You Just Realized You Need New Locks
Maybe you lost a set of keys, and that nagging feeling of insecurity won’t go away. Perhaps you just moved into a new home and have no idea who might still have a copy of the front door key. Or maybe your old lock is simply worn out, sticking, and becoming a daily frustration.
Your first thought is practical: you need to change the locks. But right on its heels comes the next, very common question: how much is this going to cost me?
The answer isn’t a single number. The cost to change door locks swings widely based on what you choose to do, the hardware you select, and who does the work. A simple lock rekeying for a standard knob can be surprisingly affordable, while installing a high-tech smart lock system on a solid wood door can represent a significant investment.
This guide breaks down every cost factor for 2026, from DIY parts to professional labor rates, so you can budget accurately for the security and peace of mind you need.
Understanding Your Two Main Options: Rekeying vs. Replacement
Before we talk dollars, it’s crucial to understand the two fundamental services a locksmith provides. Choosing between them is the biggest factor in your final bill.
What Lock Rekeying Means for Your Wallet
Rekeying is the process of taking your existing lock cylinder apart and changing its internal pins so that it works with a brand new key. Your old keys will no longer function. The lock hardware itself—the doorknob, deadbolt, or handle—stays right where it is.
This is almost always the most cost-effective option. It’s perfect for situations where you like your current hardware, but you need to invalidate old keys (after a move, a roommate leaves, or keys are lost). A locksmith can often rekey all the locks in your home to work on a single, new key, which is called “keying alike.”
Because it requires less time and no new hardware, rekeying saves you money. The cost is primarily for the locksmith’s skill and service call.
When Full Lock Replacement Is the Right Choice
Replacement means removing the old lock entirely and installing a brand new one. This is necessary if the lock is damaged, malfunctioning, or if you want to upgrade to a different style or higher security level.
With replacement, you pay for both the new lock hardware and the labor to install it. This opens the door to a much wider range of prices, from a basic $20 deadbolt from a home center to a $300 smart lock. The labor to install them, however, is often similar.
Choose replacement for upgrades, repairs, or a fresh look. Choose rekeying for security on a budget when the hardware is still good.
Breaking Down the Cost Factors in 2026
Let’s put concrete numbers to these options. Prices can vary by region, locksmith company, and specific circumstances, but these ranges give you a solid expectation.
Professional Locksmith Service Call and Labor Rates
This is the base fee you’ll pay before any work is done. It covers the technician’s travel to your location and their initial diagnosis.
– Standard Service Call Fee: $50 to $100. This is typical for residential calls during normal business hours.
– Emergency/After-Hours Fee: $100 to $150 or more. Nights, weekends, and holidays always cost more.
– Hourly Labor Rate: If the job extends beyond a simple rekey or single lock install, locksmiths may charge an hourly rate, typically between $65 and $120 per hour.
Most rekeying and single-lock installation jobs are priced as flat-rate services that include this call fee.
Cost to Rekey Locks Professionally
This is usually a per-cylinder cost. Most standard door locks have one cylinder (the keyhole). A deadbolt has one, and a doorknob with a key on the outside has one.
– Per Lock Cylinder: $20 to $50.
– Entire Home Package: Many locksmiths offer a package deal. Rekeying 3 to 5 locks to use one key might cost $80 to $150 total.
For example, a typical front door with a deadbolt and a keyed knob has two cylinders. Rekeying both might run you $40 to $100, plus the service call fee.
Cost to Install or Replace Locks Professionally
Here, you pay for labor plus the lock you choose. Labor for installing a single standard deadbolt or lockset usually ranges from $40 to $80 per lock. The price assumes a standard door with a pre-drilled hole. If the door needs new holes or modification, labor costs will increase.
Therefore, the total cost formula is: (Cost of New Lock Hardware) + ($40 to $80 Labor per Lock) + Service Call Fee.
Price Ranges for Different Types of Door Locks
The lock you choose is the variable you control. Here’s what common residential locks cost for the hardware alone.
Basic Keyed Knob or Deadbolt
These are your standard, no-frills locks from brands like Schlage, Kwikset, or Defiant. You can find them at any hardware store.
– Hardware Cost: $20 to $60.
