Master Key Systems Houston

If you own a business or an apartment building, you can benefit from the security and convenience of a master key system. You might also consider a master key system for your home.

Master Key Defined

Usually associated with maintenance staff and property managers, a master key is a single key that opens multiple locks. Houston area, home, business, and rental property owners, can contact Locksmith Profy with questions about master key systems or system installation.

  • Online at locksmithprofy.com
  • By phone (0032) 773-88291
  • Email hello@locksmithprofy.com

Customers can request the services of our licensed and insured professional locksmiths by visiting our home page and clicking the "click to call" or "free quote" link.

How Master Keys Benefit Landlords

A leak develops in an upstairs apartment. The water is coming through the ceiling of the unit below. The tenant in the rental space with the leak is out. Accessing the unit with a single master key rather than trying multiple keys saves time in addressing the leak.

In a medical emergency where the renter can't open the door, a master key gives first responders immediate entry to the apartment. The same scenario applies to fires and carbon monoxide leaks. A master key system installed by Lock Smith Profy protects a landlord's tenants, building and can save rentors money in the long-run. Our technicians arrive on the job site in a truck stocked with all the tools and hardware needed for the timely completion of the job.

If a master key opens a group of doors within an apartment building, it may seem that the tenants' door keys would do the same. A renter's key will only work in the lock of the unit in which they live.

master key system houston

How Do Master Keys Work In A Master Key System

In the workplace, there can be a single master key that opens and secures every door or a master key system. In a master key system, a master key will only work in a specific set of doors. If a workplace has 30 doors, and each master key system consists of ten doors, then three master keys are needed. The master key that grants access to one group of doors will not open the other 20 doors.

Choosing to use a master key system instead of a single master key is a matter of security. The system is a means of controlling the rooms to which employees have access.

How To Set Up A Master Key System

Before contacting Locksmith Profy to design your master key system, decide who will have access to what areas. The key assignment is about security, so think carefully about to whom keys will be issued. Trusting the wrong person with a master key might result in the added expense of having all the locks in the system replaced.


The next step is to determine how the doors will be designated. Numbers, letters, or an alphanumerical system are options for identifying doors. The doors should be marked to facilitate determining which keys will work in what doors. Keep a written record of each door's designation and the ID numbers of all the keys that work in that door.

There are four types of keys within a master key system.

  1. Master key
  2. Sub-master key
  3. Grand Master Key
  4. Pass key


A passkey works with a single lock within a master key system. If each floor within a building or each structure within a complex constitutes a master key system, a sub-master key works with all the locks on one floor or in one building. A master key opens every lock on every floor or in every structure. A grandmaster key opens every lock in a complex.

If creating a master key system seems a bit overwhelming, contact Locksmith Profy. We use special software designed to create master key systems. Having Locksmith Profy design your master key system is quicker and easier than working it out yourself. Once we get your system established, we can tutor you on using it effectively.

Our Locksmith Services

Locksmith Profy offers a full range of locksmithing services. In addition to traditional key duplication, we can duplicate or reprogram transponder keys for most makes and models of automobiles. If your ignition switch goes bad, we replace it on the spot. During a lockout, Locksmith Profy gets you into your home or car without damaging the locks. Locksmith Profy provides new keys for existing locks. If you need new locks, we sell and install security hardware from well-known manufacturers. We reprogram keypads and install high-security lock systems. Locksmith Profy answers emergency calls any hour of the day on any day of the week.

we are always ready to assist you for your locksmith service

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Please call us (832) 344 5232 or get a free online locksmith estimate