How Burglars Case Houses in Adelaide: What They Look For and How to Stop Them

Most people imagine burglars as calculating criminals who spend weeks planning an elaborate break-in. The reality, based on extensive research including offender interviews conducted by the Australian Institute of Criminology (AIC) and South Australia Police (SAPOL), is far less dramatic but far more useful to understand. The majority of residential burglaries in Adelaide are opportunistic. Offenders make quick decisions based on visible cues, and understanding those cues gives you the power to make your property a harder, less attractive target.

This article draws on published criminological research, SAPOL crime prevention advice, and the practical experience we have gained working with Adelaide homeowners who have been targeted. The aim is not to frighten you but to give you an honest, evidence-based understanding of how casing behaviour works so you can take practical steps to counter it.

What Does "Casing" Actually Mean?

Casing is the process of observing and evaluating a potential target before committing to a burglary. It can range from a few seconds of assessment while walking or driving past a property, to more deliberate observation over several days. Research from the AIC categorises most residential burglary into two broad types:

• Opportunistic burglary: The offender is moving through an area (on foot, bicycle, or in a vehicle) and notices a property that presents an easy opportunity — an open window, an empty-looking house, no visible security. The decision to target the property is made in the moment, with minimal pre-planning. This accounts for the majority of residential break-ins in Adelaide.
• Targeted burglary: The offender has a specific property or type of property in mind and conducts deliberate reconnaissance beforehand. This is more common with higher-value targets and is associated with more organised criminal activity. It is less common overall but does occur in Adelaide, particularly in affluent suburbs where higher-value items are expected.

Understanding that most burglary is opportunistic is genuinely empowering, because it means relatively simple measures can significantly reduce your risk. An offender making a snap judgment will bypass a property that looks harder to enter in favour of one that looks easier. You do not need to make your home impenetrable — you need to make it less attractive than the alternatives.

The Visual Cues Burglars Look For

Research based on interviews with convicted burglars, including a landmark Australian study by the AIC, reveals a consistent set of factors that offenders assess when evaluating potential targets. These findings have been corroborated by SAPOL crime prevention officers and are consistent across multiple Australian and international studies.

1. No Visible Security

The absence of visible security measures is the single strongest signal that a property is a soft target. Offenders report that they specifically look for the absence of: security cameras, alarm system signage or external sirens, sensor lighting, security screens or reinforced doors, and dogs.

A 2019 study cited by the Victorian Department of Justice found that 60 to 70 percent of surveyed burglars said they would be less likely to target a home with visible CCTV cameras. A separate study found that visible cameras and alarm systems together deter approximately 53 percent of potential break-in attempts. These are not marginal numbers — visible security eliminates more than half of potential offenders from even considering your property.

2. Signs of an Empty Home

An unoccupied home is a far more attractive target than an occupied one. Offenders look for these indicators:

• Accumulated mail and parcels: A full letterbox or parcels sitting on the doorstep for hours signals nobody is home. In Adelaide, where mail is typically delivered mid-morning, a letterbox that remains full into the evening is a clear indicator.
• Bins left out: Bins left on the kerb well past collection day indicate an extended absence. This is visible from a moving vehicle and is one of the first things an offender driving through a street will notice.
• No car in the driveway: An empty driveway during working hours is expected, but an empty driveway for days or at unusual times suggests a longer absence.
• No lights on after dark: A house that remains completely dark through the evening is a strong indicator of absence, particularly during winter when darkness falls by 5:30 pm. This is especially noticeable in Adelaide's established suburbs where homes are visible from the street.
• Drawn curtains during the day: While curtains closed at night are normal, curtains or blinds closed during daylight hours suggest either absence or a desire for privacy, both of which can signal opportunity to an offender.

