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Should I Change The Locks When I Buy A House?

When you purchase a new home, one of the most crucial steps to ensure your safety and security is changing the locks. By changing locks on a new house, you gain control over who has access to your property, significantly enhancing your home security. Previous owners, tenants, or even contractors might still have keys, posing a potential risk. Changing the locks provides peace of mind and an opportunity to upgrade to more advanced security options. 

This guide will explore the reasons for changing locks, the various types of locks to consider, and professional advice on securing your new home, ensuring you make informed decisions for optimal protection.

Why Change Locks When You Buy a New House?

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1. Security Concerns

One of the primary reasons to change locks after buying a house is the potential security risk posed by previous owners or occupants. They may still possess keys, and there’s always a chance that unauthorised copies of keys exist. Additionally, contractors, real estate agents, or even friends of the former owners might have had access to the property at some point. Changing the locks ensures that you are the only one with keys to your new home, eliminating these security risks.

2. Peace of Mind

Knowing that only you and your trusted individuals have access to your new home provides immense peace of mind. This reassurance is particularly important in the initial stages of moving in, as you adjust to your new environment. Changing the locks allows you to start fresh, knowing that your home is secure.

3. Upgrading Security

Moving into a new home is the perfect opportunity to upgrade your security. Older locks may not offer the same level of protection as modern ones. By installing newer, more secure locks, you can enhance your home’s overall security. Additionally, consider integrating smart home security systems that offer advanced features such as remote access, monitoring, and notifications.

4. Compliance with Home Insurance

Home insurance policies often have specific requirements regarding the security of your home. Failing to change the locks after moving in could potentially invalidate your home insurance. Many insurance providers require that locks meet certain standards, such as the British Standard Institute (BS3621) in the UK. Changing your locks to meet these standards not only ensures compliance but also enhances your home’s security.

Different Types of Locks to Consider


Deadbolts are a popular choice for securing main entrances due to their robustness and resistance to forced entry. Available in single-cylinder and double-cylinder varieties, deadbolts provide a high level of security for your new home. Single-cylinder deadbolts have a keyed entry on one side and a thumb turn on the other, making them convenient for interior use. Double-cylinder deadbolts require a key on both sides, offering extra security but necessitating a key for exit in emergencies.

High-quality deadbolts are made from hardened steel and often feature anti-drill, anti-pick, and anti-bump technologies. These features make deadbolts a reliable and proven method for securing doors, offering peace of mind and enhanced protection for homeowners.

Smart Locks

Smart locks provide a modern solution for home security, offering convenience and advanced features. Controlled remotely via smartphone apps, smart locks allow you to lock and unlock doors from anywhere. Many brands offer models that integrate with other smart home devices, such as Amazon Alexa, Google Assistant, and Apple HomeKit, enhancing your overall home security system. 

Features include automatic locking, guest access codes, and activity logs that track who enters and exits your home. These advanced functionalities make smart locks a versatile and effective choice for contemporary home security.

Mortise Locks

Mortise locks are known for their durability and high security, making them a preferred choice for both residential and commercial properties. Installed within the door itself, mortise locks are more resistant to tampering compared to surface-mounted locks. These locks feature a complex mechanism, often requiring professional installation, which further enhances their security. 

High-quality mortise locks can include additional security features such as anti-pick and anti-drill components. Their robust construction and long-lasting performance make mortise locks an excellent choice for homeowners seeking a reliable and secure locking solution.

Euro Cylinder Locks

Euro cylinder locks are widely used in the UK, offering varying levels of security to meet different needs. High-quality euro cylinders, come with anti-snap, anti-pick, and anti-drill features, which significantly enhance their resistance to common break-in techniques. 

These locks are versatile and can be easily replaced without changing the entire lock mechanism, providing a good balance of security and convenience. Their ease of installation and reliable performance make euro cylinder locks a popular choice among homeowners looking to enhance their home’s security.

British Standard Locks

Locks that meet British Standards, such as BS3621, are recognised for their high security and reliability. These locks undergo rigorous testing to ensure they can withstand various forms of attack, including drilling, picking, and forced entry.

Insurance companies often recommend British Standard locks, and having them installed can sometimes lower your insurance premiums. Choosing locks that meet BS3621 provides peace of mind, knowing that your home is well-protected with a trusted and tested security solution.

Why I Should Change Locks When I Buy A New House

Changing the locks when you buy a new house is a crucial step in ensuring your home’s security. By addressing potential security concerns, gaining peace of mind, upgrading to modern locks, and complying with home insurance requirements, you can protect your new investment. Consult a professional locksmith for the best advice and proper installation to maximise your home’s security. Remember, taking these steps not only enhances your safety but also contributes to your overall peace of mind as a new homeowner.

Residential Locksmith Services Across the South Coast

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To ensure the utmost security for your home, it is crucial to complement your lock choice with other security measures like property lighting, alarm systems, and reinforcement of entry points. Consulting with a professional locksmith such as ourselves at Veteran Locksmiths will help you select and install the most secure locks for your specific needs. We offer residential locksmith services across the South Coast including lock changes, upgrades, and 24-hour locksmith assistance. Contact us today to arrange a free quotation to enhance the security of your home.

Frequently Asked Questions

Do You Need to Change Locks on a New Build?

Yes, even if you are moving into a newly built home, it is wise to change the locks. Construction workers, contractors, and real estate agents may have had access to the keys.

When Should I Change Locks After Moving House?

Ideally, you should change the locks immediately after taking possession of the property. This minimises the risk of unauthorised access during the transition period.

Will Not Changing My Locks Invalidate My Home Insurance?

Some insurance policies may require you to change the locks when you move into a new property. Failing to do so could potentially invalidate your coverage. Check your policy details and consult with your insurance provider.

Why Change Locks When You Buy a New House?

Changing locks guarantees that you are the only one with access to your home, protecting you from potential security breaches.

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Murray - Veteran Locksmiths


Murray is a seasoned locksmith with a wealth of expertise in the field. As the founder of Veteran Locksmiths, he combines his extensive knowledge of locks and security, with years of experience servicing the South Coast delivering excellent locksmithing solutions. Murray's dedication and commitment to exceptional service has earned him a reputation as a trusted and reliable expert in the industry.

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Veteran Locksmiths

Local mobile locksmith offering emergency, commercial and domestic locksmith services. Covering the whole of Hampshire, West Sussex and Surrey.


01428 748277

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