Commercial Lock Replacement vs. Rekeying: A Practical Decision Guide

What each option changes

Rekeying keeps compatible hardware in place while changing the combination. It can address lost keys, staff turnover, or a new key plan when the cylinder and lock remain serviceable. Replacement may change the cylinder, lock body, trim, strike, or a complete compatible assembly. The exact scope depends on the opening.

• Question: Main change — Rekeying: Key combination — Replacement: Hardware, compatibility, or function
• Question: Best starting point — Rekeying: Sound hardware, changed key control — Replacement: Damage, wear, mismatch, or changed use
• Question: Door preparation — Rekeying: Usually limited, but model-dependent — Replacement: May require model-specific preparation
• Question: Access plan — Rekeying: Keeps a compatible key system — Replacement: May change keys, credentials, or hardware family
• Question: Decision evidence — Rekeying: Cylinder and lock condition — Replacement: Condition, fit, function, and product requirements

When rekeying may be the better scope

Rekeying may fit a business that has a compatible, serviceable lock but needs to remove former key access or consolidate a key plan. Confirm that the cylinder, lock body, strike, frame, and door still operate correctly. A rekey does not repair a failing closer, misaligned door, damaged latch, or worn lock body.

When replacement deserves consideration

Replacement may be appropriate when a lock is damaged, repeatedly fails, cannot support the required key hierarchy, or does not match the door's traffic and security needs. Product selection still has to account for handing, thickness, frame, existing hardware, fire/egress context, and accessibility. Do not treat a catalog photo as a compatibility check. For code or AHJ questions, the locally adopted requirements control; the ICC's code-adoption guidance and the ADA Accessibility Standards are reference points, not a remote compliance determination.

Build a decision record

• Identify every affected opening and current users.
• Record lost keys, turnover, damage, binding, or recurring failures.
• Photograph the door and hardware without sharing sensitive access details publicly.
• Define whether the goal is key control, a new function, durability, or compatibility.
• Request a written scope that separates labor, hardware, and any approved extras.
• Test normal entry, exit, latching, and key administration at handoff.

What to document before requesting a quote

Prepare the door count, opening types, current lock or cylinder details, recent failures, and who is authorized to approve the work. Note whether the opening is an exit route, fire-rated assembly, storefront, or access-controlled door so the inspection includes related hardware and egress requirements. Ask for a written scope that separates labor, hardware, and any approved extras. For related commercial hardware planning, see commercial lock replacement service and the commercial door and access hardware guide.

When to request a second review

Request another qualified opinion when the proposed scope changes multiple openings, affects an exit or fire-rated assembly, introduces a new key hierarchy, or does not explain compatibility with the existing door. A second review should compare the written scope and opening evidence, not simply substitute one product recommendation for another.

Frequently Asked Questions