We’re the Big Dogs of Lock Repair & Rekeying

Request the help of a trusted lock and key service

Residential & Commercial Locksmith Service, Master Key Systems | Denver, CO

Locking yourself out is easy to do. You’re running late for work and forget to grab your purse. You’re rummaging in your briefcase and your keys slip out. You accidentally leave your keys in the ignition. When you’re stranded in Denver, CO, call Big Dog Lock-N-Key at 303-777-7144. Our local locksmiths are always prepared to rescue you.

We have a reputation for speedy service and offer free estimates on lock repair jobs. We’re even accredited with the Better Business Bureau. Major corporations trust us for lock and key services – and you should, too. Next time you’re in a jam, you know who to contact.

Big Dog Lock-N-Key has 14+ years of experience

The Big Dog Lock-N-Key crew has been around the block a few times – and no, we weren’t scoping out your home. For the past 14 years, our locksmiths have dutifully repaired damaged locks and shared security advice with Denver, CO homeowners. Our aim is to safeguard you and your family from burglaries. Life is unpredictable, but we do our part to maintain security in your neighborhood.


  • Lockout Services
  • New Lock Installation
  • Electronic Lock Installation
  • Residential Lock Rekeying
We proudly provide security solutions and lock keying.

  • Big Dog Lock-N-Key

    Denver, CO 80209


    Call Us
    Phone: (303) 777-7144

    Mon: 8:00AM-6:00PM
    Tue: 8:00AM-6:00PM
    Wed: 8:00AM-6:00PM
    Thu: 8:00AM-6:00PM
    Fri: 8:00AM-6:00PM
    Sat: By Appt
    Sun: By Appt