BRUNNENSTR. 8
10119 BERLIN

Our 24/7 hotline:

030 - 250 55 118

+49 176 62 22 37 55

Special offer! The lowest price in Berlin

Your security partner and locksmith in Berlin

Welcome to KEY-PROBLEM.NET, your partner for security in Germany – based in the heart of the capital Berlin. We offer full-service around safety for your home and business. Your cheap locksmith welcomes you in our store in Berlin Mitte, Brunnenstrasse 8 (near U Rosenthaler Platz). Perfectly located and easy to reach from Alexanderplatz, Prenzlauer Berg, Kreuzberg and Wedding.

Copy keys from only 4,50 euro

Since 2007 our specialists working successfully, offering you the best service around your keys for a cheap rate in Berlin and Brandenburg.
We copy, duplicate, repair and manufacture keys for locks of all types and safety classes. Started with keys for doors, mail boxes, safes, gates, cellar-doors up to bikes, motorbikes and cars. Even keys for old types of locks are possible to duplicate or repair. We always do the right thing for you, with the utmost rationality and quality!

The prices vary depending on the model and safety class of the key. Standard keys, for example mail box keys, costs always 4,50 euro. While special keys for lockings systems costs around 30,00 euro.

Lock Systems for your door

We introduce the best way for protecting the door of your apartment, home or office. Top Burglary protection by Swiss Sector – worldwide shipping and installation in Berlin and Brandenburg. (coming soon)

Swiss Sector Bar Lock

For Home, Office etc.


The fundamental new and most secure way for access protection!


Our wide product range:

Convince yourself of our excellent quality and selection of our products. In our store you will find high-quality products for the security of your home, business and life, Key accessories, locks, master key systems, bike locks, padlocks, door locks, locking cylinders and security accessories like video surveillance, alarm, burglar protection, etc. Also doing well proven and certified Vpn-product from the company Swiss Sector like cross-bolt locks and bar locks.

Full Service:

You have lost your key?, broke your key? or left the key in the apartment behind a closed door? Our experts from the emergency assistance service open the door and will install a new system of locks, if you want. Just contact us via the contacts specified phone number above (if possible during the week).

We help you in the purposes of Security and Protection against burglary – how to make a cost-effective and reliable protection against theft, whether it's a private house, apartment, or your business store. We arrange everything individually or in mass production – for example for your office, nursing home, kindergarden or hotel. In our range of products of selected partners we will find a guaranteed solution for you and take care of the organization and installation.

Make a telephone inquiry or contact us by e-mail with your desired product or service.

You will find us in the heart of the capital Berlin:

You can reach us easily by public transport: we are in close proximity to the metro station U-Bahnhof «Rosenthaler Platz» as well as the tram station «Rosenthaler Platz» on the lines M8 и M1. Or by car - free parking on the street Brunnenstraße included.