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Best locksmiths near Greenville, ME

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Top-Rated Locksmiths in Greenville - Updated Nov 2026

Avatar for AIO Integrations LLC
AIO Integrations LLC
4.6(
18
)
Security Safe - Install

Serving Greenville, ME and surrounding areas

In business since 2020

Emergency services offered

Credit card accepted

"There were many things wrong in my computer (my fault and letting grandchildren on computer) Robert was so helpful, gave me many good instructions to keep everything safe, which I have written down, feel like I have a new computer. He was so excellent and experienced, took his time and was meticulous about what needed to be done. He was a pleasure to work with and I will use this company again! Linda Disy"
Helping a Victim who was being Cyber-stocked
WIndows Update Broken
Computer Tune-up
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Recommended by91%of homeowners
Avatar for SkyCover
SkyCover
5.0(
5
)
Security Safe - Install

Serving Greenville, ME and surrounding areas

In business since 1998

Free estimates

Emergency services offered

SkyCover provides a total home security and automation solution that is 100% wireless with 100% cellular monitoring and no long-term contract. SkyCover monitoring includes interactive services for remote system control and access. Trust SkyCover to deliver with risk-free 30-day trial, free shipping and no long-term contract monitoring.

Additional Photos
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Recommended by100%of homeowners
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Locksmiths FAQs, 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.

Keyless locks are great for convenience, letting you unlock doors with a code or your phone so you don't need to carry keys around. They also often come with helpful features like temporary codes for guests. On the downside, they can be more costly up front and do require batteries that will eventually need replacing. If you value ease of use and additional security features, keyless locks are worth the investment.

It could be difficult to get in and out of a lock for several reasons, such as the keyhole needing additional lubrication. Particles, debris, and dirt can also get into a lock, making a key stuck (the lubrication can help with the removal). 

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.

Most jobs take 30 minutes to 2 hours, but high-security systems or multiple lock installations may require additional time.

The Greenville, ME homeowners’ guide to locksmith services

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