Burglar signs: how burglars mark homes

Do burglars really mark houses?

Have you noticed unusual symbols on your front door, walls, or on the pavement nearby? It's natural to wonder whether these could be signs of criminal activity.

While there have been reports of markings being used to communicate between criminals, it's important not to jump to conclusions. Some marks may be harmless or unrelated. However, it's always wise to stay alert.

What are burglar signs? Myth vs reality

Burglar signs are markings or symbols that criminals use to identify and communicate information about potential targets. These often take the form of chalk marks or drawings on a wall near a front door.

Historical reports of burglar signs date back decades. Burglars or opportunists would discreetly leave chalk marks, scratches, or other subtle signs near properties to indicate whether a home was empty, occupied, or appeared vulnerable.

These so-called "burglar codes" have evolved in public imagination, and are often shared online - sometimes exaggerated or misunderstood.

While many people believe burglar signs to be an urban myth, marking houses for burglary is still done - and there have been occasional instances of markings being linked to organised crime.

What do official figures tell us about burglaries?

Burglary rates may have fallen over the past few decades, but the threat is still real. Homeowners are still encouraged to remain vigilant, report any suspicious activity, and consider practical security measures. This includes installing alarms, improving door and window security, and maintaining good visibility around their property, to help reduce the risk of becoming a target.

Why do burglars mark houses?

Burglars may leave small markings or subtle signs near a property to record useful information about its occupants. These marks can indicate details such as:

• Whether the residents are often away
• Whether the residents live alone
• Whether there are pets at the property
• Whether the residents appear vulnerable (for instance, if the home belongs to elderly individuals)

In some cases, burglar marks might also signal the presence of security systems, or indicate how easy it would be to access the property. As such, displaying visible security measures, such as alarm system stickers or CCTV signage, can deter potential burglars - and make your home less appealing to opportunists.

Where do burglars leave their signs?

Burglar signs may not always be obvious. In fact, they are more often than not going to be small and discreet, so as to avoid detection by homeowners and local authorities.

For criminals looking to target a home, the aim is to leave a signal without drawing attention. These markings could appear in subtle places, such as on a mailbox, doorbell, door frame, or even a doormat. Anywhere that allows information to be noted without being easily noticed.

Here's where to look for signs of a future burglary:

Are chalk markings on walls really used by burglars?

What do burglars use to mark houses? Are chalk markings on walls really used by burglars? Yes, chalk is a common method used by burglars to leave symbols, usually on the pavement, walls of the house, or doorframe.

However, criminals have also been known to use pieces of adhesive tape, stickers, string, bottles, and more.

What signs are used by burglars?

Wondering what symbols burglars use to mark houses? And how to tell a burglar's symbol apart from an innocent or accidental mark? Over the years, local police forces and authorities have deciphered the meaning behind many of these marks, meanings which are used like a code.

Use the list of common symbols below to learn more about how robbers mark your house:

Burglar signs about the habits of homeowners

There are also a handful of burglar signs with even more specific meanings, usually conveying information about the habits of the people at a certain address.

Scouting by burglars allows them to understand the nature of residents' movements, from which they are then able to deduce the most favourable moments for burglary. Here are the main symbols that relate to homeowner habits:

Other ways that burglars leave signs

Other than chalk lines, how else do robbers mark your house? It's been recorded that thieves have used permanent markers, scratch marks, and even stuck items to houses to check whether they are occupied and leave signals.

Here are some more ways in which burglars check whether houses are being left empty for prolonged periods or not:

As well as this, there may be certain objects that are used as burglar signs, such as a piece of folded paper or an upturned dustbin. Not everything is a symbol, but it pays to be vigilant.

In most cases, these will only be false alarms, but having an awareness of how thieves operate via markings can also save you from a burglary.

What do burglars look for in a target?

Knowing what thieves typically look for in a target home is helpful to improve the security of your property. Oftentimes, when choosing their next target, thieves will send scouts (usually at night) to inspect the properties and assets in a certain neighbourhood.

