Most tradespeople know about public liability insurance — it’s the one clients ask for, and it’s the one you need before you set foot on most sites. Professional indemnity insurance is different, and a lot of tradespeople either think they don’t need it or aren’t sure what it actually does.
The short answer: if you only do physical work, you probably don’t need it. If you offer advice, produce designs, prepare specifications, or act as any kind of consultant — even informally — you might.
Key Takeaways
- Professional indemnity (PI) insurance covers you if a client claims your advice, design, or recommendations caused them financial loss
- It’s not legally required, unlike employers liability insurance — but some contracts and professional bodies require it
- Most tradespeople who only carry out physical work don’t need PI — it applies when you give professional advice or design services
- According to GoCompare, the median annual cost of PI cover for tradespeople is around £90 per year
- Claims can be made up to 6 years after the work was done, so “run-off” cover matters when you stop trading
What Is Professional Indemnity Insurance?
Professional indemnity insurance covers your legal costs and compensation payments if a client claims that your professional advice, design, or recommendations caused them financial loss or harm. It’s distinct from public liability insurance, which covers physical damage to property or injury to people.
The key word is “professional.” PI isn’t triggered by a botched repair or a leaking pipe — it’s triggered when the advice you gave, the design you produced, or the specification you wrote turned out to be wrong.
How PI Differs from Other Trade Insurance
Tradespeople typically encounter three types of business insurance. They’re often confused:
| Insurance Type | What It Covers | Legally Required? |
|---|---|---|
| Public liability (PLI) | Injury or property damage to clients or the public | No — but most clients expect it |
| Employers liability (EL) | Injury or illness suffered by your employees | Yes, if you employ anyone |
| Professional indemnity (PI) | Financial loss caused by your advice, design, or recommendations | No — but some contracts require it |
A builder who installs a wall incorrectly and it collapses — that’s a public liability claim. A builder who surveys a property, advises the client that the foundations can support a two-storey extension, and turns out to be wrong — that’s a professional indemnity claim. Same person, different type of liability entirely.
Who Actually Needs PI Insurance?
This is the question most tradespeople want answered. The honest answer: it depends on what you do.
You’re more likely to need PI insurance if you:
- Provide design services (kitchen layouts, bathroom plans, loft conversions, structural plans)
- Act as a project manager or principal contractor and advise on specifications
- Offer surveying or inspection services and produce written reports
- Work as a consultant — even occasionally — advising clients on what work needs doing
- Specify products, materials, or systems that others will install
- Produce drawings, schedules, or other professional documents that clients rely on
You probably don’t need PI insurance if you:
- Carry out physical work to a client-supplied specification only
- Do repairs, installations, and maintenance without giving advice on what to install
- Work entirely from drawings and instructions prepared by someone else (an architect, engineer, or designer)
The grey area is the informal advice that tradespeople give all the time. “You could put the boiler here instead — it’d work better.” If the client acts on that and something goes wrong, there’s a question of whether that constitutes professional advice. In practice, claims like this are rare, but it’s worth being aware of.
What Does PI Insurance Actually Cover?
A professional indemnity policy typically covers (this is distinct from what employers liability insurance covers, which is injuries to your staff):
- Legal defence costs — the cost of defending yourself if a client makes a claim, whether or not you’re at fault
- Compensation payments — if a court finds against you, or you settle, the policy covers the payout up to your limit
- Breach of professional duty — failing to meet the standard of care expected from a professional in your position
- Negligent design — producing drawings, specifications, or plans that turn out to be wrong
- Defamation and intellectual property claims — these are often bundled in, though less relevant for most trades
Most PI policies are written on a “claims made” basis — meaning the policy in force at the time a claim is made covers you, not the policy you had when the work was done. This matters if you cancel your policy and a client makes a claim two years later. “Run-off” cover addresses this: it keeps you protected against future claims for work you’ve already done.
How Much Does PI Insurance Cost?