3. Concealment and Easy Access

Offenders need to approach the entry point, attempt to gain access, and exit the property without being seen. Properties that provide natural concealment make this significantly easier:

• Overgrown hedges and vegetation: Dense hedges along the front fence, shrubs around doors and windows, and overgrown gardens provide cover for an offender to work without being observed by neighbours or passing traffic. This is particularly relevant in Adelaide suburbs with established gardens, such as Unley, Burnside, and Norwood, where mature vegetation can screen entire frontages.
• High solid fences: While high fences provide privacy, they also provide concealment once an offender is inside the property boundary. The offender can work on a door or window out of sight from the street and neighbouring properties.
• Rear laneway access: Properties backing onto laneways are more attractive targets because the laneway provides an approach and escape route that is less visible than the street. This is common in Adelaide's inner suburbs, including parts of Norwood, Prospect, and Goodwood, where laneways run behind rows of homes.
• Corner blocks: Corner properties have two street frontages, which might seem like they would be harder to target. In practice, the side boundary of a corner block often has a lower fence and less surveillance from neighbours, creating an additional approach route. Offenders value having multiple escape options.

4. Weak Points in Physical Security

While casing, offenders also assess the physical security of the property, looking for:

• Old or flimsy doors: Hollow-core doors, sliding doors without security bars, and doors with visible gaps around the frame are all weaknesses that an experienced offender can identify at a glance.
• Single-pane windows: Older single-glazed windows, particularly those without locks or security screens, are easy to force or break quietly.
• Unlocked side gates: A side gate that swings open when pushed is an invitation to explore the less visible rear of the property.
• Open garage doors: A garage left open displays what is inside (tools, bicycles, vehicles) and may provide direct access to the house.

5. Visible Valuables

Items visible from outside the property serve as both motivation and confirmation that the property is worth targeting:

• Electronics visible through windows: Large televisions, computer setups, and gaming equipment visible from the street or footpath.
• Packaging at the kerb: Discarded packaging for expensive items (televisions, laptops, gaming consoles) left in recycling bins or at the kerb advertises recent purchases.
• Tools and equipment in the yard: Power tools, bicycles, and outdoor equipment left unsecured in the yard or on a verandah.
• Delivered parcels: With the growth of online shopping, parcels left on doorsteps for hours are increasingly common — and increasingly targeted.

Common Casing Behaviours to Watch For

While most casing is rapid and difficult to detect, more deliberate casing sometimes produces observable behaviours. SAPOL and Neighbourhood Watch SA advise residents to be alert to:

• Unfamiliar vehicles driving slowly through the street: Particularly if the same vehicle appears on multiple occasions or if the occupants appear to be observing properties rather than navigating.
• Door knocking with no legitimate purpose: Offenders may knock on the front door to establish whether anyone is home. If nobody answers, they may attempt to enter. If someone answers, they will have a pretext ready — asking for directions, looking for a lost pet, or claiming to be a tradesperson checking the neighbourhood.
• Photographing properties: While this can have innocent explanations (real estate, architecture), photographing the entry points and access routes of a specific home is a potential casing indicator.
• Unusual marks or flyers: There have been reports across Australia of offenders leaving small marks (stickers, chalk marks) on letterboxes or fences to identify targeted properties. While the prevalence of this is debated among criminologists, it remains something to be aware of.
• Checking gate latches and door handles: Some offenders will test whether gates and doors are locked while passing on foot, particularly along quiet streets and laneways. This can appear casual enough to avoid suspicion but is a clear indicator of casing behaviour.

Adelaide Crime Patterns: Where and When

Understanding Adelaide's crime patterns helps you assess your own risk and prioritise your security measures. Our Adelaide crime statistics guide covers this in comprehensive detail, but here are the key patterns relevant to casing behaviour:

Geographic Patterns

SAPOL data shows that property crime is concentrated in several areas across Adelaide's metropolitan area. The northern suburbs (Elizabeth, Smithfield Plains, Salisbury) and southern suburbs (Morphett Vale, Christie Downs) consistently record higher burglary rates than the metropolitan average. However, affluent suburbs like Burnside, Unley, and Norwood also experience targeted burglary, often with higher average losses per incident.

Importantly, burglary rates can vary significantly between neighbouring suburbs. A suburb with excellent Neighbourhood Watch engagement and high security system adoption can have markedly lower burglary rates than a neighbouring suburb with similar demographics but less community engagement. This reinforces the point that individual and community-level security measures genuinely make a difference.

Temporal Patterns

Weekday daytime hours (9:00 am to 3:00 pm) remain the peak period for residential burglary across Adelaide. This is the window when most homes are empty due to work and school. Summer months (November through February) see higher overall break-in rates, driven by open windows, holiday absences, and longer daylight hours for observation. During winter, evening break-ins become proportionally more common as darkness falls earlier.

