Should You Rekey or Replace Your Locks? A Colorado Springs Locksmith Explains

"Should I rekey my locks or just replace them?" is one of the most common questions I get on the phone. Both options achieve the same headline goal — old keys stop working — but the right choice depends on the condition of your hardware, your security goals, and how much you want to spend. After more than 10 years working as a locksmith in Colorado Springs, here is the honest, practical breakdown I share with homeowners every week.

Quick Answer

If your existing locks are in good condition and you simply want a different key to operate them, rekey. If your locks are damaged, outdated, builder-grade, mismatched, or you want a real security upgrade, replace. Rekeying is faster and significantly cheaper. Replacement gives you new hardware, new finishes, and the option to step up to higher-grade security or smart locks.

What Rekeying Actually Does

A standard residential lock is a pin tumbler. Inside the cylinder there is a stack of small spring-loaded pins of different lengths. The right key pushes those pins to a precise height called the shear line, which lets the cylinder rotate and the bolt move. The wrong key holds the pins at the wrong height and the cylinder will not turn.

When we rekey a lock, we remove the cylinder, take out the existing bottom pins, and install a different combination of pins that matches a new key. The lock body, deadbolt, latch, strike plate, screws, and finish all stay exactly the same. After a rekey, the new key works and every old copy of the previous key is useless.

Rekeying is purely a key control change. It does not make a lock stronger, weaker, smarter, or prettier. It just changes which key opens it.

What "Replacing the Locks" Actually Means

A lock change is a hardware swap. We remove the existing lockset or deadbolt completely and install brand-new hardware in its place. That can mean:

• A new deadbolt from the same brand and style
• A full handleset and deadbolt combination on the front door
• An upgrade to a higher-grade or higher-security cylinder
• A switch to a smart lock or keypad deadbolt
• A whole-home hardware refresh with matching finishes across multiple doors

Because you are buying new hardware and we are doing more on-site work, replacement always costs more than rekeying. The trade-off is that you end up with hardware that fits your current security goals and looks the way you want it to.

When Rekeying Is the Right Call

Rekeying is the smart move when the existing hardware is working well and you only need to reset who has a working key. The most common scenarios I see in Colorado Springs:

• You just bought a home and the locks are in good condition. The previous owner, their realtor, contractors, cleaners, neighbors, and anyone else who had a key over the years no longer needs access. A rekey solves this in one visit at the lowest possible cost.
• You lost a key and you do not know where it ended up. Replacing the deadbolt is overkill. A rekey makes the lost key worthless and gives you a fresh set of working keys.
• A roommate, ex-partner, tenant, or caregiver moved out. Anyone who returned a key on paper may have made a copy. Rekeying takes that risk off the table without buying new hardware.
• You want one key to work on multiple doors. If your exterior locks share a compatible keyway, we can usually key them alike during the rekey. One key for the front, side, and garage entry door is a common request.
• The locks are good quality and you like them. Schlage, Kwikset SmartKey, Yale, Baldwin, and similar residential hardware in good condition are perfectly worth keeping. A rekey is the right answer.

When Replacing the Locks Is the Right Call

There are real situations where rekeying does not solve the problem. In those cases, full replacement is the better long-term decision:

• The lock is mechanically tired. If the deadbolt feels stiff, the key is hard to turn, the cylinder is sloppy, or the latch does not catch cleanly, the lock is wearing out. Rekeying a worn lock just gives you a new key for the same failing hardware.
• The hardware is builder-grade or low quality. Many homes in Colorado Springs ship with the cheapest locks the builder could install. Replacing a thin, hollow deadbolt with a real Grade 1 or Grade 2 deadbolt is a meaningful security upgrade — a rekey will not give you that.
• You want a different style or finish. If the front door has dated brass and you want matte black, oil-rubbed bronze, or satin nickel across the home, replacement is the only way to get there.
• You want a smart lock or keypad. A rekey cannot turn a mechanical deadbolt into a smart lock. Switching to keypad or app-controlled hardware always means a hardware change.
• The lock has visible damage from a forced entry attempt or break-in. Even if it still operates, the integrity of the cylinder, the strike, and sometimes the door jamb itself can be compromised. Replacement is the responsible call.
• Mismatched locks across the home. If the previous owner replaced random locks one at a time, you may have three or four different brands and finishes on your exterior doors. Replacing them with a single brand lets us key everything alike and gives you a consistent look.

The Brand and Keyway Catch Most People Miss

Here is a detail customers rarely hear before they call: lock brands are not interchangeable. Different manufacturers use different keyways. A Kwikset key physically will not fit into a Schlage cylinder, and the reverse is also true.

That matters in two situations:

1. Keying alike across the house. If you want one key to work on your front door, side door, and garage entry, those locks generally need to share a compatible keyway. In practice, that means matching the brand. Mixed-brand homes usually need either a few replacements or a strategic rekey plan.
2. Adding a new lock to an existing key. If you bought a new deadbolt at the hardware store and you want it keyed the same as your existing locks, the new lock has to use the same keyway. This is one of the most common reasons we recommend buying matching hardware up front instead of mixing brands.

