How to keep an eye on an empty second home all year

Keeping an eye on a second home left empty all year relies on three complementary lines of defence: eyes in the neighbourhood, regular visits that leave a written record, and sober technical detection focused on water, temperature and opening. The rhythm is set by the season and by the neighbourhood, with a systematic reinforcement in winter. Remove any one of these three lines, and the remaining two are rarely enough to prevent the damage that was brewing. This article builds on our guide to managing French property from abroad, in the “Owning from afar” category.

Why does an empty property deteriorate quickly without monitoring?

A lived-in home maintains itself almost unnoticed: windows are opened, a stain is spotted, a repair happens on the spot. Left empty, the same house or flat silently accumulates small problems that become large ones. Damp settles behind a piece of furniture, a tap seal gives out over a wooden floor, a displaced tile lets in the first autumn rain.

To this are added the risks specific to absence: frost that bursts a poorly insulated pipe, break-in attempts that first target properties whose letterbox is overflowing, rodents looking for shelter at the first cold snap. All this damage has one thing in common: the later it is discovered, the more it costs. Monitoring is therefore not the luxury of an anxious owner, it is the first line of savings and peace of mind.

Why is the neighbourhood the first line of defence?

The neighbourhood remains the fastest and cheapest sensor: a glance at the facade, an anomaly noticed, a message sent. It still has to be organised. Introduce yourself when you return, explain that the property is empty for most of the year, exchange direct contact details, and agree on what the neighbour will and will not do: alerting, yes, intervening, no.

A few gestures multiply the effectiveness of this human relay:

• Give a number reachable from abroad, with the acceptable time difference for being woken up.
• Ask to be alerted about visible mail, a broken window, a ringing alarm or an unusual smell.
• Offer the reverse: keep an eye on the neighbour’s home during their own absences.

This relay has its limits, and they must be accepted: a neighbour does not enter your house, does not read your meters and documents nothing. They see the outside, not the inside. This is precisely why it exempts you from neither of the two following lines.

Second line: regular, documented visits

The regular visit is the heart of the system. Someone enters, checks, documents and reports back: dated photos of every room, water and electricity meter readings, the condition of the openings, anomalies noted. Each visit produces a report you archive, and the series of reports becomes the property’s memory, proof of consistent monitoring that is useful to an insurer and to a future sale.

This is exactly the purpose of an inspection visit with a report: each call follows the same brief from one time to the next, the photos can be compared with each other, and a new anomaly is spotted immediately. For the operational detail, point by point, read our article on inspection visits with a photo report.

Two rules make all the difference. Regularity first: visits spaced irregularly leave windows of several months without a witness, and it is in those windows that damage settles. The record next: a visit without a report has almost no value, neither for you following from a distance, nor for an insurer looking for proof of serious upkeep.

Third line: sober technical detection

The useful technology for an empty property is short and targeted. There is no need to turn the house into a fortress: a few simple devices cover most of the risks:

• A water leak detector placed under the sink, behind the washing machine and under the cylinder, coupled where possible with a solenoid valve that shuts off the supply.
• A temperature and humidity sensor that alerts you if the interior drifts towards freezing or if the moisture level climbs.
• Opening contacts on the front door and accessible windows, linked to a simple alert on your phone.
• Controlled interior lighting, switched on at varying hours to give the impression from the street that someone is home.

This equipment warns, but it does not record: an alert always calls for human verification. To document a condition at a given moment, an on-demand photo and video capture usefully completes the system, for example before and after a marked weather episode, or to show a specific point to a tradesperson. Technical detection therefore remains an alert line, not a substitute for visits.

How often should visits happen, by season and neighbourhood?

The right rhythm depends on three variables: the season, the property’s exposure to bad weather and the human presence around it. The table below gives the orders of magnitude we apply, to be adjusted to your situation:

Property profile	Base rhythm	Winter reinforcement	If neighbours live nearby all year
Isolated house	One visit per month	One visit every two weeks, plus after every frost or strong-wind episode	Monthly rhythm maintained, neighbour alerted to any visible anomaly
Flat in a co-owned building	One visit every six to eight weeks	One visit per month, frost-protection setting of the heating checked	Lightened visits, caretaker and neighbours as alert relays
Property in the mountains	One monthly visit outside the snow season	One visit after every heavy snow or frost episode	Same, with access clearing where necessary
Property on the coast	One monthly visit, heightened damp vigilance	One monthly visit, check after every reported storm	Same, neighbours mobilised after high tides and storms

Two signals must always trigger an unscheduled visit: a marked weather episode in the property’s region, storm, prolonged frost, heatwave or heavy rain, and an alert from the neighbourhood or a sensor. The rest of the time, regularity beats frequency: a monthly visit kept up all year is worth more than closely spaced visits followed by a long silence.

What does a useful report contain, proof by proof?

A monitoring report is only useful if it can be compared with the previous ones. Its fixed content must be the same on every visit:

• Dated photos of every room, always taken from the same angles.
• The water and electricity meter readings, compared with the previous reading.
• The condition of the openings, shutters and front door.
• The indoor temperature noted and the heating setting.
• New anomalies, described and photographed.
• The letterbox emptied, evidencing a regular presence.

Sent on the very day of the visit, this document serves three purposes: informing you without travel, alerting you without delay to what must be dealt with, and proving to an insurer or a neighbour that the property is seriously monitored. It is this continuous proof that turns a series of visits into genuine surveillance.

To read further, from the absent owner’s seasonal calendar to handling emergencies, browse the Journal’s maintenance category.

Would you like to put in place the system that suits your property, between neighbourhood, visits and detection? The personal study offered by French Realty helps assess the lines of defence useful in your precise situation, with your dedicated contact.