Moving into a new property is exciting, but securing your investment should be an immediate priority. The most effective security strategy involves a layered approach, combining robust physical barriers (certified locks) with reliable electronic surveillance (alarm systems), reinforced by consistent security habits.

TL;DR: Always change the locks immediately upon getting the keys, as previous owners or tenants may still have copies. Next, assess the property’s vulnerabilities, focusing on doors and windows, and install or upgrade to accredited alarm systems (NSI or SSAIB certified) to create a comprehensive deterrent against unauthorised entry.

How Do I Secure My Property After Moving In (Locks, Alarm Systems)?

A secure home provides peace of mind and often affects your insurance premiums. In the UK, security standards are clearly defined, particularly concerning locks and professionally installed alarm systems. Understanding these standards is crucial, as non-compliant security measures may invalidate parts of your home insurance policy in the event of a claim.

Immediate Security Checks Upon Taking Possession

Before unpacking fully, it is essential to conduct a basic security audit of your new home. Focus on entry points that are easily accessible or visible from the street.

• Check Existing Locks: Even if the previous owner assured you the locks were changed, you cannot guarantee that spare keys were not circulated among family, friends, or contractors. Budget to replace or re-key all exterior door locks immediately.
• Assess Window Security: Ensure all ground-floor windows, and those easily accessible from flat roofs or porches, have working locks and secure closing mechanisms. Look for obvious signs of damage or forced entry on window frames.
• Patio and Sliding Doors: These are often weak points. Ensure multi-point locking mechanisms are functioning correctly and consider adding additional security bars or bolts.
• External Lighting: Check that existing external lighting (especially motion-sensor lights) is working correctly and covers vulnerable areas like the front door, rear access, and garages.

Prioritising Locks: The First Line of Defence

The lock is your primary physical deterrent. When upgrading locks in the UK, adhering to British Standards (BS) is vital for meeting insurance requirements.

Understanding BS 3621 and Insurance Compliance

Many UK insurance providers require certain exterior doors to be fitted with locks certified to BS 3621. This standard guarantees the lock has been rigorously tested against common burglar techniques, such as picking, drilling, and forcing.

If you have timber or conventional doors, look for the following secure lock types:

• Five-Lever Mortice Deadlocks: These are commonly found on wooden doors. For insurance purposes, they must display the BS 3621 kite mark stamp on the faceplate.
• Cylinder Locks (Euro Cylinders): Found primarily on UPVC, composite, and often newer timber doors. Standard euro cylinders are susceptible to ‘lock snapping’. You should upgrade these to high-security cylinders that are anti-snap, anti-bump, and anti-drill. Look for certification marks like Sold Secure Diamond (SS312) or TS007 (3-star rating).
• Multi-Point Locking Systems: Standard on UPVC and composite doors, these systems typically engage several locking points when the handle is lifted. Ensure all points engage smoothly and the accompanying euro cylinder is of a high-security standard (TS007 3-star).

For additional security on sheds, garages, and gates, always use high-quality padlocks and bolts that are certified by organisations like Sold Secure.

Installing or Upgrading Alarm Systems

While robust locks prevent opportunistic entry, a modern alarm system serves as both a powerful deterrent and a means of alerting you and potentially the authorities to a breach.

Types of Alarm Systems

Choosing the right alarm depends on your property type, location, and insurance requirements. Systems are broadly categorised by their response method:

1. Bells-Only Alarms: These sound a loud siren outside the property when triggered. They rely on neighbours or passersby reporting the incident. They are typically the simplest and most affordable option, but they do not automatically contact keyholders or the police.
2. Auto-Dialler Alarms: These systems automatically call pre-set phone numbers (usually keyholders) upon activation. They are a significant step up from bells-only systems, ensuring prompt notification.
3. Monitored Alarms: This is the highest level of security. The alarm system is linked to an Alarm Receiving Centre (ARC), which monitors the signals 24/7. If the alarm is triggered, the ARC verifies the activation and follows a pre-agreed action plan, which may include dispatching keyholders or contacting the police.

