contracts and the indemnity statute
Public agencies sit outside the section 6749 contract list because they write their own agreements, and each one sets its insurance exhibit, coverages and limits in that document. Read it before you price the proposal, since professional liability, general liability, auto and workers’ comp limits all feed into what the bid costs you to carry.
Civil Code 2782.8 shapes the indemnity language in both public and private contracts entered since January 1, 2018. It confines an engineer’s duty to indemnify or defend to claims arising from the engineer’s own negligence, recklessness or willful misconduct and caps defense costs at the engineer’s proportionate share of fault. Two limits apply: state agencies are excluded from its definition of indemnitee, so state contracts are handled differently, and a party to a written design-build joint venture falls outside its defense provisions. Pass the clause to your attorney, and see our page on client contract insurance requirements.
Site visits, field trucks and survey crews
Professional liability does not respond when a field technician backs a truck into a parked car or a visitor trips over your equipment at a site meeting. General liability handles that bodily injury and property damage, and commercial auto covers the trucks your inspectors and survey crews drive between jobs.
Field staff also make workers’ compensation a real line, not a formality. Under Labor Code 3700.5, an employer that goes without it commits a misdemeanor that can bring up to a year in county jail, a fine of at least $10,000 and as much as twice the unpaid premium, or both. Firms with models, drawings and client data on shared servers add cyber cover, and design partners on the same project can read our architects page.
Engineering firm premiums in published data
Insureon’s figures come from its own small-business customers, mostly firms with under five employees, and are national medians, not California market prices or a Mithril1 quote. For engineers it reports about $197 a month, or $2,365 a year, for professional liability at $1 million per claim and aggregate with a $2,500 deductible. Its other medians run about $39 a month for general liability, $61 for a business owner’s policy, $50 for workers’ compensation, $84 for cyber and $231 for commercial auto. Those are entry figures for solo and very small firms at standard limits; established firms pay well above them.
The professional line scales with fees, discipline mix and claim record, while auto scales with vehicles and drivers. Using Insureon’s medians, a small firm carrying professional liability ($2,365), general liability ($472) and one field truck on commercial auto ($2,766) would come to roughly $5,603 a year before any underwriting adjustment.
Structural and geotechnical work, residential and condominium projects, design-build roles, higher limits and past claims push the premium up. A project list light on housing, a higher deductible, consistent written contracts and clean records of scope and substitutions bring it down. The final number is the insurer’s, after it reads the application.
A few useful answers
Common questions
Does my engineering contract have to say whether I carry professional liability insurance?
Since January 1, 2025, yes, unless an exception applies. B&P 6749(a)(6) requires the written contract to disclose whether a current professional liability policy covers the engineer in responsible charge.
When does a settlement have to be reported to BPELSG?
Within 90 days of knowing of it, when a civil or administrative settlement exceeds $50,000, or a judgment or binding arbitration award reaches $25,000, on allegations such as negligence, incompetence or breach of contract in engineering practice (B&P 6770).
Will my insurer tell the Board it paid a claim?
Yes. B&P 6770.2 requires your professional liability insurer to report your name, the amount, the amount paid and the payee within 30 days of paying all or part of a reportable judgment, settlement or award.
Does engineering professional liability insurance follow me when I change firms?
Not automatically. Claims-made coverage responds to work after the policy’s retroactive date, so earlier projects need the old firm’s continuing policy, prior acts coverage on your new policy, or an extended reporting period.
Can I get engineer E&O through Mithril1 for structural work?
You can, when an insurer accepts your application after weighing your project types, fee split and claim history. We request terms with that detail laid out so the underwriter can price structural work on its own merits.