Repeat Victimisation

Research by the AIC has consistently found that properties that have been burgled once are at significantly higher risk of being burgled again within the following 12 months. This phenomenon, known as repeat victimisation, occurs because the offender now has knowledge of the property's layout, entry points, and vulnerabilities. If they were successful the first time and the security has not been upgraded, there is little reason for them not to return — particularly if they noticed additional items of value during the first entry. If your property has been targeted, upgrading your security promptly is one of the most effective steps you can take.

How Security Systems Counter Casing Behaviour

Every element of a well-designed security system directly counters one or more of the casing factors described above.

Visible CCTV Cameras

Cameras address the offender's need for concealment. A visible camera at the front of the property signals that any approach will be recorded. Even if the offender is willing to proceed, the footage provides evidence for identification and prosecution. Cameras positioned at entry points and along approach routes directly counter the casing process by making the offender visible at every stage. For optimal placement advice, see our CCTV camera placement guide.

Alarm Systems with Visible Signage

An alarm system with a visible external siren and signage counters the offender's calculation of risk versus reward. The risk of triggering an alarm that alerts neighbours, the monitoring centre, and the police fundamentally changes the equation. Even the signage alone provides a deterrent — offenders report that they treat alarm system signage as credible and will often bypass properties displaying it.

Sensor Lighting

Motion-activated lighting counters the offender's preference for darkness and concealment. An offender approaching a property at night who is suddenly illuminated is highly likely to abort the attempt. Sensor lighting also improves the quality of CCTV footage by providing supplemental illumination, making any recorded footage more usable.

Access Control

Access control systems counter the "testing the locks" casing behaviour. A smart lock that does not have a traditional keyhole cannot be picked. A gate with an electronic lock and intercom controls who can enter the property boundary. The audit trail provided by access control means you know exactly when any entry occurred and can be alerted to unusual access patterns.

Intercom Systems

Video intercom systems directly counter the door-knocking casing technique. When you can see and speak to the person at your door without opening it — from anywhere via your smartphone — the offender's ability to establish whether you are home without revealing their intent is eliminated. You can respond to the intercom from work, from holiday, or from the back of the house, maintaining the perception of occupancy at all times.

Case Studies: How Properties Are Selected in Adelaide

While we cannot share specific client details, the following scenarios are representative of patterns we have observed through our work across Adelaide and are consistent with the criminological research discussed above.

Scenario 1: The Unoccupied Character Home

A homeowner in an inner eastern suburb left for a three-week overseas holiday. The property had no alarm system, no CCTV, and no sensor lighting. The letterbox was not being collected, and the front garden — screened by a dense privet hedge — provided complete concealment of the front door from the street. The property was broken into through the rear laundry door within ten days of the owner's departure.

Analysis: the property presented multiple casing cues simultaneously — accumulated mail, no signs of occupancy, no visible security, and extensive concealment from vegetation. Any one of these factors alone increases risk; the combination made the property highly attractive to an opportunist.

Scenario 2: The Visible Alarm System

A home in a northern Adelaide suburb had an alarm system installed with an external siren and security company signage. Over a six-month period, three neighbouring properties without alarm systems were burgled. The home with the alarm was not targeted. When one of the burglars was apprehended and interviewed by police, they confirmed that they had observed the alarm signage and bypassed the property in favour of homes without visible security.

Analysis: this aligns directly with the research — visible security measures redirect opportunistic offenders to softer targets. The alarm system's value was not just in its detection capability, but in its deterrent visibility.

Scenario 3: The Door-Knock Test

A homeowner in a southern Adelaide suburb noticed a stranger knocking on their front door at 11:00 am on a weekday. The homeowner happened to be working from home and answered through their video intercom without opening the door. The stranger claimed to be looking for a lost dog and moved on. Two days later, a neighbour's property (where nobody was home when the same person knocked) was broken into through the back door.

Analysis: the door-knock test is one of the most common casing techniques. The video intercom allowed the homeowner to respond without opening the door, maintaining security while establishing that the property was occupied. The offender moved on to a property where no response confirmed absence.

The Psychology of Target Selection

Understanding the psychological framework behind target selection provides additional insight into why certain measures are more effective than others.

