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Jeff Carroll is now our Go To locksmith. Everything you want, including knowledgeable. His rates are fine, and they become excellent once you see that he analyzes right away what needs to be done and does it efficiently on first try, from a well-stocked truck. He even unstuck a stubborn, sticky door as he put in the new lock.

Ed M, DC

via Washington Consumers’ Checkbook

Jeff Carroll

Master Locksmith

Full Service Locksmith


Residential lock services include installations and repairs. Locks opened, rekeyed, masterkeyed. Deadbolts installed. Keypad locks. Security peep holes (door viewers). We service all brands – including Schlage.


Commercial services include: Property management companies. Masterkey systems. Panic devices. Door closers. Stand alone electronic access. All types of commercial lock hardware.

Over 30 Years Experience

Serving Montgomery, Frederick, Carroll and Howard Counties

We offer affordable, dependable and professional service to residential and commercial customers – including property management companies.

We service all brands – including Schlage. We accept Visa, Mastercard, Discover and American Express credit cards.

For service you can count on, please call Jeff today!

(301) 762-1272.

Auto service (openings only)

Emergency service

High security locks & deadbolts

Access control and safes

Hours of Operation:

Mon – Fri. 8:00am – 5:00pm
Sat. 8:00am – 1:30pm
Sunday Closed

Service You Can Trust

We will provide free estimates on all jobs. We are licensed, bonded and insured.

Well Reviewed

We have great reviews on Google, and have been awarded the Angie’s List Super Service Award multiple times.

Licensed, Registered & Certified

Maryland Locksmith Licensing Program

About Jeff

Master Locksmith Jeff Carroll has been providing residential and commercial customers with security and peace of mind for over 30 years.

He and his family live in Mount Airy, Maryland.

Protect the things that matter most to you, call Jeff today at (301) 762-1272.




Jeff is great! He came by to change my locks today. He was very nice and personable. His fees are really reasonable. I highly recommend Jeff and Carroll's Locksmithing!

Kayla S

via Google

Jeff Carroll is a fantastic locksmith who works all over the Metropolitan area. If you are looking for someone who is prompt, effective and affordable then he is the best you can find!

Josette S

via Yelp

Awesome service! He came within the hour in the rain and was courteous and quick. I would definitely use his services again!

Ruinwen D

via Google