This is not a sales pitch — it is just how lock cylinders are built. A good locksmith will tell you up front whether your goal is achievable with rekeying alone or whether one or two strategic replacements are needed to make it work.

ANSI/BHMA Grades — A Quick Primer

If you are leaning toward replacement and you want to upgrade your security at the same time, ANSI/BHMA grades are a useful shorthand. The grading system rates locks on durability and resistance to forced entry through standardized testing. There are three grades:

• Grade 1: Highest performance. Built for commercial and high-traffic doors. Strongest forced-entry resistance and longest cycle life. A great choice for a residential front door if you want the best.
• Grade 2: Mid-range and the typical recommendation for residential exterior doors. Strong balance of security, durability, and cost.
• Grade 3: Basic durability. Appropriate for interior doors only. Not what you want on an exterior door.

For most Colorado Springs homes, a quality Grade 2 deadbolt on the front door is more than enough. Stepping up to Grade 1 is worth it if you want the highest residential security or you live in a higher-risk situation.

What Each Option Costs in Colorado Springs

Here is the realistic 2026 picture from my own service area. These are typical ranges, not guaranteed prices for every job:

• Lock rekey: $95 to $150 per lock, with discounts for multiple locks at the same visit.
• Lock change: $90 to $180 per door.
• Deadbolt upgrade to a higher-grade lock: $75 to $130 plus the price of the lock.
• Smart lock installation: $200 to $400 for installation; the lock itself usually runs $300 to $750+ depending on brand and features.

For a typical Colorado Springs home with three exterior locks, a rekey for the whole house is often $285 to $450 total, while a full hardware replacement for the same three doors can easily run $300 to $600. For a deeper breakdown, see my full 2026 Colorado Springs locksmith pricing guide.

A Simple Decision Framework

If you only have a minute, ask yourself these three questions:

1. Are the existing locks in good condition? If yes, rekeying is on the table. If they are stiff, sloppy, damaged, or builder-grade, lean toward replacement.
2. Do I want any upgrade — better security, smart features, new finish, or matching hardware across the house? If yes, replacement is the only path that delivers that. Rekeying cannot.
3. Am I trying to minimize cost? If your only goal is to make sure old keys stop working, rekeying is the most affordable and the fastest option.

If after answering those three you are still not sure, call us and describe what you have. I would rather spend five minutes on the phone helping you make the right call than sell you hardware you do not need.

Service Area

I provide residential rekey and lock change service across Colorado Springs and the surrounding El Paso County communities, including Briargate, Broadmoor, Manitou Springs, Monument, Falcon, Peyton, Black Forest, Fountain, Security-Widefield, Fort Carson, Ellicott, Calhan, and Woodland Park.

Frequently Asked Questions

Is it cheaper to rekey or replace locks?

Rekeying is almost always cheaper than replacing locks. A typical residential rekey runs about $95 to $150 per lock in Colorado Springs in 2026, while a full lock replacement usually runs $75 to $200 or more per door. If your existing locks are in good shape, rekeying gives you the same key control benefit at a fraction of the cost.

Does rekeying a lock make it less secure?

No. A properly rekeyed lock is just as secure as it was before, because the lock body, deadbolt, and strike are unchanged. Rekeying only swaps the internal pins so a different key operates the cylinder. The mechanical strength of the lock and door is identical to what it was before the rekey.

Can any lock be rekeyed?

Most standard pin tumbler residential locks can be rekeyed. Locks that are damaged, severely worn, badly corroded, or missing pinning components may not be good candidates and are usually better replaced. Some specialty and high-security cylinders also require manufacturer-specific parts and trained technicians.

Can I rekey locks from different brands to one key?

Generally no. Different lock manufacturers use different keyways, so a Kwikset key will not fit into a Schlage cylinder and vice versa. To key multiple locks alike to one key, the locks usually need to share a compatible keyway, which most often means the same brand. If you want one key for the whole house, the simplest path is to make sure all of your exterior locks use the same brand.

Should I replace my locks after moving into a home in Colorado Springs?

You should always reset key control after a move because you do not know who has copies of the old key. Whether to rekey or replace depends on the existing hardware. If the locks are in good condition and you like them, rekeying is the smarter and more affordable choice. If the hardware is worn, builder-grade, mismatched, or you want to upgrade to higher security or smart locks, full replacement is worth the extra cost.

What ANSI/BHMA grade should a residential deadbolt be?

ANSI/BHMA grades rate locks for durability and forced-entry resistance. Grade 1 is the highest performance and is built for commercial and high-traffic doors. Grade 2 is the typical recommendation for residential exterior doors and offers a strong balance of security and value. Grade 3 is intended for interior doors. For most Colorado Springs front doors, a Grade 2 deadbolt is appropriate, and a Grade 1 is a strong upgrade if you want the highest residential security.