Risk-Reward Calculation

Every offender, whether they articulate it explicitly or not, makes a rapid risk-reward calculation: Is the potential gain (items to steal) worth the potential cost (being caught, being identified, being injured)? Security measures work by increasing the perceived cost side of this equation. A visible camera dramatically increases the perceived cost because it means the offender is being recorded. An alarm system increases it further because it means the response will be immediate. Strong physical security (quality locks, security screens) increases it by making the entry itself more difficult, time-consuming, and noisy.

Displacement vs Deterrence

A common criticism of home security is that it merely "displaces" crime rather than preventing it — the burglar skips your house and breaks into your neighbour's instead. This is partially true for individual properties, and it is why community-level engagement (Neighbourhood Watch, collective security adoption) is so valuable. However, research from the AIC has also found that at an area level, when security adoption reaches a critical mass, overall crime rates in that area decline. This is because offenders who consistently encounter security begin to shift their activities to other areas entirely, or in some cases, desist from offending altogether. Your individual security contributes to this collective deterrence.

The "Not Worth It" Threshold

There is a tipping point where the number and quality of security measures create a perception in the offender's mind that the property is simply not worth the risk. Research suggests that this threshold is reached relatively early in the layering process. You do not need to turn your home into a fortress. A visible camera, an alarm sign, sensor lighting, and locked doors and gates are typically sufficient to push an opportunistic offender's calculation firmly into "not worth it" territory.

Practical Steps to Make Your Adelaide Home Harder to Case

Based on everything discussed above, here are the most impactful actions you can take, roughly in order of cost-effectiveness:

1. Lock everything, every time: Doors, windows, gates, garage. Make it automatic. SAPOL data shows that a significant proportion of Adelaide break-ins involve no forced entry at all — the offender simply found an unlocked entry point.
2. Install sensor lighting: Cover every approach point and entry. This is inexpensive, easy to install, and highly effective at deterring night-time attempts.
3. Make security visible: If you have cameras and an alarm, make sure they are visible from the street. If you do not yet have a system, even credible security signage provides some deterrent value (though we strongly recommend backing it up with an actual system).
4. Maintain your property: A well-maintained property signals active occupancy and engagement. Trim vegetation around entry points, keep the lawn maintained, collect mail and bins promptly.
5. Vary your routines: Avoid establishing a perfectly predictable daily pattern. Use timer switches for lights. Vary the times you leave and return home. Park in different positions.
6. Know your neighbours: Active neighbourhood relationships are one of the most effective security measures. A neighbour who knows your routine will notice unusual activity. Neighbourhood Watch groups formalise this mutual awareness.
7. Install a proper security system: A professional CCTV and alarm system provides the strongest deterrent, the best evidence capture, and peace of mind that your property is protected whether you are home or away.

Neighbourhood Watch and Community Awareness

While individual security measures protect your property, community-level awareness protects your entire street and suburb. Neighbourhood Watch South Australia (NHWSA) is one of the state's longest-running and most effective crime prevention programs, and its principles are directly relevant to countering casing behaviour.

How Neighbourhood Watch Counters Casing

Casing relies on the offender being anonymous and unobserved. In a street where residents know each other, look out for each other's properties, and report unusual activity, the offender's anonymity is compromised. Key community actions that counter casing include:

• Knowing your neighbours: If you know who lives on your street, you will notice strangers. An unfamiliar person walking slowly along the street, checking gate latches, or sitting in a parked car for an extended period is more likely to be noticed and reported in a street where residents are engaged.
• Sharing information: If you see something unusual, tell your neighbours. A WhatsApp group, Facebook group, or simple conversation over the fence can alert the whole street. Many Adelaide suburbs have active community groups on social media that share local crime alerts.
• Reporting to SAPOL: SAPOL actively encourages reporting of suspicious activity on 131 444. You do not need to be certain that a crime is being committed — if something feels wrong, report it. SAPOL uses these reports to identify patterns and deploy resources to emerging hotspots.
• Collective security adoption: Streets where multiple homes have visible cameras, alarm systems, and sensor lighting create an area-level deterrent. An offender casing a street where every second home has visible security is far more likely to move on to a different area entirely.

