Residential Locksmith Services

Keeping Local Homes Safe Since 1979

Your home should be the safest place in the world—and that’s where we come in. Since 1979, AA Key and Lock Services has been the trusted residential locksmith in Overland, MO, offering reliable and affordable services to homeowners throughout St. Louis and St. Charles counties.

Whether you’re locked out late at night, upgrading your home security, or repairing damage after a break-in, our licensed and insured locksmiths are here 24/7 to restore your peace of mind.

Lock Installation & Replacement

Whether moving into a new home or upgrading your security, we install and replace all types of locks, including deadbolts, smart locks, and keypad systems.

Rekeying & Key Services

Avoid the expense of replacing all your locks. Rekeying changes your locks to new keys while keeping your existing hardware. We also offer key duplication, broken key removal, and master key systems for simplified access.

Emergency Home Lockouts

Locked out of your house? Our mobile locksmiths are available 24/7 to get you back inside quickly and safely without unnecessary damage to your doors.

Break-In Repairs & Security Upgrades

From cash drops to sensitive documents, our safe services keep your most valuable assets secure.

We provide:

• Sales & installation of commercial-grade safes
• Electronic safe upgrades & combination resets
• Maintenance & repairs on fire-rated, drop, and GSA-approved safes

Residential Safes

Protect valuables and important documents with in-home safe services. We provide sales, installation, electronic safe upgrades, combination resets, and maintenance for a variety of home safes.

Additional Security Enhancements

We also install peepholes, exit bars, alarmed bars, and other hardware designed to keep your home safe and accessible.