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Certified, insured, and professional experts.
Reliable locksmiths with proven experience.
Professional locksmiths will come to you.
Locksmith On Demand provides professional lock rekeying and lock replacement services in Newmarket, giving homeowners, renters, and businesses flexible options to improve security. Rekeying ensures old keys no longer work by changing the lock’s internal pins, while full lock replacement is ideal for upgraded protection or aesthetics. Whether you’ve just moved in, lost your keys, or want to enhance your property’s security, our mobile locksmiths deliver fast, clean, and reliable service tailored to your needs.
Here’s why homeowners in Newmarket call us:
In addition to rekeying and replacement, we also provide:

Need extras for family, tenants, or employees? We cut and test them on the spot.

Got a key stuck or snapped inside the lock? We remove it cleanly and fix the lock.

We can install new knobs, deadbolts, levers, handlesets, and more.

Interested in keyless entry? We install and configure smart lock systems.

Ideal for landlords or businesses—control multiple doors with one master.

Boost security with pick-resistant and bump-proof locks.
Need a new key or a full hardware upgrade? Locksmith On Demand in Newmarket rekeys and replaces locks quickly to restore your peace of mind.
How It Works – 3 Steps to Service
Step 1: Call or Request Service
Let us know what you need—lock rekeying, upgrades, or a full replacement.
Step 2: On-Site Assessment & Recommendation
We inspect your existing locks and help you decide on the most secure and cost-effective option.
Step 3: Complete Rekey or Replacement
We perform the service right on-site—new keys included. No mess, no damage.
📞 (647) 477-4108 — Call Now For Fast Rekeying or New Locks!
Most common for home exterior doors.
Interior or low-security doors.
Keypad, fingerprint, or app-controlled systems.
Commercial-grade locks with integrated cylinders.
Ideal for gates, storage units, and garages.
Restricted keyways, pick-resistant, bump-proof systems.
As a leading locksmith company in Newmarket & throughout the GTA, we look to satisfy our clients with our work.
Posted on Cole Braithwaite Great job and fast servicePosted on Daniel Liao Super nice and very professionalPosted on Daniel Professional. Courteous. Responsive.Posted on Shannon Lupo Very happy with the professional service received. Locksmith arrived, and solved our problem quickly. They were great to work with.Posted on A. Bako I was impressed with the service, expertise and knowledge provided by Rom in fixing the lock to my entrance door. It took only less than 30 minutes to complete the job and fix the problem, surprisingly especially during Christmas eve. I am thankful & blessed to bless Locksmith On Demand during this Christmas Eve day. They are experts in what they do and deliver their promise. Merry Christmas and much success!Posted on Gillian Hanlon Eli was very professional, knowledgeable, quick to problem solve, and personable. Highly recommendPosted on Theodore Briggs Fast, efficient, friendly service. Would highly recommend. We needed new locks and they were available immediatelyPosted on hannah whiteside Excellent service! Came very quickly and was able to replace our locks promptly
Answers to Common Questions About Lock Rekeying and Replacement in Newmarket
Rekeying means changing the internal “pins” so old keys no longer open it. Replacement means you get a new lock set altogether. If your existing lock is still solid and just security is your concern, rekeying often makes sense. If the lock’s worn, damaged, or incompatible, replacement may be better.
Costs depend on your lock type, number of doors, whether parts need replacing, and how complicated the job is. I always give you an itemized quote upfront — call-out, labor, parts — so there’s no “that'll be extra” surprise.
Yes — rekeying will prevent old keys from working (even if someone still has them). It’s a cost-effective way to lock out unknown keys. If the lock is old or weak, we might also recommend replacement.
Absolutely. I can rekey your existing locks or replace with a keyed-alike set so you only carry one key.
Replacement is better if the lock is damaged, obsolete, has major wear, or is not compatible with modern security. Also, if you want upgraded features (smart lock, higher security cylinder), replacement is needed. If you like, I can inspect your current lock and tell you if rekeying is enough or replacement is recommended.
Whether you want to boost security, change access, or replace outdated locks, Locksmith On Demand has you covered. Fast, professional service at your doorstep.