Why a suite door is not a stand-alone door
When you lease an office suite in a building with other tenants, your front door is part of a larger system. The building owner or property manager is responsible for the structure, the common areas, the fire protection and, often, the keys. The door to your suite may be keyed into a building-wide master key system, so that the landlord, a cleaning contractor and emergency personnel can reach it in certain circumstances.
That arrangement is common and has good reasons behind it. Landlords need to be able to respond to a water leak, a fire alarm or a safety problem even when the tenant is away. Cleaning crews need to enter after hours. Maintenance staff need to service ceilings and mechanical systems. Without a key system, each of those would require a call to the tenant.
The result is that a tenant who wants to change a lock cannot simply do it. A change affects the landlord's access, the building's master key plan and sometimes the insurance and fire safety posture of the property. Most commercial leases address it directly, usually by requiring the landlord's consent and sometimes by specifying who must perform the work.
This page explains the common situations and how to approach them. It does not describe any method for defeating a lock. A responsible locksmith will confirm authorization before starting, and in a shared building that means checking with the landlord or manager as well as the tenant.
Read the lease before you call anyone
The first step is to read what your lease says about locks, keys and alterations. Look for sections on alterations, access, security, keys, entry by the landlord and surrender of the premises at the end of the term. Many leases say that the tenant may not change or add locks without written consent. Some require that any lock be keyed to the building master. Some require that the tenant provide the landlord with a copy of every key. Some require that locks be restored to their original state when the tenant moves out.
If you cannot find the answer, ask the property manager. Phrase the question plainly: you want to rekey or replace the suite entry lock, you want to know what the process is and whether the building has a preferred vendor or a required procedure. Ask for the answer in writing, even if it is a brief email.
Understand that landlords often have good reasons for the rules. A tenant who changes a lock without telling anyone may create a safety problem if the fire department needs access, and may breach the lease. The outcome can be a dispute, a charge to restore the lock or, in the worst case, a default.
If the lease is silent or unclear, get permission anyway. It is simpler to have a short written approval on file than to explain later why a lock changed. Keep that approval with your lease documents, and share it with the technician who does the work.
- Alterations or improvements clause
- Landlord access and entry clause
- Keys, security and locks clause
- Surrender and restoration clause at lease end
Master key systems and what they mean for you
A master key system lets one key open many locks while each lock also has its own key. In an office building, the landlord may have a master key that opens every suite, and each tenant has a key that opens only their own suite. The system is built into the cylinders, which are pinned in a pattern that allows both keys to work.
If you rekey a suite door without regard to the master system, the landlord's master key may no longer work. That can be a violation of the lease, and it can create a safety problem. On the other hand, if you ask the locksmith to rekey in a way that keeps the master key working, the tenant's key will change but the landlord's access will remain.
Some buildings use restricted keyways, which means that blank keys are not freely available and duplicates require authorization from the building or the manufacturer. This helps control who can copy keys. It also means that a locksmith may need the property manager's authorization to cut or program a key. See restricted keyways and key control for how those work.
If your suite is not part of a master system, the landlord may still keep a key. Ask. Do not assume the landlord has no access just because the lock looks ordinary. For a fuller look at how these systems are organized, read master key systems for businesses.
Fire safety and exit rules
Commercial doors fall under fire and life-safety rules that residential doors do not. A suite entry door that opens onto a corridor may be part of a means of egress, which is the path people use to leave the building in an emergency. Rules generally require that people be able to leave without a key, insider knowledge or excessive effort. That is why many commercial doors have lever handles, panic hardware or a latch that always releases from the inside.
Adding a deadbolt that requires a key to open from the inside, or adding a chain or a bar that cannot be released quickly, may violate those rules. A responsible locksmith will not install hardware that compromises exit. If you want a higher level of security, a technician can discuss options that satisfy safety requirements, such as a lever handle with a latch that always releases from the inside and a deadbolt with a thumb turn.
