Reviewed by licensed advisers at Smiths Insurance & KiwiSaver (FSP712931) · Updated 11 November 2026

Engineers Professional Indemnity Insurance NZ: What to Know

Professional indemnity (PI) insurance pays to defend and settle a claim that your engineering advice, design or certification cost a client money. For New Zealand engineers the requirement usually comes from a client's engagement terms or a building consent authority's producer statement practice, and the Building Amendment Bill, introduced on 29 June 2026, proposes PI cover for design professionals on building work of $100,000 or more.

In short

Engineering New Zealand says an engineering firm issuing a producer statement states it holds PI cover of at least $200,000.
Clients, government agencies and main contractors often name a higher limit in the engagement, plus run-off after the job.
PI is claims-made, and building work can be questioned up to 10 years later. Continuous cover matters more than the price in any one year.
Public liability, statutory liability and cyber sit beside PI. They answer different questions.

This page is about business insurance for engineers and engineering firms. The general guide is professional indemnity insurance in NZ.

Where engineers are asked for PI

Producer statements, where the firm states PI of at least $200,000
A minimum limit in council, developer or main contractor terms
A certificate of currency before you start
Run-off for a period after practical completion
Proposed, not yet law: the Building Amendment Bill 2026 would require PI for design work on building jobs of $100,000 or more

A design or calculation error

A wrong load assumption or specification shows up in a finished building.

A producer statement relied on

A council, lender or buyer acts on your certification.

A claim years later

Building work can be questioned up to 10 years after the job.

Site and field gear

Survey, testing or monitoring instruments stolen or damaged.

Work out what to raise

Tick what applies to you

I do structural, civil or geotechnical design
Covers to raise: Professional indemnity
I issue producer statements
A producer statement includes a line on the firm's PI cover. The licence section below gives the figure and its source.
Covers to raise: Professional indemnity
I design mechanical or electrical systems
Covers to raise: Professional indemnity
I visit sites to inspect or observe
Covers to raise: Public liability, Professional indemnity
I carry survey or testing instruments
Covers to raise: Tools and equipment
I drive to site most weeks
Covers to raise: Business vehicles
I hold client models and confidential reports
Covers to raise: Cyber
I run a firm with staff
Covers to raise: Statutory liability

What these covers do not pay

The cost of redoing your own design or repairing the defect itself is usually outside PI.
Guarantees of performance beyond a reasonable standard of care may not respond.
Fines and penalties are generally not covered, and health and safety fines can never be insured.
Survey gear damaged by wear and tear or left unattended may fall outside cover.
Work done before the retroactive date, or claims made after the policy ends without run-off, may not respond.

General information only. Whether a cover responds depends on the policy wording.

Which clause is in your contract?

Professional standard
You agree to work with reasonable skill and care, or to a named industry standard. If the work falls short, that is the test a client may use against you.
Covers to raise: Professional indemnity
What it does not decide: It does not decide whether a claim for falling short is covered. Professional indemnity wordings differ on what is excluded, such as guarantees, fee disputes and known issues.
Design responsibility
The contract makes you responsible for design or specification work, not only for building to someone else's plans. If the design is wrong, the cost can land on you.
Covers to raise: Professional indemnity, Public liability
What it does not decide: It does not decide whether your policy covers design advice. Public liability policies commonly exclude it, and professional indemnity wordings differ on what counts as design.
Limitation of liability
A cap on what you could owe the client if something goes wrong, often tied to your fees or a set figure. It can also exclude certain losses such as lost profit.
Covers to raise: Professional indemnity, Public liability
What it does not decide: It does not decide what your insurance pays. A cap in the contract may sit below or above your policy limit, and some claims, such as personal injury, may fall outside it.

General information, not legal advice. The full clause and the policy wording decide how it applies.

