Emergency Home Repairs: When to Call a Professional vs. Wait

Emergency call-outs cost two to three times a normal visit. Sometimes that’s money well spent — a gas leak or a live electrical fault is not something to sleep on. But plenty of “emergencies” are things that feel urgent at 11pm and can safely wait until a normal-rate appointment in the morning.

Knowing the difference saves you money and stress. Here’s a clear line for the most common household problems.

Call a professional immediately

These are genuine emergencies. Don’t wait, don’t DIY, and in the first three cases, get out and call the emergency line first.

• Smell of gas. Don’t touch switches (a spark can ignite it), don’t turn anything on or off. Open windows, get everyone out, and call the National Gas Emergency Service on 0800 111 999 from outside. Only then think about a Gas Safe engineer.
• Carbon monoxide alarm sounding (or symptoms: headache, dizziness, nausea that eases when you leave the house). Get out, ventilate, call the same emergency number. CO is odourless and deadly.
• Burning smell, scorching or sparks from sockets/wiring. Switch off at the consumer unit if you can reach it safely, and call an electrician. Electrical fire risk doesn’t wait.
• Water pouring in and you can’t stop it — a burst pipe or mains leak. Turn off the stopcock (usually under the kitchen sink), and if it’s near electrics, kill the power. Then call an emergency plumber.
• Sewage backing up into the house. A health hazard, not a “morning” job.
• No heating or hot water in freezing weather with a vulnerable person, baby, or elderly resident in the home. Comfort is one thing; risk to health is another.
• You’ve been locked out with a vulnerable person or a pet shut inside, or it’s genuinely unsafe to wait — call a locksmith.

Safe to wait until normal hours

These feel annoying but rarely get worse overnight — and paying emergency rates for them is money wasted.

• A dripping tap or a slow, contained leak you can catch in a bucket or bowl. Turn off the local isolation valve if there is one, put a towel down, and book a normal appointment.
• One dead socket or light while the rest of the house works fine. Stop using that socket and get it looked at in daylight.
• A single radiator not heating when the rest of the system is fine. It’s likely trapped air or a valve — a comfort issue, not an emergency.
• A running or slow-to-fill toilet, as long as it’s not overflowing. Turn off its isolation valve if needed.
• Cosmetic damage — a cracked tile, a sticking door, a dripping gutter on a dry day.
• A boiler showing a fault code but still working, in mild weather. Note the code and book a service.

The grey area: use judgement

Some things depend on context. A blocked drain is a nuisance if it’s slow, an emergency if it’s flooding. No hot water is a “book it in” problem in July and closer to urgent in January with young children in the house. When you’re unsure, ask yourself three questions:

1. Is anyone’s safety at risk? (Gas, CO, fire, electric shock, flooding near electrics — always yes to a call-out.)
2. Is the damage actively getting worse by the hour? (Water spreading, structural — call now. Contained and stable — it can wait.)
3. Can I safely isolate it? (If turning off a valve, switch or the stopcock stops it getting worse, you’ve bought yourself the time to book at a normal rate.)

Three things every household should be able to find in the dark

Half of “emergency” panic is not knowing how to stop the problem. Before anything goes wrong, locate these — and make sure everyone in the house knows too:

• The internal stopcock — turns off your water. Usually under the kitchen sink, sometimes in a downstairs loo or utility.
• The consumer unit (fuse board) — turns off your electrics, with a main switch and individual breakers. Often in a hallway cupboard, under the stairs or in the garage.
• The gas meter and emergency control valve — so you can turn off the gas supply if you’re ever told to.

Knowing where these are turns a flood into an inconvenience and a fault into a manageable wait.

When you do call, call properly

Even in a real emergency, thirty seconds of vetting protects you: confirm the trade registration (Gas Safe for gas, a scheme like NICEIC for electrics), get the call-out fee and hourly rate agreed by text before they set off, and don’t pay large sums in cash up front. Emergencies are exactly when rogue traders count on you being too flustered to check.