At most businesses, the locks were already on the doors when the current owner got the keys. Every door has opened and closed since, and nothing has given anyone a reason to look closer. A lock can work every single day and still be the wrong lock for a business.

The clearest signs are not always age or damage. Sometimes the problem is residential hardware on a commercial door, a key that can be copied anywhere, a room that now protects something more valuable, or a building where every door seems to use a different key. Each one is easy to check yourself, and each one points to a different fix.

Why a working lock can still be wrong for a business

A front door at home opens a handful of times a day. A staff entrance or a storefront door can open several hundred times between opening and closing, often with a door closer pulling it shut behind every person. Locks are built and graded for the amount of use they are expected to take. A light-duty lock wears out fast when it is used like a commercial door lock all day.

Door hardware in the United States is graded under ANSI and BHMA standards. Grade 1 is the heaviest duty and is commonly used on high-traffic commercial doors. Grade 2 suits lighter commercial doors and better residential ones. Grade 3 is basic residential hardware. The grade is usually printed on the box and in the product listing, so it helps to know the brand and model on each of your doors. Not every door needs Grade 1. An interior office that opens a few times a day is well served by Grade 2 hardware.

The lock is also not always the part at fault. A door that has dropped on its hinges, a frame that has shifted or a closer that slams can make a good lock stick or miss the strike. It is worth ruling those out before any lock is blamed.

Signs the locks on your business were made for a house

Residential hardware ends up on commercial doors more often than most owners expect, usually because a previous tenant replaced a lock in a hurry with whatever the nearest store had on the shelf. It often ends up on the doors customers never see, and these are the signs to look for:

Keys to your business that any store will copy

Look at the key itself. A standard key can be duplicated at a hardware store or a kiosk in a couple of minutes, with no record of who asked for it. For a house with three keyholders that is manageable. For a business where keys pass through managers, staff, cleaners and contractors over several years, it means nobody can say how many working keys exist.

Rekeying resets who can get in today, and it is the right first step when the hardware is sound. It does not change the kind of key you hand out, so the same problem builds again over time. Locks on a restricted keyway use key blanks that are controlled by the locksmith or manufacturer, so copies are made only through an authorized process. That control over copies is the main reason businesses move to high-security locks.

When the job of a door has changed but the lock has not

The way a business uses its rooms changes over the years, and the locks rarely change with it. A lock that suited a door on the day it was installed can be badly matched a few years later, because the room behind it or the traffic through it is no longer the same. These are the changes worth walking the building for:

Too many keys and mismatched hardware across one building

Count the keys it takes to open your business from the front door to the back office. If a small shop needs five or six, the building has been added to one lock at a time, each from a different brand with a different keyway. That is slow every morning, and it makes any future rekey harder because the locks cannot be brought onto one key.

Mixed hardware causes another problem. When one lock fails, the part may no longer be made, and the replacement will not match the others. Bringing the main doors onto one commercial brand and keyway lets a single key, or a planned set of keys, open what each person needs. Older multi-tenant buildings are where this builds up, because each past occupant tends to leave a lock behind. Our commercial locksmith in Austin handles this kind of cleanup, and so do our crews in other Texas cities.

Worn locks and security events are separate reasons to change locks

Two other situations can also call for new locks, even though they are not the focus of this list. The first is wear. A key that needs jiggling, a bolt that will not throw fully or a lever that droops is hardware reaching the end of its life, and at that point the question is whether it is time to replace your locks or repair them.

The second is an event. A manager leaving, a missing master key, a break-in or a change of tenant are all times a business should change its locks quickly, whatever condition they are in.

New locks, a rekey or a repair, and how to tell which you need

Seeing one of these signs does not always mean buying new locks. Plenty of doors only need a rekey or a small repair, and replacing sound commercial hardware can spend money that would be better used on the one door that actually needs it. The grade and condition of the lock decide which applies:

A commercial lock also has to fit the way people leave the building. Exit doors and doors with panic bars cannot be treated like ordinary office doors. If a lock is being replaced on one of those doors, the new hardware has to secure the building without getting in the way of a safe exit.

Texas Premier Locksmith starts with a door-by-door list of what is installed, what each door protects and who needs to open it. The aim is to separate the few doors that need new hardware from the ones that only need rekeying under one plan.

Have the locks on your business checked door by door