Check your certificate of currency against the contract

Clients and main contractors in this trade ask for:

A set PI limit in the engagement terms
Cover that continues after the job ends
A certificate of currency before work starts

Check the insured name, limit and dates match the contract. The policy wording, not the certificate, decides what is covered. How a certificate of currency works

What each cover may pay, and what it usually does not

Professional indemnity
May respond to
A claim that your design, advice or inspection cost someone money.
Common trigger
A calculation error, a missed risk or a defect traced to your design.
Usually not covered
The cost of fixing your own design and work outside the retroactive date.
Public liability
May respond to
Injury or property damage on site visits and inspections.
Common trigger
An accident during a site visit.
Usually not covered
Financial loss from design errors.
Cyber
May respond to
Response costs when client models and reports on your systems are breached.
Common trigger
Ransomware or stolen credentials.
Usually not covered
Upgrading security afterwards.
Statutory liability
May respond to
Defence costs if a regulator investigates or prosecutes, depending on the wording.
Common trigger
A workplace or building-related investigation.
Usually not covered
Health and safety fines, which can never be insured.
Tools and equipment
May respond to
Survey and testing instruments lost, stolen or damaged in the field.
Common trigger
Theft from a vehicle or a drop on site.
Usually not covered
Wear and tear and gear left unsecured.

If something goes wrong

A design flaw shows up
A retaining wall design is questioned after movement, and the owner claims the cost of remediation.
May respond: Professional indemnity
Have ready
- Calculations and drawings
- The engagement terms and scope
- Site observation records
- Producer statements issued
Injury on a site visit
During an inspection, a board you moved falls onto a parked ute and grazes a worker. ACC deals with the injury, so the claim is about the ute and any legal costs.
May respond: Public liability
Have ready
- Photos of the area
- The site induction and visit record
- Names of anyone present
Survey gear is stolen
A total station is taken from a vehicle parked at a site.
May respond: Tools and equipment, Business vehicles
Have ready
- Serial numbers and purchase records
- The police report
- Where it was stored
A claim after you switch insurer
A claim arrives about work from a few years back, just after you changed policies.
May respond: Professional indemnity
Have ready
- Both policy schedules and dates
- The retroactive date
- The project file for that job

Typical examples, not real claims. ACC deals with most injuries, so an injury claim is mostly about property and legal costs. Whether a claim is paid depends on the policy wording and the facts.

Licence versus insurance

A licence is not insurance.

What the licence or register says

No general law makes engineers hold PI, as at 11 November 2026. The practical triggers are client terms and producer statement practice.
Engineering NZ says a firm issuing a producer statement states PI of at least $200,000 (checked 11 November 2026).
The Building Amendment Bill 2026 proposes PI for design professionals on building work of $100,000 or more. It is before a select committee and not law, as at 11 November 2026.

Source: Engineering New Zealand

Where the PI requirement comes from

No general New Zealand law sets a PI requirement for engineers today. For most it is three layers.

1. The producer statement. Engineering New Zealand explains that when a firm issues a producer statement (for example a PS1 for design or a PS4 for construction review), the firm states it holds PI insurance of at least $200,000, and the building consent authority accepts liability arising from the statement as capped at that figure. The same page says engineers are finding higher limits hard to buy. If you issue producer statements, your policy needs to be in force when you sign them.

2. The client contract. Councils, developers, government agencies and main contractors write a minimum PI limit into their terms, then ask for a certificate of currency before you start. The limit is the client's number, not a measure of your fees. Read it before you bid, because it decides which jobs you can take.

3. The Building Amendment Bill. Engineering NZ reports that the Building Amendment Bill 2026 would replace joint and several liability for defective building work with proportionate liability, and would require professionals who contribute to design or compliance to hold PI insurance, including engineers, architects, designers and building surveyors. As at 11 November 2026 it is before a select committee, so treat it as a proposal. As introduced, it applies where building work is $100,000 or more. The Bill text sets fines for not holding the cover of up to $50,000 for an individual and $150,000 for a body corporate, lets regulations say what level of cover is adequate, and starts these rules on the first anniversary of Royal assent.

Check your engagement terms, your registration conditions and any body you belong to for the current position.

What claims against engineers look like

Design and specification. A calculation error, a wrong load assumption or an unsuitable specification that shows up in a finished building.
Observation and certification. A producer statement or inspection report relied on by a council, a lender or a buyer.
Assessments. Structural, geotechnical or seismic assessments that a purchase or strengthening programme depends on.
Advice outside the drawings. A client asks one more question, you answer it, and that answer is relied on.
Delay and coordination. Late or conflicting information that costs a contractor time. Check how your policy treats delay-type losses.

The loss is usually a client's money, not an injury. That is the line between PI and public liability.

Why a 2026 job can produce a claim in the 2030s

Proceedings about building work are barred 10 years or more after the act or omission, under section 393 of the Building Act 2004. A retaining wall defect may not appear until a wet winter years later, after the building has changed hands twice.