– Total Installed Cost (with labor): $60 to $140 per lock.
They offer fundamental security and are perfectly adequate for most interior doors or low-priority exterior doors.
High-Security and Commercial-Grade Locks
These locks feature heavier construction, hardened steel components to resist drilling, and often patented keyways that prevent unauthorized key duplication.
– Hardware Cost: $80 to $250+.
– Total Installed Cost: $120 to $330+ per lock.
Brands like Medeco, Mul-T-Lock, or high-end Schlage Primus models fall here. They are for homeowners with significant security concerns or valuable possessions.
Smart Locks and Keyless Entry Systems
This fast-growing category lets you use a code, smartphone, fingerprint, or key fob instead of a traditional key.
– Hardware Cost: $100 to $400+ for popular models from Yale, August, Schlage Encode, or Kwikset Halo.
– Total Installed Cost: $140 to $480+ per lock.
Installation can be straightforward if it fits your existing door prep, but some smart locks require specific door conditions or wiring for features like an integrated doorbell. Always check compatibility first.
The DIY Route: How Much You Can Save
If you’re moderately handy, changing a standard lockset is a common DIY project. The savings on labor can be substantial.
Your costs are limited to:
– The new lock hardware ($20 to $400).
– A basic screwdriver and possibly a tape measure.
– Your time (typically 15-30 minutes per standard lock after the first one).
For rekeying, DIY rekeying kits are available for specific brands (like Kwikset’s “SmartKey” or Schlage’s kits) for about $10 to $20. They include new keys and the tools to reset the lock pins. Success requires careful following of instructions and compatibility with your lock.
The risk with DIY is a botched installation that compromises security or damages the door. If you have any doubt, especially with expensive smart locks or non-standard doors, professional installation is a wise investment.
When a Handyman Might Be a Middle Ground
For simple lock replacement (not rekeying), a general handyman can often do the job for less than a specialized locksmith. Expect handyman rates of $40 to $80 per hour, and a standard lock install might take them half an hour to an hour. This can be a good option if you’re already having other work done.
However, for rekeying, security assessments, or dealing with malfunctioning or high-security locks, a licensed, bonded, and insured locksmith is the recommended professional.
Hidden Costs and Important Considerations
Your final quote can be affected by a few often-overlooked factors. Asking about these upfront prevents surprises.
– Multiple Lock Types: Rekeying a car lock, a mailbox lock, or a high-security safe lock is more expensive and requires different skills and parts than a house door.
– Non-Standard Doors: Solid metal doors, doors with glass sidelights (requiring a double-cylinder deadbolt), or antique doors with unusual hole sizes can increase labor time.
– Making Keys: Need multiple copies of your new key? Basic key copying is usually $2 to $5 per copy, but keys for high-security locks can cost $10 to $50 each to duplicate.
– Disposal Fees: Rare, but some companies may charge a small fee to take away your old hardware.
Getting an Accurate Quote and Avoiding Scams
Always get a clear, upfront quote before authorizing any work. A reputable locksmith will be able to give you a firm price over the phone for a standard job once you describe it.
Be wary of:
– Extremely lowball quotes that seem too good to be true.
– Technicians who arrive and then claim the job is “more complicated” and demand much more money.
– Companies that use generic names in online ads but answer the phone with a different name.
To protect yourself, use a locally established company with verifiable reviews, ensure they are licensed and bonded, and get the total price in writing before work begins.
Your Action Plan for Changing Door Locks
Now that you know the landscape, here’s how to proceed efficiently.
First, assess your need. Is it purely about key control (rekey), or do you want an upgrade (replace)? Check the condition of your current hardware.
Second, decide on your involvement. Are you comfortable with a DIY install for a standard lock, or is this a job for a pro?
Third, get quotes. If going professional, call 2-3 reputable local locksmiths. Describe exactly what you have and what you want. Ask for the total “out-the-door” price, including all fees, parts, and labor.
Finally, make your decision based on value, not just the lowest price. Good security is an investment in your peace of mind. Whether you spend $150 to rekey your entire home or $500 to install a state-of-the-art smart lock system, you’re buying control over who can enter your personal space. That clarity and security, once you have it, is worth every penny.
