Rekey & Lock Change in Baltimore
REKEY · LOCK CHANGE · MOBILE
Just moved in, lost a key, or had a tenant or roommate move out? We rekey your locks so old keys stop working, or put in new locks, right at your home. We work in homes all over Baltimore City and Baltimore, Howard, Harford, Anne Arundel and Carroll counties.
Maryland Locksmith License #379 · Insured & bonded · Family owned · Serving Baltimore since 2014 · Free estimates
What to Expect
1. Tell us how many locks. You get a free estimate before we start.
2. We come to your home. On a day and time that works for you.
3. We do the job. We rekey or change the locks and test every key with you.
Free Estimate
Lock Work We Do
Homes · Apartments · Rentals
Rekey
We change the inside of the lock so old keys stop working. You keep the same lock and get new keys.
Lock Change
Worn out, broken, or just want a new one? We take out the old lock and put in a new one.
After a Move
New home, or a tenant moved out? Rekey every door so you know exactly who has a key.
One Key for Every Door
Front, back, basement, storm and garage entry door each on a different key? We can key them all alike, so one key works the whole house.
Locks After a Break-In
A lock that was forced or pried gets replaced with a new one. The locks that still work are rekeyed, since a missing key may be out there.
Where We Work
Day or night, we answer calls from all over Baltimore City and Baltimore County, and from the main towns in Howard, Harford, Anne Arundel and Carroll counties. Towns we serve include Towson, Lutherville-Timonium, Catonsville, Elkridge, Pasadena and Glen Burnie. See all the areas we serve.

Quick Answers
- Rekey or replace? If the lock works well, rekeying is usually enough. If it's worn out or broken, replace it.
- Is there a warranty? Warranty available on many services — ask us about your job.
- How much does it cost? Call for a free estimate before we start.
- Do all my locks need to be the same brand to share one key? Not always, but different brands often use different key shapes. A mixed set may need one cylinder or lock swapped first. We look at the locks before we promise anything.
- Can a storm door or sliding patio door lock be rekeyed? Some can be keyed to match your house key. Many low-cost handle sets can't, so we replace those instead.
See also: Home Lockout · Deadbolt Installation · Keypad & Smart Locks · Master Key Systems · Areas we serve.
What Customers Say
★★★★★ Over 100 five-star reviews on Google
"Very professional and fast service !!!"
— Mahmudul, Google review
★★★★★
"Excellent service good prices"
— Kevin, Google review
★★★★★
"Great experience would definitely recommend!!!"
— Kenyatta, Google review
Need Your Locks Rekeyed?
We're open 24/7. Call (443) 527-1442.
AUTHORITY LOCKSMITH INC
OPEN 24 HOURS
Call (443) 527-1442
Pay by cash, all major credit cards, Apple Pay, Apple Cash, Zelle, Venmo or Cash App.