About Us

Family-Owned and Operated. Licensed, Bonded and Insured.

Keystone Lock & Safe is a family—owned and operated business, located in the Deer Park neighborhood for more than 10 years. Our mission then, and now, is to provide you with prompt, professional and courteous service at any time of day or night.

Our technicians are knowledgeable, trained, and trustworthy employees of Keystone Lock & Safe. We do not use sub-contractors. That means the buck stops with us.

We’ll take the time to listen to your needs and your budget. We strive to help you understand all your options and guide you in making the best decision for the security of your home or business.

We are a full-service lock, safe and security company servicing all of Nassau and Suffolk County. We are good standing members of industry organizations including ALOA (Associated Locksmiths of America), SAVTA (Safe and Vault Technicians Association) and NSO (National Safeman’s Organization). We are licensed in the state of NY to “sell, service, maintain and install” all types of access control systems, camera systems, alarm systems and low voltage wiring.

At Keystone Lock & Safe, we recognize you are the reason we are in business and depend upon your recommendations to continue to grow our business.

You can stay in touch with us on social media and get our latest updates and industry news

For 24-hour Service, call 631-242-4908