Lock Rekey vs Replace: Your Highlands Ranch Guide

Lock Rekey vs. Replace: Complete Guide for Highlands Ranch Homeowners

When your locks no longer work or you've lost keys, should you rekey or replace? Colorado Dependable Locksmith explains the differences, costs, and benefits of each approach to help Highlands Ranch homeowners and businesses make the best security decision.

What Is Rekeying?

Rekeying changes the internal lock mechanism so old keys no longer work. The external hardware stays the same—the lock looks identical, but the internal pins are rearranged to match a new key. It's like reprogramming the lock without replacing it.

What Is Lock Replacement?

Lock replacement removes your entire lock and installs new hardware. The new lock may be different from the old one (different brand, style, or security level). You get completely new lock mechanisms.

Rekey vs. Replace Cost Comparison

Rekeying cost: $20-$40 per lock

Replacement cost: $85-$200 per lock installed

For a typical home with 5 exterior locks, rekeying costs $150-$200, while replacement costs $500+. Rekeying is 70-80% cheaper.

When to Rekey

• Lost keys — old keys are lost but you're confident no one can access them
• Tenant turnover — rental property, need new keys for incoming tenant
• Key security concern — you suspect someone copied your key
• Budget constraints — you want security upgrades but need to minimize cost
• Existing locks are fine — hardware still works, only the key needs changing

When to Replace Locks

• Lock is broken or jammed — won't open, key won't turn, or physically damaged
• Security upgrade needed — current locks don't meet security standards (e.g., old spring latches)
• Different lock aesthetic — you want a new style that doesn't match the old hardware
• After break-in — lock was damaged during forced entry
• Master key system implementation — current locks can't be integrated into a master system
• Smart lock or electronic access — upgrading to modern technology

Rekeying Limitations

• You keep the same lock hardware (can't change style)
• If locks are damaged or broken, rekeying won't fix them
• Very old locks may not be rekeyed properly
• Can't add features like deadbolts or electronic locks through rekeying alone

Replacement Advantages

• Get new, high-quality hardware with modern features
• Upgrade to higher security locks (Grade 1 vs. standard)
• Install smart locks or electronic access if desired
• Choose locks that match your home aesthetic
• Broken locks are fixed, not patched

Expert Recommendation

For lost keys: Rekey unless the locks are broken or insecure.

For tenant turnover: Rekey to save money and maintain consistency.

For security upgrades: Replace to get newer, Grade 1 locks.

For broken locks: Replace only; rekeying won't fix broken hardware.

For master key systems: Usually requires rekeying existing locks first, then integrating into the system.

Rekeying + Replacement Strategy

Many Highlands Ranch property managers use a hybrid approach: rekey critical locks for immediate security, then gradually replace older locks with newer Grade 1 hardware as budget allows. This maximizes security while minimizing cost.

Get a Professional Assessment

The best approach depends on your specific situation. Call Colorado Dependable Locksmith at (720) 299-9964 for a free assessment. We'll evaluate your locks and recommend whether rekeying, replacement, or a combination makes sense for your property.

Serving Highlands Ranch with expert lock services since 2011. Licensed, bonded, insured. Women-owned.