The local fire authority and the building's own rules set the details, and a property manager will know them. A locksmith familiar with commercial work will also be aware of the general principles. Do not try to modify a fire-rated door or its hardware without guidance, since doing so can affect the rating of the door.
Our page on panic bars and exit device service explains how exit hardware works and why it must keep working. If your suite has a panic bar or a fire-rated door, tell the dispatcher when you call.
Who may authorize the work
In a shared building, several people may have a say. The tenant who leases the suite can usually authorize routine requests such as a lockout. A change to the lock or the key system usually needs the landlord or the property manager. If the tenant is a company, the person who calls must be authorized to act for it, such as an owner, an officer or a designated manager.
A locksmith will ask who is requesting the work and what authority they have. For a tenant, that means identification and something that links the person to the business and the suite, such as a lease, a business registration or a letter from the owner. For the landlord, it means proof of ownership or a management agreement. Where the lock is part of a master system, the technician may want the landlord's confirmation before touching it.
If you are an employee who has been asked to arrange a lock change, bring a note from your employer and, if possible, contact details for the person who can confirm. If you are a property manager arranging work on behalf of a tenant, bring the lease or a written request from the tenant.
Our page on locksmith authorization for businesses explains the typical roles. A few minutes spent confirming authorization saves trouble.
Common reasons to change an office suite lock
Businesses change locks for ordinary reasons. An employee has left and still has a key. A key has been lost. The company has moved into the suite and wants to be sure previous tenants no longer have access. A cleaning or maintenance contractor has changed. The company has had a break-in or an attempt. A manager wants a different key arrangement, such as a restricted keyway that prevents unauthorized copying.
Each reason leads to a slightly different approach. If an employee has left, rekeying the suite and collecting keys is standard. If keys are lost, rekeying is the safer choice, since you cannot know who found them. If you have moved in, a rekey as part of onboarding is sensible. If there was a break-in, security needs may be broader, including a review of door hardware, the frame and the alarm.
Our pages on rekeying after an employee leaves and security after a business break-in describe those situations. In each, remember that the landlord needs to be informed if the work affects the master system.
Plan the change for a time that does not disrupt the business. After-hours work may require coordination with building security, and the technician may need to be announced to the front desk or the property manager.
Coordinating with building management
A smooth lock change in a shared building starts with a short email or call to the property manager. Tell them what you want to do, why and when. Ask whether they need to be present, whether a certificate of insurance is required from the contractor, whether the building has a preferred vendor and whether there are rules about after-hours access.
Many buildings require outside contractors to provide proof of insurance and to check in at a front desk. Some require advance notice. Some limit work to certain hours. Ask about each, and pass the answers to the locksmith company when you call. If the property manager prefers to arrange the work themselves, they may have an approved vendor, and that is a reasonable arrangement.
If the building uses an access control system, such as card readers or fobs on the suite door, the lock change may involve the building's system integrator, not just a locksmith. See keypad and access control basics for how those systems work.
After the work, make sure the landlord has what they need, such as a key or confirmation that the master system still works. Keep a record of the date, the technician, what was done and who approved it.
Alarms, cameras and suites that share systems
Many office suites have more than a lock. They have an intrusion alarm, a camera, a door contact that reports when the door opens or an access control reader tied to the building. A lock change can affect each of these. A new lock may not line up with an existing door contact. A new strike plate can shift the alignment of a magnetic sensor. A reader that controls an electric strike depends on the strike staying compatible with the new hardware.
Before work begins, ask who maintains the alarm and any building-level systems. If the alarm company or the building's security vendor needs to be involved, schedule them together with the locksmith. Otherwise a technician may finish the lock change and leave you with a door that no longer reports to the alarm panel, which is a security gap and a source of false alarms.
