Lock Replacement Services

A damaged, worn, or unreliable lock can make everyday access difficult and leave you questioning whether your property is properly secured. Since 2017, I have provided lock replacement services for homeowners and businesses throughout the southwest Chicago suburbs and nearby Northwest Indiana.

Lock Replacement for Homes & Businesses

Locks experience regular use, and over time, their condition can change. I replace residential and commercial locks when existing hardware has become damaged, difficult to operate, unreliable, or unsuitable for the way an entrance is used.

Residential Lock Replacement

Residential Lock Replacement

Your home's exterior locks need to work reliably every time you enter or secure the property. I replace residential locks when homeowners experience ongoing problems with existing hardware or want to update older locks.


If you are changing the way you access your home, I can also discuss traditional lock and keyless entry options based on the door and your needs.

Commercial Lock Replacement

Commercial Lock Replacement

Commercial locks can experience frequent use from employees, customers, tenants, and other authorized users. Worn or unreliable hardware can create unnecessary access problems during normal business operations.


I replace commercial locks for individual entrances and can also help businesses consider broader access options when multiple doors or users are involved.

When Should You Replace a Lock?

Lock replacement may be appropriate when you have:

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A damaged or broken lock

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Hardware that feels loose or worn

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A lock that regularly sticks or is difficult to operate

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Repeated problems locking or unlocking the door

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Older hardware that no longer fits your needs

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A reason to change the type of access at an entrance

If the lock itself still works properly and your main concern is who has a key, replacement may not be necessary.

Lock Replacement vs. Rekeying

Lock replacement and rekeying address different needs.

Replacement involves removing existing lock hardware and installing new hardware. It is generally the more appropriate option when the current lock is damaged, worn, unreliable, or no longer suitable for the property.

Rekeying keeps compatible existing hardware but changes the lock so previously issued keys no longer operate it. This may be useful when the lock is still in good condition but you need to change who has access.

If you are unsure which option fits your situation, tell me what is happening with your lock and what you want to change.

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Frequently Asked Questions

Yes. I provide lock replacement for both homes and businesses based on the existing hardware and access needs.

Not necessarily. The right service depends on the condition of the lock and what is causing the problem.

Possibly. If compatible hardware is in good working condition and you only need to change which keys work, rekeying may be an appropriate option.

Request Lock Replacement

When you choose Mk Locksmith Inc, you work directly with a local locksmith who has been serving customers since 2017. I take the time to understand what you need, explain your options, and recommend a solution appropriate for your property.

Having trouble with a lock at your home or business? Call Mk Locksmith Inc at (773) 447-7951 or use the contact form to request lock replacement.