Public liability insurance for NI tradespeople: 2026 cost and cover guide

What public liability insurance covers

Public liability (PL) insurance covers your legal liability for third-party bodily injury and third-party property damage caused by your work. If you drop a hammer through a customer's conservatory roof, a heating-system fault you installed floods the floor below, or a passer-by trips over your tools and breaks an ankle, the resulting claim against you sits inside a PL policy. Defence costs and any settlement or court award up to the policy limit are paid by the insurer rather than out of your bank account.

What PL does not cover is just as important. It does not cover damage to the work product itself - the boiler you installed, the wall you re-rendered, the new electrical circuit. If your workmanship is defective and needs redoing, that is your cost. Most policies explicitly exclude defective workmanship as a class. PL does not cover injury to your own employees - that is employers' liability, which is a separate and statutory requirement the moment you have anyone on the payroll. It does not cover claims about advice, design or system sizing you gave - that is professional indemnity, a separate bolt-on that matters most for tradespeople who certify, design or specify rather than only install. And it does not cover your own tools, plant or stock - those sit inside a separate tools or goods-in-transit section of a combined tradesman package.

2026 cost ranges by trade

Public liability premiums are individually rated. The bands below are realistic 2026 ranges from publicly-reported UK broker pricing for a sole-trader to small-business tradesperson, with no claims and modest turnover, buying stand-alone PL at the cover level shown. Real quotes can sit inside or outside these bands depending on your specific circumstances.

The numbers above are reference points, not quotes. PL pricing is sensitive to several factors at once and brokers re-rate renewals annually, so the same business can see materially different prices year-to-year without changing what it does. Always treat your actual quote, not the band, as the figure to plan around.

How much cover do you actually need

One million pounds is the de facto industry floor for a self-employed tradesperson in the UK and Northern Ireland. It is the lowest cover level most insurers quote for a tradesperson, and it is what most homeowner-facing jobs and small contract works assume by default.

Two million pounds is increasingly the standard for membership-based directories and homeowner-platforms. NI Trades expects current PL cover and verifies it at application stage. Two million is also the sensible floor for any tradesperson who routinely works at height, in occupied properties, with hot tools, or on heating systems where a single fault can damage multiple rooms.

Five million pounds is the right floor for commercial work, public-sector contracts, larger builders working under JCT minor works or intermediate-form contracts, and any job where the principal contractor or main contract explicitly stipulates £5m PL. Read your contract documents before you assume £2m is enough - the contractually-required limit is not negotiable on day one of the job. Cover above £5m is normally only requested by major commercial principal contractors, and at that level cover should be specified by the contract, not guessed.

What drives premium variance

Two tradespeople in the same trade can pay very different premiums because the rating factors that sit behind a quote are individual to the business. The main levers are:

• Your trade. Risk classification by trade is the single biggest factor - a structural builder working at height pays a multiple of what a tiler doing kitchen and bathroom work pays.
• Annual turnover. Premiums scale with turnover. Most insurers band turnover (for example up to £50k, up to £100k, up to £250k); crossing a band at renewal can lift the premium even with no claims.
• Claims history. A single claim in the last five years materially lifts the premium. Two or more, and several insurers will decline to quote at all.
• Employees and sub-contractors. Adding a labourer triggers a statutory employers' liability requirement (£5m minimum, normally bundled at £10m) and lifts the PL premium because exposure rises.
• Average and maximum contract value. A trade routinely working on £200,000 fit-outs is rated higher than the same trade working on £3,000 jobs.
• Working at height. Any work above a stated height (typically 2 metres, 5 metres or 10 metres in the policy schedule) triggers an uplift or an explicit declaration.
• Hot work. Soldering, welding, grinding and brazing are rated separately because fire is the largest single source of catastrophic third-party damage claims in the trades.
• Working in occupied properties. Active retail, restaurant and tenanted property work is rated higher than empty new-build.