Professional indemnity insurance is generally cheaper than public liability. According to GoCompare data from January 2026, the median annual cost of PI cover for tradespeople is £90 per year — though the right figure for your business depends on several factors:
| Factor | Lower Premium | Higher Premium |
|---|---|---|
| Cover limit | £100,000–£250,000 | £500,000–£1 million+ |
| Turnover | Under £100,000 | Over £250,000 |
| Work type | General building work | Structural advice, fire safety consulting |
| Claims history | None | Previous claims |
| Retroactive date | Recent | Many years back |
Cover typically starts at limits of £250,000 and goes up to £1 million or more. Many trade body schemes and commercial contracts specify a minimum of £500,000. If you’re a sole trader doing occasional design advice, £250,000 is usually enough. If you’re project managing large commercial builds, you’d want more.
Do Contracts Require PI Insurance?
Some do, yes. Here’s where it typically comes up:
- Domestic clients rarely specify it, and most won’t know to ask
- Commercial clients and main contractors often include PI requirements in their supplier conditions
- Local authority or housing association work frequently requires PI alongside PLI and EL
- Professional body membership — some trade associations and competent person schemes require PI if members offer design services
- Appointed person roles — if you’re named as a “responsible person” for fire safety, asbestos, gas, or electrical systems, expect a contract requirement
If you’re tendering for any significant commercial or public sector work, check the contract requirements before you quote. Being caught without required cover can void a contract or expose you personally.
How to Get PI Insurance
PI insurance for tradespeople is available from specialist trade insurers, comparison sites, and brokers. A few options:
- Specialist trade insurers — companies like Rhino Trade Insurance, Tradesman Saver, and Hiscox offer PI as a standalone or add-on to combined trade policies
- Comparison sites — GoCompare, Simply Business, and Comparethemarket list PI options
- Through your trade body — the Federation of Master Builders (FMB), NICEIC, Gas Safe, and others have preferred insurer schemes that sometimes include PI
When comparing policies, watch for:
- The retroactive date (how far back historic work is covered)
- Whether run-off cover is included or costs extra
- Sub-limits for specific claim types
- Whether the insurer has a specialist claims team for trades
Frequently Asked Questions
Is professional indemnity insurance the same as public liability? No. Public liability covers physical damage to property or injury to people caused by your work. Professional indemnity covers financial loss caused by your advice, designs, or professional recommendations. They’re separate policies covering different risks — some tradespeople need both.
Is PI insurance a legal requirement for tradespeople? No. Unlike employers liability insurance, there’s no law requiring tradespeople to hold PI cover. That said, certain contracts, trade body memberships, and client requirements make it practically necessary for some trades.
Can I add PI to my existing trade insurance? Yes — most trade insurers offer PI as an optional add-on to a combined public liability and employers liability policy. It’s worth asking your current insurer before taking out a separate policy.
What’s “run-off” cover and do I need it? Run-off cover protects you against claims made after you stop trading for work you completed while trading. Under the Limitation Act 1980, clients have up to 6 years to bring a civil claim (and longer for latent defects or personal injury), so run-off cover matters if you retire, close your business, or switch insurers. Without it, you could face a personal liability for advice you gave years earlier.
How much cover do I need? It depends on the scale and nature of your work. A sole trader doing occasional kitchen designs might be fine with £250,000. A company managing complex builds with multiple subcontractors should look at £1 million or more. If a contract specifies a minimum, start there.
Should You Get PI Insurance?
If you’re a tradesperson who does physical work to someone else’s specification — you don’t need PI insurance. Your public liability policy covers the risks you actually face.
If you give advice, prepare designs, manage projects, or hold yourself out as an expert whose professional opinion clients rely on — it’s worth getting a quote. At around £90 a year, it’s not a major expense, and a single defended claim will cost far more than a lifetime of premiums.
If you’re building your trade business and wondering what else you need to get right, a professional website is often what helps clients trust your expertise before they’ve even met you. If you set up as a sole trader or started a new trade company recently, sorting your digital presence alongside your insurance is a smart move. Digital Tradies builds websites for UK tradespeople from £49/month, with no upfront cost and no contract. Get started here.
This article is for general information only. It does not constitute legal or insurance advice. Consult a qualified insurance broker for guidance specific to your situation.
