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TRUSTED BY MOUNT SINAI, NY HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon90
    Verified locksmith services reviews

Top-Rated Locksmiths in Mount Sinai - Updated Nov 2026

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

Serving Mount Sinai, NY 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 STANDGUARD SECURITY INC
STANDGUARD SECURITY INC
4.8(
75
)
Security Safe - Install

Serving Mount Sinai, NY and surrounding areas

Approved

In business since 1982

Free estimates

Customers say: Super punctual

Standguard Security is a highly regarded family owned and operated alarm company that has been in the security business for over 30 years. We customize your home security system or commercial security system tailored to fit your needs. We use state of the art hardwired and wireless alarm systems. Protect your home/business with a security system that includes the service of a Electronic Central Station Monitoring Company. Standguard provides dependable, prompt and professional service that you can relay on. Save money on your homeowners insurance while protecting your loved ones and home or business. HENRY R. HAUER, PRESIDENT\n\n*WE DO NOT INSTALL RING CAMERAS OR OTHER WIFI BASED CONSUMER GRADE CAMERAS*

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+4

Response time9 hrs
Response rate100%
Recommended by96%of homeowners
Avatar for ADT
ADT
4.5(
889
)
Security Safe - Install

Serving Mount Sinai, NY and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1874

Free estimates

Emergency services offered

"ADT is the best company 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
Avatar for New Edge Carpentry
New Edge Carpentry
5.0(
11
)
Hardware, Latches & Tracks (Door) - Repair or Replace

Serving Mount Sinai, NY and surrounding areas

Approved

In business since 2009

Customers say: Quick response

At New Edge Carpentry, we pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all the work we perform. We are experts, and will always keep you educated about the work process. We look forward to earning your business!

Bifold doors/flooring and trim
window/floor trim and laminate flooring
trim installation
floor and window trim installation
sliding door installation

+1

Response time4 hrs
Recommended by100%of homeowners
Avatar for BuildingLI.com - BLI Facilities LLC
BuildingLI.com - BLI Facilities LLC
5.0(
32
)
Hardware, Latches & Tracks (Door) - Repair or Replace

Serving Mount Sinai, NY and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

BuildingLI.com specializes in commercial construction, site intel, site assessment, direct hands-on work, and coordinated subcontracted licensed MEP technical assistance to owners, property managers, and facility services companies. We specialize in occupied-space renovations in commercial, medical and mixed-use active environments.

before demo
kitchen demolition
demolition complete
kitchen tile job in progress
kitchen tile

+172

Response time7 hrs
Recommended by76%of homeowners
Chris Perry
4.2(
6
)
Hardware, Latches & Tracks (Door) - Repair or Replace

Serving Mount Sinai, NY and surrounding areas

Approved

In business since 2017

Free estimates

Customers say: Terrific value

When it comes to custom carpentry work on Long Island, there is no name more trusted than Chris Perry. The company is renowned throughout the region for their high quality work, competitive pricing, and deep commitment to customer service. Their specialties include cabinet and interior trim installation, as well as custom furniture work. Perry deals with each client personally, and has experience working on both residential and light commercial projects.

Response time2 days
Recommended by83%of homeowners
Emanual Constuction
5.0(
2
)
Hardware, Latches & Tracks (Door) - Repair or Replace

Serving Mount Sinai, NY and surrounding areas

Approved

In business since 2005

Free estimates

Customers say: Quality work

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumers' needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. To understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

Emanu construction llc
Emanu construction llc
Emanu construction llc
Emanu construction llc
Emanu construction llc

+11

Response time30 mins
Recommended by100%of homeowners
LJD Home Improvements
New to Angi
Hardware, Latches & Tracks (Door) - Repair or Replace

Serving Mount Sinai, NY and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We specialize in interior painting and provide unmatched customer service! You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction! We take care of our Veterans, Seniors, and the Disabled. \n

16 neighbors recently requested a quote
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Locksmiths FAQs, answered by experts

The good news is that, yes, you can change locks yourself. Many people find it’s an easy DIY project that requires few tools and not much expense (depending on which lock you’re installing). If you have trouble with any part of an installation, you can always call a locksmith to help finish installing them.

Lock picking is a relatively subtle method of unauthorized access, making it hard to detect. But there are telltale signs to look for. First, look for scratches or tool marks around the keyhole or the lock's surface. Also, check for loose or misaligned components, like a wonky strike plate, which could indicate tampering. Consulting a locksmith or security professional for an assessment can provide valuable insights, too. Investing in high-quality locks and considering additional security measures, like security cameras, can help deter potential intruders and enhance your overall safety.

Yes, as long as it’s thick enough for the deadbolt. Most interior hollow core doors are at least 1 1/2-inches thick, which is usually the minimum requirement for a deadbolt. You’ll want to find the lock block first before installing. Also, most hollow doors require additional reinforcement for locks, such as a reinforcement plate or plywood block.

If part of the key is protruding out of the lock, you can use a pair of needle-nosed pliers or tweezers to gently turn the key in the lock to open the door. If the key is fully inserted into the lock, you may also be able to use a key extractor to help turn the key into the unlocked position. 

But if the key breaks off halfway into the lock or you simply can’t reach it to help engage the unlocking mechanisms, you should probably call a professional.

Yes, with better technology now available, it’s possible to add a smart lock on your sliding glass door. Smart locks can be easy for almost everyone in the family to operate and can connect to other safety features in the home, like smart lights. Plus, they’re harder for would-be criminals to pick. However, keep in mind that smart locks can potentially be hacked, and some completely rely on phones or Wi-Fi, which can be an issue if the power goes out.

The Mount Sinai, NY homeowners’ guide to locksmith services

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