Commercial Mailbox Lock Change in Northern Virginia & DC
National Lock & Key replaces and rekeys commercial mailbox locks across Northern Virginia and Washington D.C. Whether a key was lost, a former employee still has one, or the lock is broken or worn out, we change it so only the people you choose can get to your mail. Licensed since 2012.
✓ Licensed & insured | ✓ Upfront pricing | ✓ Since 2012
What Is a Commercial Mailbox Lock Change?
A commercial mailbox lock change replaces or rekeys the lock on your business mailbox so old keys stop working. It matters because bills, checks, and bank and government mail can be stolen when a lock is broken, worn, or too many people hold a key. Most calls come after an employee leaves, keys go missing, or the lock is tampered with. We have mailbox locks in stock from leading manufacturers, so in most cases the change is quick and the mailbox is secure again the same visit.
What Our Commercial Mailbox Lock Change Service Includes
Lock replacement and rekeying — Worn or outdated mailbox locks replaced, or rekeyed so the old keys stop working
Lost keys — A new lock or rekey when mailbox keys go missing, so nobody else can use them
Former employee access — Locks changed after someone leaves so they can no longer reach your mail
Too many key holders — Locks changed or rekeyed so only the people you choose have a key
Why Trust
National Lock & Key
✓ Trusted by local homeowners
Check our Google rating here
✓ Locally owned & operated
No call centers, no outsourcing
✓ Upfront pricing
You know the cost before we start
✓ Licensed & insured since 2012
VA DCJS #11-7496 · MD #134 · DC #400318002092
Serving Northern Virginia & DC
We serve Northern Virginia and Washington D.C. — including Aldie, Alexandria, Arlington, Ashburn, Centreville, Chantilly, Fairfax, Falls Church, Gainesville, Great Falls, Herndon, Manassas, McLean, Reston, South Riding, and Sterling.
For full list of locations, see our full service area.
What Our Customers Are Saying
Frequently Asked Questions
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Yes. We replace or rekey the mailbox lock so the lost keys no longer open it, and we cut new keys for the people you choose.
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Rekeying changes the inside of the existing lock so old keys stop working, and it works when the lock is in good shape. Replacement is the better choice when the lock is broken, worn out, or has been tampered with. We check the lock and recommend one before we start.
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It's a good idea. A former employee with a key can still reach bills, checks, and bank or government mail. Changing the lock when someone leaves is the simplest way to make sure only current staff have access.
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The price depends on the lock and whether it's rekeyed or replaced, so we confirm the cost before we start. Most changes are quick and finished in a single visit.
Business mailbox lock needs changing?
Call us to check availability. We serve Northern Virginia and DC.
Mon–Fri 8:30am–6pm · Sat 9am–2pm
Last updated: October 2026