Over 40 Years Experience

Serving Cook, DuPage, Lake, Kane and McHenry Counties


Welcome to

North Star Lock Service

We specialize in rekeying locks, camera systems, digital locks and access control systems to keep your home or business secure.


Did you know that 9 out of 10 convicted burglars agree that they avoid a home or business protected by a camera system? Let North Star Lock Service guide the way to your safety and security!



Chicagoland has counted on North Star Lock Service lead the way to safety and security matter where the office is. We can re-key your existing locks or even discuss keyless entry options.


Safety and Security

How secure is your business when you’ve locked up for the night? How safe do you feel about your home while you’re away? North Star Lock Service can ease your mind with a system that is best for you to protect your home or business.

Call us today at (847) 456-4873 to discuss options for:

  • Residential Hardware
  • Commerical Hardware
  • High Security Key Systems
  • Keyless Entry
  • Replace old worn-out Hardware
  • Camera Systems
  • Door Closers
  • Steel Doors and Frame

Licensed and Insured

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Yes, we are certified and registered with Cook County and other surrounding counties in the Chicagoland area.

CRL Certified Locksmith
IL #191-000312

Warranty Period

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Although we do offer warranties on our products and services, it varies depending on what your needs are. Call us to find out more details.

Request Quote Before Hiring

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Like our warranties, rates vary depending on the service you’re requesting. We can provide you with an estimate before you decide to hire us.

Request Quote →

Serving Chicagoland for 40+ Years

Experienced in a wide variety of projects

We get the job done right the first time

“We’ve had work done by North Star Lock Service and highly recommend them to anyone! Jim Carpenter has replaced steel doors, installed video monitoring systems, electric strike pad on our entry door and more. He’s reasonable in price and easy to work with, a great sense of humor!”

Sandra L.

Palatine, IL

“Jim has been my go-to locksmith for over 10 years. He has been very responsive every time I have needed his help. Jim can do it all–he has changed locks, installed deadbolts, repaired locks, installed key card systems and installed a security camera system. Every time I have worked with Jim, he has been prompt, efficient, pleasant and economical. I would definitely recommend Jim for all your locksmith needs.”
Donna P.

Woodstock, IL

“Jim got me squared away with new locks for my new home. Great service and highly recommended!”

Jeff S.

Port Barrington, IL