Here are some of the things they may be looking for as indicators of a worthwhile / easy target:

• A valuable vehicle parked visibly in the driveway
• Signs that a property is unoccupied (curtains closed for long periods, piled-up post)
• Expensive garden furniture or outdoor equipment left unsecured
• Valuables clearly visible from outside (jewellery, artwork, high-end electronics)
• Easy physical access to the property - no gate, low windows, flimsy fencing, or unsecured side/rear entrances
• Little or no visible security measures (no CCTV, alarm signage, motion lights, or guard dogs)

How to secure your home against burglars

Wondering, "how can I make my home less appealing to burglars?" The best way to reduce the risk of burglary is to stay mindful of your daily habits and take simple, proactive steps to strengthen your home's security.

Think of home protection as a process built around four key principles: discretion, deterrence, protection, and response.

At Verisure, we offer professional, monitored alarm systems that provide 24/7 protection and rapid response in the event of a break-in, giving homeowners valuable peace of mind.

Everyday security habits to keep your home safer

Don't overlook simple precautions when keeping your home secure:

• Always lock doors and windows, even when leaving for a short time
• Avoid hiding spare keys under mats, in mailboxes, or in flowerpots
• Store ladders, bins, or tools that could be used to climb or force entry
• Keep bushes and hedges trimmed to remove hiding spots near doors or windows

By combining these everyday habits with smart, visible, and connected security systems, you can create a home environment that's both welcoming and well-protected.

Social media security habits

Social media is a great way to share your life, but oversharing can unintentionally put your home at risk. Posting photos that reveal valuables, your home's interior, or details about holidays can give potential burglars clues about when a property is unoccupied, or what's inside.

To stay safe online and reduce the risk of burglary:

• Avoid posting your travel plans or holiday dates in real time
• Don't share images showing jewellery, vehicles, or expensive interiors
• Keep your social media profiles private and limit what strangers can see
• Be discreet about your daily routines, job details, or possessions

As part of broader home security tips, ask a trusted neighbour or friend to check your property and collect your post when you're away. Combining good digital habits with physical burglar protection is one of the best ways to secure your home.

Check for burglars observing your home remotely

In some rare cases, burglars may observe a property from a distance to assess its level of security. Staying aware of your surroundings is an important part of how to secure your home from burglars. If you notice anything unusual, such as unfamiliar cars parked nearby or people repeatedly loitering in your area, take precautions:

• Lock all doors and windows and keep valuables out of sight, including items in the garden
• Create the impression that someone's home by using smart lights or timers
• Report suspicious activity to the police, who can increase patrols if needed

Avoid throwing away sensitive information

It might seem harmless, but your rubbish can reveal more than you think. Packaging from luxury brands, tech products, or jewellery can hint at the value of items inside your home, especially when bins are left on the street.

To stay protected and secure your home from burglars, follow these home security tips:

• Break down or dispose of branded packaging at your local recycling centre
• Keep your bins locked or out of sight until collection day
• Consider installing an outdoor security camera to deter anyone snooping around your property

Be vigilant around delivery drivers & strangers

Staying alert to who approaches your home is another crucial part of how to secure your home from burglars. Some criminals use delivery drivers, canvassers, or imposters to gather information about a property's layout, valuables, or security systems. Some may even pose as tradespeople, surveyors, or new neighbours to gain your trust, and gather details about your home. Always verify their identity, and never feel pressured to allow entry.

To protect yourself:

• Don't let anyone in unless you're expecting a delivery
• Meet drivers outside your property instead of inviting them in
• Check with neighbours if similar visits have occurred
• Install a wireless doorbell camera or smart security camera to record visitors

What to do when you spot signs of a burglary or suspicious marks on your home?

If you notice unusual symbols or markings on or near your property, don't panic, but do take them seriously. Start by photographing the marks and reporting them to your local police or Neighbourhood Watch. Once documented, remove or cover the markings so they can't be used to share information.

It's also worth alerting your neighbours so everyone can stay vigilant and watch for similar signs. Take the opportunity to check your doors, gates, and windows for weak points, and consider adding visible deterrents like security lighting or CCTV.

For extra peace of mind, a monitored alarm system from a trusted provider such as Verisure can offer round-the-clock burglar protection, ensuring any attempted break-in triggers an immediate response.