If your business has experienced employee turnover, lost keys, or a security incident, rekeying your commercial locks is the safest way to regain control over access without replacing every lock. At Arch City Locksmith, we provide reliable, on-site commercial rekeying services throughout the St. Louis metro area.
We help business owners, managers, and property managers reset key access, improve internal security, and ensure that former employees or unauthorized persons no longer have entry to your commercial property. Our mobile locksmiths bring all necessary tools and equipment directly to your St. Louis business location for efficient, professional rekeying service.

Rekeying is significantly less expensive than replacing all your locks, saving your business money while maintaining security.
Rekeying can be completed professionally on-site without the need to remove and replace hardware, minimizing business disruption.
Your current locks and hardware remain in place, preserving your building’s appearance and avoiding compatibility issues.
Old keys are rendered useless professionally, ensuring former employees or lost keys no longer provide access to your St. Louis business.
We can create or update master key systems during rekeying to improve access control and management.
Our mobile service comes to your location and works efficiently, allowing your business to continue operating with minimal interruption.
We rekey locks for:
Our locksmiths are trained to rekey a wide range of commercial-grade lock systems:
We work with brands like Schlage, Corbin Russwin, Yale, Sargent, Mul-T-Lock, Medeco, and more.
We evaluate your current lock systems, identify which locks need rekeying, and discuss your access control needs and security concerns.
Our technicians inspect each lock to ensure it’s in good working condition and compatible with rekeying. If repairs are needed, we address them before proceeding.
We remove the lock cylinder, replace the internal pins with a new configuration, and reassemble the lock so that only your new keys will operate it.
If requested, we set up or update your master key system to provide management with access to multiple areas while restricting employee access to specific zones.
We test each rekeyed lock to ensure smooth operation, provide you with new keys, and document the key control system for your records.
Many business owners wonder what professional deadbolt installation actually involves. The process is more thorough than simply drilling a hole and dropping in a lock cylinder. A qualified locksmith follows a structured sequence to ensure the hardware seats correctly, the bolt extends fully, and the strike plate holds under real pressure. Here is how Arch City Locksmith approaches every commercial installation.
Before any hardware is touched, the technician evaluates the door material (wood, hollow metal, aluminum), frame construction, and existing bore holes. This determines the correct backset, bolt throw length, and any reinforcement needed. A door that is warped, cracked, or improperly aligned will undermine even the strongest deadbolt, so this step guides every decision that follows.
Using the assessment findings, the locksmith selects the appropriate deadbolt model from professional-grade manufacturers. Door thickness, bore diameter, and the intended security level all factor into the choice. For businesses pairing the deadbolt with a commercial keypad or smart lock system, compatibility with electronic components is verified at this stage as well.
If a new bore is required, a hole saw sized to the lock body is used to create a clean, centered opening. The deadbolt cylinder and tailpiece are then seated and tested for smooth rotation before the face plate is secured. Precise boring prevents binding, which is one of the most common causes of premature lock wear in commercial settings.
A deadbolt is only as strong as its strike plate mounting. Standard builder-grade strike plates often use short screws that anchor into door casing rather than the structural frame. Our installations use heavy-duty strike plates secured with 3-inch screws that reach into the door frame stud, significantly increasing resistance to kick-in attempts. For metal doors, we use appropriate anchors for the substrate.
Once the hardware is mounted, the technician cycles the bolt repeatedly to confirm smooth throw and retraction. The door is closed and relocked several times from both interior and exterior sides. Any minor adjustments to the strike box or bolt height are made before the job is considered complete. You receive a full walkthrough of how the lock operates and what to watch for over time.
Not every deadbolt works on every door. Commercial properties use a wide range of door constructions, from solid wood to hollow-core steel, aluminum storefront frames, and glass-panel entries. Selecting hardware without accounting for door type, thickness, and daily traffic volume is one of the most common mistakes made in commercial security upgrades. Here are the key factors that guide our hardware recommendations.
Standard commercial doors run 1-3/4 inches thick, but some specialty doors differ. Backset, the distance from the door edge to the center of the bore hole, must match the lock body. Mismatched backsets cause binding and reduce the effective bolt throw, weakening the overall installation.
Hollow metal, solid wood, aluminum, and fiberglass doors each require different drilling techniques and anchor hardware. A lock installed correctly on a wood door may need a completely different approach on a hollow-metal frame common in warehouses and industrial facilities across Wentzville and O'Fallon.
Commercial-grade deadbolts from reputable manufacturers include hardened steel inserts, security pins, and anti-rotation collars not found on residential hardware. For higher-risk entry points, we recommend cylinders that carry high-security lock ratings with pick-resistance certifications.
For businesses managing multiple staff members, restricted keyway systems prevent unauthorized key duplication. Unlike standard hardware store keys, restricted keyways can only be cut by authorized locksmiths, giving you a documented chain of custody for every key issued.
