21 Apr 2026
8 min read
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Your garage door is one of the easiest ways into your home, yet it’s often the most overlooked. If it’s not properly secured, it can become a quick access point for break-ins.
New Zealand has the highest burglary rate per capita in the developed world. According to the 2024 Home Security Index, the country scored just 1.30 out of 10, with 1,150 burglaries per 100,000 people. NZ Police data backs that up locally, with close to 45,000 residential burglaries recorded across the country in 2024 alone.
Most homeowners focus on the front door, windows, and alarm systems. The garage rarely gets the same scrutiny, despite being one of the largest openings in the house, often automated, and commonly connected directly to the interior.
This guide explains why garages are vulnerable to opportunistic break-ins, the common weak points, and how you can improve security.
Your garage door is the single biggest moving entry point on your home. If it's compromised, it gives access to vehicles, valuable tools, equipment, and in many cases, the rest of the house.
The internal door connecting the garage to your home is often a standard hollow-core door. It's weaker than a front door and is frequently left unlocked. For a burglar, getting through the garage door means the hardest part is already done.
Garages also tend to be partially hidden from the street, giving an intruder more time and privacy to work. In rural parts of the Waikato, Hawke's Bay and Gisborne, where properties are more isolated, garages and outbuildings are regularly targeted for tools, vehicles and equipment.
NZ Ministry of Justice data from the 2024 New Zealand Crime and Victims Survey found that vehicles are significantly less likely to be stolen when parked in a garage than in a driveway or on the street. A properly secured garage is a genuine deterrent, not just a nice-to-have.
Older openers with fixed codes. Some older automatic garage door openers broadcast a fixed frequency every time the remote is used. That signal can be intercepted with cheap, readily available devices. Modern rolling-code technology changes the access code with every use, eliminating this risk entirely.
If your opener is more than 10 years old, there's a good chance it still uses fixed codes.
No independent lock on the door. An automatic opener is convenient, but the door itself may not have a separate locking system. If the opener is bypassed or power is cut, there may be nothing physically holding the door shut.
The emergency release cord. This is a lesser-known vulnerability. On some garage door models, the manual release cord sits just inside the top of the door when it's closed. Using a simple tool like a wire coat hanger, someone can hook the cord from outside and disengage the door from the opener in seconds.
Unlocked internal doors. Most people treat the door between the garage and the house as an interior door and leave it unlocked. It should get the same attention as your front entry. Fit a solid-core door and a decent deadbolt at a minimum. A reinforced frame is even better.
Habit-based gaps. Leaving the garage door open while you're home, not closing it fully before heading out, or keeping a spare remote in an unlocked car. These are small things that create genuine exposure, particularly on weekends. NZ Police victimisation data shows break-in incidents spike on Saturdays and Sundays and during overnight hours.
Confirm your opener uses rolling code technology. Rolling code technology (covered above) is the baseline for a secure garage door opener. If you're unsure which system you have, an installer can quickly confirm it. If it doesn't, upgrading the opener is the first priority.
Add an electronic lock. An E-Lock automatically engages when your garage door fully closes, preventing it from being manually forced open, even if the opener is bypassed. It also addresses the vulnerability in the emergency release cord on compatible systems. Available wired or wireless.
Install a smart camera. A smart camera installed at your garage opening gives you remote visibility, motion detection alerts, night vision, and two-way audio. If you travel or work away from home, being able to check your garage from anywhere closes the awareness gap that makes garages attractive to would-be burglars.
Connect Wi-Fi control. Wi-Fi lets you check your garage door status remotely, get real-time notifications if the door is left open, and close it from anywhere via an app.
Add battery backup. Battery backup keeps the opener running during a power outage so the door stays locked and operational. That means no scrambling to operate the door manually during an outage.
Secure the internal garage-to-house door. As mentioned above, this is one of the most overlooked weak points. Fit a solid-core door and a decent deadbolt at a minimum. A reinforced frame is even better. Lock it every time, even when you're home.
Lock up side doors and windows. Add appropriate locks or security film to any additional access points within the garage. Trim bushes near garage windows so the area stays visible from the street. Sensor lights near entry points are a simple deterrent that discourages would-be burglars from approaching.
Use a wireless keypad instead of a handset. A Wireless Keypad eliminates the need to carry a remote control. Individual user codes can be set and changed, which reduces the risk if a handset is lost or stolen. Handy for families or when tradespeople need temporary access.
Build good habits. Close the door every time, even briefly. Don't store ladders or tools where they could help someone access upper windows. Keep spare remotes secure, not in an unlocked car.
Not every home needs the same approach. Here’s how to prioritise your garage door security based on your setup.
If your opener is older (pre-2010 or you're unsure of the technology), start by having an installer confirm whether it uses rolling code. If not, upgrading the opener is the foundation on which everything else builds.
If you have a modern opener but no accessories, adding an E-Lock and Wi-Fi control first gives you both physical lock protection and remote awareness. A smart camera and battery backup add meaningful coverage on top of that.
If you're frequently away from home or have a holiday property, smart cameras and Wi-Fi control are the highest-value additions. Remote visibility and the ability to close the door from anywhere dramatically reduce the chance of an undetected issue.
A Windsor Doors installer can walk through your setup and recommend the right combination for your situation. Our accessories are engineered to work with our opener range, avoiding the compatibility issues that can arise from mixing different brands and systems.
The garage is a meaningful part of your home's overall security. The good news is that most of the common weak points are straightforward to address. The right opener technology, an independent lock, remote monitoring, regular maintenance and a few good habits cover the majority of the risk.
Whether you're upgrading an older setup or adding to a modern system, our team can help you find the right combination for your home. Get a free measure and quote or visit the Windsor Doors showroom in Hamilton, or book a virtual consultation if you're not in the area.
Older openers that use fixed codes can be vulnerable to code-copying devices. Modern openers with rolling code technology have eliminated this vulnerability. If your opener is more than ten years old, it's worth having an installer confirm what system you're running.
An electronic locking mechanism that automatically engages when the door closes fully. It prevents the door from being manually forced open, even if the opener is bypassed or power is cut. It works independently as an extra layer of protection.
The key thing to check is whether it uses rolling code technology. This is usually noted in the product documentation or on the opener unit itself. Rather than trying to work it out yourself, your installer can confirm this during a routine inspection or service visit.
Without battery backup, you're relying on the manual release cord during an outage, which can create its own access risks. Battery backup removes that issue entirely by keeping the opener running as normal.
