Every business depends on secure access and at Arch City Locksmith, we make sure that access stays in your hands.
We specialize in commercial key duplication and rekeying services designed for offices, warehouses, schools, retail stores, and property managers across St. Charles, St. Peters, O’Fallon, Wentzville, and Maryland Heights.
Whether you need additional keys for authorized staff or a complete rekeying after employee turnover, our locksmiths provide professional, accurate, and controlled solutions that maintain your building’s integrity and protect your assets.


Keys are small tools with big responsibility. In a commercial setting, losing control over your keys can mean losing control over your security.
Our professional duplication and rekeying services ensure that only the right people have access to your property without the cost or disruption of replacing locks entirely.
We help businesses:
Every key we cut or system we rekey is handled with precision, care, and full accountability.
Rekeying changes the internal pins and tumblers of your existing locks so that old keys no longer work. It’s a cost-effective way to restore full security control without replacing the hardware itself.
During rekeying, we:
The result: your old keys become useless, and only the new authorized keys will operate your locks.
Rekeying is ideal after:


For higher-security environments, restricted key systems offer complete control over key duplication.
These keys use patented designs and specialized keyways that can only be copied by authorized locksmiths with manufacturer registration and client verification.
With restricted systems, you gain:
We register every restricted key to your business, ensuring only your designated managers can approve new copies.
If your property includes multiple entry points or departments, a master key system simplifies access control while maintaining security.
Our locksmiths design key hierarchies that allow owners or managers to access all doors while assigning individual keys for employees or departments.
Benefits of a master key system include:
These systems are ideal for offices, schools, and multi-unit commercial properties.


Key duplication isn’t just about cutting metal it’s about accuracy and control.
We use precision equipment calibrated to match manufacturer specifications for every brand and keyway. Our process ensures perfect duplication, preventing jamming or misalignment issues that come from low quality key copies.
Every duplicate we produce is tested for smooth operation and quality control before delivery.
Common key types we duplicate include:
Rekeying offers the same level of security as replacing locks — at a fraction of the cost and with less disruption to your business.
Instead of changing the entire lock assembly, our locksmiths adjust the internal mechanism to work with a new key. It’s an efficient way to restore control, especially when your existing locks are in good condition.
We recommend rekeying when:

We proudly support local businesses across St. Charles, St. Peters, O’Fallon, Wentzville, and Maryland Heights with trusted key duplication and rekeying services.
From small retail stores to corporate campuses, our clients depend on us for accuracy, security, and professionalism. We help protect what matters most your building, your data, and your peace of mind.
Regain full control over your building’s security with professional key duplication and rekeying from Arch City Locksmith.
Call Now: (314) 916-3177
Address: 2525 W Clay St Unit B, St. Charles, MO 63301
Website: archcitylocksmith.com
We’ll help you manage your keys with precision and confidence — so your business stays secure, organized, and protected.
A commercial access control system allows businesses to manage and restrict entry to their property using digital credentials like keycards, PINs, or smartphones. Unlike traditional keys, these systems track entry events for better security and accountability.
Yes. Our technicians can integrate access control systems with alarms, security cameras, and existing smart locks, ensuring unified protection across your business property.
Access control systems are ideal for offices, schools, warehouses, healthcare facilities, and multi-tenant properties that need secure, trackable, and easily managed entry points.
Absolutely. Every installation by Arch City Locksmith complies with local building codes, fire safety regulations, and ADA accessibility standards to ensure safe operation for all users.
Yes. Our cloud-based access control systems let administrators manage permissions, view entry logs, and generate reports from anywhere—making it perfect for businesses with multiple locations or departments.