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*The Angi rating for Locksmith Service companies in Sullivan, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Locksmith Service needs.

*The HomeAdvisor rating for Locksmith Service companies in Sullivan, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Locksmith Service needs.

Last update on March 28, 2026

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Avatar for SafeStreets - ADT Authorized Provider
SafeStreets - ADT Authorized Provider
4.8(
320
)
Security Safe - Install

Serving Sullivan, MO and surrounding areas

Approved (Corporate)

In business since 2010

Free estimates

Emergency services offered

"AWESOME buying experience and setup experience! I just bought a house and wanted to make sure I was protected. They even helped me find a fantastic locksmith who gave a me great deal. Can't recommend highly enough. He gave excellent advice and saved me money in the long run with their current promo. Look no further for the best security company!"
Additional Photos
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Additional Photos

+1

5 neighbors recently requested a quote
Recommended by94%of homeowners
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Avatar for ADT
ADT
4.5(
884
)
Security Safe - Install

Serving Sullivan, MO and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1874

Free estimates

Emergency services offered

"Walter and Glen at Protect Your Home Group with ADT are the best people to talk to in terms of security alarm. Being a locksmith myself I know how important it is to deal with the right people. I referred a lot of customers to them and so far they are happy with their service. I myself got one for my house. Thank you for a consistent service and great deal."
Home Security Essentials
Smart Home Security
Cameras
Our Team
Home Security Essentials

+35

52 neighbors recently requested a quote
Recommended by89%of homeowners
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Avatar for Matt's General Home Improvements
Matt's General Home Improvements
5.0(
22
)
Hardware, Latches & Tracks (Door) - Repair or Replace

Serving Sullivan, MO and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"Great prompt service, very good workmanship. Worked well with me re. project. Recommend him to future customers. Finished the work I have tried to get done for several weeks now by others and did it the next day!! Great guy !!"
Response time8 hrs
Recommended by85%of homeowners
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Avatar for LJC Painting
LJC Painting
5.0(
2
)
Hardware, Latches & Tracks (Door) - Repair or Replace

Serving Sullivan, MO and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

We specialize in interior and exterior painting services, cabinet painting, staining, and more! We guarantee your satisfaction, and we won't leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule a free estimate today!

Replaced decking
Finished product
TopShield installed
Finished Product
Before Paint

+1

6 neighbors recently requested a quote
Recommended by100%of homeowners
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Sean Redus
5.0(
1
)
Security Safe - Install

Serving Sullivan, MO and surrounding areas

Approved

Emergency services offered

Reliable, detail-oriented handyman with years of experience providing high-quality residential and commercial repair and maintenance services. I specialize in TV mounting, drywall repair, painting, door and lock repairs, furniture assembly, deck repairs, fixture installation, shelving, caulking, and general home maintenance. I take pride in delivering dependable workmanship, honest communication, and completing every job efficiently and correctly the first time. Whether you need a small repair or a larger project, I'm committed to providing professional service at a fair price and treating your home with respect. Customer satisfaction is always my top priority.

9 neighbors recently requested a quote
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Avatar for Frontpoint
Frontpoint
4.7(
8,819
)
Security Safe - Install

Serving Sullivan, MO and surrounding areas

In business since 2007

Free estimates

Emergency services offered

"I had a bit of trouble with my molding around the doors vs how the system was designed. The tech guy hung with me for 39 minutes until it was perfect. I called customer service a couple times after that with questions that came up. The customer service team are professional and knowledgeable."
Recommended by93%of homeowners
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ASAP Lock and Key, LLC
5.0(
4
)
LocksmithLocksmith - AutoLocksmith - For Business

Serving Sullivan, MO and surrounding areas

In business since 2008

Free estimates

Credit card accepted

ASAP Lock and Key, LLC, is the only call you need to make for all your lock, safe and safety needs. \n\nWe carry an extensive line of safety locks for your home, business, hotel, safe, school, and more. Our electric locks are great for multiple users, without having to worry about who has keys, who doesn�t have keys, and where your lost keys have gone! We can program digital codes into all of our electric locks, and only you give out the number to those who need it. We carry alarm, keypad, and proximity locks from top brand names, including Unican, Kaba, Securtron, and Simplex.\n\nGive us a call today. \n

Recommended by100%of homeowners
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Locksmiths questions, answered by experts

If you’re having an issue turning the key inside a lock, chances are there is dust or dirt buildup within the cylinder. The easiest solution is applying a dry lubricant to the lock, which loosens the dirt buildup. You may need to turn the key a few times for it to work properly again.

Door locks should be changed roughly every seven years. The average lifespan of a door lock is seven to 10 years, so it’s best to err on the side of caution and change them early, especially if they are showing signs of wear and tear. Examples of deterioration include visible rust and difficulty opening or closing the door. Some locks can work safely beyond 10 years, but it depends on how often they are used and whether they are exposed to damaging environmental conditions like precipitation or extreme temperatures.

If you don’t have your original key, the easiest way to obtain a copy is to call a locksmith. For house keys, your locksmith has several options for configuring a new key: 

  • They can input a lock’s identification code into a database to obtain key-cutting instructions.

  • They could analyze the lock cylinder to determine how to cut a new key.

  • They can create an impression of the lock cylinder from which to cut a new key. 

Lock bumping is a technique locksmiths use to quickly and quietly open a pin tumbler lock, typically found in most types of deadbolts. It involves inserting a specially crafted key, or bump key, into the lock and tapping or "bumping" it with a mallet or similar tool. The force applied causes the lock's pins to jump momentarily, allowing the lock to be turned and opened. Unfortunately, thieves also use this technique to break into homes. Luckily, products like a deadbolt strap will fortify your lock.

Standard residential deadbolt locks come with a steel bolt that locks your door into place using a key (or keypad) on one side and a thumb turn on the other. When you lock it, the bolt slides into a strike plate on your door jamb to secure your door shut.

The Sullivan, MO homeowners’ guide to locksmith services

From average costs to expert advice, get all the answers you need to get your job done.

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