What to look for in a policy

Two policies at the same premium and the same headline cover limit can be very different documents. Before you buy, check:

• Working-at-height limit. The schedule states the height above which cover is restricted or excluded. Make sure it is high enough for the work you actually do - roofing and gutter work routinely sits above 5 metres on standard NI two-storey housing stock.
• Hot-work cover. Soldering, brazing, welding and grinding are commonly subject to a hot-work warranty (specific procedural requirements during and after the work) and may be capped or excluded outright on some lower-cost policies.
• JCT contract clause. If you do any contract work, check the policy includes the standard indemnity-to-principals clause your contract will require.
• Defective workmanship. Almost always excluded. Confirm exactly what wording is used and whether any narrow extension is offered.
• Sub-contractor cover. If you ever bring in another trade, the policy must extend cover to sub-contractors working under your control. Some cheap policies exclude this entirely.
• Professional indemnity bolt-on. If you give design advice, size heating or electrical systems, or issue certificates, add PI - PL alone will not respond to a claim about your advice or design.
• Excess. The policyholder excess on a PL claim can be £250, £500 or £1,000 - the cheapest quote is often the one with the highest excess.

NI-specific factors that affect quotes

Most UK-wide trade insurers cover Northern Ireland on identical terms to Great Britain, but there are a handful of NI-specific things to be clear about at quote stage:

• Cross-border ROI work. If you take work in the Republic of Ireland, your UK PL policy will not automatically extend across the border. Declare cross-border work to the insurer and have the territorial limits amended, or arrange separate cover. This matters most for trades within easy reach of the border (Newry, Derry / Londonderry, Strabane, Enniskillen, Armagh).
• OFTEC oil work. Oil-fired appliance and oil-tank work needs explicit cover. OFTEC themselves require evidence of PL with cover appropriate to oil work at registration. Read the policy wording - some generic plumber policies exclude oil-fired installation work.
• Gas Safe work. Gas Safe registration similarly requires PL in place, and the policy must explicitly cover gas work. Generic property-maintenance PL is not enough.
• NI-domiciled brokers vs UK brokers. Both quote and write business in NI. NI-domiciled brokers sometimes have better visibility on local trade rates; UK-wide platforms (Simply Business, Tradesman Saver, AXA Business) tend to be faster to compare at quote stage. Get two or three quotes from different distribution channels before you commit.
• Heating-engineer dual registration. Many NI engineers carry both Gas Safe and OFTEC. Confirm the single policy covers both fuel types under one schedule rather than carrying two policies for the same work.

How to compare quotes properly

Comparing only the headline premium is the most common mistake at renewal. Renewal-time price-walking (gradual price rises on existing customers while new customers are offered lower entry prices) is widespread across UK personal and small-business insurance. Shopping around at least every two years, and ideally every renewal, is normal practice.

When you compare, line up the same cover limit on every quote (do not compare a £1m quote against a £2m quote and conclude the £1m one is cheaper - it should be). Compare the policy excess, the working-at-height limit, the sub-contractor clause, the hot-work treatment, any void or warranty clauses and the territorial limits. Then compare premium.

Trade-specialist brokers (Tradesman Saver, Rhino Trade Insurance, TradesmanInsure, Insure24, Get Indemnity) and the big small-business marketplaces (Simply Business, AXA Business Insurance, Hiscox) are the practical starting points for a UK comparison. Use one of each and one NI-domiciled broker if you have a local relationship.

Why every NI Trades application requires a current PL certificate

Public liability is the single piece of business insurance every NI Trades listing must show at application stage. We verify that a current PL certificate is in force on the date of your application as part of the standard credential check documented at how we vet. That check sits alongside trade qualifications, Gas Safe, OFTEC and NICEIC where relevant, and business identity.

The verification is at application stage, not continuously, because insurance can lapse or be cancelled between renewals and no directory can practically monitor every policy every day. That is why we tell every homeowner to re-verify your certificate is in force on the date of hire - the steps for that sit on our verifying a tradesperson's credentials in NI guide. If your policy changes mid-year, update us so the listing stays accurate. If you want to look at the platform side properly, see our plans and pricing for tradespeople.

Frequently asked questions

This guide is general editorial guidance for NI tradespeople, not financial or insurance advice. The 2026 price bands quoted here are indicative ranges drawn from publicly-reported UK broker pricing in May 2026 (Tradesman Saver, TradesmanInsure, Rhino Trade Insurance, Simply Business, AXA, Hiscox, Insure24, Get Indemnity, MyJobQuote). Real quotes vary materially with trade, turnover, claims history, employees, sub-contractor use and work mix. Always compare quotes against your own circumstances and read the policy wording before relying on cover.