Starting a Neighbourhood Watch in Your Street

If your street does not have an active Neighbourhood Watch group, SAPOL can help you start one. The process involves identifying a coordinator (often just someone willing to organise an initial meeting), connecting with the local SAPOL Community Safety Officer, and establishing a simple communication channel. Even informal arrangements — agreeing with your immediate neighbours to keep an eye on each other's properties and report anything unusual — provide meaningful benefit.

Technology and Anti-Casing

Modern security technology provides several features specifically designed to counter casing behaviour, beyond the basic deterrent effect of visible cameras and alarms.

AI-Powered People and Vehicle Detection

Modern CCTV systems with AI analytics can distinguish between people, vehicles, and irrelevant motion (animals, trees, shadows). You can configure alerts specifically for human presence in defined zones — for example, an alert when a person is detected loitering near your gate during weekday hours. This is far more actionable than generic motion alerts and can provide early warning of casing activity.

Number Plate Recognition

If a vehicle is repeatedly observed in your street, number plate recognition (ANPR) cameras can capture the registration for reporting to police. While dedicated ANPR cameras are primarily commercial products, some modern residential cameras have sufficient resolution and positioning to capture plate numbers of vehicles in the driveway or immediately outside the property.

Smart Notifications and Geofencing

Smart alarm systems can send you push notifications when your alarm sensors detect unexpected activity. Geofencing automatically arms your system when your phone leaves the property, ensuring your home is always protected when you are away. This eliminates one of the most exploitable vulnerabilities: the home that is unoccupied and unarmed.

Cloud-Connected Cameras

Cameras that upload footage to the cloud provide an important anti-casing advantage: even if an offender disables or steals the camera (or the NVR), the footage captured before that point is safely stored off-site and can be provided to police. This is particularly relevant for properties that have been identified as targets, where the offender may attempt to neutralise the security system as part of the break-in.

Frequently Asked Questions

Do burglars actually case houses in Adelaide?

Yes. Research from the Australian Institute of Criminology confirms that most burglars conduct some form of assessment before targeting a property, ranging from a few seconds of visual assessment while passing by to deliberate observation over multiple days. The level of casing depends on whether the burglary is opportunistic or targeted.

What time of day are Adelaide homes most likely to be cased?

Casing can occur at any time, but deliberate observation is most common during the mid-morning to early afternoon when the offender can assess whether the property is occupied during typical working hours. Evening observation is also common, as an unlit home after dark is a strong signal of absence.

Are certain Adelaide suburbs more targeted than others?

Yes. SAPOL data shows higher burglary rates in suburbs like Elizabeth, Smithfield Plains, Morphett Vale, and Christie Downs. However, affluent suburbs also experience targeted burglary with higher average losses. See our Adelaide crime statistics article for detailed suburb-level data.

Do fake security cameras deter burglars?

Fake cameras may deter some opportunistic offenders, but experienced burglars can often identify them by the lack of cabling, the absence of infrared LEDs, and their cheap appearance. More importantly, a fake camera provides no evidence if a burglary does occur. We strongly recommend investing in real cameras rather than decoys.

What the Research Tells Us: Key Statistics

These figures underscore two points: the threat is real and ongoing, and the measures that counter it are well-evidenced and effective. The research is not ambiguous — visible, well-maintained security systems genuinely reduce your risk.

A Note on Scare Tactics

The security industry has a long history of using fear to sell products. We believe this is counterproductive. Fear-based selling leads to over-specified systems, unnecessary expense, and a sense of helplessness that does not serve the homeowner.

The reality is more empowering than the scare tactics suggest. Most burglary is opportunistic. Most offenders are deterred by relatively simple measures. You do not need a military-grade security installation. You need locked doors, good lighting, visible cameras, an alarm system you actually use, and engaged neighbours who look out for each other. These measures, implemented thoughtfully and consistently, provide genuine, evidence-based protection for your Adelaide home.

How The Alarm Guy Helps

We approach every security assessment from the perspective described in this article: what would an offender see when they look at your property? We assess the visible security, the access points, the concealment opportunities, the lighting, and the physical security of your doors and windows. Then we design a solution that addresses the specific vulnerabilities we identify.

Every property is different. A cottage in Norwood has different casing risks than a modern home in Seaford or a Hills property in Stirling. We tailor our recommendations to your specific property type, suburb, and lifestyle — and we never recommend more than what is genuinely needed.