Rekeying locks is one of the most practical ways to regain security without replacing your entire lock hardware. Whether you've lost keys, moved into a new home, or want to exclude former tenants, understanding the actual cost and scope of work saves you money and headaches.
What Does Rekeying Actually Involve?
Rekeying is the process of changing the internal pins inside a lock cylinder so your old keys no longer work. A locksmith removes the lock from your door, takes apart the cylinder, and replaces the springs and pins with a new configuration that matches a fresh key. The lock body and mechanism stay intact—you're just changing which key opens it.
This is fundamentally different from lock replacement, where the entire lock hardware gets swapped out. For homeowners on a budget, rekeying is nearly always the smarter choice because the existing locks are usually fine; you just need new key control.
Typical Cost Range for Residential Rekeying
Most locksmiths charge between $15 and $40 per lock for standard residential rekeying, with total jobs running $60 to $150 depending on how many locks you need done. A few important factors affect pricing:
- Lock type: Basic pin-tumbler locks (the standard deadbolt) cost less than high-security or specialty locks, which may run $40–$60 each
- Accessibility: Locks that are hard to reach or require special tools cost more
- Quantity discounts: Many locksmiths reduce the per-lock price if you rekey 5+ locks at once
- Service call fee: Some charge $30–$50 just to show up; others include it in the lock price
- Time of day: Emergency or after-hours rekeying typically adds 25–50% to the bill
A single front-door deadbolt rekey typically costs $30–$50 total. Rekeying your entire home (front, back, garage, side doors) usually runs $100–$250.
What's Actually Included in a Rekey Job
When you hire a locksmith for rekeying, here's what a professional typically provides:
- Lock disassembly and reassembly with proper tools
- New key blanks (usually 2–3 copies per lock)
- Pin configuration matching so all rekeyed locks open with the same key (if desired)
- Testing to ensure each lock operates smoothly
- Reinstallation back into your door frame
- Key control documentation in some cases (useful if managing rental properties)
What you're not paying for: structural repairs, lock replacement, door adjustments, or security system integration. If your locks are broken, corroded, or damaged, rekeying won't fix them—you'll need replacement instead.
How to Get an Accurate Quote
Before hiring, contact at least two or three local locksmiths. Provide specific details:
- How many locks you need rekeyed
- Lock types (deadbolts, knob locks, sliding glass door locks, etc.)
- Whether you want all locks keyed alike (master-key scenario) or separately
- Whether any locks are unusual or high-security
Most reputable locksmiths will quote you over the phone or provide an in-home estimate. Get it in writing before work begins—this protects you from surprise charges.
Common Mistakes to Avoid
Calling before getting multiple quotes: Prices vary widely. A locksmith 10 miles away might charge half what a local shop charges.
Ignoring lock condition: If your locks are old or damaged, rekeying might not work properly. A good locksmith will let you know if replacement is the better option.
Forgetting garage or side doors: When budgeting, don't overlook secondary entry points. Many burglaries target less-obvious doors.
Not keeping your new keys safe: Once rekeyed, your old keys are worthless to intruders but useless to you. Securely destroy old key blanks.
When Rekeying Makes Sense
Rekeying is ideal after moving into a used home (you don't know who has copies), following a break-in where keys were compromised, or when managing rental properties where tenant turnover is frequent. If you're upgrading to smart locks, keyless entry, or high-security systems, replacement is better than rekeying.
Platforms like Mercoly make it easy to compare and find trusted residential locksmiths in your area, read verified reviews, and get quotes from multiple providers without calling each one individually.
Frequently Asked Questions
Q: Will rekeying damage my existing locks? No—when done by a professional, rekeying doesn't damage your locks. The hardware remains intact and functional for years.
Q: Can I rekey locks to open with one master key? Yes, most locksmiths can configure multiple locks to share the same key, which is common for rental properties or businesses.
Q: How long does rekeying take? A single lock typically takes 15–30 minutes; rekeying an entire home usually takes 1–2 hours depending on lock access and quantity.
Ready to secure your home? Get quotes from vetted residential locksmiths in your area today.