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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(
890
)
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

35 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

Warranties offered

Small jobs welcome

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

Any type of dead bolt lock provides the highest level of safety for a single device. However, it’s also important to determine a lock's grade. Locks can come in either Grade 1, Grade 2, or Grade 3, which indicates how durable it is and if it’s constructed solidly. Safety experts recommend choosing locks based on Grade 1, which offers the highest level of durability.

Newer, electric-powered door locks generally have a life span of five years or less. That’s thanks, in large part, to a phenomenon called planned obsolescence, in which products are programmed to need replacing after a certain amount of time. That’s also why older, manual, push-key locksets can last up to 30 years with regular cleanings and maintenance. When it does come time for a new set-up, know that the cost to change locks ranges from $130 to $500 on average.

The easiest way to pick a lock is by using a titanium rake pick. This type of lock pick comes in a variety of shapes used to simulate different key configurations but generally has a tip with a bent design. Rake picks are the most beginner-friendly lockpicks and the simplest to learn how to use.

Lubricating a door lock is an important part of door lock maintenance. It involves taking the lubricant of your choice (it’s best to use whatever the lock’s manufacturer suggests) and spraying it directly into the keyway. Push and pull your key in and out of the lock to make sure it’s all the way in. 

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 Greenville, NH homeowners’ guide to locksmith services

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