Why Choose Ernie’s Lock Company?

We’re The Leading Comprehensive Locksmith in MD

Ernie’s Lock Company, Inc. is a full-service locksmith serving customers in Maryland and the DC Metro area. Since 1960, we have been building a reputation for reliable service, transparent pricing and exceptionally high quality work. No job is too big or too small — call us whether you need a house key cut or a complete commercial access control system installed in your facility.

We also offer lockout services if you’re locked out of your car, home or business. One call to Ernie’s is all it takes! Keep reading to learn about the full selection of mobile locksmith services we offer Maryland-area customers.

Commercial Locksmith Services

Commercial locksmith services are the core of our business. Our team can install master key systems and other access control solutions that give you peace of mind and protect your valuable assets from theft and vandalism. We also sell and install safes and vaults for additional protection for your most important items.

Based in Riverdale Park, MD, we offer commercial locksmith services throughout Maryland’s Prince George’s County, including Hyattsville and College Park. For select jobs, we can also travel to Bowie, Towson, Crofton, and Capitol Hill. To find out if we offer commercial service in your area, give us a call today!

Residential Locksmith Services

Ernie’s is proud to provide residential service to some of MD’s most prestigious addresses. Visit our head office for while-you-wait key duplication and other routine services. We also provide house calls for new lock installations, lock repairs, rekeying and other work. Working with some of today’s leading manufacturers, including Schlage, Medeco and others, we strive to offer high-quality residential solutions at a range of price points.

On-site residential locksmith services are available for homes, condos and apartment buildings in the greater Riverdale Park area, including Rockville, Greenbelt, Cheverly, New Carrollton, and nearby municipalities. Visit our office in person at 4500 Queensbury Road, or call to book an appointment at your convenience.

Lockout Services

Lost your keys, locked yourself out of your car or home, or need a repair? Help from Ernie’s is just a call away. We can send a licensed technician who will fix the problem quickly and get you back on track before you know it. Unlike other locksmiths, we don’t gouge customers when they need us most — expect the same fair, upfront pricing and friendly service we provide for all of our lock and key work.

In order to ensure a prompt response for all customers, our lockout services are limited to customers located within Prince George’s County, MD. Call us at 301-277-1126 for immediate attention.

Maryland’s Local Locksmith Since 1960

Count on Ernie’s to provide reliable, expert lock and key services. We back up all of repairs and new system installations with a 90-day workmanship warranty. Our technicians arrive on time and work diligently to minimize disruption to your home or business. For larger jobs or ongoing service, we’ll send the same technician each time to ensure you are working with someone who understands your property and your larger needs. It’s this commitment to great service that has made us a Maryland institution for more than 55 years.

Get in touch with Ernie’s today for more information about our residential, commercial and lockout services, or learn even more about Ernie’s Lock Company, Inc!

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For All Your Locksmith Needs!

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Our Services

    Commercial & Residential

  • High Security & Restricted Keyways
  • Key Duplication
  • Key Cutting
  • Custom Master Key Systems
  • Lock Rekeying
  • Lock Installation
  • Lock Repairs
  • Door Hardware Installation
  • Electrical Access
  • Keyless Entry
  • Safes & Vault Sales
  • Safes & Vault Unlocking Services
    Lockouts - *Within 10 Miles

  • Automotive Lockouts
  • Residential Lockouts
  • Commercial Lockouts

Store Hours

  • Monday – Saturday: 8 AM – 7 PM
  • Sunday: CLOSED


Ernie's Lock Company, Inc. believes in full transparency when it comes to pricing! We always provide honest, competitive and up-front pricing to our customers - we don't like sticker shock. Call our licensed locksmiths today for pricing & custom quotes!


Proudly serving Maryland and Washington, D.C
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