PI is claims-made: the policy in force when the claim is made and notified responds. So:

Keep cover continuous. A lapse leaves past work exposed.
Check the retroactive date when you change insurer.
Plan for run-off if you retire, sell or close the firm.

Notify your insurer when you learn of a circumstance that could lead to a claim, not only when a demand arrives. Do not admit fault or offer to fix the work without checking your policy first.

Contract terms to read before you sign

The limit. Per claim or in the aggregate? Does it include defence costs?
Fitness for purpose. A promise that the design will be fit for a purpose can go beyond the usual duty of reasonable skill and care, and many policies exclude liability taken on by contract beyond what the law would impose.
Liability caps. A cap tied to fees limits what the client can claim. ACENZ publishes standard-form agreements, so a cap is a normal thing to raise.
Indemnities. Check an indemnity in the client's favour is not wider than your cover.
Run-off. How long after practical completion must cover stay in place?
Joint ventures and subconsultants. Their limit and yours may not match.

If you work under a design-and-build head contract or an NZS 3910 form, the insurance clauses can sit in several documents. Read all of them.

What PI usually leaves out

Deliberate or fraudulent acts.
Claims or circumstances you knew about before the policy started.
Bodily injury and property damage, which belong under public liability.
Contractual penalties, such as liquidated damages for late delivery.
Fines. Health and safety fines can never be insured, because section 29 of the Health and Safety at Work Act 2015 makes any such insurance of no effect.
Work outside the disciplines you declared. If you move from structural into geotechnical, or take on an overseas project, tell the insurer first.
Items some wordings restrict, such as pollution, asbestos or fire safety design. Look in the schedule, not only the summary.

The covers beside PI

Cover	The question it answers	When it comes up
Public liability	Who pays if I injure someone or damage property on site?	Site visits, inspections, testing
Statutory liability	Who covers defence costs if a regulator investigates?	Firms with staff
Cyber	What if drawings, client data or email are compromised?	Practices holding client models and reports
Business interruption	What if the office or systems are down?	One office or one server
Tools and equipment	What if survey or monitoring gear is stolen?	Field engineers
Business vehicle	What if the vehicle is written off?	Driving to site weekly

If a director or partner holds the practice together, the life-cover side sits on our business protection page. For the wider picture, see the business insurance hub.

Sole practitioners and larger practices

A sole trader engineer carries a claim personally. A company can limit some exposure, but directors can still be named, and the engineer who signed the producer statement is the person the council looks to. Larger firms add disciplines, subconsultants and a bigger limit asked by clients.

Engineering NZ lists professional indemnity, statutory liability and public liability among its member insurance options, offered through the CEAS society. They are one input, not the only route.

Price

Cost depends on the insurer's underwriting, so we do not quote prices here. The main drivers are fee income, the disciplines you work in, the limit and excess, claims history and the contracts you accept. An adviser needs a short call before anything is priced.

How we help

A Smiths adviser will phone you to talk through which covers to look at. Some business covers we refer to another licensed Financial Advice Provider, and we will tell you who, and how they are paid, before your details go to that firm. Bring your engagement terms and the limit your biggest client asks for. Smiths Insurance & KiwiSaver may receive a commission or referral payment if you buy. Cover and price depend on insurer underwriting and the policy wording. Financial advice is provided by Craig Smith Business Services Limited, trading as Smiths Insurance & KiwiSaver, a licensed Financial Advice Provider (FSP712931).

Frequently Asked Questions

Do engineers have to hold professional indemnity insurance in NZ?

Not under a general law today. The practical triggers are client engagement terms and producer statement practice, where Engineering NZ says the firm states PI of at least $200,000. The Building Amendment Bill 2026 proposes PI cover for design professionals on building work of $100,000 or more, and it has not yet passed.

How much PI cover does an engineer need?

The limit is set by your contracts. Producer statements refer to $200,000, and clients often ask for more. Read the clause, then ask your adviser what is available for your discipline.

Does PI cover work I did before I took out the policy?

Only if the policy has a retroactive date that reaches back to it. Tell the insurer about any known problems before the policy starts.

I am closing or selling my practice. Do I still need cover?

Claims on past work can arrive for years, and building work has a 10-year limit under the Building Act 2004. Ask about run-off cover before you stop trading.

Does public liability cover a design mistake?

No. Public liability covers injury and property damage. A design error that costs a client money is a PI matter.

References

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