A holiday let is most at risk of a hidden water leak during empty weeks between bookings, when nobody is around to notice a dripping pipe, a failed washing machine hose or a running toilet. Fit a smart shut-off valve, check under sinks at every changeover, and get a professional survey done if you notice damp, a musty smell or an unexplained rise in usage.
In This Guide
Why holiday lets are exposed to leak risk
A normal family home has someone in it most days. A holiday let doesn’t. Between guests, a property in rural Perthshire or on the coast can sit empty for a week, two weeks, sometimes longer outside peak season. A small drip that a homeowner would spot within a day can run for a fortnight in an unoccupied let, soaking into floors and walls the whole time.
Guests don’t help either, through no fault of their own. Most people staying in a let for a few nights won’t notice a slow leak under a sink, a loose shower hose connection, or a toilet that’s running quietly. They’re on holiday, not doing a plumbing inspection.
Add in the fact that many Scottish holiday lets are converted farm buildings, older cottages, or properties with long, exposed pipe runs to outbuildings, and the risk compounds. Older pipework, more empty time, less oversight. It’s a combination worth taking seriously.
The changeover check that catches most problems
Cleaners and changeover staff are your first line of defence, and most leak damage we see could have been caught weeks earlier with a five-minute check built into the standard turnaround.
- Under every sink: look for damp cabinet floors, water marks, or a smell of stale water.
- Behind the washing machine and dishwasher: check hoses for kinks, bulges or drips at the connection points.
- Toilet cisterns: listen for a hiss or trickle after flushing. A running toilet is one of the most common silent leaks in any property.
- Bathroom sealant: look for lifted or blackened sealant around the bath or shower tray, a sign water is getting behind it.
- Outside taps and hoses: check for drips at the connection, especially after guests have used a garden hose or hot tub fill.
- Ceilings below bathrooms: a fresh stain or soft patch on a ceiling is worth investigating the same day, not at the next changeover.
What a thermal scan picks up that a visual check can’t
A thermal camera shows the cooler patch where water is soaking into a wall or floor, often well before any staining reaches the surface. For a property you can’t check daily, that head start matters.
Winter shutdowns and empty weeks
If your let goes unbooked for stretches over winter, frozen and burst pipes become the bigger risk. Scottish Water recorded around 3,100 pipe bursts across Scotland in winter 2023/24, and more than 30% of those were on customer-side properties rather than the mains. Its standing advice is to heat, insulate and protect: keep heating ticking over at a low background temperature, insulate exposed pipes and tanks, and arrange regular checks on any property left vacant for more than a few days.
Insurer NFU Mutual puts the average burst-pipe home insurance claim at around £10,000, based on figures reported by STV News, with almost 6,500 escape-of-water claims in 2023 alone. A holiday let that sits empty through a cold snap without heating or a check-in arrangement is exactly the profile that ends up in those figures.
Never turn the heating off completely in an unoccupied Scottish property over winter. A low background setting, combined with insulated pipework, is far cheaper than a burst pipe and the weeks of lost bookings that follow.
If your let is genuinely closed for the season rather than just between bookings, read our guide on empty property leak prevention for a fuller shutdown routine, including whether to isolate the supply entirely.
Smart shut-off valves and monitoring
A smart water shut-off valve sits on the incoming supply and cuts the water automatically if it detects continuous flow beyond a set threshold, the pattern you’d expect from a burst pipe or a tap left running, rather than normal use. Many models pair with an app so you get an alert on your phone whether you’re at home or three hundred miles away.
For a holiday let, this is one of the more cost-effective protections available, because it does the one thing a changeover check can’t: it catches a leak the moment it starts, not days or weeks later. Combined with the manual checklist above, it closes most of the gap that empty weeks create.
Had a leak between bookings?
If a changeover check has turned up damp, a stain, or higher-than-expected water use at your let, we can find the source without opening up walls or floors on a guess.
When a guest reports a leak
Take every guest report seriously, even a vague one. "The bathroom floor felt a bit damp" or "there’s a funny smell in the kitchen" is often the only warning you get before a much bigger problem shows up. Get someone to the property the same day if you can, and don’t rely on the next scheduled changeover.
If the source isn’t obvious on a visual check, that’s the point to call in a proper survey rather than guessing. Cutting into a wall or lifting flooring on a hunch, in a property you’re trying to keep bookable, is expensive to put right even if you happen to guess correctly.
When to bring in a professional survey
Book a survey if you’ve seen any of the following: a damp patch that keeps coming back after drying, a musty smell with no obvious source, a water bill or usage reading that’s climbed without a clear reason, or a guest report you can’t resolve with a quick look round.
We use commercial leak detection methods, thermal imaging, acoustic listening and tracer gas where appropriate, to find the leak without tearing the property apart. That matters for a holiday let more than almost any other building type, because every day of disruption is a day you can’t take a booking. Our reports are insurance-approved, so if the damage needs a claim, you’ve already got the paperwork an insurer will ask for.
We cover lets across the country through our water leak detection service, from city-centre flats to remote cottages, and surveys are non-invasive by default.
Building leak-awareness into how you run the let
The lets that avoid serious leak damage tend to share a few habits: a written changeover checklist that actually gets followed, a cleaner or manager who knows what to look for and feels able to flag concerns without being told off for slowing the turnaround, and a standing arrangement for someone to check the property during long unbooked stretches, especially over winter.
None of this is complicated. It’s mostly about making sure the five-minute check happens every single time, not just when someone remembers.
Frequently Asked Questions
At every changeover, ideally. A five-minute check under sinks, behind appliances and around bathroom sealant catches most problems early. During long unbooked stretches, especially winter, arrange a separate check even if there’s no booking either side.
For short gaps between bookings, generally no, since you’ll need water working for the next guest. For extended winter closures, isolating the supply and draining the system is worth considering. See our dedicated guide on turning water off during empty periods for the full picture.
Frozen and burst pipes in an unheated or under-heated property. Scottish Water recorded around 3,100 pipe bursts across Scotland in winter 2023/24, and its standing advice is to keep heating ticking over and insulate exposed pipework in any vacant property.
Generally yes. They cut the water supply automatically if they detect a burst-pipe flow pattern, which catches a leak in the moment it starts rather than days later at the next changeover. Most pair with a phone app so you get an alert wherever you are.
Book a professional survey rather than opening up walls or floors on a guess. Non-invasive methods like thermal imaging and acoustic listening can pinpoint a hidden leak without disrupting the property, which matters when you’re trying to keep it bookable.
Water damage is usually covered as standard under buildings insurance, though commercial or holiday-let policies vary. Most policies also include trace-and-access cover, which pays for finding and accessing a leak, though it doesn’t cover the pipe repair itself. Check your schedule.
📍 Professional Leak Detection Across Scotland
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