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When it comes to your home’s security, few decisions are more important than whether to re keying your existing locks or go for a full lock replacement. Both options enhance security, but they serve different purposes and come with unique benefits. Whether you’ve just moved into a new home, experienced a break-in, or lost your keys, knowing the right choice can save you time, money, and stress.
In this guide, we’ll break down everything you need to know to prepare for a locksmith, understand the key differences between re keying and replacing locks, and determine which option is best for your situation.
🔑 What Is Re Keying?
Re keying involves changing the internal pins of your existing lock so it works with a new key. This is a popular choice for homeowners who want to update access without changing the entire lock hardware.
Key Features of Re Keying:
- Cost-effective
- Quick service (usually within 30 minutes per lock)
- Maintains existing hardware appearance
- Only the keys are different
This method is ideal when you’ve lost keys, want to revoke access from previous tenants, or unify multiple locks to a single key.
🔐 What Is Full Lock Replacement?
Full lock replacement means removing the old lock entirely and installing a new one. It’s typically chosen when the current locks are outdated, damaged, or compromised.
When It’s Used:
- After a break-in
- When upgrading to smart locks or deadbolts
- For damaged or worn-out locks
Unlike re keying, this option offers a hardware refresh, which can also improve the aesthetic of your door and boost overall security.
🔄 Re Keying vs. Full Lock Replacement: Key Differences
| Feature | Re Keying | Full Replacement |
|---|---|---|
| Cost | Lower | Higher |
| Time Required | Faster | Slightly longer |
| Security Level | Moderate | High (if upgraded) |
| Appearance Change | None | New hardware look |
| Key Control | Yes | Yes |
| Suitable For | Lost keys, tenant changes | Damaged locks, upgrades |
🕰️ When Should You Re Key Your Locks?
Re keying is a smart move in several scenarios:
- After moving into a new home: You never know who else might have a copy of the key.
- Lost or stolen keys: Ensure that whoever finds them can’t get in.
- Divorce or roommate changes: Keep former occupants out.
- Wanting one key for all locks: Simplify access without replacing all locks.
🛠️ When Is Full Lock Replacement Necessary?
Sometimes, re keying just won’t cut it. Consider full replacement when:
- Locks are old or malfunctioning
- You want to upgrade to smart or high-security locks
- Visible damage or signs of forced entry
- Your current locks are easily picked or bypassed
Pro tip: Upgrade to ANSI Grade 1 or 2 locks for top-tier security.
💲 Cost Comparison: Re Keying vs. Replacement
| Service | Average Cost (Per Lock) |
|---|---|
| Re Keying | $15–$50 |
| Full Replacement | $70–$200 (plus cost of hardware) |
Factors That Affect Price:
- Lock type (deadbolt vs. knob)
- Number of locks
- Locksmith’s hourly rate
- Location and time (after-hours may cost more)
Need a deeper breakdown? Check out HomeAdvisor’s locksmith cost guide.
🧠 How to Choose the Right Locksmith
Not all locksmiths are created equal. Here’s what to look for:
- Licensed and insured
- Experience and certifications (e.g., ALOA Certified)
- Clear pricing and estimates
- Good reviews and ratings
- Emergency services availability
Tip: Always ask for ID and credentials when the locksmith arrives.
✅ How to Prepare Before the Locksmith Arrives
Save time and ensure a smooth service by preparing ahead.
Checklist:
- Clear access to all locks (indoor/outdoor)
- Make a list of all locks needing service
- Have your ID and proof of ownership ready
- Secure pets or children during the visit
- Discuss key preferences (number of copies, type)
🧰 What to Expect During a Re Keying Service
The process is usually simple:
- The locksmith removes the lock cylinder
- They replace the pins inside to match a new key
- New keys are cut and tested
- Locks are reinstalled and tested
It’s fast, clean, and often completed in less than an hour.
🛡️ What to Expect During a Lock Replacement
- Old lock is removed
- Door is measured for compatibility
- New lock hardware is installed
- Keys are tested
- Locksmith may offer instructions (especially for digital locks)
Some upgrades, like electronic keypads, may take longer to install and configure.
✔️ Pros and Cons of Re Keying
Pros:
- Budget-friendly
- Quick and easy
- Retains hardware design
Cons:
- Doesn’t upgrade hardware
- Still vulnerable if lock design is outdated
🔒 Pros and Cons of Lock Replacement
Pros:
- Higher security
- Can upgrade style and tech
- Replaces worn-out parts
Cons:
- Higher cost
- Takes more time
🏘️ Security Considerations
- Re keying is secure, but only as strong as the existing lock.
- Replacement is better for long-term security upgrades.
- Smart locks can be a good investment for tech-savvy users.
Ensure all exterior doors, garage entries, and basement access points are covered.
❓ FAQs
1. Can I re key the locks myself?
You can with a re keying kit, but it’s easy to make mistakes. Hiring a locksmith ensures it’s done correctly and securely.
2. How long does re keying take?
Typically 15–30 minutes per lock, depending on the type.
3. Will re keying affect my door or hardware?
No, the hardware remains the same—only the key changes.
4. Should I replace all locks after a break-in?
Yes, especially if locks are damaged or compromised. Consider upgrading to high-security models.
5. How often should I re key my locks?
Every few years or after any major change (move, theft, tenant change, etc.).
6. Can I have all my locks work with one key?
Yes, a locksmith can re key multiple locks to work with a master key system.
🧾 Conclusion
Choosing between re keying and full lock replacement depends on your budget, security needs, and the current condition of your locks. Re keying is cost-effective and ideal for quick security resets, while replacement is the best choice when upgrading or fixing damaged locks.
Either way, preparation is key. Know what you need, choose the right locksmith, and get ready to enjoy greater peace of mind.
