Emergency Plumber Scams and How to Spot Them

The cheap headline price that turns into a large bill

The commonest trick is a low figure in the advert that is not really the price of anything. It turns out to be a "from" price, or it covers attendance only, with labour charged from the moment the engineer walks in, often in full hours so a twenty-minute job is billed as sixty. Then come extras nobody mentioned on the phone: a diagnosis fee, a parts-sourcing fee, a charge for "specialist equipment", parking, a night or weekend multiplier.

The defence is simple. Before anyone sets off, ask for the call-out charge, what it covers, how labour is charged after that, how parts are priced and whether any night rate applies, and ask for it by text or email. A genuine firm can do that in a minute. Offers of a free call-out deserve the same questions, because the cost is usually recovered somewhere else; see what a free call-out usually means.

For comparison, as a London emergency plumber we charge the £60 call-out at any hour, and the repair price is agreed with you on site before any work starts. Our 24-hour plumber page sets out what that covers.

Broker websites that sell your job on

Some of the sites at the top of the search results are not plumbers at all. They take your call, then sell the job to whichever tradesperson will pay for it or is nearest. The price you were quoted may not be the price the person arriving intends to charge, and when something goes wrong each side points at the other.

Signs you have rung a broker: a site that claims a local office in every town in the country, a call handler who cannot tell you who is coming or which firm they work for, and a price that "will be confirmed by the engineer". Ask plainly whether the person arriving works for them. If they say no, ask for the name of the firm doing the job and agree the price with that firm directly.

The midnight upsell: "your whole system needs replacing"

A plumber who finds a real fault at night may be right that the boiler is old or the pipework is poor. What should worry you is pressure to agree to a big job on the spot: a new boiler, a power flush, a full repipe, a new cylinder, with a discount "if you sign tonight".

An emergency visit should end with the problem made safe and a clear written recommendation. Large jobs can wait for daylight and a second quote. The Consumer Contracts Regulations 2013 remove the usual 14-day cancellation right for an urgent repair you called someone out for, but that exception does not stretch to extra services beyond the repair you asked for, or goods other than the parts the repair needed. So a boiler replacement sold to you in your hallway at night generally keeps its cancellation rights.

Gas engineers can properly declare an appliance unsafe. Under the gas industry’s unsafe situations procedure they classify it as "At Risk" or "Immediately Dangerous", fix a "Danger, Do Not Use" label, ask your permission to turn it off or disconnect it, and give you a written warning notice. That is not a scam; it is the safety procedure doing its job. What is not normal is refusing to explain the fault in writing, or making the warning go away if you agree to buy a new boiler from them. If in doubt, ask another Gas Safe registered engineer for a second opinion.

If you smell gas, open the windows, turn the gas off at the meter if it is safe to, keep clear of switches, and call the National Gas Emergency Service on 0800 111 999 from outside. They make the supply safe for free, so nobody should be charging you just to turn the gas off.

Fake or borrowed Gas Safe credentials

Anyone working on a gas boiler, fire, hob or meter pipework must be on the Gas Safe Register. Rogue traders get round this by showing a card that belongs to someone else, a card that has expired, or a logo on the van with no registration behind it.

Every registered engineer carries a photo ID card with a licence number. Check the face matches, then check the number on the Gas Safe Register website or by phone. Turn the card over: the back lists the categories of work the engineer is qualified for, and a card that covers only cookers does not cover a boiler. Our guide to checking the Gas Safe Register walks through it. Gas work is carried out by Gas Safe registered engineers; a plumber who only works on water does not need to be registered, but should not touch anything gas.

Cash only, or money up front by bank transfer

A tradesperson who will only take cash, or wants a deposit transferred to a personal account before they start an emergency repair, is asking you to give up your easiest route to a refund. Parts for an emergency job come off the van or from a trade counter; there is rarely a genuine reason to pay before the work is done.

Pay by card on completion if you can. A debit card lets your bank attempt a chargeback if the service was not provided. A credit card is stronger still: section 75 of the Consumer Credit Act makes the card company jointly liable for a breach of contract where the job cost between £100 and £30,000.

What to do if you think you have been overcharged

The Consumer Rights Act 2015 says a service must be carried out with reasonable care and skill, and where no price was agreed beforehand you only have to pay a reasonable price. If the bill is wildly out of line with what you were told, say so at the time, in writing if possible, and ask for an itemised invoice showing labour hours and each part.

If you feel unsafe arguing on the doorstep, you can pay and make clear, in writing, that you are paying under protest and dispute the amount. Then:

• Write to the firm setting out what you were quoted, what you were charged and what you want back
• Keep the texts, emails, call logs and photos of the work done
• Ask your card provider about a chargeback, or a section 75 claim for a credit card payment
• Report the trader to Trading Standards through the Citizens Advice consumer helpline
• Get a second engineer to inspect the work if you suspect it was not needed or not done properly