Shared systems also create privacy and responsibility questions. If the building's access control logs who enters, the property manager may hold those records. If a camera covers the corridor outside your door, a lock change does not affect it, but the manager may need to know when contractors will be working near it. A short note to the building office avoids misunderstandings.
When you plan the lock change, list the devices on the suite door: lock, closer, exit device, door contact, reader, strike and any signage. Share the list with the technician when you call. It helps the dispatcher decide whether a standard visit is enough or whether an on-site assessment is needed first.
Lockouts in a shared building
A lockout in an office is a different problem from a lock change, and the rules are often simpler. If you are locked out of your suite after hours, check whether the property manager, building security or a coworker has a key. Many buildings have after-hours procedures. Do not force the door, since damage can affect the landlord and the building and may create a liability.
If you call a locksmith, expect questions about who you are, what business you represent and whether you are authorized. A lease, a business card with a company name or a letter from the owner helps. If the suite is part of a master system, the landlord's key may be the quickest fix.
If the lockout involves an alarmed suite, be aware that opening the door may trigger the alarm and prompt a response. Know your alarm passcode and the monitoring company's contact details, or have someone on hand who does. See office lockout for more on how these calls work.
Quotes are given only by phone, and a service call charge applies to dispatch. For complicated commercial work, such as several doors, a master system or an access control panel, an on-site visit is needed first.
Moving out and leaving the lock as you found it
At the end of a lease, the landlord usually expects the suite to be returned in its original condition, including the locks. If you changed a lock with permission, you may need to restore it, hand over all keys or provide the new key to the landlord. Read the surrender clause in your lease and ask the property manager what they expect.
Collect keys from employees, contractors and anyone who has had access. Keep a log. Return every key to the landlord as required, and take care not to retain copies. If you cannot account for all keys, tell the landlord, since they may rekey at your expense under the lease.
If you are the incoming tenant, ask for the locks to be rekeyed before you move in. It is a normal request and an easy way to be sure no previous tenant has access. Our page on lease ending and lock changes describes the typical steps.
When you are ready, call and describe the building, the door, any master system or access control and what you want to achieve. A technician can talk through the options and explain what permission is needed.
Questions people ask
Can I change the lock on my office suite without telling the landlord?
Usually not. Most commercial leases require written consent for lock changes, and the landlord often holds a master key or needs access for emergencies. Changing a lock without approval can breach the lease and create a safety problem. Ask the property manager, get approval in writing and share it with the locksmith.
What is a master key system and why does it matter?
It is a keying arrangement in which each suite has its own key and the landlord has a master key that opens all suites. If you rekey your suite without regard to the system, the master key may stop working. A locksmith can rekey in a way that preserves the master, with the landlord's authorization.
Can I add a deadbolt that needs a key from the inside?
Often not. Suite doors that open onto corridors may be part of an exit path, and rules generally require that people can leave without a key. A locksmith can discuss hardware that adds security while keeping the exit path clear, such as a deadbolt with a thumb turn. The property manager can confirm local requirements.
Who can authorize a lock change for a company?
An owner, officer or designated manager of the tenant company, along with the landlord or property manager where the lease requires it. The technician will ask for identification and something linking the caller to the business and suite, such as a lease or a letter from the owner. Employees should bring a note from the employer.
What should I do about keys when an employee leaves?
Collect their keys and consider rekeying, especially if you cannot be sure all copies are accounted for. Keep a log of who holds which key. If the suite is on a master system, tell the landlord before the change. Rekeying is often quicker than trying to track every copy.
How are charges handled for commercial lock work?
Quotes are given only by phone. A dispatcher explains how charges work, including the service call charge, before anyone is sent. Straightforward jobs may be discussed by phone, while master systems, several doors, access control or fire-rated hardware need an on-site visit before a firm number is possible.
Describe the situation by phone and we will tell you what the job involves. Quotes are given by phone. Jobs that cannot be quoted without seeing them need a technician on site, and the service call charge is explained on the phone before anyone is dispatched.