Accreditation is Key: NSI and SSAIB

For monitored alarms, and often for bells-only systems required by insurance, the system must be installed and maintained by an approved company.

In the UK, the two primary accrediting bodies for security system installers are the National Security Inspectorate (NSI) and the Security Systems and Alarms Inspection Board (SSAIB). Using an installer registered with one of these bodies ensures that the installation meets British Standards (such as BS EN 50131) and, crucially, that the alarm qualifies for a Unique Reference Number (URN) if police response is required.

If you opt for a DIY smart alarm system (e.g., Ring, Nest), understand that these usually function as auto-diallers or bells-only systems. While they offer excellent self-monitoring capabilities (via smartphone apps), they typically do not qualify for immediate police response unless they are linked to an accredited professional monitoring service.

General Security Best Practices and Deterrents

Physical devices are only part of the solution; good security habits and passive deterrents complete the system.

• Visibility and Lighting: Keep shrubs and hedges near windows trimmed to avoid providing cover for intruders. Install effective, timer-operated lighting or motion sensors in dark areas.
• Marking Possessions: Use forensic marking kits (e.g., SmartWater or SelectaDNA) to mark valuable items. This makes them traceable and less appealing to thieves.
• Neighbourhood Watch: Engage with your local community and consider joining or starting a Neighbourhood Watch scheme. Collaboration significantly increases local security awareness. For advice on setting up or joining a scheme, you can visit the official Neighbourhood Watch website.
• Key Management: Never leave spare keys under mats or in flowerpots. If you use a key safe, ensure it is robust, securely fixed, and ideally certified by the Loss Prevention Certification Board (LPCB).
• Securing Mail and Deliveries: Prevent identity theft by ensuring your mail is secure and arranging for packages to be delivered to secure lockers or trusted neighbours if you are not home.

Insurance Implications of Security Measures

Before purchasing insurance, or reviewing your current policy, carefully read the security conditions. Insurers often require specific measures based on the value of contents or the claim history of the area.

Requirements commonly include:

• All external doors and accessible windows must be fitted with specific types of locks (e.g., BS 3621).
• The alarm system must be set whenever the property is unoccupied for more than a set number of hours (e.g., 8 or 12 hours).
• For monitored alarms, the monitoring contract must be continuously active.

Failure to comply with these security warranties could lead to a claim being refused or reduced.

People also asked

How often should I test my home alarm system?

You should test your home alarm system, including motion sensors and contacts, at least once every three months. If your system is professionally monitored, contact your Alarm Receiving Centre (ARC) before testing to ensure they log the test signal correctly and do not dispatch police or keyholders unnecessarily.

Do internal doors need locks for security?

While internal doors typically do not require high-security locks (like BS 3621), they can be useful deterrents, especially for rooms containing high-value items or sensitive documents, slowing down intruders and protecting internal possessions should they gain access.

Is it worth installing CCTV cameras?

CCTV cameras serve primarily as a visual deterrent and an aid for evidence collection, rather than a preventative measure like a physical lock. Modern systems offer remote monitoring via smartphone, but ensure they are positioned to comply with UK GDPR laws, avoiding surveillance of neighbouring properties or public land unless necessary for security.

What is the difference between a deadlock and a sash lock?

A deadlock operates using only a key and bolt, providing simple, robust locking. A sash lock combines both a locking bolt (operated by key) and a sprung latch (operated by the handle) in a single unit, allowing the door to be latched shut when not fully locked.

Should I inform my insurance provider about new security measures?

Yes, always inform your insurance provider about significant security upgrades, such as the installation of a certified alarm system or the upgrade of all external locks to BS 3621 standards. Such improvements may qualify you for a reduction in your premium, and ensuring they have up-to-date information is essential for validating future claims.

Securing your newly acquired property is an investment in your safety and financial protection. By prioritising certified locks, integrating an accredited alarm system, and maintaining robust security practices, you establish a strong, compliant defence against potential risks.