Types of Lock Services
Lock Change & Rekey: What Each Service Covers
A practical overview of the most common lock change services, what they include, and when each one makes sense.
A practical overview of the most common lock change services, what they include, and when each one makes sense.
Most locksmith work falls into one of five categories. Understanding what each covers helps you choose the right service and avoid paying for more than you need.
Replacing the locks on entry doors, interior rooms, or a garage after a move, lost key, or security concern. A full replacement swaps out the entire hardware; rekeying changes only the internal pins so old keys no longer work. For most situations, rekeying costs less and achieves the same result.
Typical cost: Rekeying $25–$55 per lock; full replacement $120–$220 per lock.
Office, retail, and multi-tenant buildings use heavier-duty hardware with master key systems or electronic access control. Lock changes are common when employees leave, security is compromised, or a lease changes hands. Commercial cylinders are rekeyed or replaced by a licensed locksmith, and a master key hierarchy is reset if needed.
Typical cost: Varies by hardware grade; commercial cylinders start around $80–$150 per unit.
An automotive locksmith can open a locked vehicle without damage and, if needed, cut and program a replacement key or fob. Modern transponder keys require programming equipment matched to the vehicle; a licensed automotive locksmith typically costs significantly less than a dealership for this service.
Typical cost: Lockout $75–$130; key programming $150–$350 depending on make and model.
Rekeying is the process of reconfiguring the lock's internal pins so a new key operates it while old keys are rendered useless. No hardware replacement is needed. It is the standard recommendation after buying a home, ending a tenant lease, or losing a key. The work takes 10–20 minutes per cylinder.
Typical cost: $25–$55 per cylinder; $85–$175 for a full home visit covering 3–5 locks.
Installing a new deadbolt or smart lock typically involves boring or enlarging a hole in the door, setting the strike plate in the frame, and testing alignment. Smart locks add wireless pairing and app configuration. Grade 1 deadbolts (the strongest ANSI rating) are recommended for exterior doors.
Typical cost: Deadbolt installation $100–$180; smart lock installation $150–$280 (hardware not included).
The choice between rekeying and full lock replacement comes down to the condition of the hardware and the reason for the change:
If the lock mechanism is functioning properly and you simply need old keys invalidated, rekeying is almost always the better value. A locksmith can assess the hardware and confirm which option is appropriate during the visit.
Browse common lock change questions or read the full guide on the home page.