As an English-speaking expat or international resident in Germany, protecting your home is both a practical and financial priority. One of the most straightforward ways to improve your home security—and potentially reduce your insurance costs—is upgrading your door locks to certified, higher-security models. German insurers take security seriously, and many offer measurable premium reductions when you invest in recognized safety improvements.
This guide explains how lock upgrades affect your German home insurance premiums, which certifications matter, and what steps you need to take to claim your discount. Whether you're renting or own your property, understanding these requirements can help you make informed decisions about your home's security and your wallet.
How German Insurers Evaluate Lock Security
German home insurance companies classify locks by their resistance to forced entry, following standards set by the Deutsches Institut für Normung (DIN) and international organizations like the European standard EN 1303. Insurers assess locks based on their certification class, material quality, and installation method. A standard key-turn cylinder lock offers minimal protection, while multi-point locking systems with reinforced strike plates and hardened steel components provide significantly better security.
When you file a claim after a break-in, insurers will investigate whether your locks met their minimum security requirements. If they find your locks below standard, they may deny or reduce your payout. This is why many German insurers offer premium discounts—they recognize that better locks reduce the likelihood of successful burglaries and, consequently, claim payouts. Discounts typically range from 5% to 15%, depending on your insurer and the specific lock certification.
Some insurers require written proof of lock installation from a certified locksmith, while others accept manufacturer certificates or inspection reports. It's essential to clarify your insurer's specific requirements before upgrading, as documentation is crucial for claiming any discount.
Certified Lock Standards That Insurers Recognize
The most widely recognized lock certification in Germany is the DIN 18251 standard, which categorizes locks into grades (Klasse) from 1 to 4. Grade 3 and Grade 4 locks are what German insurers typically recognize for premium discounts. DIN 18251 Grade 3 locks offer enhanced durability and resistance to manipulation, making them ideal for most residential properties. Grade 4 locks provide the highest residential security level, with reinforced cylinders and advanced anti-drill, anti-pick features.
Another important certification is EN 1303, which is the European standard for lock cylinders. Locks meeting both DIN 18251 and EN 1303 standards are considered premium security solutions. Additionally, the VSK (Verband Schließ- und Sicherheitstechnik) certification mark indicates products tested for quality and durability by independent bodies. Many German insurers also recognize insurance-approved locks marked with the VdS or VdS (European Insurance Approved locks) seals, which guarantee compliance with strict security testing.
When selecting a new lock, ask your locksmith or hardware supplier for documentation confirming which standards the lock meets. Keep all certificates and installation records—your insurer will need these to process your discount request.
Steps to Claim Your Insurance Discount
After upgrading your locks, contact your German home insurance provider to inform them of the improvement. Most insurers have a formal process for reporting security upgrades. You'll need to provide proof of installation, typically in the form of a receipt from a certified locksmith, the lock's certification documents (DIN/EN numbers), and sometimes photographs of the installed locks. Submit this information to your insurer's claims or policy management department—do not assume they'll automatically apply a discount.
Request a written confirmation of the discount in writing, specifying the percentage reduction and the date it becomes effective. Some insurers apply discounts retroactively from the installation date, while others require approval before the work is done. For renters, inform your landlord and your insurer, as you may need landlord consent for permanent lock modifications. In some cases, renter's insurance (Hausratversicherung) provides separate security discounts independent of the building's locks.
Keep all documentation for at least the duration of your insurance contract. If you move or change insurers, you can present this proof to your new provider to negotiate a discount from day one.
Common Mistakes to Avoid
One frequent mistake is upgrading locks without first checking your insurance policy's security requirements. Some policies have minimum lock grades or specific approved products listed. Installing a lock that doesn't meet your insurer's criteria means you won't qualify for a discount and could even jeopardize your coverage in case of a break-in. Always contact your insurer before purchasing and installing new locks.
Another common error is using an unregistered or uninsured locksmith. German insurers may deny discounts if the installation wasn't performed by a certified professional. Choose a locksmith registered in your region (Handwerkskammer) and request documentation of their credentials. Finally, don't discard packaging, certificates, or installation paperwork—these are essential proof of your security investment when claiming discounts or filing claims.
Frequently Asked Questions
Not automatically. You must have the right certification (typically DIN 18251 Grade 3 or higher) and provide proof of installation. Each insurer sets its own discount criteria, so contact your provider first. Some offer discounts; others may require locks as a minimum condition for full coverage without specifying a discount amount.
Discounts generally range from 5% to 15% of your annual premium, depending on your insurer and the lock certification level. Some insurers offer higher discounts for multi-point locking systems or smart locks. Request a specific discount estimate from your insurer before investing in an upgrade.
For insurance discount purposes, most German insurers require installation by a certified, registered locksmith (Handwerker registered with the Handwerkskammer). Self-installation typically disqualifies you from claiming the discount and may void your coverage in case of a break-in. Always use a professional and obtain their certification documentation.
You may upgrade your lock with your landlord's written permission, but you'll need to remove it when you move unless the landlord agrees otherwise. Renter's insurance (Hausratversicherung) sometimes offers separate security discounts. Consult your renter's insurance policy and your landlord before making changes.
Typically, you'll need: an invoice or receipt from a registered locksmith, the lock's certification documents (showing DIN 18251 or EN 1303 compliance), the locksmith's business registration proof, and sometimes photographs of the installed locks. Check with your specific insurer for their exact documentation requirements before upgrading.
English-speaking locksmiths available 24/7 across Germany.