A standard deadbolt throws one inch. For commercial applications with heavier doors or higher traffic, a 1-1/2 inch throw provides greater engagement with the frame and improves resistance to forced entry. This is particularly important for main entrances that see constant daily use.
Deadbolts frequently need to coexist with commercial door closers, panic bars, and access control systems. We verify that the chosen lock body does not conflict with existing hardware mounting positions, avoiding costly rework after installation.
One of the most common questions property managers and business owners ask is whether they need a full lock replacement or whether rekeying the existing hardware is sufficient. Both are legitimate options, and the right choice depends on the condition of the lock, the circumstances that professionaled the review, and your long-term security goals.
Rekeying changes the internal pin configuration so old keys no longer work. It does not change the physical lock body, meaning existing vulnerabilities in the hardware remain if any are present.
If you are unsure which route makes sense for your property, our locksmiths can evaluate the existing hardware and give you an honest recommendation. There is no obligation to upgrade if rekeying accomplishes your security goal. You can also review our commercial deadbolt repair and replacement service for situations where existing locks need assessment before a full decision is made.
Commercial deadbolt installation is not just a security decision. Depending on your business type, industry, and location, the hardware on your doors may have implications for building code compliance, insurance coverage, and liability. Understanding these factors before a break-in or audit is far better than learning about them after an incident.
The International Building Code, which Missouri adopts with local amendments, includes requirements for door hardware on certain commercial occupancy types. Businesses in healthcare, education, and assembly occupancies often have specific locking requirements tied to fire egress regulations. Properly installed deadbolts must not interfere with emergency exit hardware on designated egress routes. Our team is familiar with these requirements and installs hardware accordingly.
Commercial property insurance policies frequently include language about the type and grade of locks required on covered premises. Some insurers mandate ANSI Grade 1 deadbolts on all exterior entry points, and failure to comply can affect your ability to file a claim after a break-in. Before upgrading, it is worth reviewing your policy language or asking your insurer directly about lock rating requirements.
The American National Standards Institute and the Builders Hardware Manufacturers Association grade commercial door hardware on a three-tier scale. Grade 1 is the highest rating and is designed for demanding commercial applications. Grade 2 suits lighter commercial use, and Grade 3 is residential. Arch City Locksmith installs Grade 1 hardware across all primary commercial entry points for maximum durability and compliance support.
The Americans with Disabilities Act requires that hardware on accessible entry points be operable without tight grasping, pinching, or twisting of the wrist. Standard keyed deadbolts alone may not satisfy this requirement on primary accessible entrances. In those cases, a combination of a keypad or smart lock paired with a deadbolt, or a lever-operated exit device, may be the appropriate solution.
Any door on a required means of egress cannot be fitted with a lock that requires a key or special knowledge to open from the inside during an emergency. Double-cylinder deadbolts, which require a key on both sides, are restricted on fire exit routes under NFPA 101. Our team ensures that double-cylinder locks are only placed on appropriate doors and that all exit routes remain compliant with commercial panic bar and exit device standards.
Businesses in healthcare, finance, and legal services may be subject to data protection standards that include physical security requirements for server rooms, records storage, and office areas. Installing commercial high-security locks on restricted areas is a practical way to document physical access controls as part of a broader compliance program.
Serving St. Charles, St. Peters, O'Fallon, Wentzville, and Maryland Heights. Call to schedule a site assessment.
We offer rekeying services to support:
We’ll help you design a key plan that balances convenience with control.
Arch City Locksmith provides fully mobile rekeying services throughout:
We bring all tools, parts, and key blanks directly to your commercial site.
Yes, if the lock is in working condition and accessible, we can rekey iteven if it wasn’t originally installed by us.
Phone: 314-916-3177
Address: 2525 W Clay St Unit B, St. Charles, MO 63301
Hours: 8:00 AM – 10:00 PM, 7 days a week
Service Area: St. Charles, St. Peters, O’Fallon, Wentzville, and beyond
Commercial Lock Installation, Commercial Lock Repair, Commercial High-Security Lock Installation, Commercial Keypad Lock Installation, Commercial Safe Installation.
We verify access using IDs, business registration, business cards, lease agreements, or employee verification. This protects both you and the property owner.
Yes. We service smart locks and electronic access control systems, including keypads, card readers, and app-connected locks.
In most cases, no. We use professional-grade tools to unlock the door without damaging the lock. If the lock is faulty or damaged, we can replace it on-site.
Yes. We regularly assist property managers with tenant lockouts, rekeying, and full access control solutions.
Protect your business with secure, convenient commercial rekeying. Arch City Locksmith is your trusted mobile locksmith in the St. Charles area, serving offices, warehouses, and retail spaces with professionalism and discretion.
Call Now: (314) 916-3177
Service Hours: 8:00 AM – 10:00 PM, 7 days a week
On-Site Rekeying: St. Charles, O’Fallon, Wentzville, St. Peters, and beyond