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Top-Rated Locksmiths in Greenville - Updated Nov 2026

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

Serving Greenville, NH 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

4 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Extreme Makeover Custom Home Repair Handyman, LLC
Extreme Makeover Custom Home Repair Handyman, LLC
4.6(
160
)
Hardware, Latches & Tracks (Door) - Repair or Replace

Serving Greenville, NH and surrounding areas

Approved

In business since 1996

Free estimates

Emergency services offered

"This is the second time we used John. Since he was so good on our first project, it was an easy choice to call him again. This project was to replace rotted wood posts and railings on our front porch. As usual, John’s work was excellent. His attention to detail clearly separated him from many other contractors. John is easy to work with, does what he says he will do, communicated well, consults with you on any decisions and handles unexpected issues with ease. We will use John again for sure."
Additional Photos
Sun room
decking and siding
library
Response time1 day
2 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for ADT
ADT
4.5(
889
)
Security Safe - Install

Serving Greenville, NH 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

36 neighbors recently requested a quote
Recommended by88%of homeowners
DT Garage Door Service
New to Angi
Hardware, Latches & Tracks (Door) - Repair or Replace

Serving Greenville, NH and surrounding areas

Approved

In business since 1999

Free estimates

Emergency services offered

Alpine Home Improvement is a customer service that happens to be in the construction and home improvement industry. Specializing in home remodeling and home improvement projects as well as garage door installations, servicing, and repairs, Alpine is committed to excellence in every aspect of our business. Satisfaction is our aim! We uphold a standard of integrity bound by fairness, honesty and responsibility in all of our jobs. We are a locally owned and operated business with more than 21 years of experience serving New England from the surrounding areas between New Hampshire’s Lakes Region to Central Massachusetts. A plan of action for all jobs and projects can and will be considered. Call or email today and let us put our experience to work for you!

Response time1 day
Response rate100%
Avatar for IronCAD
IronCAD
New to Angi
LocksmithHardware, Latches & Tracks (Door) - Repair or Replace

Serving Greenville, NH and surrounding areas

Approved

Free estimates

Small jobs welcome

Credit card accepted

IronCAD LLC (Residential Plans & Carpentry Services)\nEdgar Almonte \nBased in Lower-NH\n\nBeen working in the Building, Fabrication and Design Planning Field for 20yrs.\nWork-Travel Radius included NH & MA, and Lower-ME.\nExpertise in a wide-variety of disciplines and trades.\nSole-proprietor for Small to Mid-Size Jobs in which Bids will be reasonable. \nInsured Contractor \n

16 neighbors recently requested a quote
Sonart Construction Corp.
2.3(
7
)
Hardware, Latches & Tracks (Door) - Repair or Replace

Serving Greenville, NH and surrounding areas

Approved

In business since 2013

Free estimates

Credit card accepted

Sonart Construction Corp. has over15 years of experience in providing a variety of exterior and interior renovation services. We provide services to Palm Beach, Broward and Miami-Dade Counties.. We specialize in Bathroom Remodeling, Kitchen Remodeling, Flooring and the list goes on. Customer satisfaction is what determines our success, which is why we take a hands-on approach and keep the customer informed through every phase of the project. When interacting with our company, you'll notice that we're particularly focused on the principles of quality workmanship, timely completion, competitive pricing, and integrity in all our business dealings. We combine knowledge and research with our extensive practical experience to ensure a specialized approach for your renovation needs. Give us a call today!

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Locksmiths FAQs, answered by experts

Whether or not keyless door locks are safe and trustworthy depends on the visibility of the programming code—and a trespasser’s determination. Even if you carefully guard entry and programming codes, those trying to break in may be able to crack open the lock’s faceplate with a screwdriver and change the codes. The same goes for manual models.

Some find smart locks the safest option because it’s harder to manipulate codes without access to your phone. But it’s possible to get hacked even then. Consider installing an extended security system, like door and window alarms or surveillance cameras, to enhance security. 

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

First thing first: Make sure you’re using the right key. If it’s the correct key for your lock, there are a few reasons why it may not be working, like the key is worn out or the lock is jammed. Try lubricating the lock and pushing the door closed to ensure the mechanisms work correctly. If you’re still locked out, call in for help.

Yes, you should always change your locks after buying a house. Do so as soon as possible after you move in. Otherwise, you won’t know who has working keys to the property, whether they’re spare keys or otherwise. If an intruder gains access to your house with a key, it may not be covered under your homeowners insurance.

In general, keyless door locks are considered safe, and their security depends on the type and quality of the lock. They cannot be picked like a traditional lock and often include added features like biometric access, PIN codes, and smartphone connectivity, which can make them more secure. However, they are not without risks. Potential vulnerabilities include hacking for Wi-Fi-connected models, battery failure, power outages, and technical malfunctions. To maximize security, it is important to choose a reliable brand, stay on top of software updates, and perform regular maintenance. While the risks are different, keyless locks are not considered more dangerous than traditional locks.

The Greenville, NH homeowners’ guide to locksmith services

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