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5.0

(15 reviews)

Top-rated locksmiths.

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Verified Reviews for Locksmith Service pros in Harrington, DE

*The Angi rating for Locksmith Service companies in Harrington, DE 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 Harrington, DE 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 February 10, 2026

Find Locksmiths in Harrington

Avatar for Something Constructive
Something Constructive
4.9(
118
)

Serving Harrington, DE and surrounding areas

Approved

In business since 1972

Free estimates

Emergency services offered

"Mr. Patsy and his crew are great to work with easy going and extremely reliable. I know when he does a job for the City he takes pride in that job. It is great having him when we need maintenance things done."
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+25

Response time2 days
Recommended by97%of homeowners
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Avatar for SafeStreets - ADT Authorized Provider
SafeStreets - ADT Authorized Provider
4.8(
320
)

Serving Harrington, DE 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!"
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+1

6 neighbors recently requested a quote
Recommended by94%of homeowners
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A & S Locksmith LLC
5.0(
2
)

Serving Harrington, DE and surrounding areas

Approved

In business since 1990

Credit card accepted

Offers commercial services

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

Response time2 hrs
Recommended by100%of homeowners
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Avatar for ADT
ADT
4.5(
856
)

Serving Harrington, DE 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

80 neighbors recently requested a quote
Recommended by88%of homeowners
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Avatar for Mike's Home Improvement
Mike's Home Improvement
5.0(
3
)

Serving Harrington, DE and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Free estimates

Warranties offered

"Mike did a good job. I have used him for many home projects."
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+20

Response time2 days
1 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for Frontpoint
Frontpoint
4.7(
8,819
)

Serving Harrington, DE 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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Avatar for 1st Security USA
1st Security USA
4.6(
362
)

Serving Harrington, DE and surrounding areas

In business since 2002

Free estimates

Emergency services offered

"I had a security system in place that had transferred ownership to 3 companies in total. I needed service on the system and received poor customer service and outrageous pricing for a small service needed. That inspired me to look elsewhere for a new security system provider. I came across Jeremy and Larry from 1st Security LLC and all I can say, being a person in the service industry, they came through big time. Not only were they punctual and knowledgeable, they were plain old nice !!!! From the quote with Jeremy to the install with Larry, it was a pleasurable experience and one that I would recommend over and over again."
Recommended by94%of homeowners
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Locksmiths questions, answered by experts

Rekeying a lock changes the internal mechanism so that a new key works, while replacing a lock involves swapping out the entire hardware. Rekeying is a good, cost-effective option when you want to ensure old keys no longer work, such as after moving into a new home or losing a key. It's also ideal if you want to keep your existing lock hardware. You should opt to replace the locks entirely if you want to upgrade to a more secure or different style of lock, if the current lock is old or damaged, after a break-in, or if too many copies of the old key exist.

Changing door locks is a task that most homeowners can accomplish on their own. Standard door knobs are quite straightforward, and even more advanced locks, like electronic or smart locks, generally come with instructions. That said, the process can be time-consuming, especially if you plan to replace multiple locks around the house. It’s also a task that you want to complete correctly, considering that it affects the security of your house. That’s why hiring a pro is often best when changing your door locks.

The cost to hire a locksmith varies depending on the service you need. Consult your locksmith about the price of your requested services before hiring for your repair or installation. Some of the most common types of locksmith services include:

  • Installing deadbolts: $40–$75

  • Rekeying: $80–$160

  • Unlocking your house: $65–$180

  • Changing locks: $50–$200

  • Installing electronic locks: $50–$500

  • Installing smart locks: $200–$800

  • Keyless locks: $50–$300

There are several ways to add security to a sliding glass door. To start, install a rod or deadbolt lock instead of the flip-lock that comes standard with most sliding glass doors. Add a sensor to the door and monitor any activity through your home security system.

Finally, installing shatterproof window film will help keep the structural integrity of the glass if it cracks.

Expect to pay between $50 to $200 if you hire a locksmith to change your locks. That figure includes labor and the cost of basic hardware. The cost will naturally be higher if you plan to install more expensive locks, like smart locks, and if you need a lot of them.

Homeowners can save money by replacing locks themselves. A typical rekeying kit costs about $10 to $25. The only additional cost is purchasing new house keys, and those are no more than a few dollars per key. If you want to replace the locks on your own completely, the main cost is the price of the locks themselves. A standard knob-style lock starts around $25, while electronic locks and smart locks will run in the hundreds of dollars. The only additional tools you should need are a tape measure, screwdriver, and screws if they are not already provided.

The Harrington, DE 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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