Expert Mobile Locksmith & Security Camera Installation Services

We install security & alarm systems and provide mobile locksmithing services to customers in West St. Louis County, St. Charles County, Franklin County & beyond.

Your Locally Owned & Trusted Security Experts

Do you need a security camera system for safety and peace of mind? Do you have trouble accessing a locked door, safe, or room in your office?

Our locksmith technicians are experienced in installing & troubleshooting Roton, Kwikset, Schlage, Hager, Sargent, Kaba, Yale & WiFi security systems for people looking for enhanced security.

Gateway Lock & Security Cameras is a second-generation family owned & operated security and locksmith company that has brought security to a new level for clients for 50 years. We pride ourselves in providing affordable prices for mobile locksmith assistance, security camera installation & upgrades to safety. Our goal is to meet your needs, exceed your expectations, and leave you with a positive impression of our business and of the security and locksmith industry.

Your satisfaction with our services is very important to us. No matter your situation, our security specialists will complete the task you bring to them.

All of our technicians are bonded, licensed and insured, and have undergone background checks. We strive to be the best locksmith in Chesterfield, and our team is trained on everything you would expect from the best locksmith and security specialists near you.

We are quickly available for on site locksmith service, Camera Installation, ( All Makes), alarm installation and service, or any other security services required.

Our Security and Locksmith Services

Gateway Lock & Security installs security cameras where you can monitor your home whether you are at home or away. Even if you believe your neighborhood is safe, stuff can happen. READ MORE

and locksmith

Gateway Lock & Security offers professional, personal service and will provide you with a trained security specialist that will assess all of your security needs. READ MORE

and locksmith

Gateway Lock & Security offers a wide range of commercial security and locksmith solutions that can be tailored to best fit your business needs by our security specialists. READ MORE

Gateway Lock & Security has come to my rescue twice. This company is amazing. The response time is unbeatable. The locksmiths are professional and extremely efficient. I would highly recommend this company to anyone in need of help.

Jen Panasci


Why Choose Gateway Lock & Security

Today’s Technology, Old Fashioned Service

Gateway is a local family owned and operated business, not a large, impersonal corporation with a call center in another state. Our friendly locksmith and security technicians are courteous, professional and do the job right the first time. We require the best service, commitment, and support from our team of technicians which is passed onto our customers. Whether it is a factory requiring a security camera digital video recording system or a sticking doorknob at your home, we are there to get the job done, and done right.

We are here for our customers, and we are here because of our customers. That is reflected in our positive attitude, and level of customer service. When you contact us, you will not be greeted with the “run of the mill” service technicians who give you the feeling that you are bothering them. When you set up an appointment with us, you will get an exact appointment time for your convenience.

The Latest News

Celebrating 60 Years of Locksmith Services in Chesterfield!
We're celebrating over 60 years in business as a reliable locksmith company you can depend on in Chesterfield,  MO. Since[...]
Guide to Commercial Keyless Entry Systems
Most of the population today has experienced keyless entry systems. Whether it’s the key fob to open and lock car[...]
Top 6 Advantages of High Security Locks
Security should always be a priority for business owners. How else can you protect your business from theft, burglary and[...]